protected override Task <bool> ReadAsynchronously()
{
switch (this.State)
{
case ODataCollectionReaderState.Start:
return(this.ReadAtStartImplementationAsync());
case ODataCollectionReaderState.CollectionStart:
return(this.ReadAtCollectionStartImplementationAsync());
case ODataCollectionReaderState.Value:
return(this.ReadAtValueImplementationAsync());
case ODataCollectionReaderState.CollectionEnd:
return(this.ReadAtCollectionEndImplementationAsync());
case ODataCollectionReaderState.Exception: // fall through
case ODataCollectionReaderState.Completed:
Debug.Assert(false, "This case should have been caught earlier.");
return(TaskUtils.GetFaultedTask <bool>(new ODataException(Strings.General_InternalError(InternalErrorCodes.ODataCollectionReaderCoreAsync_ReadAsynchronously))));
default:
Debug.Assert(false, "Unsupported collection reader state " + this.State + " detected.");
return(TaskUtils.GetFaultedTask <bool>(new ODataException(Strings.General_InternalError(InternalErrorCodes.ODataCollectionReaderCoreAsync_ReadAsynchronously))));
}
}
protected override Task <bool> ReadAsynchronously()
{
Task <bool> result;
switch (this.State)
{
case ODataReaderState.Start:
result = this.ReadAtStartImplementationAsync();
break;
case ODataReaderState.FeedStart:
result = this.ReadAtFeedStartImplementationAsync();
break;
case ODataReaderState.FeedEnd:
result = this.ReadAtFeedEndImplementationAsync();
break;
case ODataReaderState.EntryStart:
result = TaskUtils.GetTaskForSynchronousOperation(() => this.IncreaseEntryDepth())
.FollowOnSuccessWithTask(t => this.ReadAtEntryStartImplementationAsync());
break;
case ODataReaderState.EntryEnd:
result = TaskUtils.GetTaskForSynchronousOperation(() => this.DecreaseEntryDepth())
.FollowOnSuccessWithTask(t => this.ReadAtEntryEndImplementationAsync());
break;
case ODataReaderState.NavigationLinkStart:
result = this.ReadAtNavigationLinkStartImplementationAsync();
break;
case ODataReaderState.NavigationLinkEnd:
result = this.ReadAtNavigationLinkEndImplementationAsync();
break;
case ODataReaderState.EntityReferenceLink:
result = this.ReadAtEntityReferenceLinkAsync();
break;
case ODataReaderState.Exception: // fall through
case ODataReaderState.Completed:
result = TaskUtils.GetFaultedTask <bool>(new ODataException(Strings.ODataReaderCore_NoReadCallsAllowed(this.State)));
break;
default:
Debug.Assert(false, "Unsupported reader state " + this.State + " detected.");
result = TaskUtils.GetFaultedTask <bool>(new ODataException(Strings.General_InternalError(InternalErrorCodes.ODataReaderCoreAsync_ReadAsynchronously)));
break;
}
return(result.FollowOnSuccessWith(t =>
{
if ((this.State == ODataReaderState.EntryStart || this.State == ODataReaderState.EntryEnd) && this.Item != null)
{
ReaderValidationUtils.ValidateEntry(this.CurrentEntry);
}
return t.Result;
}));
}
