public void addXPathQuery(
String xpathExpression, String subscriptionId, SubscriptionState subscribeRequest)
throws RuntimeException {
index++;
counter++;
if (WSMGParameter.debugYFilter) logger.debug("QueryExp=" + xpathExpression);
Integer yFilterIdObj = xPathToYFilterId.get(xpathExpression);
int yFilterId = -1;
if (yFilterIdObj != null) {
yFilterId = yFilterIdObj.intValue();
} else {
Query query = XPQuery.parseQuery(xpathExpression, index);
if (query == null) {
throw new RuntimeException("Invalid XPath expression:" + xpathExpression);
}
if (WSMGParameter.debugYFilter)
logger.debug("addSubscription " + xpathExpression + " query :" + query);
yFilterId = yfilter.addQuery(query);
if (WSMGParameter.debugYFilter) yfilter.printQueryIndex();
xPathToYFilterId.put(xpathExpression, Integer.valueOf(yFilterId));
yFilterIdToXPath.put(new Integer(yFilterId), xpathExpression);
yFilterIdToQuery.put(yFilterId, query);
}
if (WSMGParameter.debugYFilter) logger.debug("YFilterId=" + yFilterId);
consumerListmanager.addToConsumerList(xpathExpression, subscribeRequest, subscriptionId);
}
public List<ConsumerInfo> getMatchingConsumerList(String messageString) {
List<ConsumerInfo> matchingConsumerList = new LinkedList<ConsumerInfo>();
XMLTree tree = new XMLTree(new java.io.StringReader(messageString));
if (WSMGParameter.debugYFilter) tree.print();
yfilter.setEventSequence(tree.getEvents());
yfilter.startParsing();
// print the matched queries //
if (SystemGlobals.hasQueries) {
if (WSMGParameter.debugYFilter) yfilter.printQueryResults(System.out);
} else {
System.out.println("no match");
return matchingConsumerList;
}
Iterator<Integer> it = (Iterator<Integer>) yfilter.getMatchedQueries().iterator();
while (it.hasNext()) {
Integer qid = it.next();
String xpath = yFilterIdToXPath.get(qid);
ConsumerList consumerList = consumerListmanager.getConsumerListByToken(xpath);
if (consumerList != null) { // has subscription to this topic
matchingConsumerList.addAll(consumerList.getConsumerList());
}
}
yfilter.clear();
return matchingConsumerList;
}
public int removeSubscription(String subscriptionId) {
String xPath = consumerListmanager.getTokenBySubscriptionId(subscriptionId);
int result = consumerListmanager.removeFromConsumerList(subscriptionId, xPath);
if (result == 0) {
return 0;
}
int currentConsumerCount = consumerListmanager.getConsumerListByToken(xPath).size();
if (currentConsumerCount == 0) {
Integer yFilterId = xPathToYFilterId.get(xPath);
Query q = yFilterIdToQuery.get(yFilterId);
yfilter.deleteQuery(q, q.getQueryId());
yFilterIdToQuery.remove(yFilterId);
}
counter--;
return result;
}