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https://issues.apache.org/activemq/browse/AMQ-2695 - rework getMessageCount to just use the index, build on changes from - https://issues.apache.org/activemq/browse/AMQ-2985 

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@1038296 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Gary Tully 2010-11-23 19:36:35 +00:00
parent 8871c67e8f
commit 21664a9609
1 changed files with 5 additions and 24 deletions
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27
activemq-core/src/main/java/org/apache/activemq/store/kahadb/KahaDBStore.java
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@ -720,7 +720,6 @@ public class KahaDBStore extends MessageDatabase implements PersistenceAdapter {
public int getMessageCount(String clientId, String subscriptionName) throws IOException {
final String subscriptionKey = subscriptionKey(clientId, subscriptionName);
final SubscriptionInfo info = lookupSubscription(clientId, subscriptionName);
indexLock.writeLock().lock();
try {
return pageFile.tx().execute(new Transaction.CallableClosure<Integer, IOException>() {
@ -733,30 +732,12 @@ public class KahaDBStore extends MessageDatabase implements PersistenceAdapter {
}
int counter = 0;
try {
String selector = info.getSelector();
BooleanExpression selectorExpression = null;
if (selector != null) {
selectorExpression = SelectorParser.parse(selector);
}
sd.orderIndex.resetCursorPosition();
sd.orderIndex.setBatch(tx, cursorPos);
for (Iterator<Entry<Long, MessageKeys>> iterator = sd.orderIndex.iterator(tx); iterator
.hasNext();) {
Entry<Long, MessageKeys> entry = iterator.next();
if (selectorExpression != null) {
MessageEvaluationContext ctx = new MessageEvaluationContext();
ctx.setMessageReference(loadMessage(entry.getValue().location));
if (selectorExpression.matches(ctx)) {
for (Iterator<Entry<Long, HashSet<String>>> iterator =
sd.ackPositions.iterator(tx, cursorPos.lastAckedSequence); iterator.hasNext();) {
Entry<Long, HashSet<String>> entry = iterator.next();
if (entry.getValue().contains(subscriptionKey)) {
counter++;
}
} else {
counter++;
}
}
sd.orderIndex.resetCursorPosition();
} catch (Exception e) {
throw IOExceptionSupport.create(e);
}
return counter;
}