/**
* Read in the topology file from the given InputStream
*
* @param inputStream The {@link InputStream} for reading
* @return read {@link Topology}
*/
public static Topology readTopology(InputStream inputStream) {
XMLInputFactory factory = XMLInputFactory.newInstance();
XMLStreamReader parser;
Topology topology = null;
try {
parser = factory.createXMLStreamReader(inputStream);
if ((parser.getEventType() == XMLStreamConstants.START_DOCUMENT)) {
parser.nextTag();
}
// Read Topology Head
if (parser.getLocalName().equals("topology")
&& !(parser.getEventType() == XMLStreamConstants.END_ELEMENT)) {
topology = new Topology();
for (int i = 0; i < parser.getNamespaceCount(); i++) {
if (parser.getNamespacePrefix(i) != null) {
topology
.getNamespaceMap()
.addNamespace(parser.getNamespaceURI(i), parser.getNamespacePrefix(i));
}
}
topology.setName(BPEL4ChorReader.getStrAttribute(parser, "name", true).toString());
topology.setTargetNamespace(
BPEL4ChorReader.getStrAttribute(parser, "targetNamespace", true).toString());
parser.nextTag();
}
// Read participantTypes
if (parser.getLocalName().equals("participantTypes")) {
parser.nextTag();
// Read participantType(s)
while (parser.hasNext() && parser.getLocalName().equals("participantType")) {
if (!(parser.getEventType() == XMLStreamConstants.END_ELEMENT)) {
ParticipantType participantType =
BPEL4ChorReader.readInParticipantType(parser, topology.getNamespaceMap());
topology.getParticipantTypes().add(participantType);
}
parser.nextTag();
}
parser.nextTag();
}
// Read participants
if (parser.getLocalName().equals("participants")) {
parser.nextTag();
// Read participant(s)
if (parser.hasNext() && parser.getLocalName().equals("participant")) {
while (parser.hasNext() && parser.getLocalName().equals("participant")) {
Participant participant =
BPEL4ChorReader.readInParticipant(parser, topology.getNamespaceMap(), false);
topology.getParticipants().add(participant);
}
if (parser.getLocalName() != "participantSet") {
parser.nextTag();
}
}
// Read participantSet(s)
if (parser.hasNext() && parser.getLocalName().equals("participantSet")) {
while (parser.hasNext() && parser.getLocalName().equals("participantSet")) {
ParticipantSet participantSet =
BPEL4ChorReader.readInParticipantSet(parser, topology.getNamespaceMap());
topology.getParticipantSets().add(participantSet);
}
parser.nextTag();
}
}
// Read messageLinks
if (parser.getLocalName().equals("messageLinks")) {
parser.nextTag();
// Read messageLink(s)
while (parser.hasNext() && parser.getLocalName().equals("messageLink")) {
if (!(parser.getEventType() == XMLStreamConstants.END_ELEMENT)) {
MessageLink messageLink =
BPEL4ChorReader.readInMessageLinkTL(parser, topology.getNamespaceMap());
topology.getMessageLinks().add(messageLink);
}
parser.nextTag();
}
parser.nextTag();
}
int event = parser.next();
if (event == XMLStreamConstants.END_DOCUMENT) {
parser.close();
}
} catch (XMLStreamException e) {
e.printStackTrace();
} catch (MalformedTLGLSyntaxException e) {
e.printStackTrace();
}
return topology;
}