private void SetState(BatchWriterState newState)
{
this.InterceptException(() => this.ValidateTransition(newState));
switch (newState)
{
case BatchWriterState.ChangeSetStarted:
this.changeSetBoundary = ODataBatchWriterUtils.CreateChangeSetBoundary(this.rawOutputContext.WritingResponse);
break;
case BatchWriterState.ChangeSetCompleted:
this.changeSetBoundary = null;
break;
}
this.state = newState;
}
/// <summary>
/// Sets a new writer state; verifies that the transition from the current state into new state is valid.
/// </summary>
/// <param name="newState">The writer state to transition into.</param>
private void SetState(BatchWriterState newState)
{
this.InterceptException(() => this.ValidateTransition(newState));
switch (newState)
{
case BatchWriterState.BatchStarted:
Debug.Assert(!this.batchStartBoundaryWritten, "The batch boundary must not be written before calling WriteStartBatch.");
break;
case BatchWriterState.ChangeSetStarted:
Debug.Assert(this.changeSetBoundary == null, "this.changeSetBoundary == null");
this.changeSetBoundary = ODataBatchWriterUtils.CreateChangeSetBoundary(this.writingResponse);
break;
case BatchWriterState.ChangeSetCompleted:
Debug.Assert(this.changeSetBoundary != null, "this.changeSetBoundary != null");
this.changeSetBoundary = null;
break;
}
this.state = newState;
}
private void ValidateTransition(BatchWriterState newState)
{
if (IsErrorState(this.state) || !IsErrorState(newState))
{
if ((newState == BatchWriterState.ChangeSetStarted) && (this.changeSetBoundary != null))
{
throw new ODataException(Strings.ODataBatchWriter_CannotStartChangeSetWithActiveChangeSet);
}
if ((newState == BatchWriterState.ChangeSetCompleted) && (this.changeSetBoundary == null))
{
throw new ODataException(Strings.ODataBatchWriter_CannotCompleteChangeSetWithoutActiveChangeSet);
}
if ((newState == BatchWriterState.BatchCompleted) && (this.changeSetBoundary != null))
{
throw new ODataException(Strings.ODataBatchWriter_CannotCompleteBatchWithActiveChangeSet);
}
switch (this.state)
{
case BatchWriterState.Start:
if (newState != BatchWriterState.BatchStarted)
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromStart);
}
break;
case BatchWriterState.BatchStarted:
if (((newState != BatchWriterState.ChangeSetStarted) && (newState != BatchWriterState.OperationCreated)) && (newState != BatchWriterState.BatchCompleted))
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromBatchStarted);
}
break;
case BatchWriterState.ChangeSetStarted:
if ((newState != BatchWriterState.OperationCreated) && (newState != BatchWriterState.ChangeSetCompleted))
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromChangeSetStarted);
}
break;
case BatchWriterState.OperationCreated:
if ((((newState != BatchWriterState.OperationCreated) && (newState != BatchWriterState.OperationStreamRequested)) && ((newState != BatchWriterState.ChangeSetStarted) && (newState != BatchWriterState.ChangeSetCompleted))) && (newState != BatchWriterState.BatchCompleted))
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromOperationCreated);
}
break;
case BatchWriterState.OperationStreamRequested:
if (newState != BatchWriterState.OperationStreamDisposed)
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromOperationContentStreamRequested);
}
break;
case BatchWriterState.OperationStreamDisposed:
if (((newState != BatchWriterState.OperationCreated) && (newState != BatchWriterState.ChangeSetStarted)) && ((newState != BatchWriterState.ChangeSetCompleted) && (newState != BatchWriterState.BatchCompleted)))
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromOperationContentStreamDisposed);
}
break;
case BatchWriterState.ChangeSetCompleted:
if (((newState != BatchWriterState.BatchCompleted) && (newState != BatchWriterState.ChangeSetStarted)) && (newState != BatchWriterState.OperationCreated))
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromChangeSetCompleted);
}
break;
