ClearCanvas.ImageServer.Services.WorkQueue.CompressStudy.CompressStudyItemProcessor.ProcessItem C# (CSharp) Method

		protected override void ProcessItem(Model.WorkQueue item)
		{
			LoadUids(item);

			if (WorkQueueUidList.Count == 0)
			{
				// No UIDs associated with the WorkQueue item.  Set the status back to idle
				PostProcessing(item,
				               WorkQueueProcessorStatus.Idle,
				               WorkQueueProcessorDatabaseUpdate.ResetQueueState);
				return;
			}


			XmlElement element = item.Data.DocumentElement;

			string syntax = element.Attributes["syntax"].Value;

			TransferSyntax compressSyntax = TransferSyntax.GetTransferSyntax(syntax);
			if (compressSyntax == null)
			{
				item.FailureDescription =
					String.Format("Invalid transfer syntax in compression WorkQueue item: {0}", element.Attributes["syntax"].Value);
				Platform.Log(LogLevel.Error, "Error with work queue item {0}: {1}", item.GetKey(), item.FailureDescription);
				base.PostProcessingFailure(item, WorkQueueProcessorFailureType.Fatal);
				return;
			}

			if (Study == null)
			{
				item.FailureDescription =
					String.Format("Compression item does not have a linked Study record");
				Platform.Log(LogLevel.Error, "Error with work queue item {0}: {1}", item.GetKey(), item.FailureDescription);
				base.PostProcessingFailure(item, WorkQueueProcessorFailureType.Fatal);
				return;
			}

			Platform.Log(LogLevel.Info,
			             "Compressing study {0} for Patient {1} (PatientId:{2} A#:{3}) on partition {4} to {5}",
			             Study.StudyInstanceUid, Study.PatientsName, Study.PatientId,
			             Study.AccessionNumber, ServerPartition.Description, compressSyntax.Name);

			IDicomCodecFactory[] codecs = DicomCodecRegistry.GetCodecFactories();
			IDicomCodecFactory theCodecFactory = null;
			foreach (IDicomCodecFactory codec in codecs)
				if (codec.CodecTransferSyntax.Equals(compressSyntax))
				{
					theCodecFactory = codec;
					break;
				}

			if (theCodecFactory == null)
			{
				item.FailureDescription = String.Format("Unable to find codec for compression: {0}", compressSyntax.Name);
				Platform.Log(LogLevel.Error, "Error with work queue item {0}: {1}", item.GetKey(), item.FailureDescription);
				base.PostProcessingFailure(item, WorkQueueProcessorFailureType.Fatal);
				return;
			}

			if (!ProcessUidList(item, theCodecFactory))
				PostProcessingFailure(item, WorkQueueProcessorFailureType.NonFatal);
			else
			{
				Platform.Log(LogLevel.Info,
				             "Completed Compressing study {0} for Patient {1} (PatientId:{2} A#:{3}) on partition {4} to {5}",
				             Study.StudyInstanceUid, Study.PatientsName, Study.PatientId,
				             Study.AccessionNumber, ServerPartition.Description, compressSyntax.Name);

				// Save a StudyHistory Record
				SaveStudyHistory(compressSyntax.UidString);

				if (compressSyntax.LossyCompressed)
					UpdateStudyStatus(StorageLocation, StudyStatusEnum.OnlineLossy, compressSyntax);
				else
					UpdateStudyStatus(StorageLocation, StudyStatusEnum.OnlineLossless, compressSyntax);

				PostProcessing(item,
				               WorkQueueProcessorStatus.Pending,
				               WorkQueueProcessorDatabaseUpdate.None); // batch processed, not complete
			}
		}