WCF反序列化失去了子集合-Java 学习之路

几天来我一直在寻找以下问题的答案，到目前为止没有运气，任何帮助都非常感谢 .

Disclaimer ：WCF和EntityFramework对我来说是新概念，但.NET，c＃，Web服务，对象关系映射概念当然不是 .

我使用WCF服务继承了一个带有Client应用程序的应用程序，以检索并保存一个“Matter”对象，该对象包含与“CaseNotesLog”对象的1对多关系 .

客户端可以使用0,1或多个子CaseNotesLog对象成功检索某些事项，它还可以成功保存具有添加，更新或删除的CaseNotesLog对象的事项 .

到目前为止一切都那么好，但似乎有一组Matters，子CaseNotesLog对象可以成功读取但是即使它们根本没有被改变也无法保存 .

本质上，当保存Matter对象时，它看起来像WCF上的反序列化过程会丢失子CaseNotesLog条目 .

澄清：

阅读
a Matter记录在数据库中有1个CaseNotesLog子记录，
这已成功转换为EntityFramework Matter对象，在服务器上具有子CaseNotesLog对象
这在WCF服务中成功序列化/反序列化，并在客户端使用子CaseNotesLog正确填充Matter对象 .
保存
客户端的Matter对象与子CaseNotesLog对象"leaves"客户端应用程序 .
这是序列化的，以便将WCF服务传递回服务器 .
查看跟踪日志记录此序列化包含子CaseNotesLog .
此对象在服务器端反序列化
通过将trace语句添加到entityframework Matter对象的Setter代码中，我可以观察到CaseNotesLog子项被正确放入父Matter中 .
BUT as soon as the Getter functionality is called the collection is empty

就像在其他地方重置RelationshipManager集合一样 .

最终结果是带有子CaseNotesLog对象的Matter对象在客户端留下了我的代码，但是当我检查服务器端对象的状态时，看起来它正在序列化/反序列化 . 儿童记录已经消失 .

要检查我是否在entityframework类中添加了一些代码，以便独立计算子集合的大小 . 设置CaseNotesLog集合时，它在Set操作期间设置为1，并且在Get期间检索CaseNotesLog集合时它保持为1，即使集合已清空 .

添加到混乱这不适用于所有事项，一些似乎工作别人不这似乎不适用于所有类型的子对象其他集似乎工作 .

除其他方法外，WCF服务实现以下内容：

[ServiceContract]
public interface IMattersService
{
    ...
    [OperationContract]
    Matter ReadMatter(int matterID);
    ...
    [OperationContract]
    void SaveMatter(Matter matter);
    ...
    }
}

它实现如下：

public class MattersService : IMattersService
{

   ...
   public Matter ReadMatter(int matterID)
   {
       using (var repo = new MatterRepository())
       {
           try
           {
               return repo.ReadMatter(matterID);
           }
           catch (Exception ex)
           {
               Logger.Write(ex, "Error", 0);
               throw;
           }
       }
   }
   ...
   public void SaveMatter(Matter matter)
   {
       Trace.WriteLine(matter.CaseNotesLogs.Count);
       using (var repo = new MatterRepository())
       {
           try
           {
               repo.SaveMatter(matter);
           }
           catch (Exception ex)
           {
               Logger.Write(ex, "Error", 0);
               throw;
           }
       }
   }
   ...
}

Matter是一个EntityFramework生成的类：

/// <summary>
/// No Metadata Documentation available.
/// </summary>
[EdmEntityTypeAttribute(NamespaceName="EDDSolutionsLtd.Services.Data", Name="Matter")]
[Serializable()]
[DataContractAttribute(IsReference=true)]
public partial class Matter : EntityObject
{
    ...
    /// <summary>
    /// No Metadata Documentation available.
    /// </summary>
    [XmlIgnoreAttribute()]
    [SoapIgnoreAttribute()]
    [DataMemberAttribute()]
    [EdmRelationshipNavigationPropertyAttribute("EDDSolutionsLtd.Services.Data", "MatterCaseNotesLog", "CaseNotesLog")]
    public EntityCollection<CaseNotesLog> CaseNotesLogs
    {
        get
        {
            return ((IEntityWithRelationships)this).RelationshipManager.GetRelatedCollection<CaseNotesLog>("EDDSolutionsLtd.Services.Data.MatterCaseNotesLog", "CaseNotesLog");
        }
        set
        {
            if ((value != null))
            {
                ((IEntityWithRelationships)this).RelationshipManager.InitializeRelatedCollection<CaseNotesLog>("EDDSolutionsLtd.Services.Data.MatterCaseNotesLog", "CaseNotesLog", value);
            }
        }
    }
    ...
}

