private static Flow parseFlow(final XMLStreamReader reader) throws XMLStreamException {
final Flow flow = new Flow(getAttributeValue(reader, XmlAttribute.ID, true));
flow.setAttributeNext(getAttributeValue(reader, XmlAttribute.NEXT, false));
while (reader.hasNext()) {
final int eventType = reader.next();
if (eventType != START_ELEMENT && eventType != END_ELEMENT) {
continue;
}
final XmlElement element = XmlElement.forName(reader.getLocalName());
switch (eventType) {
case START_ELEMENT:
switch (element) {
case DECISION:
flow.addJobElement(parseDecision(reader));
break;
case FLOW:
flow.addJobElement(parseFlow(reader));
break;
case SPLIT:
flow.addJobElement(parseSplit(reader));
break;
case STEP:
flow.addJobElement(parseStep(reader));
break;
case NEXT:
if (flow.getAttributeNext() != null) {
throw BatchLogger.LOGGER.cannotHaveBothNextAttributeAndElement(
reader.getLocation(), flow.getAttributeNext());
}
flow.addTransitionElement(parseNext(reader));
break;
case FAIL:
flow.addTransitionElement(parseFail(reader));
break;
case END:
flow.addTransitionElement(parseEnd(reader));
break;
case STOP:
flow.addTransitionElement(parseStop(reader));
break;
default:
throw BatchLogger.LOGGER.unexpectedXmlElement(
reader.getLocalName(), reader.getLocation());
}
break;
case END_ELEMENT:
switch (element) {
case FLOW:
return flow;
default:
throw BatchLogger.LOGGER.unexpectedXmlElement(
reader.getLocalName(), reader.getLocation());
}
}
}
throw BatchLogger.LOGGER.unexpectedXmlElement(reader.getLocalName(), reader.getLocation());
}
