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Json deserialization error when using getResult

Vote:
 

When calling GetResult I only get a error:

[JsonSerializationException: Unexpected end when deserializing object. Path '', line 1, position 341931.]

See trace at the bottom.

If I use GetContentResult or GetPageResult everything is fine, but the gives unwanted overhead, since all the data wanted already should be indexed in the find base. We tried using a .select, but then we would have to select every field, and we want all of them :)

 

// Code crashing

var query = SearchClient.Instance.Search<NyhetPage>()

.ExcludeDeleted()
.CurrentlyPublished()
.FilterOnReadAccess()
.Take(antall)
.Skip(skip);

var nyheter = query.GetResult();

// NyhetPage, short version, removed all uninteresting code (like Display and comments)
// PageDataBase is essentially EPiServers PageData with some helper functions, but no Properties

public class NyhetPage : PageDataBase
{


[Required]
[Editable(true)]
public virtual XhtmlString LeadParagraph { get; set; }

[Editable(true)]
public virtual XhtmlString Content { get; set; }

[Editable(true)]
[UIHint(UIHint.Image)]
public virtual Url Image { get; set; }

[Editable(true)]
public virtual ContentArea ReadMore { get; set; }

[UIHint("DropDownStyle")]
[DropDown(Settings = new[]{

"Kategori1|Kategori1",
"Kategori2|Kategori2",
"Kategori3|Kategori3"

})]

public virtual string Kategori { get; set; }
}

 

// Trace

[JsonSerializationException: Unexpected end when deserializing object. Path '', line 1, position 341931.]
   Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject, JsonReader reader, JsonObjectContract contract, JsonProperty member, String id) +1997
   Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue) +517
   Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue) +184
   Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent) +791
   Newtonsoft.Json.Serialization.JsonSerializerProxy.DeserializeInternal(JsonReader reader, Type objectType) +75
   Newtonsoft.Json.JsonSerializer.Deserialize(JsonReader reader, Type objectType) +46
   EPiServer.Find.Api.SearchHitConverter.PopulateItemProperty(JsonReader reader, JsonSerializer serializer, Type objectType, Object item) +99
   EPiServer.Find.Api.SearchHitConverter.PopulateProperty(JsonReader reader, JsonSerializer serializer, Type objectType, String propertyName, Object item) +65
   EPiServer.Find.Json.IgnoredPropertiesHandlingConverterBase.ReadJson(JsonReader reader, Type objectType, Object existingValue, JsonSerializer serializer) +425
   Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateList(IWrappedCollection wrappedList, JsonReader reader, JsonArrayContract contract, JsonProperty containerProperty, String id) +1347
   Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateList(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, Object existingValue, String id) +685
   Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue) +233
   Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetPropertyValue(JsonProperty property, JsonConverter propertyConverter, JsonContainerContract containerContract, JsonProperty containerProperty, JsonReader reader, Object target) +597
   Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject, JsonReader reader, JsonObjectContract contract, JsonProperty member, String id) +1669
   Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue) +517
   Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue) +184
   Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetPropertyValue(JsonProperty property, JsonConverter propertyConverter, JsonContainerContract containerContract, JsonProperty containerProperty, JsonReader reader, Object target) +597
   Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject, JsonReader reader, JsonObjectContract contract, JsonProperty member, String id) +1669
   Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue) +517
   Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue) +184
   Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent) +791
   Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType) +1143
   Newtonsoft.Json.JsonSerializer.Deserialize(JsonReader reader, Type objectType) +46
   Newtonsoft.Json.JsonSerializer.Deserialize(JsonReader reader) +127
   EPiServer.Find.Api.Command.GetResponse(IJsonRequest request) +164
   EPiServer.Find.Api.SearchCommand`1.Execute() +391
   EPiServer.Find.Client.Search(SearchRequestBody requestBody, Action`1 commandAction) +212
   EPiServer.Find.SearchExtensions.GetResult(ISearch`1 search) +183
   Business.Søk.Nyhetssøk(Int32 antall, Int32 skip, List`1 kategorier, Boolean faseter) in Business\Søk.cs:46
   NyheterPageController.HentNyheter(Int32 antall, Int32 skip, List`1 kategorier, Boolean hentFasetter) in NyheterPageController.cs:25
   lambda_method(Closure , ControllerBase , Object[] ) +239
   System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +14
   System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +211
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +27
   System.Web.Mvc.Async.<>c__DisplayClass42.<BeginInvokeSynchronousActionMethod>b__41() +28
   System.Web.Mvc.Async.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _) +10
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +57
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) +48
   System.Web.Mvc.Async.<>c__DisplayClass39.<BeginInvokeActionMethodWithFilters>b__33() +57
   System.Web.Mvc.Async.<>c__DisplayClass4f.<InvokeActionMethodFilterAsynchronously>b__49() +223
   System.Web.Mvc.Async.<>c__DisplayClass4f.<InvokeActionMethodFilterAsynchronously>b__49() +223
   System.Web.Mvc.Async.<>c__DisplayClass4f.<InvokeActionMethodFilterAsynchronously>b__49() +223
   System.Web.Mvc.Async.<>c__DisplayClass4f.<InvokeActionMethodFilterAsynchronously>b__49() +223
   System.Web.Mvc.Async.<>c__DisplayClass4f.<InvokeActionMethodFilterAsynchronously>b__49() +223
   System.Web.Mvc.Async.<>c__DisplayClass37.<BeginInvokeActionMethodWithFilters>b__36(IAsyncResult asyncResult) +10
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +57
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) +48
   System.Web.Mvc.Async.<>c__DisplayClass2a.<BeginInvokeAction>b__20() +24
   System.Web.Mvc.Async.<>c__DisplayClass25.<BeginInvokeAction>b__22(IAsyncResult asyncResult) +102
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +57
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +43
   System.Web.Mvc.<>c__DisplayClass1d.<BeginExecuteCore>b__18(IAsyncResult asyncResult) +14
   System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +23
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62
   System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +57
   System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +23
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62
   System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +47
   System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +10
   System.Web.Mvc.<>c__DisplayClass8.<BeginProcessRequest>b__3(IAsyncResult asyncResult) +25
   System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +23
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +47
   System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +9628700
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155
#71827
May 30, 2013 10:06
Vote:
 

Is it the ContentArea making trouble?

#71828
May 30, 2013 10:08
Vote:
 

Hi,

Fetching entire PageData objects from the Find index is "unsupported" as:

a) Deserializing PageData from JSON is, as you're experiencing, hard.

b) Retrieving a PageData object from a source other than EPiServer's API would be risky business. Imagine that you pass such an object to a method in which some other developer later on decides to clone it, modify it and save it.

c) Retrieving all of the content from the index means passing quite a lot of data over the wire. By using GetContentResult all that's passed is the page's ids and since the pages are likely to be in the cache retrieving them from the CMS's API doesn't add much overhead.

So, the recommendation is to either use GetContentResult or use a projection using Select when you don't need the full object.

#71830
May 30, 2013 10:20
Vote:
 

Thanks for a logical and quick answer!


(Love your blog!)

#71831
May 30, 2013 10:27
This topic was created over six months ago and has been resolved. If you have a similar question, please create a new topic and refer to this one.
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