Minor performance improvements.

src/Squidex.Domain.Apps.Core.Model/Apps/LanguageConfig.cs

@@ -5,6 +5,7 @@
 //  All rights reserved. Licensed under the MIT license.
 // ==========================================================================
 
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using Squidex.Infrastructure;
@@ -13,7 +14,7 @@ namespace Squidex.Domain.Apps.Core.Apps
 {
     public sealed class LanguageConfig : IFieldPartitionItem
     {
-        private static readonly Language[] DefaultFallback = new Language[0];
+        private static readonly Language[] DefaultFallback = Array.Empty<Language>();
         private readonly Language language;
         private readonly Language[] languageFallbacks;
 

src/Squidex.Domain.Apps.Core.Model/Schemas/ArrayField.cs

@@ -5,6 +5,7 @@
 //  All rights reserved. Licensed under the MIT license.
 // ==========================================================================
 
+using Squidex.Infrastructure;
 using System;
 using System.Collections.Generic;
 using System.Diagnostics.Contracts;
@@ -30,11 +31,19 @@ namespace Squidex.Domain.Apps.Core.Schemas
             get { return fields.ByName; }
         }
 
-        public ArrayField(long id, string name, Partitioning partitioning, ArrayFieldProperties properties)
+        public ArrayField(long id, string name, Partitioning partitioning, ArrayFieldProperties properties = null, IFieldSettings settings = null)
             : base(id, name, partitioning, properties)
         {
         }
 
+        public ArrayField(long id, string name, Partitioning partitioning, NestedField[] fields, ArrayFieldProperties properties = null, IFieldSettings settings = null)
+            : this(id, name, partitioning, properties)
+        {
+            Guard.NotNull(fields, nameof(fields));
+
+            this.fields = new FieldCollection<NestedField>(fields);
+        }
+
         [Pure]
         public ArrayField DeleteField(long fieldId)
         {

src/Squidex.Domain.Apps.Core.Model/Schemas/ArrayFieldProperties.cs

@@ -27,12 +27,12 @@ namespace Squidex.Domain.Apps.Core.Schemas
             return visitor.Visit((IArrayField)field);
         }
 
-        public override RootField CreateRootField(long id, string name, Partitioning partitioning)
+        public override RootField CreateRootField(long id, string name, Partitioning partitioning, IFieldSettings settings = null)
         {
-            return Fields.Array(id, name, partitioning, this);
+            return Fields.Array(id, name, partitioning, this, settings);
         }
 
-        public override NestedField CreateNestedField(long id, string name)
+        public override NestedField CreateNestedField(long id, string name, IFieldSettings settings = null)
         {
             throw new NotSupportedException();
         }

src/Squidex.Domain.Apps.Core.Model/Schemas/AssetsFieldProperties.cs

@@ -47,14 +47,14 @@ namespace Squidex.Domain.Apps.Core.Schemas
             return visitor.Visit((IField<AssetsFieldProperties>)field);
         }
 
-        public override RootField CreateRootField(long id, string name, Partitioning partitioning)
+        public override RootField CreateRootField(long id, string name, Partitioning partitioning, IFieldSettings settings = null)
         {
-            return Fields.Assets(id, name, partitioning, this);
+            return Fields.Assets(id, name, partitioning, this, settings);
         }
 
-        public override NestedField CreateNestedField(long id, string name)
+        public override NestedField CreateNestedField(long id, string name, IFieldSettings settings = null)
         {
-            return Fields.Assets(id, name, this);
+            return Fields.Assets(id, name, this, settings);
         }
     }
 }

src/Squidex.Domain.Apps.Core.Model/Schemas/BooleanFieldProperties.cs

@@ -28,14 +28,14 @@ namespace Squidex.Domain.Apps.Core.Schemas
             return visitor.Visit((IField<BooleanFieldProperties>)field);
         }
 
-        public override RootField CreateRootField(long id, string name, Partitioning partitioning)
+        public override RootField CreateRootField(long id, string name, Partitioning partitioning, IFieldSettings settings = null)
         {
-            return Fields.Boolean(id, name, partitioning, this);
+            return Fields.Boolean(id, name, partitioning, this, settings);
         }
 
-        public override NestedField CreateNestedField(long id, string name)
+        public override NestedField CreateNestedField(long id, string name, IFieldSettings settings = null)
         {
-            return Fields.Boolean(id, name, this);
+            return Fields.Boolean(id, name, this, settings);
         }
     }
 }

src/Squidex.Domain.Apps.Core.Model/Schemas/DateTimeFieldProperties.cs

@@ -33,14 +33,14 @@ namespace Squidex.Domain.Apps.Core.Schemas
             return visitor.Visit((IField<DateTimeFieldProperties>)field);
         }
 
-        public override RootField CreateRootField(long id, string name, Partitioning partitioning)
+        public override RootField CreateRootField(long id, string name, Partitioning partitioning, IFieldSettings settings = null)
         {
-            return Fields.DateTime(id, name, partitioning, this);
+            return Fields.DateTime(id, name, partitioning, this, settings);
         }
 
-        public override NestedField CreateNestedField(long id, string name)
+        public override NestedField CreateNestedField(long id, string name, IFieldSettings settings = null)
         {
-            return Fields.DateTime(id, name, this);
+            return Fields.DateTime(id, name, this, settings);
         }
     }
 }

src/Squidex.Domain.Apps.Core.Model/Schemas/FieldProperties.cs

@@ -21,8 +21,8 @@ namespace Squidex.Domain.Apps.Core.Schemas
 
         public abstract T Accept<T>(IFieldVisitor<T> visitor, IField field);
 
-        public abstract RootField CreateRootField(long id, string name, Partitioning partitioning);
+        public abstract RootField CreateRootField(long id, string name, Partitioning partitioning, IFieldSettings settings = null);
 
-        public abstract NestedField CreateNestedField(long id, string name);
+        public abstract NestedField CreateNestedField(long id, string name, IFieldSettings settings = null);
     }
 }

src/Squidex.Domain.Apps.Core.Model/Schemas/FieldRegistry.cs

@@ -42,18 +42,18 @@ namespace Squidex.Domain.Apps.Core.Schemas
             }
         }
 
-        public RootField CreateRootField(long id, string name, Partitioning partitioning, FieldProperties properties)
+        public RootField CreateRootField(long id, string name, Partitioning partitioning, FieldProperties properties, IFieldSettings settings = null)
         {
             CheckProperties(properties);
 
-            return properties.CreateRootField(id, name, partitioning);
+            return properties.CreateRootField(id, name, partitioning, settings);
         }
 
-        public NestedField CreateNestedField(long id, string name, FieldProperties properties)
+        public NestedField CreateNestedField(long id, string name, FieldProperties properties, IFieldSettings settings = null)
         {
             CheckProperties(properties);
 
-            return properties.CreateNestedField(id, name);
+            return properties.CreateNestedField(id, name, settings);
         }
 
         private void CheckProperties(FieldProperties properties)

src/Squidex.Domain.Apps.Core.Model/Schemas/Fields.cs

@@ -13,117 +13,107 @@ namespace Squidex.Domain.Apps.Core.Schemas
     {
         public static RootField<ArrayFieldProperties> Array(long id, string name, Partitioning partitioning, params NestedField[] fields)
         {
-            var result = new ArrayField(id, name, partitioning, new ArrayFieldProperties());
-
-            if (fields != null)
-            {
-                foreach (var field in fields)
-                {
-                    result = result.AddField(field);
-                }
-            }
-
-            return result;
+            return new ArrayField(id, name, partitioning, fields: fields);
         }
 
-        public static ArrayField Array(long id, string name, Partitioning partitioning, ArrayFieldProperties properties = null)
+        public static ArrayField Array(long id, string name, Partitioning partitioning, ArrayFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return new ArrayField(id, name, partitioning, properties ?? new ArrayFieldProperties());
+            return new ArrayField(id, name, partitioning, properties, settings);
         }
 
-        public static RootField<AssetsFieldProperties> Assets(long id, string name, Partitioning partitioning, AssetsFieldProperties properties = null)
+        public static RootField<AssetsFieldProperties> Assets(long id, string name, Partitioning partitioning, AssetsFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return new RootField<AssetsFieldProperties>(id, name, partitioning, properties ?? new AssetsFieldProperties());
+            return new RootField<AssetsFieldProperties>(id, name, partitioning, properties, settings);
         }
 
-        public static RootField<BooleanFieldProperties> Boolean(long id, string name, Partitioning partitioning, BooleanFieldProperties properties = null)
+        public static RootField<BooleanFieldProperties> Boolean(long id, string name, Partitioning partitioning, BooleanFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return new RootField<BooleanFieldProperties>(id, name, partitioning, properties ?? new BooleanFieldProperties());
+            return new RootField<BooleanFieldProperties>(id, name, partitioning, properties, settings);
         }
 
-        public static RootField<DateTimeFieldProperties> DateTime(long id, string name, Partitioning partitioning, DateTimeFieldProperties properties = null)
+        public static RootField<DateTimeFieldProperties> DateTime(long id, string name, Partitioning partitioning, DateTimeFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return new RootField<DateTimeFieldProperties>(id, name, partitioning, properties ?? new DateTimeFieldProperties());
+            return new RootField<DateTimeFieldProperties>(id, name, partitioning, properties, settings);
         }
 
-        public static RootField<GeolocationFieldProperties> Geolocation(long id, string name, Partitioning partitioning, GeolocationFieldProperties properties = null)
+        public static RootField<GeolocationFieldProperties> Geolocation(long id, string name, Partitioning partitioning, GeolocationFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return new RootField<GeolocationFieldProperties>(id, name, partitioning, properties ?? new GeolocationFieldProperties());
+            return new RootField<GeolocationFieldProperties>(id, name, partitioning, properties, settings);
         }
 
-        public static RootField<JsonFieldProperties> Json(long id, string name, Partitioning partitioning, JsonFieldProperties properties = null)
+        public static RootField<JsonFieldProperties> Json(long id, string name, Partitioning partitioning, JsonFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return new RootField<JsonFieldProperties>(id, name, partitioning, properties ?? new JsonFieldProperties());
+            return new RootField<JsonFieldProperties>(id, name, partitioning, properties, settings);
         }
 