case BatchWriterState.BatchCompleted:
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromBatchCompleted);
case BatchWriterState.Error:
if (newState != BatchWriterState.Error)
{
throw new ODataException(Strings.ODataWriterCore_InvalidTransitionFromError(this.state.ToString(), newState.ToString()));
}
break;
default:
throw new ODataException(Strings.General_InternalError(InternalErrorCodes.ODataBatchWriter_ValidateTransition_UnreachableCodePath));
}
}
}
private void SetState(BatchWriterState newState)
{
this.InterceptException(() => this.ValidateTransition(newState));
switch (newState)
{
case BatchWriterState.ChangeSetStarted:
this.changeSetBoundary = ODataBatchWriterUtils.CreateChangeSetBoundary(this.rawOutputContext.WritingResponse);
break;
case BatchWriterState.ChangeSetCompleted:
this.changeSetBoundary = null;
break;
}
this.state = newState;
}
private static bool IsErrorState(BatchWriterState state)
{
return (state == BatchWriterState.Error);
}
private void ValidateTransition(BatchWriterState newState)
{
if (IsErrorState(this.state) || !IsErrorState(newState))
{
if ((newState == BatchWriterState.ChangeSetStarted) && (this.changeSetBoundary != null))
{
throw new ODataException(Strings.ODataBatchWriter_CannotStartChangeSetWithActiveChangeSet);
}
if ((newState == BatchWriterState.ChangeSetCompleted) && (this.changeSetBoundary == null))
{
throw new ODataException(Strings.ODataBatchWriter_CannotCompleteChangeSetWithoutActiveChangeSet);
}
if ((newState == BatchWriterState.BatchCompleted) && (this.changeSetBoundary != null))
{
throw new ODataException(Strings.ODataBatchWriter_CannotCompleteBatchWithActiveChangeSet);
}
switch (this.state)
{
case BatchWriterState.Start:
if (newState != BatchWriterState.BatchStarted)
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromStart);
}
break;
case BatchWriterState.BatchStarted:
if (((newState != BatchWriterState.ChangeSetStarted) && (newState != BatchWriterState.OperationCreated)) && (newState != BatchWriterState.BatchCompleted))
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromBatchStarted);
}
break;
case BatchWriterState.ChangeSetStarted:
if ((newState != BatchWriterState.OperationCreated) && (newState != BatchWriterState.ChangeSetCompleted))
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromChangeSetStarted);
}
break;
case BatchWriterState.OperationCreated:
if ((((newState != BatchWriterState.OperationCreated) && (newState != BatchWriterState.OperationStreamRequested)) && ((newState != BatchWriterState.ChangeSetStarted) && (newState != BatchWriterState.ChangeSetCompleted))) && (newState != BatchWriterState.BatchCompleted))
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromOperationCreated);
}
break;
case BatchWriterState.OperationStreamRequested:
if (newState != BatchWriterState.OperationStreamDisposed)
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromOperationContentStreamRequested);
}
break;
case BatchWriterState.OperationStreamDisposed:
if (((newState != BatchWriterState.OperationCreated) && (newState != BatchWriterState.ChangeSetStarted)) && ((newState != BatchWriterState.ChangeSetCompleted) && (newState != BatchWriterState.BatchCompleted)))
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromOperationContentStreamDisposed);
}
break;
case BatchWriterState.ChangeSetCompleted:
if (((newState != BatchWriterState.BatchCompleted) && (newState != BatchWriterState.ChangeSetStarted)) && (newState != BatchWriterState.OperationCreated))
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromChangeSetCompleted);
}
break;
case BatchWriterState.BatchCompleted:
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromBatchCompleted);
case BatchWriterState.Error:
if (newState != BatchWriterState.Error)
{
throw new ODataException(Strings.ODataWriterCore_InvalidTransitionFromError(this.state.ToString(), newState.ToString()));
}
break;
default:
