Queries improved.

src/Squidex.Domain.Apps.Core.Operations/ConvertContent/ContentConverter.cs

@@ -5,23 +5,17 @@
 //  All rights reserved. Licensed under the MIT license.
 // ==========================================================================
 
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using Newtonsoft.Json.Linq;
-using Squidex.Domain.Apps.Core.Apps;
 using Squidex.Domain.Apps.Core.Contents;
 using Squidex.Domain.Apps.Core.Schemas;
-using Squidex.Domain.Apps.Core.ValidateContent;
 using Squidex.Infrastructure;
-using Squidex.Infrastructure.Json;
 
 namespace Squidex.Domain.Apps.Core.ConvertContent
 {
+    public delegate ContentFieldData FieldConverter(ContentFieldData data, Field field);
+
     public static class ContentConverter
     {
-        public static NamedContentData ToNameModel(this IdContentData source, Schema schema, bool decodeJsonField)
+        public static NamedContentData ToNameModel(this IdContentData source, Schema schema, params FieldConverter[] converters)
         {
             Guard.NotNull(schema, nameof(schema));
 
@@ -34,36 +28,18 @@ namespace Squidex.Domain.Apps.Core.ConvertContent
                     continue;
                 }
 
-                if (decodeJsonField && field is JsonField)
+                var fieldData = Convert(fieldValue.Value, field, converters);
-                {
-                    var encodedValue = new ContentFieldData();
 
-                    foreach (var partitionValue in fieldValue.Value)
+                if (fieldData != null)
-                    {
-                        if (partitionValue.Value.IsNull())
                 {
-                            encodedValue[partitionValue.Key] = null;
+                    result[field.Name] = fieldData;
-                        }
-                        else
-                        {
-                            var value = Encoding.UTF8.GetString(Convert.FromBase64String(partitionValue.Value.ToString()));
-
-                            encodedValue[partitionValue.Key] = JToken.Parse(value);
-                        }
-                    }
-
-                    result[field.Name] = encodedValue;
-                }
-                else
-                {
-                    result[field.Name] = fieldValue.Value;
                 }
             }
 
             return result;
         }
 
-        public static IdContentData ToIdModel(this NamedContentData content, Schema schema, bool encodeJsonField)
+        public static IdContentData ToIdModel(this NamedContentData content, Schema schema, params FieldConverter[] converters)
         {
             Guard.NotNull(schema, nameof(schema));
 
@@ -76,153 +52,81 @@ namespace Squidex.Domain.Apps.Core.ConvertContent
                     continue;
                 }
 
-                var fieldId = field.Id;
+                var fieldData = Convert(fieldValue.Value, field, converters);
-
-                if (encodeJsonField && field is JsonField)
-                {
-                    var encodedValue = new ContentFieldData();
-
-                    foreach (var partitionValue in fieldValue.Value)
-                    {
-                        if (partitionValue.Value.IsNull())
-                        {
-                            encodedValue[partitionValue.Key] = null;
-                        }
-                        else
-                        {
-                            var value = Convert.ToBase64String(Encoding.UTF8.GetBytes(partitionValue.Value.ToString()));
-
-                            encodedValue[partitionValue.Key] = value;
-                        }
-                    }
 
-                    result[fieldId] = encodedValue;
+                if (fieldData != null)
-                }
-                else
                 {
-                    result[fieldId] = fieldValue.Value;
+                    result[field.Id] = fieldData;
                 }
             }
 
             return result;
         }
 
-        public static NamedContentData ToApiModel(this NamedContentData content, Schema schema, LanguagesConfig languagesConfig, bool excludeHidden = true, bool checkTypeCompatibility = false)
+        public static IdContentData Convert(this IdContentData content, Schema schema, params FieldConverter[] converters)
         {
             Guard.NotNull(schema, nameof(schema));
-            Guard.NotNull(languagesConfig, nameof(languagesConfig));
 
-            var codeForInvariant = InvariantPartitioning.Instance.Master.Key;
+            var result = new IdContentData();
-            var codeForMasterLanguage = languagesConfig.Master.Language.Iso2Code;
-
-            var result = new NamedContentData();
 
             foreach (var fieldValue in content)
             {
-                if (!schema.FieldsByName.TryGetValue(fieldValue.Key, out var field) || (excludeHidden && field.IsHidden))
+                if (!schema.FieldsById.TryGetValue(fieldValue.Key, out var field))
                 {
                     continue;
                 }
 
-                if (checkTypeCompatibility)
+                var fieldData = Convert(fieldValue.Value, field, converters);
-                {
-                    var isValid = true;
 
-                    foreach (var value in fieldValue.Value.Values)
+                if (fieldData != null)
-                    {
-                        try
-                        {
-                            if (!value.IsNull())
-                            {
-                                JsonValueConverter.ConvertValue(field, value);
-                            }
-                        }
-                        catch
                 {
-                            isValid = false;
+                    result[field.Id] = fieldData;
-                            break;
                 }
             }
 
-                    if (!isValid)
+            return result;
-                    {
-                        continue;
-                    }
         }
 
-                var fieldResult = new ContentFieldData();
+        public static NamedContentData Convert(this NamedContentData content, Schema schema, params FieldConverter[] converters)
-                var fieldValues = fieldValue.Value;
-
-                if (field.Partitioning.Equals(Partitioning.Language))
-                {
-                    foreach (var languageConfig in languagesConfig)
         {
-                        var languageCode = languageConfig.Key;
+            Guard.NotNull(schema, nameof(schema));
 
-                        if (fieldValues.TryGetValue(languageCode, out var value))
+            var result = new NamedContentData();
-                        {
+
-                            fieldResult.Add(languageCode, value);
+            foreach (var fieldValue in content)
-                        }
-                        else if (languageConfig == languagesConfig.Master && fieldValues.TryGetValue(codeForInvariant, out value))
-                        {
-                            fieldResult.Add(languageCode, value);
-                        }
-                    }
-                }
-                else
-                {
-                    if (fieldValues.TryGetValue(codeForInvariant, out var value))
             {
-                        fieldResult.Add(codeForInvariant, value);
+                if (!schema.FieldsByName.TryGetValue(fieldValue.Key, out var field))
-                    }
-                    else if (fieldValues.TryGetValue(codeForMasterLanguage, out value))
                 {
-                        fieldResult.Add(codeForInvariant, value);
+                    continue;
                 }
-                    else if (fieldValues.Count > 0)
+
+                var fieldData = Convert(fieldValue.Value, field, converters);
+
+                if (fieldData != null)
                 {
-                        fieldResult.Add(codeForInvariant, fieldValues.Values.First());
+                    result[field.Name] = fieldData;
                 }
             }
 
-                result.Add(field.Name, fieldResult);
-            }
-
             return result;
         }
 
-        public static object ToLanguageModel(this NamedContentData content, LanguagesConfig languagesConfig, IReadOnlyCollection<Language> languagePreferences = null)
+        private static ContentFieldData Convert(ContentFieldData fieldData, Field field, FieldConverter[] converters)
         {
-            Guard.NotNull(languagesConfig, nameof(languagesConfig));
+            if (converters != null)
-
-            if (languagePreferences == null || languagePreferences.Count == 0)
             {
-                return content;
+                foreach (var converter in converters)
-            }
-
-            if (languagePreferences.Count == 1 && languagesConfig.TryGetConfig(languagePreferences.First(), out var languageConfig))
                 {
-                languagePreferences = languagePreferences.Union(languageConfig.LanguageFallbacks).ToList();
+                    fieldData = converter(fieldData, field);
-            }
-
-            var result = new Dictionary<string, JToken>();
-
-            foreach (var fieldValue in content)
-            {
-                var fieldValues = fieldValue.Value;
 
-                foreach (var language in languagePreferences)
+                    if (fieldData == null)
-                {
-                    if (fieldValues.TryGetValue(language, out var value) && value != null)
                     {
-                        result[fieldValue.Key] = value;
-
                         break;
                     }
                 }
             }
 
-            return result;
+            return fieldData;
         }
     }
 }

src/Squidex.Domain.Apps.Core.Operations/ConvertContent/ContentConverterFlat.cs

@@ -0,0 +1,74 @@
+// ==========================================================================
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex UG (haftungsbeschränkt)
+//  All rights reserved. Licensed under the MIT license.
+// ==========================================================================
+
+using System.Collections.Generic;
+using System.Linq;
+using Newtonsoft.Json.Linq;
+using Squidex.Domain.Apps.Core.Apps;
+using Squidex.Domain.Apps.Core.Contents;
+using Squidex.Infrastructure;
+
+namespace Squidex.Domain.Apps.Core.ConvertContent
+{
+    public static class ContentConverterFlat
+    {
+        public static object ToFlatLanguageModel(this NamedContentData content, LanguagesConfig languagesConfig, IReadOnlyCollection<Language> languagePreferences = null)
+        {
+            Guard.NotNull(languagesConfig, nameof(languagesConfig));
+
+            if (languagePreferences == null || languagePreferences.Count == 0)
+            {
+                return content;
+            }
+
+            if (languagePreferences.Count == 1 && languagesConfig.TryGetConfig(languagePreferences.First(), out var languageConfig))
+            {
+                languagePreferences = languagePreferences.Union(languageConfig.LanguageFallbacks).ToList();
+            }
+
+            var result = new Dictionary<string, JToken>();
+
+            foreach (var fieldValue in content)
+            {
+                var fieldData = fieldValue.Value;
+
+                foreach (var language in languagePreferences)
+                {
+                    if (fieldData.TryGetValue(language, out var value) && value != null)
+                    {
+                        result[fieldValue.Key] = value;
+
+                        break;
+                    }
+                }
+            }
+
+            return result;
+        }
+
+        public static Dictionary<string, object> ToFlatten(this NamedContentData content)
+        {
+            var result = new Dictionary<string, object>();
+
+            foreach (var fieldValue in content)
+            {
+                var fieldData = fieldValue.Value;
+
+                if (fieldData.Count == 1)
+                {
+                    result[fieldValue.Key] = fieldData.Values.First();
+                }
+                else
+                {
+                    result[fieldValue.Key] = fieldData;
+                }
+            }
+
+            return result;
+        }
+    }
+}

