序列化代码示例中的无限循环答案

【问题标题】：Endless loop in a code sample on serialization序列化代码示例中的无限循环
【发布时间】：2010-11-24 10:59:21
【问题描述】：

看看下面来自here的代码。
这是关于在 wcf 中序列化时在数据契约（对象模型、对象图、域模型）中保留循环引用。

class ReferencePreservingDataContractSerializerOperationBehavior
      :DataContractSerializerOperationBehavior
    {
        public ReferencePreservingDataContractSerializerOperationBehavior(
          OperationDescription operationDescription)
          : base(operationDescription) { }

        public override XmlObjectSerializer CreateSerializer(
          Type type, string name, string ns, IList<Type> knownTypes)
        {
            return CreateDataContractSerializer(type, name, ns, knownTypes);
        }
 
        private static XmlObjectSerializer CreateDataContractSerializer(
          Type type, string name, string ns, IList<Type> knownTypes)
        {
            return CreateDataContractSerializer(type, name, ns, knownTypes);
        }
 
        public override XmlObjectSerializer CreateSerializer(
          Type type, XmlDictionaryString name, XmlDictionaryString ns,
          IList<Type> knownTypes)
        {
            return new DataContractSerializer(type, name, ns, knownTypes,
                0x7FFF /*maxItemsInObjectGraph*/,
                false/*ignoreExtensionDataObject*/,
                true/*preserveObjectReferences*/,
                null/*dataContractSurrogate*/);
        }
    }

CreateDataContractSerializer 不是在生成无限循环 (stackoverflow) - 因此前面的 CreateSerializer 方法也是如此吗？

private static XmlObjectSerializer CreateDataContractSerializer(
          Type type, string name, string ns, IList<Type> knownTypes)
        {
            return CreateDataContractSerializer(type, name, ns, knownTypes);
        }

现在也许这些方法没有被使用？我在这里错过了什么？

【问题讨论】：

标签： c# wcf recursion circular-reference

【解决方案1】：

确实如此。它有效的事实表明当前仅调用了最后一个重载。由于涉及不同的参数，也许最好放弃静态方法（这没有帮助）：

public override XmlObjectSerializer CreateSerializer(
  Type type, string name, string ns, IList<Type> knownTypes)
{
    return new DataContractSerializer(type, name, ns, knownTypes,
        0x7FFF /*maxItemsInObjectGraph*/,
        false/*ignoreExtensionDataObject*/,
        true/*preserveObjectReferences*/,
        null/*dataContractSurrogate*/);
}

public override XmlObjectSerializer CreateSerializer(
  Type type, XmlDictionaryString name, XmlDictionaryString ns,
  IList<Type> knownTypes)
{
    return new DataContractSerializer(type, name, ns, knownTypes,
        0x7FFF /*maxItemsInObjectGraph*/,
        false/*ignoreExtensionDataObject*/,
        true/*preserveObjectReferences*/,
        null/*dataContractSurrogate*/);
}

【讨论】：