throw new ODataException(Strings.General_InternalError(InternalErrorCodes.ODataBatchWriter_ValidateTransition_UnreachableCodePath));
}
}
}
private static bool IsErrorState(BatchWriterState state)
{
return(state == BatchWriterState.Error);
}
private void ValidateTransition(BatchWriterState newState)
{
if (!IsErrorState(this.state) && IsErrorState(newState))
{
// we can always transition into an error state if we are not already in an error state
return;
}
// make sure that we are not starting a changeset when one is already active
if (newState == BatchWriterState.ChangeSetStarted)
{
if (this.changeSetBoundary != null)
{
throw new ODataException(Strings.ODataBatchWriter_CannotStartChangeSetWithActiveChangeSet);
}
}
// make sure that we are not completing a changeset without an active changeset
if (newState == BatchWriterState.ChangeSetCompleted)
{
if (this.changeSetBoundary == null)
{
throw new ODataException(Strings.ODataBatchWriter_CannotCompleteChangeSetWithoutActiveChangeSet);
}
}
// make sure that we are not completing a batch while a changeset is still active
if (newState == BatchWriterState.BatchCompleted)
{
if (this.changeSetBoundary != null)
{
throw new ODataException(Strings.ODataBatchWriter_CannotCompleteBatchWithActiveChangeSet);
}
}
switch (this.state)
{
case BatchWriterState.Start:
if (newState != BatchWriterState.BatchStarted)
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromStart);
}
break;
case BatchWriterState.BatchStarted:
if (newState != BatchWriterState.ChangeSetStarted && newState != BatchWriterState.OperationCreated && newState != BatchWriterState.BatchCompleted)
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromBatchStarted);
}
break;
case BatchWriterState.ChangeSetStarted:
if (newState != BatchWriterState.OperationCreated && newState != BatchWriterState.ChangeSetCompleted)
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromChangeSetStarted);
}
break;
case BatchWriterState.OperationCreated:
if (newState != BatchWriterState.OperationCreated &&
newState != BatchWriterState.OperationStreamRequested &&
newState != BatchWriterState.ChangeSetStarted &&
newState != BatchWriterState.ChangeSetCompleted &&
newState != BatchWriterState.BatchCompleted)
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromOperationCreated);
}
Debug.Assert(newState != BatchWriterState.OperationStreamDisposed, "newState != BatchWriterState.OperationStreamDisposed");
break;
case BatchWriterState.OperationStreamRequested:
if (newState != BatchWriterState.OperationStreamDisposed)
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromOperationContentStreamRequested);
}
break;
case BatchWriterState.OperationStreamDisposed:
if (newState != BatchWriterState.OperationCreated &&
newState != BatchWriterState.ChangeSetStarted &&
newState != BatchWriterState.ChangeSetCompleted &&
newState != BatchWriterState.BatchCompleted)
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromOperationContentStreamDisposed);
}
break;
case BatchWriterState.ChangeSetCompleted:
if (newState != BatchWriterState.BatchCompleted &&
newState != BatchWriterState.ChangeSetStarted &&
newState != BatchWriterState.OperationCreated)
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromChangeSetCompleted);
}
break;
case BatchWriterState.BatchCompleted:
// no more state transitions should happen once in completed state
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromBatchCompleted);
case BatchWriterState.Error:
if (newState != BatchWriterState.Error)
{
// No more state transitions once we are in error state except for the fatal error
throw new ODataException(Strings.ODataWriterCore_InvalidTransitionFromError(this.state.ToString(), newState.ToString()));
}
break;
default:
throw new ODataException(Strings.General_InternalError(InternalErrorCodes.ODataBatchWriter_ValidateTransition_UnreachableCodePath));
}
}
/// <summary>
/// Sets a new writer state; verifies that the transition from the current state into new state is valid.