-        public static RootField<NumberFieldProperties> Number(long id, string name, Partitioning partitioning, NumberFieldProperties properties = null)
+        public static RootField<NumberFieldProperties> Number(long id, string name, Partitioning partitioning, NumberFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return new RootField<NumberFieldProperties>(id, name, partitioning, properties ?? new NumberFieldProperties());
+            return new RootField<NumberFieldProperties>(id, name, partitioning, properties, settings);
         }
 
-        public static RootField<ReferencesFieldProperties> References(long id, string name, Partitioning partitioning, ReferencesFieldProperties properties = null)
+        public static RootField<ReferencesFieldProperties> References(long id, string name, Partitioning partitioning, ReferencesFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return new RootField<ReferencesFieldProperties>(id, name, partitioning, properties ?? new ReferencesFieldProperties());
+            return new RootField<ReferencesFieldProperties>(id, name, partitioning, properties, settings);
         }
 
-        public static RootField<StringFieldProperties> String(long id, string name, Partitioning partitioning, StringFieldProperties properties = null)
+        public static RootField<StringFieldProperties> String(long id, string name, Partitioning partitioning, StringFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return new RootField<StringFieldProperties>(id, name, partitioning, properties ?? new StringFieldProperties());
+            return new RootField<StringFieldProperties>(id, name, partitioning, properties, settings);
         }
 
-        public static RootField<TagsFieldProperties> Tags(long id, string name, Partitioning partitioning, TagsFieldProperties properties = null)
+        public static RootField<TagsFieldProperties> Tags(long id, string name, Partitioning partitioning, TagsFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return new RootField<TagsFieldProperties>(id, name, partitioning, properties ?? new TagsFieldProperties());
+            return new RootField<TagsFieldProperties>(id, name, partitioning, properties, settings);
         }
 
-        public static NestedField<AssetsFieldProperties> Assets(long id, string name, AssetsFieldProperties properties = null)
+        public static NestedField<AssetsFieldProperties> Assets(long id, string name, AssetsFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return new NestedField<AssetsFieldProperties>(id, name, properties ?? new AssetsFieldProperties());
+            return new NestedField<AssetsFieldProperties>(id, name, properties, settings);
         }
 
-        public static NestedField<BooleanFieldProperties> Boolean(long id, string name, BooleanFieldProperties properties = null)
+        public static NestedField<BooleanFieldProperties> Boolean(long id, string name, BooleanFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return new NestedField<BooleanFieldProperties>(id, name, properties ?? new BooleanFieldProperties());
+            return new NestedField<BooleanFieldProperties>(id, name, properties, settings);
         }
 
-        public static NestedField<DateTimeFieldProperties> DateTime(long id, string name, DateTimeFieldProperties properties = null)
+        public static NestedField<DateTimeFieldProperties> DateTime(long id, string name, DateTimeFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return new NestedField<DateTimeFieldProperties>(id, name, properties ?? new DateTimeFieldProperties());
+            return new NestedField<DateTimeFieldProperties>(id, name, properties, settings);
         }
 
-        public static NestedField<GeolocationFieldProperties> Geolocation(long id, string name, GeolocationFieldProperties properties = null)
+        public static NestedField<GeolocationFieldProperties> Geolocation(long id, string name, GeolocationFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return new NestedField<GeolocationFieldProperties>(id, name, properties ?? new GeolocationFieldProperties());
+            return new NestedField<GeolocationFieldProperties>(id, name, properties, settings);
         }
 
-        public static NestedField<JsonFieldProperties> Json(long id, string name, JsonFieldProperties properties = null)
+        public static NestedField<JsonFieldProperties> Json(long id, string name, JsonFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return new NestedField<JsonFieldProperties>(id, name, properties ?? new JsonFieldProperties());
+            return new NestedField<JsonFieldProperties>(id, name, properties, settings);
         }
 
-        public static NestedField<NumberFieldProperties> Number(long id, string name, NumberFieldProperties properties = null)
+        public static NestedField<NumberFieldProperties> Number(long id, string name, NumberFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return new NestedField<NumberFieldProperties>(id, name, properties ?? new NumberFieldProperties());
+            return new NestedField<NumberFieldProperties>(id, name, properties, settings);
         }
 
-        public static NestedField<ReferencesFieldProperties> References(long id, string name, ReferencesFieldProperties properties = null)
+        public static NestedField<ReferencesFieldProperties> References(long id, string name, ReferencesFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return new NestedField<ReferencesFieldProperties>(id, name, properties ?? new ReferencesFieldProperties());
+            return new NestedField<ReferencesFieldProperties>(id, name, properties, settings);
         }
 
-        public static NestedField<StringFieldProperties> String(long id, string name, StringFieldProperties properties = null)
+        public static NestedField<StringFieldProperties> String(long id, string name, StringFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return new NestedField<StringFieldProperties>(id, name, properties ?? new StringFieldProperties());
+            return new NestedField<StringFieldProperties>(id, name, properties, settings);
         }
 
-        public static NestedField<TagsFieldProperties> Tags(long id, string name, TagsFieldProperties properties = null)
+        public static NestedField<TagsFieldProperties> Tags(long id, string name, TagsFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return new NestedField<TagsFieldProperties>(id, name, properties ?? new TagsFieldProperties());
+            return new NestedField<TagsFieldProperties>(id, name, properties, settings);
         }
 
-        public static Schema AddArray(this Schema schema, long id, string name, Partitioning partitioning, Func<ArrayField, ArrayField> handler, ArrayFieldProperties properties = null)
+        public static Schema AddArray(this Schema schema, long id, string name, Partitioning partitioning, Func<ArrayField, ArrayField> handler, ArrayFieldProperties properties = null, IFieldSettings settings = null)
         {
-            var field = Array(id, name, partitioning, properties);
+            var field = Array(id, name, partitioning, properties, settings);
 
             if (handler != null)
             {
@@ -133,94 +123,94 @@ namespace Squidex.Domain.Apps.Core.Schemas
             return schema.AddField(field);
         }
 
-        public static Schema AddAssets(this Schema schema, long id, string name, Partitioning partitioning, AssetsFieldProperties properties = null)
+        public static Schema AddAssets(this Schema schema, long id, string name, Partitioning partitioning, AssetsFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return schema.AddField(Assets(id, name, partitioning, properties));
+            return schema.AddField(Assets(id, name, partitioning, properties, settings));
         }
 
-        public static Schema AddBoolean(this Schema schema, long id, string name, Partitioning partitioning, BooleanFieldProperties properties = null)
+        public static Schema AddBoolean(this Schema schema, long id, string name, Partitioning partitioning, BooleanFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return schema.AddField(Boolean(id, name, partitioning, properties));
+            return schema.AddField(Boolean(id, name, partitioning, properties, settings));
         }
 
-        public static Schema AddDateTime(this Schema schema, long id, string name, Partitioning partitioning, DateTimeFieldProperties properties = null)
+        public static Schema AddDateTime(this Schema schema, long id, string name, Partitioning partitioning, DateTimeFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return schema.AddField(DateTime(id, name, partitioning, properties));
+            return schema.AddField(DateTime(id, name, partitioning, properties, settings));
         }
 
-        public static Schema AddGeolocation(this Schema schema, long id, string name, Partitioning partitioning, GeolocationFieldProperties properties = null)
+        public static Schema AddGeolocation(this Schema schema, long id, string name, Partitioning partitioning, GeolocationFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return schema.AddField(Geolocation(id, name, partitioning, properties));
+            return schema.AddField(Geolocation(id, name, partitioning, properties, settings));
         }
 
-        public static Schema AddJson(this Schema schema, long id, string name, Partitioning partitioning, JsonFieldProperties properties = null)
+        public static Schema AddJson(this Schema schema, long id, string name, Partitioning partitioning, JsonFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return schema.AddField(Json(id, name, partitioning, properties));
+            return schema.AddField(Json(id, name, partitioning, properties, settings));
         }
 
-        public static Schema AddNumber(this Schema schema, long id, string name, Partitioning partitioning, NumberFieldProperties properties = null)
+        public static Schema AddNumber(this Schema schema, long id, string name, Partitioning partitioning, NumberFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return schema.AddField(Number(id, name, partitioning, properties));
+            return schema.AddField(Number(id, name, partitioning, properties, settings));
         }
 
-        public static Schema AddReferences(this Schema schema, long id, string name, Partitioning partitioning, ReferencesFieldProperties properties = null)
+        public static Schema AddReferences(this Schema schema, long id, string name, Partitioning partitioning, ReferencesFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return schema.AddField(References(id, name, partitioning, properties));
+            return schema.AddField(References(id, name, partitioning, properties, settings));
         }
 
-        public static Schema AddString(this Schema schema, long id, string name, Partitioning partitioning, StringFieldProperties properties = null)
+        public static Schema AddString(this Schema schema, long id, string name, Partitioning partitioning, StringFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return schema.AddField(String(id, name, partitioning, properties));
+            return schema.AddField(String(id, name, partitioning, properties, settings));
         }
 
-        public static Schema AddTags(this Schema schema, long id, string name, Partitioning partitioning, TagsFieldProperties properties = null)
+        public static Schema AddTags(this Schema schema, long id, string name, Partitioning partitioning, TagsFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return schema.AddField(Tags(id, name, partitioning, properties));
+            return schema.AddField(Tags(id, name, partitioning, properties, settings));
         }
 
-        public static ArrayField AddAssets(this ArrayField field, long id, string name, AssetsFieldProperties properties = null)
+        public static ArrayField AddAssets(this ArrayField field, long id, string name, AssetsFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return field.AddField(Assets(id, name, properties));
+            return field.AddField(Assets(id, name, properties, settings));
         }
 
-        public static ArrayField AddBoolean(this ArrayField field, long id, string name, BooleanFieldProperties properties = null)
+        public static ArrayField AddBoolean(this ArrayField field, long id, string name, BooleanFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return field.AddField(Boolean(id, name, properties));
+            return field.AddField(Boolean(id, name, properties, settings));
         }
 
-        public static ArrayField AddDateTime(this ArrayField field, long id, string name, DateTimeFieldProperties properties = null)
+        public static ArrayField AddDateTime(this ArrayField field, long id, string name, DateTimeFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return field.AddField(DateTime(id, name, properties));
+            return field.AddField(DateTime(id, name, properties, settings));
         }
 
-        public static ArrayField AddGeolocation(this ArrayField field, long id, string name, GeolocationFieldProperties properties = null)
+        public static ArrayField AddGeolocation(this ArrayField field, long id, string name, GeolocationFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return field.AddField(Geolocation(id, name, properties));
+            return field.AddField(Geolocation(id, name, properties, settings));
         }
 
