public BpmnModel convertToBpmnModel(XMLStreamReader xtr) {
BpmnModel model = new BpmnModel();
try {
Process activeProcess = null;
List<SubProcess> activeSubProcessList = new ArrayList<SubProcess>();
while (xtr.hasNext()) {
try {
xtr.next();
} catch (Exception e) {
LOGGER.error("Error reading XML document", e);
throw new XMLException("Error reading XML", e);
}
if (xtr.isEndElement() && ELEMENT_SUBPROCESS.equals(xtr.getLocalName())) {
activeSubProcessList.remove(activeSubProcessList.size() - 1);
}
if (xtr.isEndElement() && ELEMENT_TRANSACTION.equals(xtr.getLocalName())) {
activeSubProcessList.remove(activeSubProcessList.size() - 1);
}
if (xtr.isStartElement() == false) continue;
if (ELEMENT_DEFINITIONS.equals(xtr.getLocalName())) {
model.setTargetNamespace(xtr.getAttributeValue(null, TARGET_NAMESPACE_ATTRIBUTE));
for (int i = 0; i < xtr.getNamespaceCount(); i++) {
String prefix = xtr.getNamespacePrefix(i);
if (prefix != null) {
model.addNamespace(prefix, xtr.getNamespaceURI(i));
}
}
} else if (ELEMENT_SIGNAL.equals(xtr.getLocalName())) {
new SignalParser().parse(xtr, model);
} else if (ELEMENT_MESSAGE.equals(xtr.getLocalName())) {
new MessageParser().parse(xtr, model);
} else if (ELEMENT_ERROR.equals(xtr.getLocalName())) {
if (StringUtils.isNotEmpty(xtr.getAttributeValue(null, ATTRIBUTE_ID))) {
model.addError(
xtr.getAttributeValue(null, ATTRIBUTE_ID),
xtr.getAttributeValue(null, ATTRIBUTE_ERROR_CODE));
}
} else if (ELEMENT_IMPORT.equals(xtr.getLocalName())) {
new ImportParser().parse(xtr, model);
} else if (ELEMENT_ITEM_DEFINITION.equals(xtr.getLocalName())) {
new ItemDefinitionParser().parse(xtr, model);
} else if (ELEMENT_INTERFACE.equals(xtr.getLocalName())) {
new InterfaceParser().parse(xtr, model);
} else if (ELEMENT_IOSPECIFICATION.equals(xtr.getLocalName())) {
new IOSpecificationParser().parseChildElement(xtr, activeProcess, model);
} else if (ELEMENT_PARTICIPANT.equals(xtr.getLocalName())) {
if (StringUtils.isNotEmpty(xtr.getAttributeValue(null, ATTRIBUTE_ID))) {
Pool pool = new Pool();
pool.setId(xtr.getAttributeValue(null, ATTRIBUTE_ID));
pool.setName(xtr.getAttributeValue(null, ATTRIBUTE_NAME));
pool.setProcessRef(xtr.getAttributeValue(null, ATTRIBUTE_PROCESS_REF));
model.getPools().add(pool);
}
} else if (ELEMENT_PROCESS.equals(xtr.getLocalName())) {
Process process = new ProcessParser().parse(xtr, model);
if (process != null) {
activeProcess = process;
}
} else if (ELEMENT_POTENTIAL_STARTER.equals(xtr.getLocalName())) {
new PotentialStarterParser().parse(xtr, activeProcess);
} else if (ELEMENT_LANE.equals(xtr.getLocalName())) {
new LaneParser().parse(xtr, activeProcess);
} else if (ELEMENT_DOCUMENTATION.equals(xtr.getLocalName())) {
BaseElement parentElement = null;
if (activeSubProcessList.size() > 0) {
parentElement = activeSubProcessList.get(activeSubProcessList.size() - 1);
} else if (activeProcess != null) {
parentElement = activeProcess;
}
new DocumentationParser().parseChildElement(xtr, parentElement, model);
} else if (ELEMENT_SUBPROCESS.equals(xtr.getLocalName())) {
new SubProcessParser().parse(xtr, activeSubProcessList, activeProcess);
} else if (ELEMENT_TRANSACTION.equals(xtr.getLocalName())) {
new SubProcessParser().parse(xtr, activeSubProcessList, activeProcess);
} else if (ELEMENT_DI_SHAPE.equals(xtr.getLocalName())) {
new BpmnShapeParser().parse(xtr, model);
} else if (ELEMENT_DI_EDGE.equals(xtr.getLocalName())) {
new BpmnEdgeParser().parse(xtr, model);
} else if (ELEMENT_EXECUTION_LISTENER.equals(xtr.getLocalName())) {
new ExecutionListenerParser().parseChildElement(xtr, activeProcess, model);
} else {
if (activeSubProcessList.size() > 0
&& ELEMENT_EXTENSIONS.equalsIgnoreCase(xtr.getLocalName())) {
new ExecutionListenerParser()
.parseChildElement(
xtr, activeSubProcessList.get(activeSubProcessList.size() - 1), model);
} else if (activeSubProcessList.size() > 0
&& ELEMENT_MULTIINSTANCE.equalsIgnoreCase(xtr.getLocalName())) {
new MultiInstanceParser()
.parseChildElement(
xtr, activeSubProcessList.get(activeSubProcessList.size() - 1), model);
} else if (convertersToBpmnMap.containsKey(xtr.getLocalName())) {
if (activeProcess.isExecutable()) {
Class<? extends BaseBpmnXMLConverter> converterClass =
convertersToBpmnMap.get(xtr.getLocalName());
BaseBpmnXMLConverter converter = converterClass.newInstance();
if (userTaskFormTypes != null && ELEMENT_TASK_USER.equals(xtr.getLocalName())) {
UserTaskXMLConverter userTaskConverter = (UserTaskXMLConverter) converter;
for (String formType : userTaskFormTypes) {
userTaskConverter.addFormType(formType);
}
} else if (startEventFormTypes != null
&& ELEMENT_EVENT_START.equals(xtr.getLocalName())) {
StartEventXMLConverter startEventConverter = (StartEventXMLConverter) converter;
for (String formType : startEventFormTypes) {
startEventConverter.addFormType(formType);
}
}
converter.convertToBpmnModel(xtr, model, activeProcess, activeSubProcessList);
}
}
}
}
for (Process process : model.getProcesses()) {
processFlowElements(process.getFlowElements(), process);
}
} catch (Exception e) {
LOGGER.error("Error processing BPMN document", e);
throw new XMLException("Error processing BPMN document", e);
}
return model;
}