src/Squidex.Domain.Apps.Core.Operations/ConvertContent/FieldConverters.cs

@@ -0,0 +1,265 @@
+// ==========================================================================
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex UG (haftungsbeschraenkt)
+//  All rights reserved. Licensed under the MIT license.
+// ==========================================================================
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using Newtonsoft.Json.Linq;
+using Squidex.Domain.Apps.Core.Apps;
+using Squidex.Domain.Apps.Core.Contents;
+using Squidex.Domain.Apps.Core.Schemas;
+using Squidex.Domain.Apps.Core.ValidateContent;
+using Squidex.Infrastructure;
+using Squidex.Infrastructure.Json;
+
+#pragma warning disable RECS0002 // Convert anonymous method to method group
+
+namespace Squidex.Domain.Apps.Core.ConvertContent
+{
+    public static class FieldConverters
+    {
+        public static FieldConverter ExcludeHidden()
+        {
+            return (data, field) =>
+            {
+                return field.IsHidden ? null : data;
+            };
+        }
+
+        public static FieldConverter ExcludeChangedTypes()
+        {
+            return (data, field) =>
+            {
+                var isValid = true;
+
+                foreach (var value in data.Values)
+                {
+                    try
+                    {
+                        if (!value.IsNull())
+                        {
+                            JsonValueConverter.ConvertValue(field, value);
+                        }
+                    }
+                    catch
+                    {
+                        isValid = false;
+                        break;
+                    }
+                }
+
+                if (!isValid)
+                {
+                    return null;
+                }
+
+                return data;
+            };
+        }
+
+        public static FieldConverter ResolveInvariant(LanguagesConfig languagesConfig)
+        {
+            var codeForInvariant = InvariantPartitioning.Instance.Master.Key;
+            var codeForMasterLanguage = languagesConfig.Master.Language.Iso2Code;
+
+            return (data, field) =>
+            {
+                if (field.Partitioning.Equals(Partitioning.Invariant))
+                {
+                    var result = new ContentFieldData();
+
+                    if (data.TryGetValue(codeForInvariant, out var value))
+                    {
+                        result[codeForInvariant] = value;
+                    }
+                    else if (data.TryGetValue(codeForMasterLanguage, out value))
+                    {
+                        result[codeForInvariant] = value;
+                    }
+                    else if (data.Count > 0)
+                    {
+                        result[codeForInvariant] = data.Values.First();
+                    }
+
+                    return result;
+                }
+
+                return data;
+            };
+        }
+
+        public static FieldConverter ResolveLanguages(LanguagesConfig languagesConfig)
+        {
+            var codeForInvariant = InvariantPartitioning.Instance.Master.Key;
+            var codeForMasterLanguage = languagesConfig.Master.Language.Iso2Code;
+
+            return (data, field) =>
+            {
+                if (field.Partitioning.Equals(Partitioning.Language))
+                {
+                    var result = new ContentFieldData();
+
+                    foreach (var languageConfig in languagesConfig)
+                    {
+                        var languageCode = languageConfig.Key;
+
+                        if (data.TryGetValue(languageCode, out var value))
+                        {
+                            result[languageCode] = value;
+                        }
+                        else if (languageConfig == languagesConfig.Master && data.TryGetValue(codeForInvariant, out value))
+                        {
+                            result[languageCode] = value;
+                        }
+                    }
+
+                    return result;
+                }
+
+                return data;
+            };
+        }
+
+        public static FieldConverter ResolveFallbackLanguages(LanguagesConfig languagesConfig)
+        {
+            var master = languagesConfig.Master;
+
+            return (data, field) =>
+            {
+                if (field.Partitioning.Equals(Partitioning.Language))
+                {
+                    foreach (var languageConfig in languagesConfig)
+                    {
+                        var languageCode = languageConfig.Key;
+
+                        if (!data.TryGetValue(languageCode, out var value))
+                        {
+                            var dataFound = false;
+
+                            foreach (var fallback in languageConfig.Fallback)
+                            {
+                                if (data.TryGetValue(fallback, out value))
+                                {
+                                    data[languageCode] = value;
+                                    dataFound = true;
+                                    break;
+                                }
+                            }
+
+                            if (!dataFound && languageConfig != master)
+                            {
+                                if (data.TryGetValue(master.Language, out value))
+                                {
+                                    data[languageCode] = value;
+                                }
+                            }
+                        }
+                    }
+                }
+
+                return data;
+            };
+        }
+
+        public static FieldConverter FilterLanguages(LanguagesConfig languagesConfig, IEnumerable<Language> languages)
+        {
+            if (languages == null)
+            {
+                return (data, field) => data;
+            }
+
+            var languageCodes =
+                new HashSet<string>(
+                        languages.Select(x => x.Iso2Code).Where(x => languagesConfig.Contains(x)),
+                    StringComparer.OrdinalIgnoreCase);
+
+            if (languageCodes.Count == 0)
+            {
+                return (data, field) => data;
+            }
+
+            return (data, field) =>
+            {
+                if (field.Partitioning.Equals(Partitioning.Language))
+                {
+                    var result = new ContentFieldData();
+
+                    foreach (var languageCode in languageCodes)
+                    {
+                        if (data.TryGetValue(languageCode, out var value))
+                        {
+                            result[languageCode] = value;
+                        }
+                    }
+
+                    return result;
+                }
+
+                return data;
+            };
+        }
+
+        public static FieldConverter DecodeJson()
+        {
+            return (data, field) =>
+            {
+                if (field is JsonField)
+                {
+                    var result = new ContentFieldData();
+
+                    foreach (var partitionValue in data)
+                    {
+                        if (partitionValue.Value.IsNull())
+                        {
+                            result[partitionValue.Key] = null;
+                        }
+                        else
+                        {
+                            var value = Encoding.UTF8.GetString(Convert.FromBase64String(partitionValue.Value.ToString()));
+
+                            result[partitionValue.Key] = JToken.Parse(value);
+                        }
+                    }
+
+                    return result;
+                }
+
+                return data;
+            };
+        }
+
+        public static FieldConverter EncodeJson()
+        {
+            return (data, field) =>
+            {
+                if (field is JsonField)
+                {
+                    var result = new ContentFieldData();
+
+                    foreach (var partitionValue in data)
+                    {
+                        if (partitionValue.Value.IsNull())
+                        {
+                            result[partitionValue.Key] = null;
+                        }
+                        else
+                        {
+                            var value = Convert.ToBase64String(Encoding.UTF8.GetBytes(partitionValue.Value.ToString()));
+
+                            result[partitionValue.Key] = value;
+                        }
+                    }
+
+                    return result;
+                }
+
+                return data;
+            };
+        }
+    }
+}

src/Squidex.Domain.Apps.Core.Operations/ExtractReferenceIds/ContentReferencesExtensions.cs

@@ -17,33 +17,6 @@ namespace Squidex.Domain.Apps.Core.ExtractReferenceIds
 {
     public static class ContentReferencesExtensions
     {
-        public static IdContentData ToCleanedReferences(this IdContentData source, Schema schema, ISet<Guid> deletedReferencedIds)
-        {
-            Guard.NotNull(schema, nameof(schema));
-            Guard.NotNull(deletedReferencedIds, nameof(deletedReferencedIds));
-
-            var result = new IdContentData(source);
-
-            foreach (var field in schema.Fields)
-            {
-                var fieldData = source.GetOrDefault(field.Id);
-
-                if (fieldData == null)
-                {
-                    continue;
-                }
-
-                foreach (var partitionValue in fieldData.Where(x => !x.Value.IsNull()).ToList())
-                {
-                    var newValue = field.CleanReferences(partitionValue.Value, deletedReferencedIds);
-
-                    fieldData[partitionValue.Key] = newValue;
-                }
-            }
-
-            return result;
-        }
-
         public static IEnumerable<Guid> GetReferencedIds(this IdContentData source, Schema schema)
         {
             Guard.NotNull(schema, nameof(schema));

src/Squidex.Domain.Apps.Core.Operations/ExtractReferenceIds/FieldReferencesConverter.cs

@@ -0,0 +1,35 @@
+// ==========================================================================
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex UG (haftungsbeschraenkt)
+//  All rights reserved. Licensed under the MIT license.
+// ==========================================================================
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Squidex.Domain.Apps.Core.ConvertContent;
+using Squidex.Infrastructure.Json;
+
+namespace Squidex.Domain.Apps.Core.ExtractReferenceIds
+{
+    public static class FieldReferencesConverter
+    {
+        public static FieldConverter CleanReferences(IEnumerable<Guid> deletedReferencedIds)
+        {
+            var ids = new HashSet<Guid>(deletedReferencedIds);
+
+            return (data, field) =>
+            {
+                foreach (var partitionValue in data.Where(x => !x.Value.IsNull()).ToList())
+                {
+                    var newValue = field.CleanReferences(partitionValue.Value, ids);
+
+                    data[partitionValue.Key] = newValue;
+                }
+
+                return data;
+            };
+        }
+    }
+}

src/Squidex.Domain.Apps.Core.Operations/ExtractReferenceIds/ReferencesCleaner.cs

@@ -17,6 +17,7 @@ namespace Squidex.Domain.Apps.Core.ExtractReferenceIds
     public static class ReferencesCleaner
     {
         private static readonly List<Guid> EmptyIds = new List<Guid>();
+
         public static JToken CleanReferences(this Field field, JToken value, ISet<Guid> oldReferences)
         {
             if ((field is AssetsField || field is ReferencesField) && !value.IsNull())

src/Squidex.Domain.Apps.Entities.MongoDb/Contents/Extensions.cs

@@ -26,9 +26,14 @@ namespace Squidex.Domain.Apps.Entities.MongoDb.Contents
             return data.GetReferencedIds(schema).ToList();
         }
 
-        public static NamedContentData ToData(this IdContentData idData, Schema schema, List<Guid> deletedIds)
+        public static NamedContentData FromMongoModel(this IdContentData result, Schema schema, List<Guid> deletedIds)
         {
-            return idData.ToCleanedReferences(schema, new HashSet<Guid>(deletedIds)).ToNameModel(schema, true);
+            return result.ToNameModel(schema, FieldConverters.DecodeJson(), FieldReferencesConverter.CleanReferences(deletedIds));
+        }
+
+        public static IdContentData ToMongoModel(this NamedContentData result, Schema schema)
+        {
+            return result.ToIdModel(schema, FieldConverters.EncodeJson());
         }
 
         public static string ToFullText<T>(this ContentData<T> data)

src/Squidex.Domain.Apps.Entities.MongoDb/Contents/MongoContentEntity.cs

@@ -126,11 +126,11 @@ namespace Squidex.Domain.Apps.Entities.MongoDb.Contents
 
         public void ParseData(Schema schema)
         {
-            data = DataByIds.ToData(schema, ReferencedIdsDeleted);
+            data = DataByIds.FromMongoModel(schema, ReferencedIdsDeleted);
 
             if (DataDraftByIds != null)
             {
-                dataDraft = DataDraftByIds.ToData(schema, ReferencedIdsDeleted);
+                dataDraft = DataDraftByIds.FromMongoModel(schema, ReferencedIdsDeleted);
             }
         }
     }

src/Squidex.Domain.Apps.Entities.MongoDb/Contents/MongoContentRepository_SnapshotStore.cs

@@ -8,7 +8,6 @@
 using System;
 using System.Threading.Tasks;
 using Squidex.Domain.Apps.Core.Contents;
-using Squidex.Domain.Apps.Core.ConvertContent;
 using Squidex.Domain.Apps.Entities.Contents.State;
 using Squidex.Domain.Apps.Entities.Schemas;
 using Squidex.Infrastructure;
@@ -39,12 +38,12 @@ namespace Squidex.Domain.Apps.Entities.MongoDb.Contents
 
                 var schema = await GetSchemaAsync(value.AppId.Id, value.SchemaId.Id);
 
-                var idData = value.Data.ToIdModel(schema.SchemaDef, true);
+                var idData = value.Data.ToMongoModel(schema.SchemaDef);
 
                 var content = SimpleMapper.Map(value, new MongoContentEntity
                 {
                     DataByIds = idData,
-                    DataDraftByIds = value.DataDraft?.ToIdModel(schema.SchemaDef, true),
+                    DataDraftByIds = value.DataDraft?.ToMongoModel(schema.SchemaDef),
                     IsDeleted = value.IsDeleted,
                     IndexedAppId = value.AppId.Id,
                     IndexedSchemaId = value.SchemaId.Id,

src/Squidex.Domain.Apps.Entities/Contents/ContentQueryService.cs

@@ -8,21 +8,18 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using System.Security.Claims;
 using System.Threading.Tasks;
 using Microsoft.OData;
 using Microsoft.OData.UriParser;
 using Squidex.Domain.Apps.Core.Contents;
 using Squidex.Domain.Apps.Core.ConvertContent;
 using Squidex.Domain.Apps.Core.Scripting;
-using Squidex.Domain.Apps.Entities.Apps;
 using Squidex.Domain.Apps.Entities.Contents.Edm;
 using Squidex.Domain.Apps.Entities.Contents.Repositories;
 using Squidex.Domain.Apps.Entities.Schemas;
 using Squidex.Infrastructure;
 using Squidex.Infrastructure.Log;
 using Squidex.Infrastructure.Reflection;
-using Squidex.Infrastructure.Security;
 
 namespace Squidex.Domain.Apps.Entities.Contents
 {
@@ -58,108 +55,90 @@ namespace Squidex.Domain.Apps.Entities.Contents
             this.modelBuilder = modelBuilder;
         }
 
-        public Task ThrowIfSchemaNotExistsAsync(IAppEntity app, string schemaIdOrName)
+        public Task ThrowIfSchemaNotExistsAsync(QueryContext context)
         {
-            return GetSchemaAsync(app, schemaIdOrName);
+            return GetSchemaAsync(context);
         }
 
-        public async Task<IContentEntity> FindContentAsync(IAppEntity app, string schemaIdOrName, ClaimsPrincipal user, Guid id, long version = -1)
+        public async Task<IContentEntity> FindContentAsync(QueryContext context, Guid id, long version = -1)
         {
-            Guard.NotNull(app, nameof(app));
+            Guard.NotNull(context, nameof(context));
-            Guard.NotNull(user, nameof(user));
             Guard.NotEmpty(id, nameof(id));
-            Guard.NotNullOrEmpty(schemaIdOrName, nameof(schemaIdOrName));
 
-            var schema = await GetSchemaAsync(app, schemaIdOrName);
+            var schema = await GetSchemaAsync(context);
 
             using (Profiler.TraceMethod<ContentQueryService>())
             {
                 var isVersioned = version > EtagVersion.Empty;
-                var isFrontend = IsFrontendClient(user);
 
-                var parsedStatus = isFrontend ? StatusAll : StatusPublished;
+                var parsedStatus = context.IsFrontendClient ? StatusAll : StatusPublished;
 
                 var content =
                     isVersioned ?
                     await FindContentByVersionAsync(id, version) :
-                    await FindContentAsync(app, id, parsedStatus, schema);
+                    await FindContentAsync(context, id, parsedStatus, schema);
 
-                if (content == null || (content.Status != Status.Published && !isFrontend) || content.SchemaId.Id != schema.Id)
+                if (content == null || (content.Status != Status.Published && !context.IsFrontendClient) || content.SchemaId.Id != schema.Id)
                 {
                     throw new DomainObjectNotFoundException(id.ToString(), typeof(ISchemaEntity));
                 }
 
-                return TransformContent(app, schema, user, content, isFrontend, isVersioned);
+                return TransformContent(context, schema, true, content);
             }
         }
 
-        public async Task<IResultList<IContentEntity>> QueryAsync(IAppEntity app, string schemaIdOrName, ClaimsPrincipal user, bool archived, string query)
+        public async Task<IResultList<IContentEntity>> QueryAsync(QueryContext context, string query)
         {
-            Guard.NotNull(app, nameof(app));
+            Guard.NotNull(context, nameof(context));
-            Guard.NotNull(user, nameof(user));
-            Guard.NotNullOrEmpty(schemaIdOrName, nameof(schemaIdOrName));
 