-        public static ArrayField AddJson(this ArrayField field, long id, string name, JsonFieldProperties properties = null)
+        public static ArrayField AddJson(this ArrayField field, long id, string name, JsonFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return field.AddField(Json(id, name, properties));
+            return field.AddField(Json(id, name, properties, settings));
         }
 
-        public static ArrayField AddNumber(this ArrayField field, long id, string name, NumberFieldProperties properties = null)
+        public static ArrayField AddNumber(this ArrayField field, long id, string name, NumberFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return field.AddField(Number(id, name, properties));
+            return field.AddField(Number(id, name, properties, settings));
         }
 
-        public static ArrayField AddReferences(this ArrayField field, long id, string name, ReferencesFieldProperties properties = null)
+        public static ArrayField AddReferences(this ArrayField field, long id, string name, ReferencesFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return field.AddField(References(id, name, properties));
+            return field.AddField(References(id, name, properties, settings));
         }
 
-        public static ArrayField AddString(this ArrayField field, long id, string name, StringFieldProperties properties = null)
+        public static ArrayField AddString(this ArrayField field, long id, string name, StringFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return field.AddField(String(id, name, properties));
+            return field.AddField(String(id, name, properties, settings));
         }
 
-        public static ArrayField AddTags(this ArrayField field, long id, string name, TagsFieldProperties properties = null)
+        public static ArrayField AddTags(this ArrayField field, long id, string name, TagsFieldProperties properties = null, IFieldSettings settings = null)
         {
-            return field.AddField(Tags(id, name, properties));
+            return field.AddField(Tags(id, name, properties, settings));
         }
     }
 }

src/Squidex.Domain.Apps.Core.Model/Schemas/GeolocationFieldProperties.cs

@@ -24,14 +24,14 @@ namespace Squidex.Domain.Apps.Core.Schemas
             return visitor.Visit((IField<GeolocationFieldProperties>)field);
         }
 
-        public override RootField CreateRootField(long id, string name, Partitioning partitioning)
+        public override RootField CreateRootField(long id, string name, Partitioning partitioning, IFieldSettings settings = null)
         {
-            return Fields.Geolocation(id, name, partitioning, this);
+            return Fields.Geolocation(id, name, partitioning, this, settings);
         }
 
-        public override NestedField CreateNestedField(long id, string name)
+        public override NestedField CreateNestedField(long id, string name, IFieldSettings settings = null)
         {
-            return Fields.Geolocation(id, name, this);
+            return Fields.Geolocation(id, name, this, settings);
         }
     }
 }

src/Squidex.Domain.Apps.Core.Model/Schemas/IField.cs

@@ -7,18 +7,12 @@
 
 namespace Squidex.Domain.Apps.Core.Schemas
 {
-    public interface IField
+    public interface IField : IFieldSettings
     {
         long Id { get; }
 
         string Name { get; }
 
-        bool IsLocked { get; }
-
-        bool IsDisabled { get; }
-
-        bool IsHidden { get; }
-
         FieldProperties RawProperties { get; }
 
         T Accept<T>(IFieldVisitor<T> visitor);

src/Squidex.Domain.Apps.Core.Model/Schemas/IFieldSettings.cs

@@ -0,0 +1,18 @@
+// ==========================================================================
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex UG (haftungsbeschränkt)
+//  All rights reserved. Licensed under the MIT license.
+// ==========================================================================
+
+namespace Squidex.Domain.Apps.Core.Schemas
+{
+    public interface IFieldSettings
+    {
+        bool IsLocked { get; }
+
+        bool IsDisabled { get; }
+
+        bool IsHidden { get; }
+    }
+}

src/Squidex.Domain.Apps.Core.Model/Schemas/Json/JsonFieldModel.cs

@@ -5,12 +5,11 @@
 //  All rights reserved. Licensed under the MIT license.
 // ==========================================================================
 
-using System.Collections.Generic;
 using Newtonsoft.Json;
 
 namespace Squidex.Domain.Apps.Core.Schemas.Json
 {
-    public sealed class JsonFieldModel
+    public sealed class JsonFieldModel : IFieldSettings
     {
         [JsonProperty]
         public long Id { get; set; }
@@ -34,6 +33,6 @@ namespace Squidex.Domain.Apps.Core.Schemas.Json
         public FieldProperties Properties { get; set; }
 
         [JsonProperty]
-        public List<JsonNestedFieldModel> Children { get; set; }
+        public JsonNestedFieldModel[] Children { get; set; }
     }
 }

src/Squidex.Domain.Apps.Core.Model/Schemas/Json/JsonNestedFieldModel.cs

@@ -9,7 +9,7 @@ using Newtonsoft.Json;
 
 namespace Squidex.Domain.Apps.Core.Schemas.Json
 {
-    public sealed class JsonNestedFieldModel
+    public sealed class JsonNestedFieldModel : IFieldSettings
     {
         [JsonProperty]
         public long Id { get; set; }
@@ -25,5 +25,10 @@ namespace Squidex.Domain.Apps.Core.Schemas.Json
 
         [JsonProperty]
         public FieldProperties Properties { get; set; }
+
+        public bool IsLocked
+        {
+            get { return false; }
+        }
     }
 }

src/Squidex.Domain.Apps.Core.Model/Schemas/Json/JsonSchemaModel.cs

@@ -5,15 +5,16 @@
 //  All rights reserved. Licensed under the MIT license.
 // ==========================================================================
 
-using System.Collections.Generic;
+using System;
 using System.Linq;
 using Newtonsoft.Json;
+using Squidex.Infrastructure;
 
 namespace Squidex.Domain.Apps.Core.Schemas.Json
 {
     public sealed class JsonSchemaModel
     {
-        private static readonly RootField[] Empty = new RootField[0];
+        private static readonly RootField[] Empty = Array.Empty<RootField>();
 
         [JsonProperty]
         public string Name { get; set; }
@@ -25,7 +26,7 @@ namespace Squidex.Domain.Apps.Core.Schemas.Json
         public SchemaProperties Properties { get; set; }
 
         [JsonProperty]
-        public List<JsonFieldModel> Fields { get; set; }
+        public JsonFieldModel[] Fields { get; set; }
 
         public JsonSchemaModel()
         {
@@ -38,7 +39,7 @@ namespace Squidex.Domain.Apps.Core.Schemas.Json
             Properties = schema.Properties;
 
             Fields =
-                schema.Fields.Select(x =>
+                schema.Fields.ToArray(x =>
                     new JsonFieldModel
                     {
                         Id = x.Id,
@@ -49,16 +50,16 @@ namespace Squidex.Domain.Apps.Core.Schemas.Json
                         IsDisabled = x.IsDisabled,
                         Partitioning = x.Partitioning.Key,
                         Properties = x.RawProperties
-                    }).ToList();
+                    });
 
             IsPublished = schema.IsPublished;
         }
 
-        private static List<JsonNestedFieldModel> CreateChildren(IField field)
+        private static JsonNestedFieldModel[] CreateChildren(IField field)
         {
             if (field is ArrayField arrayField)
             {
-                return arrayField.Fields.Select(x =>
+                return arrayField.Fields.ToArray(x =>
                     new JsonNestedFieldModel
                     {
                         Id = x.Id,
@@ -66,7 +67,7 @@ namespace Squidex.Domain.Apps.Core.Schemas.Json
                         IsHidden = x.IsHidden,
                         IsDisabled = x.IsDisabled,
                         Properties = x.RawProperties
-                    }).ToList();
+                    });
             }
 
             return null;
@@ -78,55 +79,28 @@ namespace Squidex.Domain.Apps.Core.Schemas.Json
 
             if (Fields != null)
             {
-                fields = new RootField[Fields.Count];
-
-                for (var i = 0; i < fields.Length; i++)
+                fields = Fields.ToArray(fieldModel =>
                 {
-                    var fieldModel = Fields[i];
-
                     var parititonKey = new Partitioning(fieldModel.Partitioning);
 
-                    var field = registry.CreateRootField(fieldModel.Id, fieldModel.Name, parititonKey, fieldModel.Properties);
+                    RootField field;
 
-                    if (field is ArrayField arrayField && fieldModel.Children?.Count > 0)
+                    if (fieldModel.Properties is ArrayFieldProperties arrayProperties && fieldModel.Children?.Length > 0)
                     {
-                        foreach (var nestedFieldModel in fieldModel.Children)
+                        var nestedFields = fieldModel.Children.ToArray(nestedFieldModel =>
                         {
-                            var nestedField = registry.CreateNestedField(nestedFieldModel.Id, nestedFieldModel.Name, nestedFieldModel.Properties);
-
-                            if (nestedFieldModel.IsHidden)
-                            {
-                                nestedField = nestedField.Hide();
-                            }
-
-                            if (nestedFieldModel.IsDisabled)
-                            {
-                                nestedField = nestedField.Disable();
-                            }
-
-                            arrayField = arrayField.AddField(nestedField);
-                        }
-
-                        field = arrayField;
-                    }
-
-                    if (fieldModel.IsDisabled)
-                    {
-                        field = field.Disable();
-                    }
+                            return registry.CreateNestedField(nestedFieldModel.Id, nestedFieldModel.Name, nestedFieldModel.Properties, nestedFieldModel);
+                        });
 
-                    if (fieldModel.IsLocked)
-                    {
-                        field = field.Lock();
+                        field = new ArrayField(fieldModel.Id, fieldModel.Name, parititonKey, nestedFields, arrayProperties, fieldModel);
                     }
-
-                    if (fieldModel.IsHidden)
+                    else
                     {
-                        field = field.Hide();
+                        field = registry.CreateRootField(fieldModel.Id, fieldModel.Name, parititonKey, fieldModel.Properties, fieldModel);
                     }
 
-                    fields[i] = field;
-                }
+                    return field;
+                });
             }
 
             return new Schema(Name, fields, Properties, IsPublished);

src/Squidex.Domain.Apps.Core.Model/Schemas/JsonFieldProperties.cs

@@ -22,14 +22,14 @@ namespace Squidex.Domain.Apps.Core.Schemas
             return visitor.Visit((IField<JsonFieldProperties>)field);
         }
 
-        public override RootField CreateRootField(long id, string name, Partitioning partitioning)
+        public override RootField CreateRootField(long id, string name, Partitioning partitioning, IFieldSettings settings = null)
         {
-            return Fields.Json(id, name, partitioning, this);
+            return Fields.Json(id, name, partitioning, this, settings);
         }
 
