protected bool ReadImplementation()
{
bool flag = false;
switch (this.State)
{
case ODataParameterReaderState.Start:
flag = this.ReadAtStartImplementation();
break;
case ODataParameterReaderState.Value:
case ODataParameterReaderState.Collection:
this.subReaderState = SubReaderState.None;
flag = this.ReadNextParameterImplementation();
break;
case ODataParameterReaderState.Exception:
case ODataParameterReaderState.Completed:
throw new ODataException(Microsoft.Data.OData.Strings.General_InternalError(InternalErrorCodes.ODataParameterReader_ReadImplementation));
default:
throw new ODataException(Microsoft.Data.OData.Strings.General_InternalError(InternalErrorCodes.ODataParameterReader_ReadImplementation));
}
if (this.State != ODataParameterReaderState.Completed)
{
if (this.parametersRead.Contains(this.Name))
{
throw new ODataException(Microsoft.Data.OData.Strings.ODataParameterReaderCore_DuplicateParametersInPayload(this.Name));
}
this.parametersRead.Add(this.Name);
}
return(flag);
}
public override ODataCollectionReader CreateCollectionReader()
{
this.VerifyCanCreateSubReader(ODataParameterReaderState.Collection);
this.subReaderState = SubReaderState.Active;
IEdmTypeReference elementType = ((IEdmCollectionType)this.GetParameterTypeReference(this.Name).Definition).ElementType;
return(this.CreateCollectionReader(elementType));
}
/// <summary>
/// This method creates an <see cref="ODataCollectionReader"/> to read the collection value when the state is ODataParameterReaderState.Collection.
/// </summary>
/// <remarks>
/// When the state is ODataParameterReaderState.Collection, the Name property of the <see cref="ODataParameterReader"/> returns the name of the parameter
/// and the Value property of the <see cref="ODataParameterReader"/> returns null. Calling this method in any other state will cause an ODataException to be thrown.
/// </remarks>
/// <returns>Returns an <see cref="ODataCollectionReader"/> to read the collection value when the state is ODataParameterReaderState.Collection.</returns>
public override ODataCollectionReader CreateCollectionReader()
{
this.VerifyCanCreateSubReader(ODataParameterReaderState.Collection);
this.subReaderState = SubReaderState.Active;
Debug.Assert(this.Name != null, "this.Name != null");
Debug.Assert(this.Value == null, "this.Value == null");
IEdmTypeReference expectedItemTypeReference = ((IEdmCollectionType)this.GetParameterTypeReference(this.Name).Definition).ElementType;
return(this.CreateCollectionReader(expectedItemTypeReference));
}
/// <summary>
/// This method creates an <see cref="ODataReader"/> to read the feed value when the state is ODataParameterReaderState.Feed.
/// </summary>
/// <remarks>
/// When the state is ODataParameterReaderState.Feed, the Name property of the <see cref="ODataParameterReader"/> returns the name of the parameter
/// and the Value property of the <see cref="ODataParameterReader"/> returns null. Calling this method in any other state will cause an ODataException to be thrown.
/// </remarks>
/// <returns>Returns an <see cref="ODataReader"/> to read the feed value when the state is ODataParameterReaderState.Feed.</returns>
public override ODataReader CreateFeedReader()
{
this.VerifyCanCreateSubReader(ODataParameterReaderState.Feed);
this.subReaderState = SubReaderState.Active;
Debug.Assert(this.Name != null, "this.Name != null");
Debug.Assert(this.Value == null, "this.Value == null");
IEdmEntityType expectedEntityType = (IEdmEntityType)((IEdmCollectionType)this.GetParameterTypeReference(this.Name).Definition).ElementType.Definition;
return(this.CreateFeedReader(expectedEntityType));
}
/// <summary>
/// This method notifies the implementer of this interface that the created reader is in Completed state.
/// </summary>
void IODataReaderWriterListener.OnCompleted()
{
Debug.Assert(
this.State == ODataParameterReaderState.Resource ||
this.State == ODataParameterReaderState.ResourceSet ||
this.State == ODataParameterReaderState.Collection,
"OnCompleted called in unexpected state: " + this.State);
Debug.Assert(this.State == ODataParameterReaderState.Exception || this.subReaderState == SubReaderState.Active, "OnCompleted called in unexpected subReaderState: " + this.subReaderState);
this.subReaderState = SubReaderState.Completed;
}
/// <summary>
/// This method creates an <see cref="ODataReader"/> to read the resource value when the state is ODataParameterReaderState.Resource.
/// </summary>
/// <remarks>
/// When the state is ODataParameterReaderState.Resource, the Name property of the <see cref="ODataParameterReader"/> returns the name of the parameter
/// and the Value property of the <see cref="ODataParameterReader"/> returns null. Calling this method in any other state will cause an ODataException to be thrown.