-            var schema = await GetSchemaAsync(app, schemaIdOrName);
+            var schema = await GetSchemaAsync(context);
 
             using (Profiler.TraceMethod<ContentQueryService>("QueryAsyncByQuery"))
             {
-                var isFrontend = IsFrontendClient(user);
+                var parsedQuery = ParseQuery(context, query, schema);
+                var parsedStatus = ParseStatus(context);
 
-                var parsedQuery = ParseQuery(app, query, schema);
+                var contents = await contentRepository.QueryAsync(context.App, schema, parsedStatus, parsedQuery);
-                var parsedStatus = ParseStatus(isFrontend, archived);
 
-                var contents = await contentRepository.QueryAsync(app, schema, parsedStatus, parsedQuery);
+                return TransformContents(context, schema, true, contents);
-
-                return TransformContents(app, schema, user, contents, false, isFrontend);
             }
         }
 
-        public async Task<IResultList<IContentEntity>> QueryAsync(IAppEntity app, string schemaIdOrName, ClaimsPrincipal user, bool archived, HashSet<Guid> ids)
+        public async Task<IResultList<IContentEntity>> QueryAsync(QueryContext context, HashSet<Guid> ids)
         {
+            Guard.NotNull(context, nameof(context));
             Guard.NotNull(ids, nameof(ids));
-            Guard.NotNull(app, nameof(app));
-            Guard.NotNull(user, nameof(user));
-            Guard.NotNullOrEmpty(schemaIdOrName, nameof(schemaIdOrName));
 
-            var schema = await GetSchemaAsync(app, schemaIdOrName);
+            var schema = await GetSchemaAsync(context);
 
             using (Profiler.TraceMethod<ContentQueryService>("QueryAsyncByIds"))
             {
-                var isFrontend = IsFrontendClient(user);
+                var parsedStatus = ParseStatus(context);
-
-                var parsedStatus = ParseStatus(isFrontend, archived);
 
-                var contents = await contentRepository.QueryAsync(app, schema, parsedStatus, ids);
+                var contents = await contentRepository.QueryAsync(context.App, schema, parsedStatus, ids);
 
-                return TransformContents(app, schema, user, contents, false, isFrontend);
+                return TransformContents(context, schema, false, contents);
             }
         }
 
-        private IContentEntity TransformContent(IAppEntity app, ISchemaEntity schema, ClaimsPrincipal user,
+        private IContentEntity TransformContent(QueryContext context, ISchemaEntity schema, bool checkType, IContentEntity content)
-            IContentEntity content,
-            bool isFrontend,
-            bool isVersioned)
         {
-            return TransformContents(app, schema, user, Enumerable.Repeat(content, 1), isVersioned, isFrontend).FirstOrDefault();
+            return TransformContents(context, schema, checkType, Enumerable.Repeat(content, 1)).FirstOrDefault();
         }
 
-        private IResultList<IContentEntity> TransformContents(IAppEntity app, ISchemaEntity schema, ClaimsPrincipal user,
+        private IResultList<IContentEntity> TransformContents(QueryContext context, ISchemaEntity schema, bool checkType, IResultList<IContentEntity> contents)
-            IResultList<IContentEntity> contents,
-            bool isTypeChecking,
-            bool isFrontendClient)
         {
-            var transformed = TransformContents(app, schema, user, (IEnumerable<IContentEntity>)contents, isTypeChecking, isFrontendClient);
+            var transformed = TransformContents(context, schema, checkType, (IEnumerable<IContentEntity>)contents);
 
             return ResultList.Create(transformed, contents.Total);
         }
 
-        private IEnumerable<IContentEntity> TransformContents(IAppEntity app, ISchemaEntity schema, ClaimsPrincipal user,
+        private IEnumerable<IContentEntity> TransformContents(QueryContext context, ISchemaEntity schema, bool checkType, IEnumerable<IContentEntity> contents)
-            IEnumerable<IContentEntity> contents,
-            bool isTypeChecking,
-            bool isFrontendClient)
         {
             using (Profiler.TraceMethod<ContentQueryService>())
             {
+                var converters = GenerateConverters(context, checkType).ToArray();
+
                 var scriptText = schema.ScriptQuery;
 
                 var isScripting = !string.IsNullOrWhiteSpace(scriptText);
@@ -170,17 +149,17 @@ namespace Squidex.Domain.Apps.Entities.Contents
 
                     if (result.Data != null)
                     {
-                        if (!isFrontendClient && isScripting)
+                        if (!context.IsFrontendClient && isScripting)
                         {
-                            result.Data = scriptEngine.Transform(new ScriptContext { User = user, Data = content.Data, ContentId = content.Id }, scriptText);
+                            result.Data = scriptEngine.Transform(new ScriptContext { User = context.User, Data = content.Data, ContentId = content.Id }, scriptText);
                         }
 
-                        result.Data = result.Data.ToApiModel(schema.SchemaDef, app.LanguagesConfig, isFrontendClient, isTypeChecking);
+                        result.Data = result.Data.Convert(schema.SchemaDef, converters);
                     }
 
                     if (result.DataDraft != null)
                     {
-                        result.DataDraft = result.DataDraft.ToApiModel(schema.SchemaDef, app.LanguagesConfig, isFrontendClient, isTypeChecking);
+                        result.DataDraft = result.DataDraft.Convert(schema.SchemaDef, converters);
                     }
 
                     yield return result;
@@ -188,13 +167,35 @@ namespace Squidex.Domain.Apps.Entities.Contents
             }
         }
 
-        private ODataUriParser ParseQuery(IAppEntity app, string query, ISchemaEntity schema)
+        private IEnumerable<FieldConverter> GenerateConverters(QueryContext context, bool checkType)
+        {
+            if (!context.IsFrontendClient)
+            {
+                yield return FieldConverters.ExcludeHidden();
+            }
+
+            if (checkType)
+            {
+                yield return FieldConverters.ExcludeChangedTypes();
+            }
+
+            yield return FieldConverters.ResolveInvariant(context.App.LanguagesConfig);
+            yield return FieldConverters.ResolveLanguages(context.App.LanguagesConfig);
+
+            if (!context.IsFrontendClient)
+            {
+                yield return FieldConverters.ResolveFallbackLanguages(context.App.LanguagesConfig);
+                yield return FieldConverters.FilterLanguages(context.App.LanguagesConfig, context.Languages);
+            }
+        }
+
+        private ODataUriParser ParseQuery(QueryContext context, string query, ISchemaEntity schema)
         {
             using (Profiler.TraceMethod<ContentQueryService>())
             {
                 try
                 {
-                    var model = modelBuilder.BuildEdmModel(schema, app);
+                    var model = modelBuilder.BuildEdmModel(schema, context.App);
 
                     return model.ParseQuery(query);
                 }
@@ -205,35 +206,33 @@ namespace Squidex.Domain.Apps.Entities.Contents
             }
         }
 
-        public async Task<ISchemaEntity> GetSchemaAsync(IAppEntity app, string schemaIdOrName)
+        public async Task<ISchemaEntity> GetSchemaAsync(QueryContext context)
         {
-            Guard.NotNull(app, nameof(app));
-
             ISchemaEntity schema = null;
 
-            if (Guid.TryParse(schemaIdOrName, out var id))
+            if (Guid.TryParse(context.SchemaIdOrName, out var id))
             {
-                schema = await appProvider.GetSchemaAsync(app.Id, id);
+                schema = await appProvider.GetSchemaAsync(context.App.Id, id);
             }
 
             if (schema == null)
             {
-                schema = await appProvider.GetSchemaAsync(app.Id, schemaIdOrName);
+                schema = await appProvider.GetSchemaAsync(context.App.Id, context.SchemaIdOrName);
             }
 
             if (schema == null)
             {
-                throw new DomainObjectNotFoundException(schemaIdOrName, typeof(ISchemaEntity));
+                throw new DomainObjectNotFoundException(context.SchemaIdOrName, typeof(ISchemaEntity));
             }
 
             return schema;
         }
 
-        private static Status[] ParseStatus(bool isFrontendClient, bool archived)
+        private static Status[] ParseStatus(QueryContext context)
         {
-            if (isFrontendClient)
+            if (context.IsFrontendClient)
             {
-                if (archived)
+                if (context.Archived)
                 {
                     return StatusArchived;
                 }
@@ -249,14 +248,9 @@ namespace Squidex.Domain.Apps.Entities.Contents
             return contentVersionLoader.LoadAsync(id, version);
         }
 
-        private Task<IContentEntity> FindContentAsync(IAppEntity app, Guid id, Status[] status, ISchemaEntity schema)
+        private Task<IContentEntity> FindContentAsync(QueryContext context, Guid id, Status[] status, ISchemaEntity schema)
-        {
-            return contentRepository.FindContentAsync(app, schema, status, id);
-        }
-
-        private static bool IsFrontendClient(ClaimsPrincipal user)
         {
-            return user.IsInClient("squidex-frontend");
+            return contentRepository.FindContentAsync(context.App, schema, status, id);
         }
     }
 }

src/Squidex.Domain.Apps.Entities/Contents/GraphQL/CachingGraphQLService.cs

@@ -7,7 +7,6 @@
 
 using System;
 using System.Linq;
-using System.Security.Claims;
 using System.Threading.Tasks;
 using Microsoft.Extensions.Caching.Memory;
 using Squidex.Domain.Apps.Entities.Apps;
@@ -47,9 +46,9 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
             this.urlGenerator = urlGenerator;
         }
 
-        public async Task<(object Data, object[] Errors)> QueryAsync(IAppEntity app, ClaimsPrincipal user, GraphQLQuery query)
+        public async Task<(object Data, object[] Errors)> QueryAsync(QueryContext context, GraphQLQuery query)
         {
-            Guard.NotNull(app, nameof(app));
+            Guard.NotNull(context, nameof(context));
             Guard.NotNull(query, nameof(query));
 
             if (string.IsNullOrWhiteSpace(query.Query))
@@ -57,9 +56,9 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
                 return (new object(), new object[0]);
             }
 
-            var modelContext = await GetModelAsync(app);
+            var modelContext = await GetModelAsync(context.App);
 
-            var ctx = new GraphQLExecutionContext(app, assetRepository, commandBus, contentQuery, user, urlGenerator);
+            var ctx = new GraphQLExecutionContext(context, assetRepository, commandBus, contentQuery, urlGenerator);
 
             return await modelContext.ExecuteAsync(ctx, query);
         }

src/Squidex.Domain.Apps.Entities/Contents/GraphQL/GraphQLExecutionContext.cs

@@ -7,25 +7,26 @@
 
 using System;
 using System.Collections.Generic;
-using System.Security.Claims;
 using System.Threading.Tasks;
 using Newtonsoft.Json.Linq;
-using Squidex.Domain.Apps.Entities.Apps;
 using Squidex.Domain.Apps.Entities.Assets;
 using Squidex.Domain.Apps.Entities.Assets.Repositories;
 using Squidex.Infrastructure.Commands;
 
 namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
 {
-    public sealed class GraphQLExecutionContext : QueryContext
+    public sealed class GraphQLExecutionContext : QueryExecutionContext
     {
         public ICommandBus CommandBus { get; }
 
         public IGraphQLUrlGenerator UrlGenerator { get; }
 
-        public GraphQLExecutionContext(IAppEntity app, IAssetRepository assetRepository, ICommandBus commandBus, IContentQueryService contentQuery, ClaimsPrincipal user,
+        public GraphQLExecutionContext(QueryContext context,
+            IAssetRepository assetRepository,
+            ICommandBus commandBus,
+            IContentQueryService contentQuery,
             IGraphQLUrlGenerator urlGenerator)
-            : base(app, assetRepository, contentQuery, user)
+            : base(context, assetRepository, contentQuery)
         {
             CommandBus = commandBus;
 

src/Squidex.Domain.Apps.Entities/Contents/GraphQL/IGraphQLService.cs

@@ -5,14 +5,12 @@
 //  All rights reserved. Licensed under the MIT license.
 // ==========================================================================
 
-using System.Security.Claims;
 using System.Threading.Tasks;
-using Squidex.Domain.Apps.Entities.Apps;
 
 namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
 {
     public interface IGraphQLService
     {
-        Task<(object Data, object[] Errors)> QueryAsync(IAppEntity app, ClaimsPrincipal user, GraphQLQuery query);
+        Task<(object Data, object[] Errors)> QueryAsync(QueryContext context, GraphQLQuery query);
     }
 }

src/Squidex.Domain.Apps.Entities/Contents/IContentQueryService.cs

@@ -7,21 +7,19 @@
 
 using System;
 using System.Collections.Generic;
-using System.Security.Claims;
 using System.Threading.Tasks;
-using Squidex.Domain.Apps.Entities.Apps;
 using Squidex.Infrastructure;
 
 namespace Squidex.Domain.Apps.Entities.Contents
 {
     public interface IContentQueryService
     {
-        Task<IResultList<IContentEntity>> QueryAsync(IAppEntity app, string schemaIdOrName, ClaimsPrincipal user, bool archived, HashSet<Guid> ids);
+        Task<IResultList<IContentEntity>> QueryAsync(QueryContext context, HashSet<Guid> ids);
 