-        public override NestedField CreateNestedField(long id, string name)
+        public override NestedField CreateNestedField(long id, string name, IFieldSettings settings = null)
         {
-            return Fields.Json(id, name, this);
+            return Fields.Json(id, name, this, settings);
         }
     }
 }

src/Squidex.Domain.Apps.Core.Model/Schemas/NestedField.cs

@@ -45,13 +45,20 @@ namespace Squidex.Domain.Apps.Core.Schemas
 
         public abstract FieldProperties RawProperties { get; }
 
-        protected NestedField(long id, string name)
+        protected NestedField(long id, string name, IFieldSettings settings = null)
         {
             Guard.NotNullOrEmpty(name, nameof(name));
             Guard.GreaterThan(id, 0, nameof(id));
 
             fieldId = id;
             fieldName = name;
+
+            if (settings != null)
+            {
+                isLocked = settings.IsLocked;
+                isHidden = settings.IsHidden;
+                isDisabled = settings.IsDisabled;
+            }
         }
 
         [Pure]

src/Squidex.Domain.Apps.Core.Model/Schemas/NestedField{T}.cs

@@ -25,12 +25,10 @@ namespace Squidex.Domain.Apps.Core.Schemas
             get { return properties; }
         }
 
-        public NestedField(long id, string name, T properties)
-            : base(id, name)
+        public NestedField(long id, string name, T properties = null, IFieldSettings settings = null)
+            : base(id, name, settings)
         {
-            Guard.NotNull(properties, nameof(properties));
-
-            SetProperties(properties);
+            SetProperties(properties ?? new T());
         }
 
         [Pure]

src/Squidex.Domain.Apps.Core.Model/Schemas/NumberFieldProperties.cs

@@ -35,14 +35,14 @@ namespace Squidex.Domain.Apps.Core.Schemas
             return visitor.Visit((IField<NumberFieldProperties>)field);
         }
 
-        public override RootField CreateRootField(long id, string name, Partitioning partitioning)
+        public override RootField CreateRootField(long id, string name, Partitioning partitioning, IFieldSettings settings = null)
         {
-            return Fields.Number(id, name, partitioning, this);
+            return Fields.Number(id, name, partitioning, this, settings);
         }
 
-        public override NestedField CreateNestedField(long id, string name)
+        public override NestedField CreateNestedField(long id, string name, IFieldSettings settings = null)
         {
-            return Fields.Number(id, name, this);
+            return Fields.Number(id, name, this, settings);
         }
     }
 }

src/Squidex.Domain.Apps.Core.Model/Schemas/ReferencesFieldProperties.cs

@@ -29,14 +29,14 @@ namespace Squidex.Domain.Apps.Core.Schemas
             return visitor.Visit((IField<ReferencesFieldProperties>)field);
         }
 
-        public override RootField CreateRootField(long id, string name, Partitioning partitioning)
+        public override RootField CreateRootField(long id, string name, Partitioning partitioning, IFieldSettings settings = null)
         {
-            return Fields.References(id, name, partitioning, this);
+            return Fields.References(id, name, partitioning, this, settings);
         }
 
-        public override NestedField CreateNestedField(long id, string name)
+        public override NestedField CreateNestedField(long id, string name, IFieldSettings settings = null)
         {
-            return Fields.References(id, name, this);
+            return Fields.References(id, name, this, settings);
         }
     }
 }

src/Squidex.Domain.Apps.Core.Model/Schemas/RootField.cs

@@ -51,7 +51,7 @@ namespace Squidex.Domain.Apps.Core.Schemas
 
         public abstract FieldProperties RawProperties { get; }
 
-        protected RootField(long id, string name, Partitioning partitioning)
+        protected RootField(long id, string name, Partitioning partitioning, IFieldSettings settings = null)
         {
             Guard.NotNullOrEmpty(name, nameof(name));
             Guard.GreaterThan(id, 0, nameof(id));
@@ -61,6 +61,13 @@ namespace Squidex.Domain.Apps.Core.Schemas
             fieldName = name;
 
             this.partitioning = partitioning;
+
+            if (settings != null)
+            {
+                isLocked = settings.IsLocked;
+                isHidden = settings.IsHidden;
+                isDisabled = settings.IsDisabled;
+            }
         }
 
         [Pure]

src/Squidex.Domain.Apps.Core.Model/Schemas/RootField{T}.cs

@@ -25,12 +25,10 @@ namespace Squidex.Domain.Apps.Core.Schemas
             get { return properties; }
         }
 
-        public RootField(long id, string name, Partitioning partitioning, T properties)
-            : base(id, name, partitioning)
+        public RootField(long id, string name, Partitioning partitioning, T properties = null, IFieldSettings settings = null)
+            : base(id, name, partitioning, settings)
         {
-            Guard.NotNull(properties, nameof(properties));
-
-            SetProperties(properties);
+            SetProperties(properties ?? new T());
         }
 
         [Pure]

src/Squidex.Domain.Apps.Core.Model/Schemas/StringFieldProperties.cs

@@ -39,14 +39,14 @@ namespace Squidex.Domain.Apps.Core.Schemas
             return visitor.Visit((IField<StringFieldProperties>)field);
         }
 
-        public override RootField CreateRootField(long id, string name, Partitioning partitioning)
+        public override RootField CreateRootField(long id, string name, Partitioning partitioning, IFieldSettings settings = null)
         {
-            return Fields.String(id, name, partitioning, this);
+            return Fields.String(id, name, partitioning, this, settings);
         }
 
-        public override NestedField CreateNestedField(long id, string name)
+        public override NestedField CreateNestedField(long id, string name, IFieldSettings settings = null)
         {
-            return Fields.String(id, name, this);
+            return Fields.String(id, name, this, settings);
         }
     }
 }

src/Squidex.Domain.Apps.Core.Model/Schemas/TagsFieldProperties.cs

@@ -33,14 +33,14 @@ namespace Squidex.Domain.Apps.Core.Schemas
             return visitor.Visit((IField<TagsFieldProperties>)field);
         }
 
-        public override RootField CreateRootField(long id, string name, Partitioning partitioning)
+        public override RootField CreateRootField(long id, string name, Partitioning partitioning, IFieldSettings settings = null)
         {
-            return Fields.Tags(id, name, partitioning, this);
+            return Fields.Tags(id, name, partitioning, this, settings);
         }
 
-        public override NestedField CreateNestedField(long id, string name)
+        public override NestedField CreateNestedField(long id, string name, IFieldSettings settings = null)
         {
-            return Fields.Tags(id, name, this);
+            return Fields.Tags(id, name, this, settings);
         }
     }
 }

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

@@ -53,7 +53,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
 
             var result = await Task.WhenAll(queries.Select(q => QueryInternalAsync(model, ctx, q)));
 
-            return (result.Any(x => x.HasError), result.Select(x => x.Response).ToArray());
+            return (result.Any(x => x.HasError), result.ToArray(x => x.Response));
         }
 
         public async Task<(bool HasError, object Response)> QueryAsync(QueryContext context, GraphQLQuery query)

src/Squidex.Infrastructure/CollectionExtensions.cs

@@ -62,6 +62,32 @@ namespace Squidex.Infrastructure
             return source.Concat(Enumerable.Repeat(value, 1));
         }
 
+        public static TResult[] ToArray<TResult, T>(this T[] value, Func<T, TResult> convert)
+        {
+            var result = new TResult[value.Length];
+
+            for (var i = 0; i < value.Length; i++)
+            {
+                result[i] = convert(value[i]);
+            }
+
+            return result;
+        }
+
+        public static TResult[] ToArray<TResult, T>(this IReadOnlyCollection<T> value, Func<T, TResult> convert)
+        {
+            var result = new TResult[value.Count];
+            var i = 0;
+
+            foreach (var v in value)
+            {
+                result[i] = convert(v);
+                i++;
+            }
+
+            return result;
+        }
+
         public static int SequentialHashCode<T>(this IEnumerable<T> collection)
         {
             return collection.SequentialHashCode(EqualityComparer<T>.Default);

src/Squidex.Infrastructure/Language.cs

@@ -35,7 +35,7 @@ namespace Squidex.Infrastructure
             }
         }
 
-        public static IEnumerable<Language> AllLanguages
+        public static IReadOnlyCollection<Language> AllLanguages
         {
             get { return AllLanguagesField.Values; }
         }

src/Squidex.Infrastructure/Log/IArrayWriter.cs

@@ -12,12 +12,17 @@ namespace Squidex.Infrastructure.Log
     public interface IArrayWriter
     {
         IArrayWriter WriteValue(string value);
+
         IArrayWriter WriteValue(double value);
+
         IArrayWriter WriteValue(long value);
+
         IArrayWriter WriteValue(bool value);
 
         IArrayWriter WriteValue(TimeSpan value);
+
         IArrayWriter WriteValue(DateTime value);
+
         IArrayWriter WriteValue(DateTimeOffset value);
 
         IArrayWriter WriteObject(Action<IObjectWriter> objectWriter);

src/Squidex.Infrastructure/Log/IObjectWriter.cs

@@ -12,15 +12,21 @@ namespace Squidex.Infrastructure.Log
     public interface IObjectWriter
     {
         IObjectWriter WriteProperty(string property, string value);
+
         IObjectWriter WriteProperty(string property, double value);
+
         IObjectWriter WriteProperty(string property, long value);
+
         IObjectWriter WriteProperty(string property, bool value);
 
         IObjectWriter WriteProperty(string property, TimeSpan value);
+
         IObjectWriter WriteProperty(string property, DateTime value);
+
         IObjectWriter WriteProperty(string property, DateTimeOffset value);
 
         IObjectWriter WriteObject(string property, Action<IObjectWriter> objectWriter);
+
         IObjectWriter WriteArray(string property, Action<IArrayWriter> arrayWriter);
     }
 }

src/Squidex.Infrastructure/Log/IObjectWriterFactory.cs

@@ -0,0 +1,16 @@
+// ==========================================================================
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex UG (haftungsbeschraenkt)
+//  All rights reserved. Licensed under the MIT license.
+// ==========================================================================
+
+namespace Squidex.Infrastructure.Log
+{
+    public interface IObjectWriterFactory
+    {
+        IObjectWriter Create();
+
+        void Release(IObjectWriter writer);
+    }
+}

src/Squidex.Infrastructure/Log/JsonLogWriter.cs

@@ -14,18 +14,37 @@ namespace Squidex.Infrastructure.Log
 {
     public sealed class JsonLogWriter : IObjectWriter, IArrayWriter
     {
-        private readonly bool extraLine;
+        private readonly Formatting formatting;
+        private readonly bool formatLine;
         private readonly StringWriter textWriter = new StringWriter();
-        private readonly JsonWriter jsonWriter;
+        private JsonWriter jsonWriter;
 