/// </remarks>
/// <returns>Returns an <see cref="ODataReader"/> to read the resource value when the state is ODataParameterReaderState.Resource.</returns>
public override ODataReader CreateResourceReader()
{
this.VerifyCanCreateSubReader(ODataParameterReaderState.Resource);
this.subReaderState = SubReaderState.Active;
Debug.Assert(this.Name != null, "this.Name != null");
Debug.Assert(this.Value == null, "this.Value == null");
IEdmStructuredType expectedResourceType = (IEdmStructuredType)this.GetParameterTypeReference(this.Name).Definition;
return(this.CreateResourceReader(expectedResourceType));
}
/// <summary>
/// This method notifies the implementer of this interface that the created reader is in Completed state.
/// </summary>
void IODataReaderWriterListener.OnCompleted()
{
Debug.Assert(
#if SUPPORT_ENTITY_PARAMETER
this.State == ODataParameterReaderState.Entry ||
this.State == ODataParameterReaderState.Feed ||
#endif
this.State == ODataParameterReaderState.Collection,
"OnCompleted called in unexpected state: " + this.State);
Debug.Assert(this.State == ODataParameterReaderState.Exception || this.subReaderState == SubReaderState.Active, "OnCompleted called in unexpected subReaderState: " + this.subReaderState);
this.subReaderState = SubReaderState.Completed;
}
/// <summary>
/// Called when the a parameter was completed.
/// </summary>
protected void OnParameterCompleted()
{
Debug.Assert(this.State == ODataParameterReaderState.Value || this.subReaderState == SubReaderState.Completed, "this.State == ODataParameterReaderState.Value || this.subReaderState == SubReaderState.Completed");
this.subReaderState = SubReaderState.None;
}
void IODataReaderWriterListener.OnCompleted()
{
this.subReaderState = SubReaderState.Completed;
}
/// <summary>
/// Reads the next <see cref="ODataItem"/> from the message payload.
/// </summary>
/// <returns>true if more items were read; otherwise false.</returns>
protected bool ReadImplementation()
{
bool result = false;
switch (this.State)
{
case ODataParameterReaderState.Start:
result = this.ReadAtStartImplementation();
Debug.Assert(
this.State == ODataParameterReaderState.Value ||
#if SUPPORT_ENTITY_PARAMETER
this.State == ODataParameterReaderState.Entry ||
this.State == ODataParameterReaderState.Feed ||
#endif
this.State == ODataParameterReaderState.Collection ||
this.State == ODataParameterReaderState.Completed,
"ReadAtParameterStartImplementation should transition the state to ODataParameterReaderState.Value, ODataParameterReaderState.Entry, ODataParameterReaderState.Feed, ODataParameterReaderState.Collection or ODataParameterReaderState.Completed. The current state is: " + this.State);
break;
case ODataParameterReaderState.Value:
#if SUPPORT_ENTITY_PARAMETER
case ODataParameterReaderState.Entry:
case ODataParameterReaderState.Feed:
#endif
case ODataParameterReaderState.Collection:
Debug.Assert(this.State == ODataParameterReaderState.Value || this.subReaderState == SubReaderState.Completed, "this.State == ODataParameterReaderState.Value || this.subReaderState == SubReaderState.Completed");
this.subReaderState = SubReaderState.None;
result = this.ReadNextParameterImplementation();
Debug.Assert(
this.State == ODataParameterReaderState.Value ||
#if SUPPORT_ENTITY_PARAMETER
this.State == ODataParameterReaderState.Entry ||
this.State == ODataParameterReaderState.Feed ||
#endif
this.State == ODataParameterReaderState.Collection ||
this.State == ODataParameterReaderState.Completed,
"ReadAtParameterStartImplementation should transition the state to ODataParameterReaderState.Value, ODataParameterReaderState.Entry, ODataParameterReaderState.Feed, ODataParameterReaderState.Collection or ODataParameterReaderState.Completed. The current state is: " + this.State);
break;
case ODataParameterReaderState.Exception: // fall through
case ODataParameterReaderState.Completed:
Debug.Assert(false, "This case should have been caught earlier.");
throw new ODataException(Strings.General_InternalError(InternalErrorCodes.ODataParameterReader_ReadImplementation));
default:
Debug.Assert(false, "Unsupported parameter reader state " + this.State + " detected.");
throw new ODataException(Strings.General_InternalError(InternalErrorCodes.ODataParameterReader_ReadImplementation));
}
if (this.State != ODataParameterReaderState.Completed)
{
Debug.Assert(!string.IsNullOrEmpty(this.Name), "!string.IsNullOrEmpty(this.Name)");
if (this.parametersRead.Contains(this.Name))
{
throw new ODataException(Strings.ODataParameterReaderCore_DuplicateParametersInPayload(this.Name));
}
this.parametersRead.Add(this.Name);
}
return(result);
}