-        Task<IResultList<IContentEntity>> QueryAsync(IAppEntity app, string schemaIdOrName, ClaimsPrincipal user, bool archived, string query);
+        Task<IResultList<IContentEntity>> QueryAsync(QueryContext context, string query);
 
-        Task<IContentEntity> FindContentAsync(IAppEntity app, string schemaIdOrName, ClaimsPrincipal user, Guid id, long version = EtagVersion.Any);
+        Task<IContentEntity> FindContentAsync(QueryContext context, Guid id, long version = EtagVersion.Any);
 
-        Task ThrowIfSchemaNotExistsAsync(IAppEntity app, string schemaIdOrName);
+        Task ThrowIfSchemaNotExistsAsync(QueryContext context);
     }
 }

src/Squidex.Domain.Apps.Entities/Contents/QueryContext.cs

@@ -1,145 +1,83 @@
 // ==========================================================================
 //  Squidex Headless CMS
 // ==========================================================================
-//  Copyright (c) Squidex UG (haftungsbeschränkt)
+//  Copyright (c) Squidex UG (haftungsbeschraenkt)
 //  All rights reserved. Licensed under the MIT license.
 // ==========================================================================
 
 using System;
-using System.Collections.Concurrent;
 using System.Collections.Generic;
-using System.Linq;
 using System.Security.Claims;
-using System.Threading.Tasks;
 using Squidex.Domain.Apps.Entities.Apps;
-using Squidex.Domain.Apps.Entities.Assets;
-using Squidex.Domain.Apps.Entities.Assets.Repositories;
 using Squidex.Infrastructure;
+using Squidex.Infrastructure.Reflection;
+using Squidex.Infrastructure.Security;
 
 namespace Squidex.Domain.Apps.Entities.Contents
 {
-    public class QueryContext
+    public sealed class QueryContext : Cloneable<QueryContext>
     {
-        private readonly ConcurrentDictionary<Guid, IContentEntity> cachedContents = new ConcurrentDictionary<Guid, IContentEntity>();
+        public ClaimsPrincipal User { get; private set; }
-        private readonly ConcurrentDictionary<Guid, IAssetEntity> cachedAssets = new ConcurrentDictionary<Guid, IAssetEntity>();
-        private readonly IContentQueryService contentQuery;
-        private readonly IAssetRepository assetRepository;
-        private readonly IAppEntity app;
-        private readonly ClaimsPrincipal user;
-
-        public QueryContext(
-            IAppEntity app,
-            IAssetRepository assetRepository,
-            IContentQueryService contentQuery,
-            ClaimsPrincipal user)
-        {
-            Guard.NotNull(assetRepository, nameof(assetRepository));
-            Guard.NotNull(contentQuery, nameof(contentQuery));
-            Guard.NotNull(app, nameof(app));
-            Guard.NotNull(user, nameof(user));
 
-            this.assetRepository = assetRepository;
+        public IAppEntity App { get; private set; }
-            this.contentQuery = contentQuery;
 
-            this.user = user;
+        public IEnumerable<Language> Languages { get; private set; }
 
-            this.app = app;
+        public string SchemaIdOrName { get; private set; }
-        }
 
-        public async Task<IAssetEntity> FindAssetAsync(Guid id)
+        public bool Archived { get; private set; }
-        {
-            var asset = cachedAssets.GetOrDefault(id);
 
-            if (asset == null)
+        public bool Flatten { get; private set; }
-            {
-                asset = await assetRepository.FindAssetAsync(id);
 
-                if (asset != null)
+        private QueryContext()
         {
-                    cachedAssets[asset.Id] = asset;
         }
-            }
-
-            return asset;
-        }
-
-        public async Task<IContentEntity> FindContentAsync(Guid schemaId, Guid id)
-        {
-            var content = cachedContents.GetOrDefault(id);
 
-            if (content == null)
+        public static QueryContext Create(IAppEntity app, ClaimsPrincipal user, IEnumerable<string> languageCodes = null)
         {
-                content = await contentQuery.FindContentAsync(app, schemaId.ToString(), user, id);
+            var result = new QueryContext { App = app, User = user };
 
-                if (content != null)
+            if (languageCodes != null)
             {
-                    cachedContents[content.Id] = content;
+                var languages = new List<Language>();
-                }
-            }
-
-            return content;
-        }
 
-        public async Task<IResultList<IAssetEntity>> QueryAssetsAsync(string query)
+                foreach (var iso2Code in languageCodes)
                 {
-            var assets = await assetRepository.QueryAsync(app.Id, query);
+                    if (Language.TryGetLanguage(iso2Code, out var language))
-
-            foreach (var asset in assets)
                     {
-                cachedAssets[asset.Id] = asset;
+                        languages.Add(language);
                     }
-
-            return assets;
                 }
 
-        public async Task<IResultList<IContentEntity>> QueryContentsAsync(string schemaIdOrName, string query)
+                result.Languages = languages;
-        {
-            var result = await contentQuery.QueryAsync(app, schemaIdOrName, user, false, query);
-
-            foreach (var content in result)
-            {
-                cachedContents[content.Id] = content;
             }
 
             return result;
         }
 
-        public async Task<IReadOnlyList<IAssetEntity>> GetReferencedAssetsAsync(ICollection<Guid> ids)
+        public QueryContext WithArchived(bool archived)
-        {
-            Guard.NotNull(ids, nameof(ids));
-
-            var notLoadedAssets = new HashSet<Guid>(ids.Where(id => !cachedAssets.ContainsKey(id)));
-
-            if (notLoadedAssets.Count > 0)
-            {
-                var assets = await assetRepository.QueryAsync(app.Id, notLoadedAssets);
-
-                foreach (var asset in assets)
         {
-                    cachedAssets[asset.Id] = asset;
+            return Clone(c => c.Archived = archived);
-                }
         }
 
-            return ids.Select(cachedAssets.GetOrDefault).Where(x => x != null).ToList();
+        public QueryContext WithFlatten(bool flatten)
-        }
-
-        public async Task<IReadOnlyList<IContentEntity>> GetReferencedContentsAsync(Guid schemaId, ICollection<Guid> ids)
         {
-            Guard.NotNull(ids, nameof(ids));
+            return Clone(c => c.Flatten = flatten);
-
+        }
-            var notLoadedContents = new HashSet<Guid>(ids.Where(id => !cachedContents.ContainsKey(id)));
 
-            if (notLoadedContents.Count > 0)
+        public QueryContext WithSchemaName(string name)
         {
-                var result = await contentQuery.QueryAsync(app, schemaId.ToString(), user, false, notLoadedContents);
+            return Clone(c => c.SchemaIdOrName = name);
+        }
 
-                foreach (var content in result)
+        public QueryContext WithSchemaId(Guid id)
         {
-                    cachedContents[content.Id] = content;
+            return Clone(c => c.SchemaIdOrName = id.ToString());
-                }
         }
 
-            return ids.Select(cachedContents.GetOrDefault).Where(x => x != null).ToList();
+        public bool IsFrontendClient
+        {
+            get { return User.IsInClient("squidex-frontend"); }
         }
     }
 }

src/Squidex.Domain.Apps.Entities/Contents/QueryExecutionContext.cs

@@ -0,0 +1,136 @@
+// ==========================================================================
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex UG (haftungsbeschränkt)
+//  All rights reserved. Licensed under the MIT license.
+// ==========================================================================
+
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Squidex.Domain.Apps.Entities.Assets;
+using Squidex.Domain.Apps.Entities.Assets.Repositories;
+using Squidex.Infrastructure;
+
+namespace Squidex.Domain.Apps.Entities.Contents
+{
+    public class QueryExecutionContext
+    {
+        private readonly ConcurrentDictionary<Guid, IContentEntity> cachedContents = new ConcurrentDictionary<Guid, IContentEntity>();
+        private readonly ConcurrentDictionary<Guid, IAssetEntity> cachedAssets = new ConcurrentDictionary<Guid, IAssetEntity>();
+        private readonly IContentQueryService contentQuery;
+        private readonly IAssetRepository assetRepository;
+        private readonly QueryContext context;
+
+        public QueryExecutionContext(QueryContext context,
+            IAssetRepository assetRepository,
+            IContentQueryService contentQuery)
+        {
+            Guard.NotNull(assetRepository, nameof(assetRepository));
+            Guard.NotNull(contentQuery, nameof(contentQuery));
+            Guard.NotNull(context, nameof(context));
+
+            this.assetRepository = assetRepository;
+            this.contentQuery = contentQuery;
+            this.context = context;
+        }
+
+        public async Task<IAssetEntity> FindAssetAsync(Guid id)
+        {
+            var asset = cachedAssets.GetOrDefault(id);
+
+            if (asset == null)
+            {
+                asset = await assetRepository.FindAssetAsync(id);
+
+                if (asset != null)
+                {
+                    cachedAssets[asset.Id] = asset;
+                }
+            }
+
+            return asset;
+        }
+
+        public async Task<IContentEntity> FindContentAsync(Guid schemaId, Guid id)
+        {
+            var content = cachedContents.GetOrDefault(id);
+
+            if (content == null)
+            {
+                content = await contentQuery.FindContentAsync(context.WithSchemaId(schemaId), id);
+
+                if (content != null)
+                {
+                    cachedContents[content.Id] = content;
+                }
+            }
+
+            return content;
+        }
+
+        public async Task<IResultList<IAssetEntity>> QueryAssetsAsync(string query)
+        {
+            var assets = await assetRepository.QueryAsync(context.App.Id, query);
+
+            foreach (var asset in assets)
+            {
+                cachedAssets[asset.Id] = asset;
+            }
+
+            return assets;
+        }
+
+        public async Task<IResultList<IContentEntity>> QueryContentsAsync(string schemaIdOrName, string query)
+        {
+            var result = await contentQuery.QueryAsync(context.WithSchemaName(schemaIdOrName), query);
+
+            foreach (var content in result)
+            {
+                cachedContents[content.Id] = content;
+            }
+
+            return result;
+        }
+
+        public async Task<IReadOnlyList<IAssetEntity>> GetReferencedAssetsAsync(ICollection<Guid> ids)
+        {
+            Guard.NotNull(ids, nameof(ids));
+
+            var notLoadedAssets = new HashSet<Guid>(ids.Where(id => !cachedAssets.ContainsKey(id)));
+
+            if (notLoadedAssets.Count > 0)
+            {
+                var assets = await assetRepository.QueryAsync(context.App.Id, notLoadedAssets);
+
+                foreach (var asset in assets)
+                {
+                    cachedAssets[asset.Id] = asset;
+                }
+            }
+
+            return ids.Select(cachedAssets.GetOrDefault).Where(x => x != null).ToList();
+        }
+
+        public async Task<IReadOnlyList<IContentEntity>> GetReferencedContentsAsync(Guid schemaId, ICollection<Guid> ids)
+        {
+            Guard.NotNull(ids, nameof(ids));
+
+            var notLoadedContents = new HashSet<Guid>(ids.Where(id => !cachedContents.ContainsKey(id)));
+
+            if (notLoadedContents.Count > 0)
+            {
+                var result = await contentQuery.QueryAsync(context.WithSchemaId(schemaId), notLoadedContents);
+
+                foreach (var content in result)
+                {
+                    cachedContents[content.Id] = content;
+                }
+            }
+
+            return ids.Select(cachedContents.GetOrDefault).Where(x => x != null).ToList();
+        }
+    }
+}

src/Squidex/Areas/Api/Controllers/Contents/ContentsController.cs

@@ -61,7 +61,7 @@ namespace Squidex.Areas.Api.Controllers.Contents
         [ApiCosts(2)]
         public async Task<IActionResult> PostGraphQL(string app, [FromBody] GraphQLQuery query)
         {
-            var result = await graphQl.QueryAsync(App, User, query);
+            var result = await graphQl.QueryAsync(Context(), query);
 
             if (result.Errors?.Length > 0)
             {
@@ -108,17 +108,17 @@ namespace Squidex.Areas.Api.Controllers.Contents
                 }
             }
 
-            var isFrontendClient = User.IsFrontendClient();
+            var context = Context().WithSchemaName(name).WithArchived(archived);
 
             var result =
                 idsList?.Count > 0 ?
-                    await contentQuery.QueryAsync(App, name, User, archived, idsList) :
+                    await contentQuery.QueryAsync(context, idsList) :
-                    await contentQuery.QueryAsync(App, name, User, archived, Request.QueryString.ToString());
+                    await contentQuery.QueryAsync(context, Request.QueryString.ToString());
 
             var response = new ContentsDto
             {
                 Total = result.Total,
-                Items = result.Take(200).Select(ContentDto.FromContent).ToArray()
+                Items = result.Take(200).Select(x => ContentDto.FromContent(x, context)).ToArray()
             };
 
             Response.Headers["Surrogate-Key"] = string.Join(" ", response.Items.Select(x => x.Id));
@@ -145,9 +145,10 @@ namespace Squidex.Areas.Api.Controllers.Contents
         [ApiCosts(1)]
         public async Task<IActionResult> GetContent(string app, string name, Guid id)
         {
-            var content = await contentQuery.FindContentAsync(App, name, User, id);
+            var context = Context().WithSchemaName(name);
+            var content = await contentQuery.FindContentAsync(context, id);
 