-        public JsonLogWriter(Formatting formatting = Formatting.None, bool extraLine = false)
+        public int BufferSize
         {
-            this.extraLine = extraLine;
+            get { return textWriter.GetStringBuilder().Capacity; }
+        }
+
+        internal JsonLogWriter(Formatting formatting, bool formatLine)
+        {
+            this.formatLine = formatLine;
+            this.formatting = formatting;
 
+            Start();
+        }
+
+        private void Start()
+        {
             jsonWriter = new JsonTextWriter(textWriter) { Formatting = formatting };
             jsonWriter.WriteStartObject();
         }
 
+        internal void Reset()
+        {
+            textWriter.GetStringBuilder().Clear();
+
+            Start();
+        }
+
         IArrayWriter IArrayWriter.WriteValue(string value)
         {
             jsonWriter.WriteValue(value);
@@ -170,14 +189,12 @@ namespace Squidex.Infrastructure.Log
         {
             jsonWriter.WriteEndObject();
 
-            var result = textWriter.ToString();
-
-            if (extraLine)
+            if (formatLine)
             {
-                result += Environment.NewLine;
+                textWriter.WriteLine();
             }
 
-            return result;
+            return textWriter.ToString();
         }
     }
 }

src/Squidex.Infrastructure/Log/JsonLogWriterFactory.cs

@@ -0,0 +1,61 @@
+// ==========================================================================
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex UG (haftungsbeschraenkt)
+//  All rights reserved. Licensed under the MIT license.
+// ==========================================================================
+
+using System.Collections.Concurrent;
+using Newtonsoft.Json;
+
+namespace Squidex.Infrastructure.Log
+{
+    public sealed class JsonLogWriterFactory : IObjectWriterFactory
+    {
+        private const int MaxPoolSize = 10;
+        private const int MaxCapacity = 5000;
+        private readonly ConcurrentStack<JsonLogWriter> pool = new ConcurrentStack<JsonLogWriter>();
+        private readonly Formatting formatting;
+        private readonly bool formatLine;
+
+        public JsonLogWriterFactory(Formatting formatting = Formatting.None, bool formatLine = false)
+        {
+            this.formatting = formatting;
+            this.formatLine = formatLine;
+        }
+
+        public static JsonLogWriterFactory Default()
+        {
+            return new JsonLogWriterFactory();
+        }
+
+        public static JsonLogWriterFactory Readable()
+        {
+            return new JsonLogWriterFactory(Formatting.Indented, true);
+        }
+
+        public IObjectWriter Create()
+        {
+            if (pool.TryPop(out var writer))
+            {
+                writer.Reset();
+            }
+            else
+            {
+                writer = new JsonLogWriter(formatting, formatLine);
+            }
+
+            return writer;
+        }
+
+        public void Release(IObjectWriter writer)
+        {
+            var jsonWriter = (JsonLogWriter)writer;
+
+            if (pool.Count < MaxPoolSize && jsonWriter.BufferSize < MaxCapacity)
+            {
+                pool.Push(jsonWriter);
+            }
+        }
+    }
+}

src/Squidex.Infrastructure/Log/SemanticLog.cs

@@ -13,20 +13,21 @@ namespace Squidex.Infrastructure.Log
 {
     public sealed class SemanticLog : ISemanticLog
     {
-        private readonly IEnumerable<ILogChannel> channels;
-        private readonly IEnumerable<ILogAppender> appenders;
-        private readonly Func<IObjectWriter> writerFactory;
+        private readonly ILogChannel[] channels;
+        private readonly ILogAppender[] appenders;
+        private readonly IObjectWriterFactory writerFactory;
 
         public SemanticLog(
             IEnumerable<ILogChannel> channels,
             IEnumerable<ILogAppender> appenders,
-            Func<IObjectWriter> writerFactory)
+            IObjectWriterFactory writerFactory)
         {
             Guard.NotNull(channels, nameof(channels));
             Guard.NotNull(appenders, nameof(appenders));
+            Guard.NotNull(writerFactory, nameof(writerFactory));
 
-            this.channels = channels;
-            this.appenders = appenders;
+            this.channels = channels.ToArray();
+            this.appenders = appenders.ToArray();
             this.writerFactory = writerFactory;
         }
 
@@ -38,11 +39,11 @@ namespace Squidex.Infrastructure.Log
 
             List<Exception> exceptions = null;
 
-            foreach (var channel in channels)
+            for (var i = 0; i < channels.Length; i++)
             {
                 try
                 {
-                    channel.Log(logLevel, formattedText);
+                    channels[i].Log(logLevel, formattedText);
                 }
                 catch (Exception ex)
                 {
@@ -63,18 +64,25 @@ namespace Squidex.Infrastructure.Log
 
         private string FormatText(SemanticLogLevel logLevel, Action<IObjectWriter> objectWriter)
         {
-            var writer = writerFactory();
+            var writer = writerFactory.Create();
 
-            writer.WriteProperty(nameof(logLevel), logLevel.ToString());
+            try
+            {
+                writer.WriteProperty(nameof(logLevel), logLevel.ToString());
+
+                objectWriter(writer);
 
-            objectWriter(writer);
+                for (var i = 0; i < appenders.Length; i++)
+                {
+                    appenders[i].Append(writer);
+                }
 
-            foreach (var appender in appenders)
+                return writer.ToString();
+            }
+            finally
             {
-                appender.Append(writer);
+                writerFactory.Release(writer);
             }
-
-            return writer.ToString();
         }
 
         public ISemanticLog CreateScope(Action<IObjectWriter> objectWriter)

src/Squidex.Infrastructure/Security/PermissionSet.cs

@@ -14,7 +14,7 @@ namespace Squidex.Infrastructure.Security
 {
     public sealed class PermissionSet : IReadOnlyCollection<Permission>
     {
-        public static readonly PermissionSet Empty = new PermissionSet(new string[0]);
+        public static readonly PermissionSet Empty = new PermissionSet(Array.Empty<string>());
 
         private readonly List<Permission> permissions;
         private readonly Lazy<string> display;

src/Squidex.Infrastructure/States/Persistence{TSnapshot,TKey}.cs

@@ -9,6 +9,7 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
+using Squidex.Infrastructure;
 using Squidex.Infrastructure.EventSourcing;
 
 #pragma warning disable RECS0012 // 'if' statement can be re-written as 'switch' statement
@@ -190,7 +191,7 @@ namespace Squidex.Infrastructure.States
 
         private EventData[] GetEventData(Envelope<IEvent>[] events, Guid commitId)
         {
-            return events.Select(x => eventDataFormatter.ToEventData(x, commitId, true)).ToArray();
+            return events.ToArray(x => eventDataFormatter.ToEventData(x, commitId, true));
         }
 
         private string GetStreamName()

src/Squidex.Infrastructure/ValidationError.cs

@@ -14,7 +14,7 @@ namespace Squidex.Infrastructure
     [Serializable]
     public sealed class ValidationError
     {
-        private static readonly string[] FallbackProperties = new string[0];
+        private static readonly string[] FallbackProperties = Array.Empty<string>();
         private readonly string message;
         private readonly string[] propertyNames;
 

src/Squidex/Areas/Api/Controllers/Apps/AppClientsController.cs

@@ -10,6 +10,7 @@ using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc;
 using Squidex.Areas.Api.Controllers.Apps.Models;
 using Squidex.Domain.Apps.Entities.Apps.Commands;
+using Squidex.Infrastructure;
 using Squidex.Infrastructure.Commands;
 using Squidex.Pipeline;
 using Squidex.Shared;
@@ -45,7 +46,7 @@ namespace Squidex.Areas.Api.Controllers.Apps
         [ApiCosts(0)]
         public IActionResult GetClients(string app)
         {
-            var response = App.Clients.Select(ClientDto.FromKvp).ToList();
+            var response = App.Clients.Select(ClientDto.FromKvp).ToArray();
 
             Response.Headers["ETag"] = App.Version.ToString();
 

src/Squidex/Areas/Api/Controllers/Apps/AppPatternsController.cs

@@ -46,7 +46,7 @@ namespace Squidex.Areas.Api.Controllers.Apps
         [ApiCosts(0)]
         public IActionResult GetPatterns(string app)
         {
-            var response = App.Patterns.Select(AppPatternDto.FromKvp).OrderBy(x => x.Name).ToList();
+            var response = App.Patterns.Select(AppPatternDto.FromKvp).OrderBy(x => x.Name).ToArray();
 
             Response.Headers["ETag"] = App.Version.ToString();
 

src/Squidex/Areas/Api/Controllers/Apps/AppsController.cs

@@ -13,6 +13,7 @@ using Squidex.Areas.Api.Controllers.Apps.Models;
 using Squidex.Domain.Apps.Entities;
 using Squidex.Domain.Apps.Entities.Apps.Commands;
 using Squidex.Domain.Apps.Entities.Apps.Services;
+using Squidex.Infrastructure;
 using Squidex.Infrastructure.Commands;
 using Squidex.Infrastructure.Security;
 using Squidex.Pipeline;
@@ -62,7 +63,7 @@ namespace Squidex.Areas.Api.Controllers.Apps
 
             var entities = await appProvider.GetUserApps(userId, userPermissions);
 
-            var response = entities.Select(a => AppDto.FromApp(a, userId, userPermissions, appPlansProvider)).ToList();
+            var response = entities.ToArray(a => AppDto.FromApp(a, userId, userPermissions, appPlansProvider));
 
             Response.Headers["ETag"] = response.ToManyEtag();
 

src/Squidex/Areas/Api/Controllers/Apps/Models/AppDto.cs

@@ -13,6 +13,7 @@ using Newtonsoft.Json;
 using NodaTime;
 using Squidex.Domain.Apps.Entities.Apps;
 using Squidex.Domain.Apps.Entities.Apps.Services;
+using Squidex.Infrastructure;
 using Squidex.Infrastructure.Reflection;
 using Squidex.Infrastructure.Security;
 using Squidex.Pipeline;
@@ -80,7 +81,7 @@ namespace Squidex.Areas.Api.Controllers.Apps.Models
 
             var response = SimpleMapper.Map(app, new AppDto());
 
