control so that if a full batch is set as WIP to first station it is not...

control so that if a full batch is set as WIP to first station it is not created (source will do it anyway)

dream/plugins/Batches/BatchesWIPShort.py

@@ -171,6 +171,7 @@ class BatchesWIPShort(plugin.InputPreparationPlugin):
     def createSubBatch(self,data,stationId,parentBatchId,parentBatchName,subBatchId,numberOfUnits,
                         unitsToProcess=0,receiver=None):
 #         print 'creating sub-batch',stationId,parentBatchId,receiver
+        if stationId:
             data['graph']['node'][stationId]['wip'].insert(0,{
                   "_class": 'Dream.SubBatch',
                   "id": parentBatchId+'_SB_'+str(subBatchId)+'_wip', 
@@ -186,6 +187,7 @@ class BatchesWIPShort(plugin.InputPreparationPlugin):
     # creates a batch in a station
     def createBatch(self,data,stationId,batchId,batchName,numberOfUnits,unitsToProcess=0):
 #         print 'creating batch',stationId,batchId,numberOfUnits
+        if stationId:
             data['graph']['node'][stationId]['wip'].insert(0,{
                   "_class": 'Dream.Batch',
                   "id": batchId+'_wip',