public Expression HandleReference(object value, JsonPath CurrentPath)
{
if (!IsReferenceable(value))
{
return(null);
}
ReferenceInfo refInfo = null;
if (_refs.ContainsKey(value))
{
/*
* This object has already been seen by the serializer so
* determine what to do with it. If its part of the current path
* then its a circular reference and an error needs to be thrown or it should
* be ignored depending on the option. Otherwise write a reference to it
*/
refInfo = _refs[value];
JsonPath refPath = refInfo.Path;
switch (_context.ReferenceWritingType)
{
case SerializationContext.ReferenceOption.WriteIdentifier:
if (!refInfo.CanReference)
{
throw new InvalidOperationException("Can't reference object: " + refPath + " from " + CurrentPath + ", either it is a collection, or it has not been converted yet");
}
return(new ReferenceExpression(refPath));
case SerializationContext.ReferenceOption.IgnoreCircularReferences:
if (CurrentPath.StartsWith(refPath))
{
return(new NullExpression());
}
break;
case SerializationContext.ReferenceOption.ErrorCircularReferences:
if (CurrentPath.StartsWith(refPath))
{
throw new InvalidOperationException("Circular reference detected. Current path: " + CurrentPath + ", reference to: " + refPath);
}
break;
}
}
else
{
refInfo = new ReferenceInfo(CurrentPath);
_refs[value] = refInfo;
}
return(null);
}
public Expression HandleReference(object value, JsonPath CurrentPath)
{
if (!IsReferenceable(value))
return null;
ReferenceInfo refInfo = null;
if (_refs.ContainsKey(value))
{
/*
* This object has already been seen by the serializer so
* determine what to do with it. If its part of the current path
* then its a circular reference and an error needs to be thrown or it should
* be ignored depending on the option. Otherwise write a reference to it
*/
refInfo = _refs[value];
JsonPath refPath = refInfo.Path;
switch (_context.ReferenceWritingType)
{
case SerializationContext.ReferenceOption.WriteIdentifier:
if (!refInfo.CanReference)
throw new InvalidOperationException("Can't reference object: " + refPath + " from " + CurrentPath + ", either it is a collection, or it has not been converted yet");
return new ReferenceExpression(refPath);
case SerializationContext.ReferenceOption.IgnoreCircularReferences:
if (CurrentPath.StartsWith(refPath))
{
return new NullExpression();
}
break;
case SerializationContext.ReferenceOption.ErrorCircularReferences:
if (CurrentPath.StartsWith(refPath))
{
throw new InvalidOperationException("Circular reference detected. Current path: " + CurrentPath + ", reference to: " + refPath);
}
break;
}
}
else
{
refInfo = new ReferenceInfo(CurrentPath);
_refs[value] = refInfo;
}
return null;
}