-            var response = ContentDto.FromContent(content);
+            var response = ContentDto.FromContent(content, context);
 
             Response.Headers["ETag"] = content.Version.ToString();
             Response.Headers["Surrogate-Key"] = content.Id.ToString();
@@ -176,9 +177,10 @@ namespace Squidex.Areas.Api.Controllers.Contents
         [ApiCosts(1)]
         public async Task<IActionResult> GetContentVersion(string app, string name, Guid id, int version)
         {
-            var content = await contentQuery.FindContentAsync(App, name, User, id, version);
+            var context = Context().WithSchemaName(name);
+            var content = await contentQuery.FindContentAsync(context, id, version);
 
-            var response = ContentDto.FromContent(content);
+            var response = ContentDto.FromContent(content, context);
 
             Response.Headers["ETag"] = content.Version.ToString();
             Response.Headers["Surrogate-Key"] = content.Id.ToString();
@@ -207,7 +209,7 @@ namespace Squidex.Areas.Api.Controllers.Contents
         [ApiCosts(1)]
         public async Task<IActionResult> PostContent(string app, string name, [FromBody] NamedContentData request, [FromQuery] bool publish = false)
         {
-            await contentQuery.ThrowIfSchemaNotExistsAsync(App, name);
+            await contentQuery.ThrowIfSchemaNotExistsAsync(Context().WithSchemaName(name));
 
             var command = new CreateContent { ContentId = Guid.NewGuid(), Data = request.ToCleaned(), Publish = publish };
 
@@ -241,7 +243,7 @@ namespace Squidex.Areas.Api.Controllers.Contents
         [ApiCosts(1)]
         public async Task<IActionResult> PutContent(string app, string name, Guid id, [FromBody] NamedContentData request, [FromQuery] bool asDraft = false)
         {
-            await contentQuery.ThrowIfSchemaNotExistsAsync(App, name);
+            await contentQuery.ThrowIfSchemaNotExistsAsync(Context().WithSchemaName(name));
 
             var command = new UpdateContent { ContentId = id, Data = request.ToCleaned(), AsDraft = asDraft };
             var context = await CommandBus.PublishAsync(command);
@@ -274,7 +276,7 @@ namespace Squidex.Areas.Api.Controllers.Contents
         [ApiCosts(1)]
         public async Task<IActionResult> PatchContent(string app, string name, Guid id, [FromBody] NamedContentData request, [FromQuery] bool asDraft = false)
         {
-            await contentQuery.ThrowIfSchemaNotExistsAsync(App, name);
+            await contentQuery.ThrowIfSchemaNotExistsAsync(Context().WithSchemaName(name));
 
             var command = new PatchContent { ContentId = id, Data = request.ToCleaned(), AsDraft = asDraft };
             var context = await CommandBus.PublishAsync(command);
@@ -306,7 +308,7 @@ namespace Squidex.Areas.Api.Controllers.Contents
         [ApiCosts(1)]
         public async Task<IActionResult> PublishContent(string app, string name, Guid id, string dueTime = null)
         {
-            await contentQuery.ThrowIfSchemaNotExistsAsync(App, name);
+            await contentQuery.ThrowIfSchemaNotExistsAsync(Context().WithSchemaName(name));
 
             var command = CreateCommand(id, Status.Published, dueTime);
 
@@ -336,7 +338,7 @@ namespace Squidex.Areas.Api.Controllers.Contents
         [ApiCosts(1)]
         public async Task<IActionResult> UnpublishContent(string app, string name, Guid id, string dueTime = null)
         {
-            await contentQuery.ThrowIfSchemaNotExistsAsync(App, name);
+            await contentQuery.ThrowIfSchemaNotExistsAsync(Context().WithSchemaName(name));
 
             var command = CreateCommand(id, Status.Draft, dueTime);
 
@@ -366,7 +368,7 @@ namespace Squidex.Areas.Api.Controllers.Contents
         [ApiCosts(1)]
         public async Task<IActionResult> ArchiveContent(string app, string name, Guid id, string dueTime = null)
         {
-            await contentQuery.ThrowIfSchemaNotExistsAsync(App, name);
+            await contentQuery.ThrowIfSchemaNotExistsAsync(Context().WithSchemaName(name));
 
             var command = CreateCommand(id, Status.Archived, dueTime);
 
@@ -396,7 +398,7 @@ namespace Squidex.Areas.Api.Controllers.Contents
         [ApiCosts(1)]
         public async Task<IActionResult> RestoreContent(string app, string name, Guid id, string dueTime = null)
         {
-            await contentQuery.ThrowIfSchemaNotExistsAsync(App, name);
+            await contentQuery.ThrowIfSchemaNotExistsAsync(Context().WithSchemaName(name));
 
             var command = CreateCommand(id, Status.Draft, dueTime);
 
@@ -425,7 +427,7 @@ namespace Squidex.Areas.Api.Controllers.Contents
         [ApiCosts(1)]
         public async Task<IActionResult> DiscardChanges(string app, string name, Guid id)
         {
-            await contentQuery.ThrowIfSchemaNotExistsAsync(App, name);
+            await contentQuery.ThrowIfSchemaNotExistsAsync(Context().WithSchemaName(name));
 
             var command = new DiscardChanges { ContentId = id };
 
@@ -453,7 +455,7 @@ namespace Squidex.Areas.Api.Controllers.Contents
         [ApiCosts(1)]
         public async Task<IActionResult> DeleteContent(string app, string name, Guid id)
         {
-            await contentQuery.ThrowIfSchemaNotExistsAsync(App, name);
+            await contentQuery.ThrowIfSchemaNotExistsAsync(Context().WithSchemaName(name));
 
             var command = new DeleteContent { ContentId = id };
 
@@ -478,5 +480,10 @@ namespace Squidex.Areas.Api.Controllers.Contents
 
             return new ChangeContentStatus { Status = status, ContentId = id, DueTime = dt };
         }
+
+        private QueryContext Context()
+        {
+            return QueryContext.Create(App, User, Request.Headers["X-Languages"]).WithFlatten(Request.Headers.ContainsKey("X-Flatten"));
+        }
     }
 }

src/Squidex/Areas/Api/Controllers/Contents/Models/ContentDto.cs

@@ -9,6 +9,7 @@ using System;
 using System.ComponentModel.DataAnnotations;
 using NodaTime;
 using Squidex.Domain.Apps.Core.Contents;
+using Squidex.Domain.Apps.Core.ConvertContent;
 using Squidex.Domain.Apps.Entities.Contents;
 using Squidex.Domain.Apps.Entities.Contents.Commands;
 using Squidex.Infrastructure;
@@ -96,12 +97,20 @@ namespace Squidex.Areas.Api.Controllers.Contents.Models
             return response;
         }
 
-        public static ContentDto FromContent(IContentEntity content)
+        public static ContentDto FromContent(IContentEntity content, QueryContext context)
         {
             var response = SimpleMapper.Map(content, new ContentDto());
 
+            if (context.Flatten)
+            {
+                response.Data = content.Data?.ToFlatten();
+                response.DataDraft = content.DataDraft?.ToFlatten();
+            }
+            else
+            {
                 response.Data = content.Data;
                 response.DataDraft = content.DataDraft;
+            }
 
             if (content.ScheduleJob != null)
             {

tests/Squidex.Domain.Apps.Core.Tests/Operations/ConvertContent/ContentConversionFlatTests.cs

@@ -0,0 +1,153 @@
+// ==========================================================================
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex UG (haftungsbeschränkt)
+//  All rights reserved. Licensed under the MIT license.
+// ==========================================================================
+
+using System.Collections.Generic;
+using Newtonsoft.Json.Linq;
+using Squidex.Domain.Apps.Core.Apps;
+using Squidex.Domain.Apps.Core.Contents;
+using Squidex.Domain.Apps.Core.ConvertContent;
+using Squidex.Domain.Apps.Core.Schemas;
+using Squidex.Infrastructure;
+using Xunit;
+
+#pragma warning disable xUnit2013 // Do not use equality check to check for collection size.
+
+namespace Squidex.Domain.Apps.Core.Operations.ConvertContent
+{
+    public class ContentConversionFlatTests
+    {
+        private readonly Schema schema;
+        private readonly LanguagesConfig languagesConfig = LanguagesConfig.Build(Language.EN, Language.DE);
+
+        public ContentConversionFlatTests()
+        {
+            schema =
+                new Schema("my-schema")
+                    .AddField(new NumberField(1, "field1", Partitioning.Language))
+                    .AddField(new NumberField(2, "field2", Partitioning.Invariant))
+                    .AddField(new NumberField(3, "field3", Partitioning.Invariant))
+                    .AddField(new AssetsField(5, "assets1", Partitioning.Invariant))
+                    .AddField(new AssetsField(6, "assets2", Partitioning.Invariant))
+                    .AddField(new JsonField(4, "json", Partitioning.Language))
+                    .HideField(3);
+        }
+
+        [Fact]
+        public void Should_return_original_when_no_language_preferences_defined()
+        {
+            var data =
+                new NamedContentData()
+                    .AddField("field1",
+                        new ContentFieldData()
+                            .AddValue("iv", 1));
+
+            Assert.Same(data, data.ToFlatLanguageModel(languagesConfig));
+        }
+
+        [Fact]
+        public void Should_return_flatten_value()
+        {
+            var data =
+                new NamedContentData()
+                    .AddField("field1",
+                        new ContentFieldData()
+                            .AddValue("de", 1)
+                            .AddValue("en", 2))
+                    .AddField("field2",
+                        new ContentFieldData()
+                            .AddValue("de", null)
+                            .AddValue("en", 4))
+                    .AddField("field3",
+                        new ContentFieldData()
+                            .AddValue("en", 6))
+                    .AddField("field4",
+                        new ContentFieldData()
+                            .AddValue("it", 7));
+
+            var output = data.ToFlatten();
+
+            var expected = new Dictionary<string, object>
+            {
+                { "field1", new ContentFieldData().AddValue("de", 1).AddValue("en", 2) },
+                { "field2", new ContentFieldData().AddValue("de", null).AddValue("en", 4) },
+                { "field3", (JValue)6 },
+                { "field4", (JValue)7 }
+            };
+
+            Assert.True(expected.EqualsDictionary(output));
+        }
+
+        [Fact]
+        public void Should_return_flat_list_when_single_languages_specified()
+        {
+            var data =
+                new NamedContentData()
+                    .AddField("field1",
+                        new ContentFieldData()
+                            .AddValue("de", 1)
+                            .AddValue("en", 2))
+                    .AddField("field2",
+                        new ContentFieldData()
+                            .AddValue("de", null)
+                            .AddValue("en", 4))
+                    .AddField("field3",
+                        new ContentFieldData()
+                            .AddValue("en", 6))
+                    .AddField("field4",
+                        new ContentFieldData()
+                            .AddValue("it", 7));
+
+            var fallbackConfig =
+                LanguagesConfig.Build(
+                    new LanguageConfig(Language.EN),
+                    new LanguageConfig(Language.DE, false, Language.EN));
+
+            var output = (Dictionary<string, JToken>)data.ToFlatLanguageModel(fallbackConfig, new List<Language> { Language.DE });
+
+            var expected = new Dictionary<string, JToken>
+            {
+                { "field1", 1 },
+                { "field2", 4 },
+                { "field3", 6 }
+            };
+
+            Assert.True(expected.EqualsDictionary(output));
+        }
+
+        [Fact]
+        public void Should_return_flat_list_when_languages_specified()
+        {
+            var data =
+                new NamedContentData()
+                    .AddField("field1",
+                        new ContentFieldData()
+                            .AddValue("de", 1)
+                            .AddValue("en", 2))
+                    .AddField("field2",
+                        new ContentFieldData()
+                            .AddValue("de", null)
+                            .AddValue("en", 4))
+                    .AddField("field3",
+                        new ContentFieldData()
+                            .AddValue("en", 6))
+                    .AddField("field4",
+                        new ContentFieldData()
+                            .AddValue("it", 7));
+
+            var output = (Dictionary<string, JToken>)data.ToFlatLanguageModel(languagesConfig, new List<Language> { Language.DE, Language.EN });
+
+            var expected = new Dictionary<string, JToken>
+            {
+                { "field1", 1 },
+                { "field2", 4 },
+                { "field3", 6 }
+            };
+
+            Assert.True(expected.EqualsDictionary(output));
+        }
+    }
+}

tests/Squidex.Domain.Apps.Core.Tests/Operations/ConvertContent/ContentConversionTests.cs

@@ -5,23 +5,16 @@
 //  All rights reserved. Licensed under the MIT license.
 // ==========================================================================
 
-using System.Collections.Generic;
-using Newtonsoft.Json.Linq;
-using Squidex.Domain.Apps.Core.Apps;
 using Squidex.Domain.Apps.Core.Contents;
 using Squidex.Domain.Apps.Core.ConvertContent;
 using Squidex.Domain.Apps.Core.Schemas;
-using Squidex.Infrastructure;
 using Xunit;
 