-            response.Permissions = permissions.Select(x => x.Id).ToArray();
+            response.Permissions = permissions.ToArray(x => x.Id);
             response.PlanName = plans.GetPlanForApp(app)?.Name;
             response.PlanUpgrade = plans.GetPlanUpgradeForApp(app)?.Name;
 

src/Squidex/Areas/Api/Controllers/Apps/Models/AppLanguageDto.cs

@@ -5,7 +5,7 @@
 //  All rights reserved. Licensed under the MIT license.
 // ==========================================================================
 
-using System.Collections.Generic;
+using System;
 using System.ComponentModel.DataAnnotations;
 using System.Linq;
 using Squidex.Domain.Apps.Core.Apps;
@@ -34,7 +34,7 @@ namespace Squidex.Areas.Api.Controllers.Apps.Models
         /// The fallback languages.
         /// </summary>
         [Required]
-        public List<Language> Fallback { get; set; }
+        public Language[] Fallback { get; set; }
 
         /// <summary>
         /// Indicates if the language is the master language.
@@ -48,7 +48,7 @@ namespace Squidex.Areas.Api.Controllers.Apps.Models
 
         public static AppLanguageDto FromCommand(AddLanguage command)
         {
-            return SimpleMapper.Map(command.Language, new AppLanguageDto { Fallback = new List<Language>() });
+            return SimpleMapper.Map(command.Language, new AppLanguageDto { Fallback = Array.Empty<Language>() });
         }
 
         public static AppLanguageDto[] FromApp(IAppEntity app)
@@ -63,7 +63,7 @@ namespace Squidex.Areas.Api.Controllers.Apps.Models
                 {
                     IsMaster = x == app.LanguagesConfig.Master,
                     IsOptional = x.IsOptional,
-                    Fallback = x.LanguageFallbacks.ToList()
+                    Fallback = x.LanguageFallbacks.ToArray()
                 });
         }
     }

src/Squidex/Areas/Api/Controllers/Apps/Models/ContributorsDto.cs

@@ -9,6 +9,7 @@ using System.ComponentModel.DataAnnotations;
 using System.Linq;
 using Squidex.Domain.Apps.Entities.Apps;
 using Squidex.Domain.Apps.Entities.Apps.Services;
+using Squidex.Infrastructure;
 
 namespace Squidex.Areas.Api.Controllers.Apps.Models
 {
@@ -29,7 +30,7 @@ namespace Squidex.Areas.Api.Controllers.Apps.Models
         {
             var plan = plans.GetPlanForApp(app);
 
-            var contributors = app.Contributors.Select(x => new ContributorDto { ContributorId = x.Key, Role = x.Value }).ToArray();
+            var contributors = app.Contributors.ToArray(x => new ContributorDto { ContributorId = x.Key, Role = x.Value });
 
             return new ContributorsDto { Contributors = contributors, MaxContributors = plan.MaxContributors };
         }

src/Squidex/Areas/Api/Controllers/Apps/Models/RoleDto.cs

@@ -6,6 +6,7 @@
 // ==========================================================================
 
 using System;
+using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
 using System.Linq;
 using Squidex.Domain.Apps.Core.Apps;
@@ -35,7 +36,7 @@ namespace Squidex.Areas.Api.Controllers.Apps.Models
         /// Associated list of permissions.
         /// </summary>
         [Required]
-        public string[] Permissions { get; set; }
+        public IEnumerable<string> Permissions { get; set; }
 
         public static RoleDto FromRole(Role role, IAppEntity app)
         {
@@ -46,7 +47,7 @@ namespace Squidex.Areas.Api.Controllers.Apps.Models
                 Name = role.Name,
                 NumClients = app.Clients.Count(x => string.Equals(x.Value.Role, role.Name, StringComparison.OrdinalIgnoreCase)),
                 NumContributors = app.Contributors.Count(x => string.Equals(x.Value, role.Name, StringComparison.OrdinalIgnoreCase)),
-                Permissions = permissions.ToIds().ToArray()
+                Permissions = permissions.ToIds()
             };
         }
     }

src/Squidex/Areas/Api/Controllers/Apps/Models/UpdateLanguageDto.cs

@@ -5,7 +5,6 @@
 //  All rights reserved. Licensed under the MIT license.
 // ==========================================================================
 
-using System.Collections.Generic;
 using Squidex.Domain.Apps.Entities.Apps.Commands;
 using Squidex.Infrastructure;
 using Squidex.Infrastructure.Reflection;
@@ -27,7 +26,7 @@ namespace Squidex.Areas.Api.Controllers.Apps.Models
         /// <summary>
         /// Optional fallback languages.
         /// </summary>
-        public List<Language> Fallback { get; set; }
+        public Language[] Fallback { get; set; }
 
         public UpdateLanguage ToCommand(Language language)
         {

src/Squidex/Areas/Api/Controllers/Backups/BackupsController.cs

@@ -13,6 +13,7 @@ using Microsoft.AspNetCore.Mvc;
 using Orleans;
 using Squidex.Areas.Api.Controllers.Backups.Models;
 using Squidex.Domain.Apps.Entities.Backup;
+using Squidex.Infrastructure;
 using Squidex.Infrastructure.Commands;
 using Squidex.Infrastructure.Tasks;
 using Squidex.Pipeline;
@@ -53,7 +54,7 @@ namespace Squidex.Areas.Api.Controllers.Backups
 
             var jobs = await backupGrain.GetStateAsync();
 
-            var response = jobs.Value.Select(BackupJobDto.FromBackup).ToList();
+            var response = jobs.Value.ToArray(BackupJobDto.FromBackup);
 
             return Ok(response);
         }

src/Squidex/Areas/Api/Controllers/Comments/Models/CommentsDto.cs

@@ -17,12 +17,12 @@ namespace Squidex.Areas.Api.Controllers.Comments.Models
         /// <summary>
         /// The created comments including the updates.
         /// </summary>
-        public List<CommentDto> CreatedComments { get; set; }
+        public CommentDto[] CreatedComments { get; set; }
 
         /// <summary>
         /// The updates comments since the last version.
         /// </summary>
-        public List<CommentDto> UpdatedComments { get; set; }
+        public CommentDto[] UpdatedComments { get; set; }
 
         /// <summary>
         /// The deleted comments since the last version.
@@ -38,8 +38,8 @@ namespace Squidex.Areas.Api.Controllers.Comments.Models
         {
             return new CommentsDto
             {
-                CreatedComments = result.CreatedComments.Select(CommentDto.FromComment).ToList(),
-                UpdatedComments = result.UpdatedComments.Select(CommentDto.FromComment).ToList(),
+                CreatedComments = result.CreatedComments.Select(CommentDto.FromComment).ToArray(),
+                UpdatedComments = result.UpdatedComments.Select(CommentDto.FromComment).ToArray(),
                 DeletedComments = result.DeletedComments,
                 Version = result.Version
             };

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

@@ -18,6 +18,7 @@ using Squidex.Domain.Apps.Entities;
 using Squidex.Domain.Apps.Entities.Contents;
 using Squidex.Domain.Apps.Entities.Contents.Commands;
 using Squidex.Domain.Apps.Entities.Contents.GraphQL;
+using Squidex.Infrastructure;
 using Squidex.Infrastructure.Commands;
 using Squidex.Pipeline;
 using Squidex.Shared;

src/Squidex/Areas/Api/Controllers/EventConsumers/EventConsumersController.cs

@@ -35,7 +35,7 @@ namespace Squidex.Areas.Api.Controllers.EventConsumers
         {
             var entities = await GetGrain().GetConsumersAsync();
 
-            var response = entities.Value.OrderBy(x => x.Name).Select(EventConsumerDto.FromEventConsumerInfo).ToList();
+            var response = entities.Value.OrderBy(x => x.Name).Select(EventConsumerDto.FromEventConsumerInfo).ToArray();
 
             return Ok(response);
         }

src/Squidex/Areas/Api/Controllers/History/HistoryController.cs

@@ -10,6 +10,7 @@ using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc;
 using Squidex.Areas.Api.Controllers.History.Models;
 using Squidex.Domain.Apps.Entities.History;
+using Squidex.Infrastructure;
 using Squidex.Infrastructure.Commands;
 using Squidex.Pipeline;
 using Squidex.Shared;
@@ -48,7 +49,7 @@ namespace Squidex.Areas.Api.Controllers.History
         {
             var entities = await historyService.QueryByChannelAsync(AppId, channel, 100);
 
-            var response = entities.Select(HistoryEventDto.FromHistoryEvent).ToList();
+            var response = entities.ToArray(HistoryEventDto.FromHistoryEvent);
 
             return Ok(response);
         }

src/Squidex/Areas/Api/Controllers/Languages/LanguagesController.cs

@@ -39,7 +39,7 @@ namespace Squidex.Areas.Api.Controllers.Languages
         [ApiPermission]
         public IActionResult GetLanguages()
         {
-            var response = Language.AllLanguages.Select(LanguageDto.FromLanguage).ToList();
+            var response = Language.AllLanguages.Select(LanguageDto.FromLanguage).ToArray();
 
             Response.Headers["Etag"] = "1";
 

src/Squidex/Areas/Api/Controllers/Plans/Models/AppPlansDto.cs

@@ -5,7 +5,6 @@
 //  All rights reserved. Licensed under the MIT license.
 // ==========================================================================
 
-using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
 using System.Linq;
 using Squidex.Domain.Apps.Entities.Apps;
@@ -19,7 +18,7 @@ namespace Squidex.Areas.Api.Controllers.Plans.Models
         /// The available plans.
         /// </summary>
         [Required]
-        public List<PlanDto> Plans { get; set; }
+        public PlanDto[] Plans { get; set; }
 
         /// <summary>
         /// The current plan id.
@@ -43,7 +42,7 @@ namespace Squidex.Areas.Api.Controllers.Plans.Models
             var response = new AppPlansDto
             {
                 CurrentPlanId = planId,
-                Plans = plans.GetAvailablePlans().Select(PlanDto.FromPlan).ToList(),
+                Plans = plans.GetAvailablePlans().Select(PlanDto.FromPlan).ToArray(),
                 PlanOwner = app.Plan?.Owner.Identifier,
                 HasPortal = hasPortal
             };

src/Squidex/Areas/Api/Controllers/Rules/Models/Converters/RuleTriggerDtoFactory.cs