/// </summary>
/// <param name="newState">The writer state to transition into.</param>
private void SetState(BatchWriterState newState)
{
this.InterceptException(() => this.ValidateTransition(newState));
switch (newState)
{
case BatchWriterState.BatchStarted:
Debug.Assert(!this.batchStartBoundaryWritten, "The batch boundary must not be written before calling WriteStartBatch.");
break;
case BatchWriterState.ChangeSetStarted:
Debug.Assert(this.changeSetBoundary == null, "this.changeSetBoundary == null");
this.changeSetBoundary = ODataBatchWriterUtils.CreateChangeSetBoundary(this.rawOutputContext.WritingResponse);
break;
case BatchWriterState.ChangeSetCompleted:
Debug.Assert(this.changeSetBoundary != null, "this.changeSetBoundary != null");
this.changeSetBoundary = null;
break;
}
this.state = newState;
}
private void ValidateTransition(BatchWriterState newState)
{
if (!IsErrorState(this.state) && IsErrorState(newState))
{
// we can always transition into an error state if we are not already in an error state
return;
}
// make sure that we are not starting a changeset when one is already active
if (newState == BatchWriterState.ChangeSetStarted)
{
if (this.changeSetBoundary != null)
{
throw new ODataException(Strings.ODataBatchWriter_CannotStartChangeSetWithActiveChangeSet);
}
}
// make sure that we are not completing a changeset without an active changeset
if (newState == BatchWriterState.ChangeSetCompleted)
{
if (this.changeSetBoundary == null)
{
throw new ODataException(Strings.ODataBatchWriter_CannotCompleteChangeSetWithoutActiveChangeSet);
}
}
// make sure that we are not completing a batch while a changeset is still active
if (newState == BatchWriterState.BatchCompleted)
{
if (this.changeSetBoundary != null)
{
throw new ODataException(Strings.ODataBatchWriter_CannotCompleteBatchWithActiveChangeSet);
}
}
switch (this.state)
{
case BatchWriterState.Start:
if (newState != BatchWriterState.BatchStarted)
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromStart);
}
break;
case BatchWriterState.BatchStarted:
if (newState != BatchWriterState.ChangeSetStarted && newState != BatchWriterState.OperationCreated && newState != BatchWriterState.BatchCompleted)
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromBatchStarted);
}
break;
case BatchWriterState.ChangeSetStarted:
if (newState != BatchWriterState.OperationCreated && newState != BatchWriterState.ChangeSetCompleted)
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromChangeSetStarted);
}
break;
case BatchWriterState.OperationCreated:
if (newState != BatchWriterState.OperationCreated &&
newState != BatchWriterState.OperationStreamRequested &&
newState != BatchWriterState.ChangeSetStarted &&
newState != BatchWriterState.ChangeSetCompleted &&
newState != BatchWriterState.BatchCompleted)
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromOperationCreated);
}
Debug.Assert(newState != BatchWriterState.OperationStreamDisposed, "newState != BatchWriterState.OperationStreamDisposed");
break;
case BatchWriterState.OperationStreamRequested:
if (newState != BatchWriterState.OperationStreamDisposed)
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromOperationContentStreamRequested);
}
break;
case BatchWriterState.OperationStreamDisposed:
if (newState != BatchWriterState.OperationCreated &&
newState != BatchWriterState.ChangeSetStarted &&
newState != BatchWriterState.ChangeSetCompleted &&
newState != BatchWriterState.BatchCompleted)
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromOperationContentStreamDisposed);
}
break;
case BatchWriterState.ChangeSetCompleted:
if (newState != BatchWriterState.BatchCompleted &&
newState != BatchWriterState.ChangeSetStarted &&
newState != BatchWriterState.OperationCreated)
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromChangeSetCompleted);
}
break;
case BatchWriterState.BatchCompleted:
// no more state transitions should happen once in completed state
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromBatchCompleted);
case BatchWriterState.FatalExceptionThrown:
if (newState != BatchWriterState.FatalExceptionThrown)
{
throw new ODataException(Strings.ODataBatchWriter_InvalidTransitionFromFatalExceptionThrown);
}
break;
default:
throw new ODataException(Strings.General_InternalError(InternalErrorCodes.ODataBatchWriter_ValidateTransition_UnreachableCodePath));
}
}
/// <summary>
/// Determines whether a given writer state is considered an error state.
/// </summary>
/// <param name="state">The writer state to check.</param>
/// <returns>True if the writer state is an error state; otherwise false.</returns>
private static bool IsErrorState(BatchWriterState state)
{
return(state == BatchWriterState.FatalExceptionThrown);
}
/// <summary>
/// Determines whether a given writer state is considered an error state.
/// </summary>
/// <param name="state">The writer state to check.</param>
/// <returns>True if the writer state is an error state; otherwise false.</returns>
private static bool IsErrorState(BatchWriterState state)
{
return state == BatchWriterState.FatalExceptionThrown;
}