-#pragma warning disable xUnit2013 // Do not use equality check to check for collection size.
-
 namespace Squidex.Domain.Apps.Core.Operations.ConvertContent
 {
     public class ContentConversionTests
     {
         private readonly Schema schema;
-        private readonly LanguagesConfig languagesConfig = LanguagesConfig.Build(Language.EN, Language.DE);
 
         public ContentConversionTests()
         {
@@ -43,380 +36,101 @@ namespace Squidex.Domain.Apps.Core.Operations.ConvertContent
                new NamedContentData()
                     .AddField("field1",
                         new ContentFieldData()
-                            .AddValue("en", "en_string")
+                            .AddValue("en", "EN"))
-                            .AddValue("de", "de_string"))
                     .AddField("field2",
                         new ContentFieldData()
-                            .AddValue("iv", 3))
+                            .AddValue("iv", 1))
                     .AddField("invalid",
                         new ContentFieldData()
-                            .AddValue("iv", 3));
+                            .AddValue("iv", 2));
 
-            var actual = input.ToIdModel(schema, false);
+            var actual = input.ToIdModel(schema, (data, field) => field.Name == "field2" ? null : data);
 
             var expected =
                 new IdContentData()
                     .AddField(1,
                         new ContentFieldData()
-                            .AddValue("en", "en_string")
+                            .AddValue("en", "EN"));
-                            .AddValue("de", "de_string"))
-                    .AddField(2,
-                        new ContentFieldData()
-                            .AddValue("iv", 3));
 
             Assert.Equal(expected, actual);
         }
 
         [Fact]
-        public void Should_convert_to_encoded_id_model()
+        public void Should_convert_id_model()
-        {
-            var input =
-               new NamedContentData()
-                    .AddField("json",
-                        new ContentFieldData()
-                            .AddValue("en", new JObject())
-                            .AddValue("de", null)
-                            .AddValue("it", JValue.CreateNull()));
-
-            var actual = input.ToIdModel(schema, true);
-
-            var expected =
-                new IdContentData()
-                    .AddField(4,
-                        new ContentFieldData()
-                            .AddValue("en", "e30=")
-                            .AddValue("de", null)
-                            .AddValue("it", null));
-
-            Assert.Equal(expected, actual);
-        }
-
-        [Fact]
-        public void Should_convert_to_name_model()
         {
             var input =
                new IdContentData()
                     .AddField(1,
                         new ContentFieldData()
-                            .AddValue("en", "en_string")
+                            .AddValue("en", "EN"))
-                            .AddValue("de", "de_string"))
                     .AddField(2,
                         new ContentFieldData()
-                            .AddValue("iv", 3))
+                            .AddValue("iv", 1))
                     .AddField(99,
                         new ContentFieldData()
-                            .AddValue("iv", 3));
+                            .AddValue("iv", 2));
 
-            var actual = input.ToNameModel(schema, false);
+            var actual = input.Convert(schema, (data, field) => field.Name == "field2" ? null : data);
 
             var expected =
-                new NamedContentData()
-                    .AddField("field1",
-                        new ContentFieldData()
-                            .AddValue("en", "en_string")
-                            .AddValue("de", "de_string"))
-                    .AddField("field2",
-                        new ContentFieldData()
-                            .AddValue("iv", 3));
-
-            Assert.Equal(expected, actual);
-        }
-
-        [Fact]
-        public void Should_convert_to_encoded_name_model()
-        {
-            var input =
                 new IdContentData()
-                    .AddField(4,
+                    .AddField(1,
-                        new ContentFieldData()
-                            .AddValue("en", "e30=")
-                            .AddValue("de", null)
-                            .AddValue("it", null));
-
-            var actual = input.ToNameModel(schema, true);
-
-            Assert.True(actual["json"]["en"] is JObject);
-        }
-
-        [Fact]
-        public void Should_cleanup_old_fields()
-        {
-            var input =
-                new NamedContentData()
-                    .AddField("field0",
-                        new ContentFieldData()
-                            .AddValue("en", "en_string"))
-                    .AddField("field1",
-                        new ContentFieldData()
-                            .AddValue("en", "en_string")
-                            .AddValue("de", "de_string"));
-
-            var actual = input.ToApiModel(schema, languagesConfig);
-
-            var expected =
-                new NamedContentData()
-                    .AddField("field1",
-                        new ContentFieldData()
-                            .AddValue("en", "en_string")
-                            .AddValue("de", "de_string"));
-
-            Assert.Equal(expected, actual);
-        }
-
-        [Fact]
-        public void Should_cleanup_old_languages()
-        {
-            var input =
-                new NamedContentData()
-                    .AddField("field1",
-                        new ContentFieldData()
-                            .AddValue("en", "en_string")
-                            .AddValue("de", "de_string")
-                            .AddValue("it", "it_string"));
-
-            var actual = input.ToApiModel(schema, languagesConfig);
-
-            var expected =
-                new NamedContentData()
-                    .AddField("field1",
-                        new ContentFieldData()
-                            .AddValue("en", "en_string")
-                            .AddValue("de", "de_string"));
-
-            Assert.Equal(expected, actual);
-        }
-
-        [Fact]
-        public void Should_provide_invariant_from_master_language()
-        {
-            var input =
-                new NamedContentData()
-                    .AddField("field2",
-                        new ContentFieldData()
-                            .AddValue("de", 2)
-                            .AddValue("en", 3));
-
-            var actual = input.ToApiModel(schema, languagesConfig);
-
-            var expected =
-                new NamedContentData()
-                    .AddField("field2",
-                        new ContentFieldData()
-                            .AddValue("iv", 3));
-
-            Assert.Equal(expected, actual);
-        }
-
-        [Fact]
-        public void Should_provide_master_language_from_invariant()
-        {
-            var input =
-                new NamedContentData()
-                    .AddField("field1",
-                        new ContentFieldData()
-                            .AddValue("iv", 3));
-
-            var actual = input.ToApiModel(schema, languagesConfig);
-
-            var expected =
-                new NamedContentData()
-                    .AddField("field1",
-                        new ContentFieldData()
-                            .AddValue("en", 3));
-
-            Assert.Equal(expected, actual);
-        }
-
-        [Fact]
-        public void Should_remove_null_values_from_name_model_when_cleaning()
-        {
-            var input =
-                new NamedContentData()
-                    .AddField("field1", null)
-                    .AddField("field2",
-                        new ContentFieldData()
-                            .AddValue("en", 2)
-                            .AddValue("it", null));
-
-            var actual = input.ToCleaned();
-
-            var expected =
-                new NamedContentData()
-                    .AddField("field2",
                         new ContentFieldData()
-                            .AddValue("en", 2));
+                            .AddValue("en", "EN"));
 
             Assert.Equal(expected, actual);
         }
 
         [Fact]
-        public void Should_remove_null_values_from_id_model_when_cleaning()
+        public void Should_convert_to_name_model()
         {
             var input =
                new IdContentData()
-                    .AddField(1, null)
+                    .AddField(1,
-                    .AddField(2,
                         new ContentFieldData()
-                            .AddValue("en", 2)
+                            .AddValue("en", "EN"))
-                            .AddValue("it", null));
-
-            var actual = input.ToCleaned();
-
-            var expected =
-                new IdContentData()
                     .AddField(2,
                         new ContentFieldData()
-                            .AddValue("en", 2));
+                            .AddValue("iv", 1))
-
+                    .AddField(99,
-            Assert.Equal(expected, actual);
-        }
-
-        [Fact]
-        public void Should_provide_invariant_from_first_language()
-        {
-            var input =
-                new NamedContentData()
-                    .AddField("field2",
-                        new ContentFieldData()
-                            .AddValue("de", 2)
-                            .AddValue("it", 3));
-
-            var actual = input.ToApiModel(schema, languagesConfig);
-
-            var expected =
-                new NamedContentData()
-                    .AddField("field2",
-                        new ContentFieldData()
-                            .AddValue("iv", 2));
-
-            Assert.Equal(expected, actual);
-        }
-
-        [Fact]
-        public void Should_not_include_hidden_field()
-        {
-            var input =
-                new NamedContentData()
-                    .AddField("field2",
-                        new ContentFieldData()
-                            .AddValue("iv", 5))
-                    .AddField("field3",
                         new ContentFieldData()
                             .AddValue("iv", 2));
 
-            var actual = input.ToApiModel(schema, languagesConfig);
+            var actual = input.ToNameModel(schema, (data, field) => field.Name == "field2" ? null : data);
 
             var expected =
                 new NamedContentData()
-                    .AddField("field2",
+                    .AddField("field1",
                         new ContentFieldData()
-                            .AddValue("iv", 5));
+                            .AddValue("en", "EN"));
 
             Assert.Equal(expected, actual);
         }
 
         [Fact]
-        public void Should_not_include_invalid_field_types()
+        public void Should_convert_name_model()
         {
             var input =
                new NamedContentData()
                     .AddField("field1",
                         new ContentFieldData()
-                            .AddValue("iv", "INVALID"))
+                            .AddValue("en", "EN"))
                     .AddField("field2",
                         new ContentFieldData()
-                            .AddValue("iv", 2));
+                            .AddValue("iv", 1))
-
+                    .AddField("invalid",
-            var actual = input.ToApiModel(schema, languagesConfig, checkTypeCompatibility: true);
-
-            var expected =
-                new NamedContentData()
-                    .AddField("field2",
                         new ContentFieldData()
                             .AddValue("iv", 2));
 
-            Assert.Equal(expected, actual);
+            var actual = input.Convert(schema, (data, field) => field.Name == "field2" ? null : data);
-        }
-
-        [Fact]
-        public void Should_return_original_when_no_language_preferences_defined()
-        {
-            var data =
-                new NamedContentData()
-                    .AddField("field1",
-                        new ContentFieldData()
-                            .AddValue("iv", 1));
-
-            Assert.Same(data, data.ToLanguageModel(languagesConfig));
-        }
-
-        [Fact]
-        public void Should_return_flat_list_when_single_languages_specified()
-        {
-            var data =
-                new NamedContentData()
-                    .AddField("field1",
-                        new ContentFieldData()
-                            .AddValue("de", 1)
-                            .AddValue("en", 2))
-                    .AddField("field2",
-                        new ContentFieldData()
-                            .AddValue("de", null)
-                            .AddValue("en", 4))
-                    .AddField("field3",
-                        new ContentFieldData()
-                            .AddValue("en", 6))
-                    .AddField("field4",
-                        new ContentFieldData()
-                            .AddValue("it", 7));
-
-            var fallbackConfig =
-                LanguagesConfig.Build(
-                    new LanguageConfig(Language.EN),
-                    new LanguageConfig(Language.DE, false, Language.EN));
-
-            var output = (Dictionary<string, JToken>)data.ToLanguageModel(fallbackConfig, new List<Language> { Language.DE });
-
-            var expected = new Dictionary<string, JToken>
-            {
-                { "field1", 1 },
-                { "field2", 4 },
-                { "field3", 6 }
-            };
-
-            Assert.True(expected.EqualsDictionary(output));
-        }
 
-        [Fact]
+            var expected =
-        public void Should_return_flat_list_when_languages_specified()
-        {
-            var data =
                 new NamedContentData()
                     .AddField("field1",
                         new ContentFieldData()
-                            .AddValue("de", 1)
+                            .AddValue("en", "EN"));
-                            .AddValue("en", 2))
-                    .AddField("field2",
-                        new ContentFieldData()
-                            .AddValue("de", null)
-                            .AddValue("en", 4))
-                    .AddField("field3",
-                        new ContentFieldData()
-                            .AddValue("en", 6))
-                    .AddField("field4",
-                        new ContentFieldData()
-                            .AddValue("it", 7));
-
-            var output = (Dictionary<string, JToken>)data.ToLanguageModel(languagesConfig, new List<Language> { Language.DE, Language.EN });
 
-            var expected = new Dictionary<string, JToken>
+            Assert.Equal(expected, actual);
-            {
-                { "field1", 1 },
-                { "field2", 4 },
-                { "field3", 6 }
-            };
-
-            Assert.True(expected.EqualsDictionary(output));
         }
 
         [Fact]

tests/Squidex.Domain.Apps.Core.Tests/Operations/ConvertContent/FieldConvertersTests.cs