错误的版本我添加了一些日志记录：

public int CheckCaseNotesLogsCount { get; set; }
public EntityCollection<CaseNotesLog> CheckCaseNotesLogs { get; set; }
/// <summary>
/// No Metadata Documentation available.
/// </summary>
[XmlIgnoreAttribute()]
[SoapIgnoreAttribute()]
[DataMemberAttribute()]
[EdmRelationshipNavigationPropertyAttribute("EDDSolutionsLtd.Services.Data", "MatterCaseNotesLog", "CaseNotesLog")]
public EntityCollection<CaseNotesLog> CaseNotesLogs
{
    get
    {
        if (CheckCaseNotesLogs != null)
        {
            Trace.WriteLine("GET ACTUAL CheckCaseNotesLogs[" + CheckCaseNotesLogs.Count + "]");
        }
        Trace.WriteLine("GET ACTUAL CheckCaseNotesLogsCount[" + CheckCaseNotesLogsCount + "]");
        StackTrace st = new StackTrace();
        int i = ((IEntityWithRelationships)this).RelationshipManager.GetRelatedCollection<CaseNotesLog>("EDDSolutionsLtd.Services.Data.MatterCaseNotesLog", "CaseNotesLog").Count;
        Trace.WriteLine("GET ACTUAL value[" + i + "]");
        Trace.WriteLine(st.ToString());
        return ((IEntityWithRelationships)this).RelationshipManager.GetRelatedCollection<CaseNotesLog>("EDDSolutionsLtd.Services.Data.MatterCaseNotesLog", "CaseNotesLog");
    }
    set
    {
        if ((value != null))
        {
            CheckCaseNotesLogs = value;
            CheckCaseNotesLogsCount = value.Count;
            Trace.WriteLine("SET ACTUAL value[" + value.Count + "]");
            ((IEntityWithRelationships)this).RelationshipManager.InitializeRelatedCollection<CaseNotesLog>("EDDSolutionsLtd.Services.Data.MatterCaseNotesLog", "CaseNotesLog", value);
            Trace.WriteLine("SET ACTUAL Property value[" + this.CaseNotesLogs.Count + "]");
        }
        else
        {
           Trace.WriteLine("SET NULL Value");
        }
    }
}

这是Wcf服务收到的Soap消息的片段，显示存在子CaseNotesLog记录 .

<E2ETraceEvent xmlns="http://schemas.microsoft.com/2004/06/E2ETraceEvent">

  <System xmlns="http://schemas.microsoft.com/2004/06/windows/eventlog/system">

    <EventID>0</EventID>
    <Type>3</Type>
    <SubType Name="Information">0</SubType>
    <Level>8</Level>
    <TimeCreated SystemTime="2011-05-19T22:49:34.7968750Z" />
    <Source Name="System.ServiceModel.MessageLogging" />
    <Correlation ActivityID="{fa25d214-04e9-4b16-8ae8-3de7b9a12bc6}" />
    <Execution ProcessName="WebDev.WebServer40" ProcessID="2332" ThreadID="13" />
    <Channel />
    <Computer>EDD-MERCURY</Computer>
  </System>
  <ApplicationData>
    <TraceData>
      <DataItem>
        <MessageLogTraceRecord Time="2011-05-19T23:49:34.7812500+01:00"
        Source="ServiceLevelReceiveRequest"
        Type="System.ServiceModel.Channels.BufferedMessage"
            xmlns="http://schemas.microsoft.com/2004/06/ServiceModel/Management/MessageTrace">