@@ -33,7 +33,7 @@ namespace Squidex.Areas.Api.Controllers.Rules.Models.Converters
 
         public RuleTriggerDto Visit(ContentChangedTrigger trigger)
         {
-            var schemas = trigger.Schemas.Select(x => SimpleMapper.Map(x, new ContentChangedTriggerSchemaDto())).ToList();
+            var schemas = trigger.Schemas.Select(x => SimpleMapper.Map(x, new ContentChangedTriggerSchemaDto())).ToArray();
 
             return new ContentChangedTriggerDto { Schemas = schemas, HandleAll = trigger.HandleAll };
         }

src/Squidex/Areas/Api/Controllers/Rules/Models/RuleEventsDto.cs

@@ -9,6 +9,7 @@ using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
 using System.Linq;
 using Squidex.Domain.Apps.Entities.Rules;
+using Squidex.Infrastructure;
 
 namespace Squidex.Areas.Api.Controllers.Rules.Models
 {

src/Squidex/Areas/Api/Controllers/Rules/Models/Triggers/ContentChangedTriggerDto.cs

@@ -23,7 +23,7 @@ namespace Squidex.Areas.Api.Controllers.Rules.Models.Triggers
         /// The schema settings.
         /// </summary>
         [Required]
-        public List<ContentChangedTriggerSchemaDto> Schemas { get; set; }
+        public ContentChangedTriggerSchemaDto[] Schemas { get; set; }
 
         /// <summary>
         /// Determines whether the trigger should handle all content changes events.

src/Squidex/Areas/Api/Controllers/Rules/RulesController.cs

@@ -101,7 +101,7 @@ namespace Squidex.Areas.Api.Controllers.Rules
         {
             var entities = await appProvider.GetRulesAsync(AppId);
 
-            var response = entities.Select(RuleDto.FromRule);
+            var response = entities.Select(RuleDto.FromRule).ToArray();
 
             Response.Headers["ETag"] = response.ToManyEtag(0);
 

src/Squidex/Areas/Api/Controllers/Schemas/SchemasController.cs

@@ -13,6 +13,7 @@ using Squidex.Areas.Api.Controllers.Schemas.Models;
 using Squidex.Domain.Apps.Entities;
 using Squidex.Domain.Apps.Entities.Schemas;
 using Squidex.Domain.Apps.Entities.Schemas.Commands;
+using Squidex.Infrastructure;
 using Squidex.Infrastructure.Commands;
 using Squidex.Pipeline;
 using Squidex.Shared;
@@ -50,7 +51,7 @@ namespace Squidex.Areas.Api.Controllers.Schemas
         {
             var schemas = await appProvider.GetSchemasAsync(AppId);
 
-            var response = schemas.Select(SchemaDto.FromSchema).ToList();
+            var response = schemas.ToArray(SchemaDto.FromSchema);
 
             Response.Headers["ETag"] = response.ToManyEtag();
 

src/Squidex/Areas/Api/Controllers/Statistics/UsagesController.cs

@@ -13,6 +13,7 @@ using Microsoft.AspNetCore.Mvc;
 using Squidex.Areas.Api.Controllers.Statistics.Models;
 using Squidex.Domain.Apps.Entities.Apps.Services;
 using Squidex.Domain.Apps.Entities.Assets;
+using Squidex.Infrastructure;
 using Squidex.Infrastructure.Commands;
 using Squidex.Infrastructure.UsageTracking;
 using Squidex.Pipeline;
@@ -92,7 +93,7 @@ namespace Squidex.Areas.Api.Controllers.Statistics
 
             var entities = await usageTracker.QueryAsync(AppId.ToString(), fromDate.Date, toDate.Date);
 
-            var response = entities.ToDictionary(x => x.Key, x => x.Value.Select(CallsUsageDto.FromUsage).ToList());
+            var response = entities.ToDictionary(x => x.Key, x => x.Value.Select(CallsUsageDto.FromUsage).ToArray());
 
             return Ok(response);
         }
@@ -146,7 +147,7 @@ namespace Squidex.Areas.Api.Controllers.Statistics
 
             var entities = await assetStatsRepository.QueryAsync(AppId, fromDate.Date, toDate.Date);
 
-            var models = entities.Select(StorageUsageDto.FromStats).ToList();
+            var models = entities.Select(StorageUsageDto.FromStats).ToArray();
 
             return Ok(models);
         }

src/Squidex/Areas/Api/Controllers/Users/Models/UserDto.cs

@@ -5,8 +5,8 @@
 //  All rights reserved. Licensed under the MIT license.
 // ==========================================================================
 
+using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
-using System.Linq;
 using Squidex.Infrastructure.Reflection;
 using Squidex.Shared.Users;
 
@@ -42,11 +42,11 @@ namespace Squidex.Areas.Api.Controllers.Users.Models
         /// Additional permissions for the user.
         /// </summary>
         [Required]
-        public string[] Permissions { get; set; }
+        public IEnumerable<string> Permissions { get; set; }
 
         public static UserDto FromUser(IUser user)
         {
-            var permissions = user.Permissions().ToIds().ToArray();
+            var permissions = user.Permissions().ToIds();
 
             return SimpleMapper.Map(user, new UserDto { DisplayName = user.DisplayName(), Permissions = permissions });
         }

src/Squidex/Areas/Frontend/Middlewares/WebpackMiddleware.cs

@@ -18,7 +18,7 @@ namespace Squidex.Areas.Frontend.Middlewares
         private const string Host = "localhost";
         private const string Port = "3000";
         private static readonly string[] Scripts = { "shims.js", "app.js" };
-        private static readonly string[] Styles = new string[0];
+        private static readonly string[] Styles = Array.Empty<string>();
         private readonly RequestDelegate next;
 
         public WebpackMiddleware(RequestDelegate next)

src/Squidex/Config/Domain/LoggingServices.cs

@@ -8,7 +8,6 @@
 using System;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
-using Newtonsoft.Json;
 using Squidex.Infrastructure.Log;
 using Squidex.Pipeline;
 
@@ -25,11 +24,13 @@ namespace Squidex.Config.Domain
         {
             if (config.GetValue<bool>("logging:human"))
             {
-                services.AddSingletonAs(c => new Func<IObjectWriter>(() => new JsonLogWriter(Formatting.Indented, true)));
+                services.AddSingletonAs(JsonLogWriterFactory.Readable())
+                    .As<IObjectWriterFactory>();
             }
             else
             {
-                services.AddSingletonAs(c => new Func<IObjectWriter>(() => new JsonLogWriter()));
+                services.AddSingletonAs(JsonLogWriterFactory.Default())
+                    .As<IObjectWriterFactory>();
             }
 
             var loggingFile = config.GetValue<string>("logging:file");

src/Squidex/Config/Web/WebExtensions.cs

@@ -5,7 +5,6 @@
 //  All rights reserved. Licensed under the MIT license.
 // ==========================================================================
 
-using System.Collections.Generic;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.HttpOverrides;
 using Squidex.Infrastructure.Diagnostics;

src/Squidex/Pipeline/ApiExceptionFilterAttribute.cs

@@ -61,7 +61,7 @@ namespace Squidex.Pipeline
 
         private static IActionResult OnValidationException(ValidationException ex)
         {
-            return ErrorResult(400, new ErrorDto { Message = ex.Summary, Details = ex.Errors?.Select(e => e.Message).ToArray() });
+            return ErrorResult(400, new ErrorDto { Message = ex.Summary, Details = ex.Errors?.ToArray(e => e.Message) });
         }
 
         private static IActionResult ErrorResult(int statusCode, ErrorDto error)

src/Squidex/Pipeline/ETagExtensions.cs

@@ -5,8 +5,9 @@
 //  All rights reserved. Licensed under the MIT license.
 // ==========================================================================
 
+using System;
 using System.Collections.Generic;
-using System.Linq;
+using System.Text;
 using Squidex.Infrastructure;
 using Squidex.Infrastructure.Log;
 
@@ -14,17 +15,59 @@ namespace Squidex.Pipeline
 {
     public static class ETagExtensions
     {
-        public static string ToManyEtag<T>(this IEnumerable<T> items, long total = 0) where T : IGenerateEtag
+        private static readonly int GuidLength = Guid.Empty.ToString().Length;
+
+        public static string ToManyEtag<T>(this IReadOnlyList<T> items, long total = 0) where T : IGenerateEtag
         {
             using (Profiler.Trace("CalculateEtag"))
             {
-                return $"{total}_{string.Join(";", items.Select(x => $"{x.Id}{x.Version}"))}".Sha256Base64();
+                var unhashed = Unhashed(items, total);
+
+                return unhashed.Sha256Base64();
             }
         }
 
-        public static string ToSurrogateKeys<T>(this IEnumerable<T> items) where T : IGenerateEtag
+        private static string Unhashed<T>(IReadOnlyList<T> items, long total) where T : IGenerateEtag
         {
-            return string.Join(" ", items.Select(x => x.Id));
+            var sb = new StringBuilder((items.Count * (GuidLength + 4)) + 10);
+
+            sb.Append(total);
+            sb.Append("_");
+
+            if (items.Count > 0)
+            {
+                sb.Append(items[0].Id.ToString());
+                sb.Append(items[0].Version);
+
+                for (var i = 1; i < items.Count; i++)
+                {
+                    sb.Append(";");
+                    sb.Append(items[i].Id.ToString());
+                    sb.Append(items[i].Version);
+                }
+            }
+
+            return sb.ToString();
+        }
+
+        public static string ToSurrogateKeys<T>(this IReadOnlyList<T> items) where T : IGenerateEtag
+        {
+            if (items.Count == 0)
+            {
+                return string.Empty;
+            }
+
+            var sb = new StringBuilder(items.Count * (GuidLength + 1));
+
+            sb.Append(items[0].Id.ToString());
+
+            for (var i = 1; i < items.Count; i++)
+            {
+                sb.Append(" ");
+                sb.Append(items[i].Id.ToString());
+            }
+
+            return sb.ToString();
         }
 