@@ -0,0 +1,325 @@
+// ==========================================================================
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex UG (haftungsbeschraenkt)
+//  All rights reserved. Licensed under the MIT license.
+// ==========================================================================
+
+using System.Linq;
+using Newtonsoft.Json.Linq;
+using Squidex.Domain.Apps.Core.Apps;
+using Squidex.Domain.Apps.Core.Contents;
+using Squidex.Domain.Apps.Core.ConvertContent;
+using Squidex.Domain.Apps.Core.Schemas;
+using Squidex.Infrastructure;
+using Xunit;
+
+namespace Squidex.Domain.Apps.Core.Operations.ConvertContent
+{
+    public class FieldConvertersTests
+    {
+        private readonly LanguagesConfig languagesConfig = LanguagesConfig.Build(Language.EN, Language.DE);
+        private readonly StringField stringLanguageField = new StringField(1, "1", Partitioning.Language);
+        private readonly StringField stringInvariantField = new StringField(1, "1", Partitioning.Invariant);
+        private readonly NumberField numberField = new NumberField(1, "1", Partitioning.Invariant);
+
+        [Fact]
+        public void Should_encode_json_values()
+        {
+            var source =
+                new ContentFieldData()
+                    .AddValue("en", null)
+                    .AddValue("de", JToken.FromObject(new { Value = 1 }));
+
+            var result = FieldConverters.EncodeJson()(source, new JsonField(1, "1", Partitioning.Invariant));
+
+            Assert.Null(result["en"]);
+            Assert.True(result["de"].Type == JTokenType.String);
+        }
+
+        [Fact]
+        public void Should_return_same_values_if_encoding_non_json_field()
+        {
+            var source =
+                new ContentFieldData()
+                    .AddValue("en", null);
+
+            var result = FieldConverters.EncodeJson()(source, stringLanguageField);
+
+            Assert.Same(source, result);
+        }
+
+        [Fact]
+        public void Should_decode_json_values()
+        {
+            var source =
+                new ContentFieldData()
+                    .AddValue("en", null)
+                    .AddValue("de", "e30=");
+
+            var result = FieldConverters.DecodeJson()(source, new JsonField(1, "1", Partitioning.Invariant));
+
+            Assert.Null(result["en"]);
+            Assert.True(result["de"] is JObject);
+        }
+
+        [Fact]
+        public void Should_return_same_values_if_all_values_are_valid()
+        {
+            var source =
+                new ContentFieldData()
+                    .AddValue("en", null)
+                    .AddValue("de", 1);
+
+            var result = FieldConverters.ExcludeChangedTypes()(source, numberField);
+
+            Assert.Same(source, result);
+        }
+
+        [Fact]
+        public void Should_return_null_values_if_all_value_is_invalid()
+        {
+            var source =
+                new ContentFieldData()
+                    .AddValue("en", "EN")
+                    .AddValue("de", 0);
+
+            var result = FieldConverters.ExcludeChangedTypes()(source, numberField);
+
+            Assert.Null(result);
+        }
+
+        [Fact]
+        public void Should_return_same_values_if_decoding_non_json_field()
+        {
+            var source =
+                new ContentFieldData()
+                    .AddValue("en", null);
+
+            var result = FieldConverters.DecodeJson()(source, stringLanguageField);
+
+            Assert.Same(source, result);
+        }
+
+        [Fact]
+        public void Should_return_same_values_if_field_not_hidden()
+        {
+            var source = new ContentFieldData();
+
+            var result = FieldConverters.ExcludeHidden()(source, stringLanguageField);
+
+            Assert.Same(source, result);
+        }
+
+        [Fact]
+        public void Should_return_null_values_if_field_hidden()
+        {
+            var source = new ContentFieldData();
+
+            var result = FieldConverters.ExcludeHidden()(source, stringLanguageField.Hide());
+
+            Assert.Null(result);
+        }
+
+        [Fact]
+        public void Should_resolve_languages_and_cleanup_old_languages()
+        {
+            var source =
+                new ContentFieldData()
+                    .AddValue("en", "EN")
+                    .AddValue("it", "IT");
+
+            var expected =
+                new ContentFieldData()
+                    .AddValue("en", "EN");
+
+            var result = FieldConverters.ResolveLanguages(languagesConfig)(source, stringLanguageField);
+
+            Assert.Equal(expected, result);
+        }
+
+        [Fact]
+        public void Should_resolve_languages_and_resolve_master_language_from_invariant()
+        {
+            var source =
+                new ContentFieldData()
+                    .AddValue("iv", "A")
+                    .AddValue("it", "B");
+
+            var expected =
+                new ContentFieldData()
+                    .AddValue("en", "A");
+
+            var result = FieldConverters.ResolveLanguages(languagesConfig)(source, stringLanguageField);
+
+            Assert.Equal(expected, result);
+        }
+
+        [Fact]
+        public void Should_return_same_values_if_resolving_languages_from_invariant_field()
+        {
+            var source = new ContentFieldData();
+
+            var result = FieldConverters.ResolveLanguages(languagesConfig)(source, stringInvariantField);
+
+            Assert.Same(source, result);
+        }
+
+        [Fact]
+        public void Should_resolve_invariant_and_use_direct_value()
+        {
+            var source =
+                new ContentFieldData()
+                    .AddValue("iv", "A")
+                    .AddValue("it", "B");
+
+            var expected =
+                new ContentFieldData()
+                    .AddValue("iv", "A");
+
+            var result = FieldConverters.ResolveInvariant(languagesConfig)(source, stringInvariantField);
+
+            Assert.Equal(expected, result);
+        }
+
+        [Fact]
+        public void Should_resolve_invariant_and_resolve_invariant_from_master_language()
+        {
+            var source =
+                new ContentFieldData()
+                    .AddValue("de", "DE")
+                    .AddValue("en", "EN");
+
+            var expected =
+                new ContentFieldData()
+                    .AddValue("iv", "EN");
+
+            var result = FieldConverters.ResolveInvariant(languagesConfig)(source, stringInvariantField);
+
+            Assert.Equal(expected, result);
+        }
+
+        [Fact]
+        public void Should_resolve_invariant_and_resolve_invariant_from_first_language()
+        {
+            var source =
+                new ContentFieldData()
+                    .AddValue("de", "DE")
+                    .AddValue("it", "IT");
+
+            var expected =
+                new ContentFieldData()
+                    .AddValue("iv", "DE");
+
+            var result = FieldConverters.ResolveInvariant(languagesConfig)(source, stringInvariantField);
+
+            Assert.Equal(expected, result);
+        }
+
+        [Fact]
+        public void Should_return_same_values_if_resolving_invariant_from_language_field()
+        {
+            var source = new ContentFieldData();
+
+            var result = FieldConverters.ResolveInvariant(languagesConfig)(source, stringLanguageField);
+
+            Assert.Same(source, result);
+        }
+
+        [Fact]
+        public void Should_return_language_from_fallback_if_found()
+        {
+            var config_1 = languagesConfig.Set(new LanguageConfig(Language.IT));
+            var config_2 = config_1.Set(new LanguageConfig(Language.ES, false, Language.IT));
+
+            var source =
+                new ContentFieldData()
+                    .AddValue("en", "EN")
+                    .AddValue("it", "IT");
+
+            var expected =
+                new ContentFieldData()
+                    .AddValue("en", "EN")
+                    .AddValue("de", "EN")
+                    .AddValue("it", "IT")
+                    .AddValue("es", "IT");
+
+            var result = FieldConverters.ResolveFallbackLanguages(config_2)(source, stringLanguageField);
+
+            Assert.Equal(expected, result);
+        }
+
+        [Fact]
+        public void Should_not_return_value_if_master_is_missing()
+        {
+            var source =
+                new ContentFieldData()
+                    .AddValue("de", "DE");
+
+            var expected =
+                new ContentFieldData()
+                    .AddValue("de", "DE");
+
+            var result = FieldConverters.ResolveFallbackLanguages(languagesConfig)(source, stringLanguageField);
+
+            Assert.Equal(expected, result);
+        }
+
+        [Fact]
+        public void Should_filter_languages()
+        {
+            var source =
+                new ContentFieldData()
+                    .AddValue("en", "EN")
+                    .AddValue("de", "DE");
+
+            var expected =
+                new ContentFieldData()
+                    .AddValue("de", "DE");
+
+            var result = FieldConverters.FilterLanguages(languagesConfig, new[] { Language.DE })(source, stringLanguageField);
+
+            Assert.Equal(expected, result);
+        }
+
+        [Fact]
+        public void Should_return_same_values_if_resolving_fallback_languages_from_invariant_field()
+        {
+            var source = new ContentFieldData();
+
+            var result = FieldConverters.ResolveFallbackLanguages(languagesConfig)(source, stringInvariantField);
+
+            Assert.Same(source, result);
+        }
+
+        [Fact]
+        public void Should_return_same_values_if_filtered_languages_are_invalid()
+        {
+            var source = new ContentFieldData();
+
+            var result = FieldConverters.FilterLanguages(languagesConfig, new[] { Language.CA })(source, stringLanguageField);
+
+            Assert.Same(source, result);
+        }
+
+        [Fact]
+        public void Should_return_same_values_if_filtered_languages_is_empty()
+        {
+            var source = new ContentFieldData();
+
+            var result = FieldConverters.FilterLanguages(languagesConfig, Enumerable.Empty<Language>())(source, stringLanguageField);
+
+            Assert.Same(source, result);
+        }
+
+        [Fact]
+        public void Should_return_same_values_if_filtering_languages_from_invariant_field()
+        {
+            var source = new ContentFieldData();
+
+            var result = FieldConverters.FilterLanguages(languagesConfig, null)(source, stringInvariantField);
+
+            Assert.Same(source, result);
+        }
+    }
+}

tests/Squidex.Domain.Apps.Core.Tests/Operations/ExtractReferenceIds/ReferenceExtractionTests.cs

@@ -11,6 +11,7 @@ using System.Linq;
 using Newtonsoft.Json.Linq;
 using Squidex.Domain.Apps.Core.Apps;
 using Squidex.Domain.Apps.Core.Contents;
+using Squidex.Domain.Apps.Core.ConvertContent;
 using Squidex.Domain.Apps.Core.ExtractReferenceIds;
 using Squidex.Domain.Apps.Core.Schemas;
 using Squidex.Infrastructure;
@@ -68,7 +69,7 @@ namespace Squidex.Domain.Apps.Core.Operations.ExtractReferenceIds
                         new ContentFieldData()
                             .AddValue("iv", new JArray(id1.ToString(), id2.ToString())));
 
-            var actual = input.ToCleanedReferences(schema, new HashSet<Guid>(new[] { id2 }));
+            var actual = input.Convert(schema, FieldReferencesConverter.CleanReferences(new[] { id2 }));
 
             var cleanedValue = (JArray)actual[5]["iv"];
 

tests/Squidex.Domain.Apps.Entities.Tests/Contents/ContentQueryServiceTests.cs

@@ -47,6 +47,7 @@ namespace Squidex.Domain.Apps.Entities.Contents
         private readonly ClaimsPrincipal user;
         private readonly ClaimsIdentity identity = new ClaimsIdentity();
         private readonly EdmModelBuilder modelBuilder = A.Fake<EdmModelBuilder>();
+        private readonly QueryContext context;
         private readonly ContentQueryService sut;
 
         public ContentQueryServiceTests()
@@ -64,6 +65,8 @@ namespace Squidex.Domain.Apps.Entities.Contents
 
             A.CallTo(() => schema.SchemaDef).Returns(new Schema("my-schema"));
 
+            context = QueryContext.Create(app, user);
+
             sut = new ContentQueryService(contentRepository, contentVersionLoader, appProvider, scriptEngine, modelBuilder);
         }
 
@@ -73,7 +76,7 @@ namespace Squidex.Domain.Apps.Entities.Contents
             A.CallTo(() => appProvider.GetSchemaAsync(appId, schemaId, false))
                 .Returns(schema);
 
-            var result = await sut.GetSchemaAsync(app, schemaId.ToString());
+            var result = await sut.GetSchemaAsync(context.WithSchemaId(schemaId));
 
             Assert.Equal(schema, result);
         }
@@ -84,7 +87,7 @@ namespace Squidex.Domain.Apps.Entities.Contents
             A.CallTo(() => appProvider.GetSchemaAsync(appId, "my-schema"))
                 .Returns(schema);
 
-            var result = await sut.GetSchemaAsync(app, "my-schema");
+            var result = await sut.GetSchemaAsync(context.WithSchemaName("my-schema"));
 
             Assert.Equal(schema, result);
         }
@@ -95,7 +98,7 @@ namespace Squidex.Domain.Apps.Entities.Contents
             A.CallTo(() => appProvider.GetSchemaAsync(appId, "my-schema"))
                 .Returns((ISchemaEntity)null);
 
-            await Assert.ThrowsAsync<DomainObjectNotFoundException>(() => sut.GetSchemaAsync(app, "my-schema"));
+            await Assert.ThrowsAsync<DomainObjectNotFoundException>(() => sut.GetSchemaAsync(context.WithSchemaName("my-schema")));
         }
 
         [Fact]
@@ -104,7 +107,7 @@ namespace Squidex.Domain.Apps.Entities.Contents
             A.CallTo(() => appProvider.GetSchemaAsync(appId, "my-schema"))
                 .Returns((ISchemaEntity)null);
 
-            await Assert.ThrowsAsync<DomainObjectNotFoundException>(() => sut.ThrowIfSchemaNotExistsAsync(app, "my-schema"));
+            await Assert.ThrowsAsync<DomainObjectNotFoundException>(() => sut.ThrowIfSchemaNotExistsAsync(context.WithSchemaName("my-schema")));
         }
 
         public static IEnumerable<object[]> SingleRequestData = new[]
@@ -130,7 +133,7 @@ namespace Squidex.Domain.Apps.Entities.Contents
             A.CallTo(() => scriptEngine.Transform(A<ScriptContext>.That.Matches(x => x.User == user && x.ContentId == contentId && ReferenceEquals(x.Data, contentData)), "<query-script>"))
                 .Returns(contentTransformed);
 
