/// <summary>
/// Reads the next <see cref="ODataItem"/> from the message payload.
/// </summary>
/// <returns>true if more items were read; otherwise false.</returns>
private bool ReadImplementation()
{
bool result;
switch (this.State)
{
case ODataReaderState.Start:
result = this.ReadAtStartImplementation();
break;
case ODataReaderState.FeedStart:
result = this.ReadAtFeedStartImplementation();
break;
case ODataReaderState.FeedEnd:
result = this.ReadAtFeedEndImplementation();
break;
case ODataReaderState.EntryStart:
this.IncreaseEntryDepth();
result = this.ReadAtEntryStartImplementation();
break;
case ODataReaderState.EntryEnd:
this.DecreaseEntryDepth();
result = this.ReadAtEntryEndImplementation();
break;
case ODataReaderState.NavigationLinkStart:
result = this.ReadAtNavigationLinkStartImplementation();
break;
case ODataReaderState.NavigationLinkEnd:
result = this.ReadAtNavigationLinkEndImplementation();
break;
case ODataReaderState.EntityReferenceLink:
result = this.ReadAtEntityReferenceLink();
break;
case ODataReaderState.Exception: // fall through
case ODataReaderState.Completed:
throw new ODataException(Strings.ODataReaderCore_NoReadCallsAllowed(this.State));
default:
Debug.Assert(false, "Unsupported reader state " + this.State + " detected.");
throw new ODataException(Strings.General_InternalError(InternalErrorCodes.ODataReaderCore_ReadImplementation));
}
if ((this.State == ODataReaderState.EntryStart || this.State == ODataReaderState.EntryEnd) && this.Item != null)
{
ReaderValidationUtils.ValidateEntry(this.CurrentEntry);
}
return(result);
}
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;
}));
}