         public static string ToEtag<T>(this T item) where T : IGenerateEtag

src/Squidex/app/theme/icomoon/icons/control-Tags.svg

@@ -0,0 +1,75 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Generator: Adobe Illustrator 21.1.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   version="1.1"
+   id="Layer_1"
+   x="0px"
+   y="0px"
+   viewBox="0 0 34.5 31"
+   style="enable-background:new 0 0 34.5 31;"
+   xml:space="preserve"
+   sodipodi:docname="EditTag-icon.svg"
+   inkscape:version="0.92.3 (2405546, 2018-03-11)"><metadata
+   id="metadata19"><rdf:RDF><cc:Work
+       rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
+         rdf:resource="http://purl.org/dc/dcmitype/StillImage" /></cc:Work></rdf:RDF></metadata><defs
+   id="defs17" /><sodipodi:namedview
+   pagecolor="#ffffff"
+   bordercolor="#666666"
+   borderopacity="1"
+   objecttolerance="10"
+   gridtolerance="10"
+   guidetolerance="10"
+   inkscape:pageopacity="0"
+   inkscape:pageshadow="2"
+   inkscape:window-width="1278"
+   inkscape:window-height="1008"
+   id="namedview15"
+   showgrid="false"
+   inkscape:zoom="10.766271"
+   inkscape:cx="14.902269"
+   inkscape:cy="19.022022"
+   inkscape:window-x="1913"
+   inkscape:window-y="0"
+   inkscape:window-maximized="0"
+   inkscape:current-layer="Layer_1" />
+<style
+   type="text/css"
+   id="style2">
+	.st0{fill:#B3BBBF;}
+</style>
+<g
+   id="g6"
+   style="fill:#000000">
+	<path
+   class="st0"
+   d="M 15.1,10 V 8.5 h 3.4 v -2 C 18.5,5 17.3,3.8 15.8,3.8 14.3,3.8 13.1,5 13.1,6.5 v 16.4 l 2.7,4.9 2.7,-4.9 V 10 Z"
+   id="path4"
+   inkscape:connector-curvature="0"
+   style="fill:#000000" />
+</g>
+<g
+   id="g12"
+   style="fill:#000000">
+	<path
+   class="st0"
+   d="m 10.9,21.7 h -2 C 7.1,21.7 5.7,20.3 5.7,18.5 V 10.8 C 5.7,9 7.1,7.6 8.9,7.6 h 2 V 6.3 h -2 c -2.5,0 -4.5,2 -4.5,4.5 v 7.7 c 0,2.5 2,4.5 4.5,4.5 h 2 z"
+   id="path8"
+   inkscape:connector-curvature="0"
+   style="fill:#000000" />
+	<path
+   class="st0"
+   d="M 25.8,7.9 C 25,6.9 23.8,6.3 22.5,6.3 h -1.8 v 1.3 h 1.2 c 1.3,0 2.5,0.6 3.3,1.6 l 4.4,5.5 -4.3,5.4 c -0.8,1 -2.1,1.6 -3.4,1.6 H 20.8 V 23 h 1.7 c 1.3,0 2.6,-0.6 3.4,-1.6 l 5.4,-6.7 z"
+   id="path10"
+   inkscape:connector-curvature="0"
+   style="fill:#000000" />
+</g>
+</svg>

tests/Squidex.Domain.Apps.Core.Tests/Model/Schemas/FieldRegistryTests.cs

@@ -28,12 +28,12 @@ namespace Squidex.Domain.Apps.Core.Model.Schemas
                 return default(T);
             }
 
-            public override RootField CreateRootField(long id, string name, Partitioning partitioning)
+            public override RootField CreateRootField(long id, string name, Partitioning partitioning, IFieldSettings settings = null)
             {
                 return null;
             }
 
-            public override NestedField CreateNestedField(long id, string name)
+            public override NestedField CreateNestedField(long id, string name, IFieldSettings settings = null)
             {
                 return null;
             }

tests/Squidex.Domain.Apps.Entities.Tests/Apps/RoleExtensionsRests.cs

@@ -5,6 +5,7 @@
 //  All rights reserved. Licensed under the MIT license.
 // ==========================================================================
 
+using System;
 using System.Linq;
 using Squidex.Infrastructure.Security;
 using Xunit;
@@ -16,7 +17,7 @@ namespace Squidex.Domain.Apps.Entities.Apps
         [Fact]
         public void Should_add_common_permission()
         {
-            var source = new string[0];
+            var source = Array.Empty<string>();
             var result = source.Prefix("my-app");
 
             Assert.Equal(new[] { "squidex.apps.my-app.common" }, result);

tests/Squidex.Infrastructure.Tests/Log/JsonLogWriterTests.cs

@@ -13,7 +13,7 @@ namespace Squidex.Infrastructure.Log
 {
     public class JsonLogWriterTests
     {
-        private readonly IObjectWriter sut = new JsonLogWriter();
+        private readonly IObjectWriter sut = JsonLogWriterFactory.Default().Create();
 
         [Fact]
         public void Should_write_boolean_property()
@@ -59,6 +59,7 @@ namespace Squidex.Infrastructure.Log
         public void Should_write_datetimeoffset_property()
         {
             var value = DateTimeOffset.UtcNow;
+
             var result = sut.WriteProperty("property", value).ToString();
 
             Assert.Equal($"{{\"property\":\"{value:o}\"}}", result);
@@ -68,6 +69,7 @@ namespace Squidex.Infrastructure.Log
         public void Should_write_date_property()
         {
             var value = DateTime.UtcNow;
+
             var result = sut.WriteProperty("property", value).ToString();
 
             Assert.Equal($"{{\"property\":\"{value:o}\"}}", result);
@@ -125,6 +127,7 @@ namespace Squidex.Infrastructure.Log
         public void Should_write_datetimeoffset_value()
         {
             var value = DateTimeOffset.UtcNow;
+
             var result = sut.WriteArray("property", a => a.WriteValue(value)).ToString();
 
             Assert.Equal($"{{\"property\":[\"{value:o}\"]}}", result);
@@ -134,6 +137,7 @@ namespace Squidex.Infrastructure.Log
         public void Should_write_date_value()
         {
             var value = DateTime.UtcNow;
+
             var result = sut.WriteArray("property", a => a.WriteValue(value)).ToString();
 
             Assert.Equal($"{{\"property\":[\"{value:yyyy-MM-ddTHH:mm:ssZ}\"]}}", result);
@@ -150,7 +154,7 @@ namespace Squidex.Infrastructure.Log
         [Fact]
         public void Should_write_pretty_json()
         {
-            IObjectWriter prettySut = new JsonLogWriter(Formatting.Indented);
+            var prettySut = new JsonLogWriterFactory(Formatting.Indented).Create();
 
             var result = prettySut.WriteProperty("property", 1.5).ToString();
 
@@ -160,7 +164,7 @@ namespace Squidex.Infrastructure.Log
         [Fact]
         public void Should_write_extra_line_after_object()
         {
-            IObjectWriter prettySut = new JsonLogWriter(Formatting.None, true);
+            var prettySut = new JsonLogWriterFactory(Formatting.None, true).Create();
 
             var result = prettySut.WriteProperty("property", 1.5).ToString();
 

tests/Squidex.Infrastructure.Tests/Log/SemanticLogAdapterTests.cs

@@ -38,7 +38,7 @@ namespace Squidex.Infrastructure.Log
                     output = message;
                 });
 
-            log = new Lazy<SemanticLog>(() => new SemanticLog(channels, new List<ILogAppender>(), () => new JsonLogWriter()));
+            log = new Lazy<SemanticLog>(() => new SemanticLog(channels, new List<ILogAppender>(), JsonLogWriterFactory.Default()));
 
             sut = SemanticLogLoggerProvider.ForTesting(log.Value);
         }
@@ -197,7 +197,7 @@ namespace Squidex.Infrastructure.Log
 
         private static string MakeTestCall(Action<IObjectWriter> writer)
         {
-            IObjectWriter sut = new JsonLogWriter();
+            var sut = JsonLogWriterFactory.Default().Create();
 
             writer(sut);
 

tests/Squidex.Infrastructure.Tests/Log/SemanticLogTests.cs

@@ -21,7 +21,7 @@ namespace Squidex.Infrastructure.Log
         private readonly List<ILogChannel> channels = new List<ILogChannel>();
         private readonly Lazy<SemanticLog> log;
         private readonly ILogChannel channel = A.Fake<ILogChannel>();
-        private string output;
+        private string output = string.Empty;
 
         public SemanticLog Log
         {
@@ -35,10 +35,29 @@ namespace Squidex.Infrastructure.Log
             A.CallTo(() => channel.Log(A<SemanticLogLevel>.Ignored, A<string>.Ignored))
                 .Invokes((SemanticLogLevel level, string message) =>
                 {
-                    output = message;
+                    output += message;
                 });
 
-            log = new Lazy<SemanticLog>(() => new SemanticLog(channels, appenders, () => new JsonLogWriter()));
+            log = new Lazy<SemanticLog>(() => new SemanticLog(channels, appenders, JsonLogWriterFactory.Default()));
+        }
+
+        [Fact]
+        public void Should_log_multiple_lines()
+        {
+            Log.Log(SemanticLogLevel.Error, w => w.WriteProperty("logMessage", "Msg1"));
+            Log.Log(SemanticLogLevel.Error, w => w.WriteProperty("logMessage", "Msg2"));
+
+            var expected1 =
+                LogTest(w => w
+                    .WriteProperty("logLevel", "Error")
+                    .WriteProperty("logMessage", "Msg1"));
+
+            var expected2 =
+                LogTest(w => w
+                    .WriteProperty("logLevel", "Error")
+                    .WriteProperty("logMessage", "Msg2"));
+
+            Assert.Equal(expected1 + expected2, output);
         }
 
         [Fact]
@@ -307,7 +326,7 @@ namespace Squidex.Infrastructure.Log
             A.CallTo(() => channel1.Log(A<SemanticLogLevel>.Ignored, A<string>.Ignored)).Throws(exception1);
             A.CallTo(() => channel2.Log(A<SemanticLogLevel>.Ignored, A<string>.Ignored)).Throws(exception2);
 
-            var sut = new SemanticLog(new[] { channel1, channel2 }, Enumerable.Empty<ILogAppender>(), () => new JsonLogWriter());
+            var sut = new SemanticLog(new[] { channel1, channel2 }, Enumerable.Empty<ILogAppender>(), JsonLogWriterFactory.Default());
 
             try
             {
@@ -324,7 +343,7 @@ namespace Squidex.Infrastructure.Log
 
         private static string LogTest(Action<IObjectWriter> writer)
         {
-            IObjectWriter sut = new JsonLogWriter();
+            var sut = JsonLogWriterFactory.Default().Create();
 
             writer(sut);