-            var result = await sut.FindContentAsync(app, schemaId.ToString(), user, contentId);
+            var result = await sut.FindContentAsync(context.WithSchemaId(schemaId), contentId);
 
             Assert.Equal(contentTransformed, result.Data);
             Assert.Equal(content.Id, result.Id);
@@ -150,7 +153,7 @@ namespace Squidex.Domain.Apps.Entities.Contents
             A.CallTo(() => scriptEngine.Transform(A<ScriptContext>.That.Matches(x => x.User == user && x.ContentId == contentId && ReferenceEquals(x.Data, contentData)), "<query-script>"))
                 .Returns(contentTransformed);
 
-            var result = await sut.FindContentAsync(app, schemaId.ToString(), user, contentId, 10);
+            var result = await sut.FindContentAsync(context.WithSchemaId(schemaId), contentId, 10);
 
             Assert.Equal(contentTransformed, result.Data);
             Assert.Equal(content.Id, result.Id);
@@ -165,7 +168,7 @@ namespace Squidex.Domain.Apps.Entities.Contents
             A.CallTo(() => contentRepository.FindContentAsync(app, schema, new[] { Status.Published }, contentId))
                 .Returns((IContentEntity)null);
 
-            await Assert.ThrowsAsync<DomainObjectNotFoundException>(async () => await sut.FindContentAsync(app, schemaId.ToString(), user, contentId));
+            await Assert.ThrowsAsync<DomainObjectNotFoundException>(async () => await sut.FindContentAsync(context.WithSchemaId(schemaId), contentId));
         }
 
         public static IEnumerable<object[]> ManyRequestData = new[]
@@ -189,7 +192,7 @@ namespace Squidex.Domain.Apps.Entities.Contents
             A.CallTo(() => contentRepository.QueryAsync(app, schema, A<Status[]>.That.IsSameSequenceAs(status), A<ODataUriParser>.Ignored))
                 .Returns(ResultList.Create(Enumerable.Repeat(content, count), total));
 
-            var result = await sut.QueryAsync(app, schemaId.ToString(), user, archive, string.Empty);
+            var result = await sut.QueryAsync(context.WithSchemaId(schemaId).WithArchived(archive), string.Empty);
 
             Assert.Equal(contentData, result[0].Data);
             Assert.Equal(content.Id, result[0].Id);
@@ -217,7 +220,7 @@ namespace Squidex.Domain.Apps.Entities.Contents
             A.CallTo(() => modelBuilder.BuildEdmModel(schema, app))
                 .Throws(new ODataException());
 
-            return Assert.ThrowsAsync<ValidationException>(() => sut.QueryAsync(app, schemaId.ToString(), user, false, "query"));
+            return Assert.ThrowsAsync<ValidationException>(() => sut.QueryAsync(context.WithSchemaId(schemaId), "query"));
         }
 
         public static IEnumerable<object[]> ManyIdRequestData = new[]
@@ -243,7 +246,7 @@ namespace Squidex.Domain.Apps.Entities.Contents
             A.CallTo(() => contentRepository.QueryAsync(app, schema, A<Status[]>.That.IsSameSequenceAs(status), ids))
                 .Returns(ResultList.Create(Enumerable.Repeat(content, count), total));
 
-            var result = await sut.QueryAsync(app, schemaId.ToString(), user, archive, ids);
+            var result = await sut.QueryAsync(context.WithSchemaId(schemaId).WithArchived(archive), ids);
 
             Assert.Equal(contentData, result[0].Data);
             Assert.Equal(content.Id, result[0].Id);

tests/Squidex.Domain.Apps.Entities.Tests/Contents/GraphQL/GraphQLMutationTests.cs

@@ -69,7 +69,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
                 new JObject(
                     new JProperty("data", inputContent));
 
-            var result = await sut.QueryAsync(app, user, new GraphQLQuery { Query = query, Variables = variables });
+            var result = await sut.QueryAsync(context, new GraphQLQuery { Query = query, Variables = variables });
 
             var expected = new
             {
@@ -158,7 +158,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
                 new JObject(
                     new JProperty("data", inputContent));
 
-            var result = await sut.QueryAsync(app, user, new GraphQLQuery { Query = query, Variables = variables });
+            var result = await sut.QueryAsync(context, new GraphQLQuery { Query = query, Variables = variables });
 
             var expected = new
             {
@@ -247,7 +247,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
                 new JObject(
                     new JProperty("data", inputContent));
 
-            var result = await sut.QueryAsync(app, user, new GraphQLQuery { Query = query, Variables = variables });
+            var result = await sut.QueryAsync(context, new GraphQLQuery { Query = query, Variables = variables });
 
             var expected = new
             {
@@ -310,7 +310,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
 
             commandContext.Complete(new EntitySavedResult(13));
 
-            var result = await sut.QueryAsync(app, user, new GraphQLQuery { Query = query });
+            var result = await sut.QueryAsync(context, new GraphQLQuery { Query = query });
 
             var expected = new
             {
@@ -345,7 +345,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
 
             commandContext.Complete(new EntitySavedResult(13));
 
-            var result = await sut.QueryAsync(app, user, new GraphQLQuery { Query = query });
+            var result = await sut.QueryAsync(context, new GraphQLQuery { Query = query });
 
             var expected = new
             {
@@ -380,7 +380,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
 
             commandContext.Complete(new EntitySavedResult(13));
 
-            var result = await sut.QueryAsync(app, user, new GraphQLQuery { Query = query });
+            var result = await sut.QueryAsync(context, new GraphQLQuery { Query = query });
 
             var expected = new
             {
@@ -415,7 +415,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
 
             commandContext.Complete(new EntitySavedResult(13));
 
-            var result = await sut.QueryAsync(app, user, new GraphQLQuery { Query = query });
+            var result = await sut.QueryAsync(context, new GraphQLQuery { Query = query });
 
             var expected = new
             {
@@ -450,7 +450,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
 
             commandContext.Complete(new EntitySavedResult(13));
 
-            var result = await sut.QueryAsync(app, user, new GraphQLQuery { Query = query });
+            var result = await sut.QueryAsync(context, new GraphQLQuery { Query = query });
 
             var expected = new
             {

tests/Squidex.Domain.Apps.Entities.Tests/Contents/GraphQL/GraphQLQueriesTests.cs

@@ -24,7 +24,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
         [InlineData(" ")]
         public async Task Should_return_empty_object_for_empty_query(string query)
         {
-            var result = await sut.QueryAsync(app, user, new GraphQLQuery { Query = query });
+            var result = await sut.QueryAsync(context, new GraphQLQuery { Query = query });
 
             var expected = new
             {
@@ -68,7 +68,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
             A.CallTo(() => assetRepository.QueryAsync(app.Id, "?$take=30&$skip=5&$search=my-query"))
                 .Returns(ResultList.Create(assets, 0));
 
-            var result = await sut.QueryAsync(app, user, new GraphQLQuery { Query = query });
+            var result = await sut.QueryAsync(context, new GraphQLQuery { Query = query });
 
             var expected = new
             {
@@ -137,7 +137,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
             A.CallTo(() => assetRepository.QueryAsync(app.Id, "?$take=30&$skip=5&$search=my-query"))
                 .Returns(ResultList.Create(assets, 10));
 
-            var result = await sut.QueryAsync(app, user, new GraphQLQuery { Query = query });
+            var result = await sut.QueryAsync(context, new GraphQLQuery { Query = query });
 
             var expected = new
             {
@@ -206,7 +206,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
             A.CallTo(() => assetRepository.FindAssetAsync(assetId))
                 .Returns(asset);
 
-            var result = await sut.QueryAsync(app, user, new GraphQLQuery { Query = query });
+            var result = await sut.QueryAsync(context, new GraphQLQuery { Query = query });
 
             var expected = new
             {
@@ -281,10 +281,10 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
 
             var contents = new List<IContentEntity> { content };
 
-            A.CallTo(() => contentQuery.QueryAsync(app, schema.Id.ToString(), user, false, "?$top=30&$skip=5"))
+            A.CallTo(() => contentQuery.QueryAsync(ContextMatch(), "?$top=30&$skip=5"))
                 .Returns(ResultList.Create(contents, 0));
 
-            var result = await sut.QueryAsync(app, user, new GraphQLQuery { Query = query });
+            var result = await sut.QueryAsync(context, new GraphQLQuery { Query = query });
 
             var expected = new
             {
@@ -399,10 +399,10 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
 
             var contents = new List<IContentEntity> { content };
 
-            A.CallTo(() => contentQuery.QueryAsync(app, schema.Id.ToString(), user, false, "?$top=30&$skip=5"))
+            A.CallTo(() => contentQuery.QueryAsync(ContextMatch(), "?$top=30&$skip=5"))
                 .Returns(ResultList.Create(contents, 10));
 
-            var result = await sut.QueryAsync(app, user, new GraphQLQuery { Query = query });
+            var result = await sut.QueryAsync(context, new GraphQLQuery { Query = query });
 
             var expected = new
             {
@@ -517,10 +517,10 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
                   }}
                 }}";
 
-            A.CallTo(() => contentQuery.FindContentAsync(app, schema.Id.ToString(), user, contentId, EtagVersion.Any))
+            A.CallTo(() => contentQuery.FindContentAsync(ContextMatch(), contentId, EtagVersion.Any))
                 .Returns(content);
 
-            var result = await sut.QueryAsync(app, user, new GraphQLQuery { Query = query });
+            var result = await sut.QueryAsync(context, new GraphQLQuery { Query = query });
 
             var expected = new
             {
@@ -610,13 +610,13 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
 
             var refContents = new List<IContentEntity> { contentRef };
 
-            A.CallTo(() => contentQuery.FindContentAsync(app, schema.Id.ToString(), user, contentId, EtagVersion.Any))
+            A.CallTo(() => contentQuery.FindContentAsync(ContextMatch(), contentId, EtagVersion.Any))
                 .Returns(content);
 
-            A.CallTo(() => contentQuery.QueryAsync(app, schema.Id.ToString(), user, false, A<HashSet<Guid>>.That.Matches(x => x.Contains(contentRefId))))
+            A.CallTo(() => contentQuery.QueryAsync(ContextMatch(), A<HashSet<Guid>>.That.Matches(x => x.Contains(contentRefId))))
                 .Returns(ResultList.Create(refContents, 0));
 
-            var result = await sut.QueryAsync(app, user, new GraphQLQuery { Query = query });
+            var result = await sut.QueryAsync(context, new GraphQLQuery { Query = query });
 
             var expected = new
             {
@@ -670,13 +670,13 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
 
             var refAssets = new List<IAssetEntity> { assetRef };
 
-            A.CallTo(() => contentQuery.FindContentAsync(app, schema.Id.ToString(), user, contentId, EtagVersion.Any))
+            A.CallTo(() => contentQuery.FindContentAsync(ContextMatch(), contentId, EtagVersion.Any))
                 .Returns(content);
 
             A.CallTo(() => assetRepository.QueryAsync(app.Id, A<HashSet<Guid>>.That.Matches(x => x.Contains(assetRefId))))
                 .Returns(ResultList.Create(refAssets, 0));
 
-            var result = await sut.QueryAsync(app, user, new GraphQLQuery { Query = query });
+            var result = await sut.QueryAsync(context, new GraphQLQuery { Query = query });
 
             var expected = new
             {
@@ -729,10 +729,10 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
                   }}
                 }}";
 
-            A.CallTo(() => contentQuery.FindContentAsync(app, schema.Id.ToString(), user, contentId, EtagVersion.Any))
+            A.CallTo(() => contentQuery.FindContentAsync(ContextMatch(), contentId, EtagVersion.Any))
                 .Returns(content);
 
-            var result = await sut.QueryAsync(app, user, new GraphQLQuery { Query = query });
+            var result = await sut.QueryAsync(context, new GraphQLQuery { Query = query });
 
             var expected = new
             {
@@ -741,5 +741,10 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
 
             AssertResult(expected, result, false);
         }
+
+        private QueryContext ContextMatch()
+        {
+            return A<QueryContext>.That.Matches(x => x.App == app && x.SchemaIdOrName == schema.Id.ToString() && x.User == user && !x.Archived);
+        }
     }
 }

tests/Squidex.Domain.Apps.Entities.Tests/Contents/GraphQL/GraphQLTestBase.cs

@@ -45,6 +45,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
         protected readonly IMemoryCache cache = new MemoryCache(Options.Create(new MemoryCacheOptions()));
         protected readonly IAppProvider appProvider = A.Fake<IAppProvider>();
         protected readonly IAppEntity app = A.Dummy<IAppEntity>();
+        protected readonly QueryContext context;
         protected readonly ClaimsPrincipal user = new ClaimsPrincipal();
         protected readonly IGraphQLService sut;
 
@@ -77,6 +78,8 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
             A.CallTo(() => app.Name).Returns(appName);
             A.CallTo(() => app.LanguagesConfig).Returns(LanguagesConfig.Build(Language.DE));
 
+            context = QueryContext.Create(app, user);
+
             A.CallTo(() => schema.Id).Returns(schemaId);
             A.CallTo(() => schema.Name).Returns(schemaDef.Name);
             A.CallTo(() => schema.SchemaDef).Returns(schemaDef);