          <HttpRequest>
            <Method>POST</Method>
            <QueryString></QueryString>
            <WebHeaders>
              <Content-Length>142631</Content-Length>
              <Content-Type>application/soap+xml;
              charset=utf-8</Content-Type>
              <Expect>100-continue</Expect>
              <Host>localhost:58080</Host>
              <VsDebuggerCausalityData>
              uIDPo7kHl/h9zQNAkghvTvB5/u8AAAAAuoDOged1MUm+UmudC0H6u3k/74R6jUpIn/o2sS4KNxYACQAA</VsDebuggerCausalityData>
            </WebHeaders>
          </HttpRequest>
          <s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope"
          xmlns:a="http://www.w3.org/2005/08/addressing">
            <s:Header>
              <a:Action s:mustUnderstand="1">
              http://tempuri.org/IMattersService/SaveMatter</a:Action>
              <a:MessageID>
              urn:uuid:f1d751a7-1012-4268-b7da-87a12cf6d14f</a:MessageID>
              <ActivityId CorrelationId="4f53460f-8880-4b6e-aa66-557fa90d4ae3"
              xmlns="http://schemas.microsoft.com/2004/09/ServiceModel/Diagnostics">
              fa25d214-04e9-4b16-8ae8-3de7b9a12bc6</ActivityId>
              <a:ReplyTo>
                <a:Address>
                http://www.w3.org/2005/08/addressing/anonymous</a:Address>
              </a:ReplyTo>
              <a:To s:mustUnderstand="1">
              http://localhost:58080/MattersService.svc</a:To>
            </s:Header>
            <s:Body>
              <SaveMatter xmlns="http://tempuri.org/">
                <matter z:Id="i1"
                xmlns:b="http://schemas.datacontract.org/2004/07/EDDSolutionsLtd.Services.Data"
                xmlns:i="http://www.w3.org/2001/XMLSchema-instance"
                xmlns:z="http://schemas.microsoft.com/2003/10/Serialization/">

                  <EntityKey z:Id="i2"
                      xmlns="http://schemas.datacontract.org/2004/07/System.Data.Objects.DataClasses"
                  xmlns:c="http://schemas.datacontract.org/2004/07/System.Data">

                    <c:EntityContainerName>
                    EDDSolutionsLtdEntities</c:EntityContainerName>
                    <c:EntityKeyValues>
                      <c:EntityKeyMember>
                        <c:Key>ID</c:Key>
                        <c:Value i:type="d:int"
                        xmlns:d="http://www.w3.org/2001/XMLSchema">
                        180</c:Value>
                      </c:EntityKeyMember>
                    </c:EntityKeyValues>
                    <c:EntitySetName>Matters</c:EntitySetName>
                  </EntityKey>
                  <b:AllRecordsReceivedDate i:nil="true">
                  </b:AllRecordsReceivedDate>
                  <b:BeginClaimDate i:nil="true">
                  </b:BeginClaimDate>

                  ...

                  <b:CaseEmailLogs></b:CaseEmailLogs>
                  <b:CaseFileLogs></b:CaseFileLogs>
                  <b:CaseNotesLogs>
                    <b:CaseNotesLog z:Id="i3">
                      <EntityKey z:Id="i4"
                          xmlns="http://schemas.datacontract.org/2004/07/System.Data.Objects.DataClasses"
                      xmlns:c="http://schemas.datacontract.org/2004/07/System.Data">

                        <c:EntityContainerName>
                        EDDSolutionsLtdEntities</c:EntityContainerName>
                        <c:EntityKeyValues>
                          <c:EntityKeyMember>
                            <c:Key>ID</c:Key>
                            <c:Value i:type="d:int"
                            xmlns:d="http://www.w3.org/2001/XMLSchema">
                            281</c:Value>
                          </c:EntityKeyMember>
                        </c:EntityKeyValues>
                        <c:EntitySetName>
                        CaseNotesLogs</c:EntitySetName>
                      </EntityKey>
                      <b:ActivityDate>
                      2011-05-18T00:00:00</b:ActivityDate>
                      <b:Body i:nil="true"></b:Body>
                      <b:Comment>3</b:Comment>
                      <b:ContactID>608</b:ContactID>
                      <b:CreatedBy>mminns</b:CreatedBy>
                      <b:CreatedOn>
                      2011-05-19T15:25:03.923</b:CreatedOn>
                      <b:ID>281</b:ID>
                      <b:MatterId>180</b:MatterId>
                      <b:ModifiedBy>mminns</b:ModifiedBy>
                      <b:ModifiedOn>
                      2011-05-19T15:25:03.923</b:ModifiedOn>
                      <b:OriginalContactID>0</b:OriginalContactID>
                      <b:Outcome>Unknown</b:Outcome>
                      <b:Subject>1</b:Subject>
                    </b:CaseNotesLog>
                  </b:CaseNotesLogs>

                  ...

                </matter>
              </SaveMatter>
            </s:Body>
          </s:Envelope>
        </MessageLogTraceRecord>
      </DataItem>
    </TraceData>
  </ApplicationData>
</E2ETraceEvent>

1 回答

0

您可以为数据协定标记此属性：System.Runtime.Serialization.DataContractAttribute（IsReference = true）]

回复于 2024-04-29T18:05:57+08:00

WCF反序列化失去了子集合

1 回答

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