Fix query validator and already uploaded assets.

backend/src/Squidex.Domain.Apps.Core.Operations/GenerateJsonSchema/SchemaBuilder.cs

@@ -51,14 +51,14 @@ namespace Squidex.Domain.Apps.Core.GenerateJsonSchema
             return Enrich(new JsonSchemaProperty { Type = JsonObjectType.Number }, description, isRequired);
         }
 
-        public static JsonSchemaProperty ObjectProperty(JsonSchema item, string? description = null, bool isRequired = false)
+        public static JsonSchemaProperty StringProperty(string? description = null, bool isRequired = false)
         {
-            return Enrich(new JsonSchemaProperty { Type = JsonObjectType.Object, Reference = item }, description, isRequired);
+            return Enrich(new JsonSchemaProperty { Type = JsonObjectType.String }, description, isRequired);
         }
 
-        public static JsonSchemaProperty StringProperty(string? description = null, bool isRequired = false)
+        public static JsonSchemaProperty ObjectProperty(JsonSchema reference, string? description = null, bool isRequired = false)
         {
-            return Enrich(new JsonSchemaProperty { Type = JsonObjectType.String }, description, isRequired);
+            return Enrich(new JsonSchemaProperty { Reference = reference }, description, isRequired);
         }
 
         public static JsonSchemaProperty JsonProperty(string? description = null, bool isRequired = false)

backend/src/Squidex.Infrastructure/Queries/Json/PropertyPathValidator.cs

@@ -23,7 +23,7 @@ namespace Squidex.Infrastructure.Queries.Json
                 {
                     schema = p;
 
-                    if (schema.Type == JsonObjectType.None)
+                    if (schema.Type == JsonObjectType.None && schema.Reference == null)
                     {
                         break;
                     }

backend/src/Squidex/Areas/Api/Controllers/Assets/AssetContentController.cs

@@ -213,11 +213,18 @@ namespace Squidex.Areas.Api.Controllers.Assets
                             }
                         }
 
+                        try
+                        {
                             using (Profiler.Trace("ResizeUpload"))
                             {
                                 await assetStore.UploadAsync(fileName, destinationStream, overwrite);
                                 destinationStream.Position = 0;
                             }
+                        }
+                        catch (AssetAlreadyExistsException)
+                        {
+                            destinationStream.Position = 0;
+                        }
 
                         await destinationStream.CopyToAsync(bodyStream, ct);
                     }

backend/tests/Squidex.Infrastructure.Tests/Queries/QueryJsonConversionTests.cs

@@ -113,6 +113,14 @@ namespace Squidex.Infrastructure.Queries
             AssertErrors(json, "'notfound' is not a property of 'nested'.");
         }
 
+        [Fact]
+        public void Should_add_error_if_nested_reference_property_does_not_exist()
+        {
+            var json = new { path = "reference.notfound", op = "eq", value = 1 };
+
+            AssertErrors(json, "'notfound' is not a property of 'nested'.");
+        }
+
         public static IEnumerable<object[]> DateTimeTests()
         {
             const string value = "2012-11-10T09:08:07Z";