dataInputExpression.setValue(inputDataItem);
BpmnModelUtil.addExtensionElement(dataInput, FixFlowPackage.Literals.RESOURCE_FILTER__EXPRESSION, dataInputExpression);
newLoopCharacteristics.setInputDataItem(dataInput);
//输入数据集
LoopDataInputCollection loopDataInputCollection = FixFlowFactory.eINSTANCE.createLoopDataInputCollection();
Expression inputCollectionExpression = FixFlowFactory.eINSTANCE.createExpression();
inputCollectionExpression.setName(inputDataCollection);
inputCollectionExpression.setValue(inputDataCollection);
loopDataInputCollection.setExpression(inputCollectionExpression);
BpmnModelUtil.addExtensionElement(newLoopCharacteristics, FixFlowPackage.Literals.DOCUMENT_ROOT__LOOP_DATA_INPUT_COLLECTION, loopDataInputCollection);
//输出数据集
LoopDataOutputCollection loopDataOutputCollection = FixFlowFactory.eINSTANCE.createLoopDataOutputCollection();
Expression outputCollectionExpression = FixFlowFactory.eINSTANCE.createExpression();