Fix ClassCastException in javax.management.monitor.Monitor.getObservedObjects()
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Key: JBJMX-3
URL: http://jira.jboss.com/jira/browse/JBJMX-3
Project: JBoss JMX
Type: Patch
Environment: At least from Jboss 3.2.5. Still in HEAD.
Reporter: Christopher Day
Assigned to: Adrian Brock
When trying to access a StringMonitor from jmx-console, I get a
ClassCastException from javax.management.monitor.Monitor.getObservedObjects().
This is because the method incorrectly iterates over the keys of the
observedObjects HashMap, rather than the values. The Exception is raised when
the iterator.next() is cast to an ObservedObject, since the keys are
ObjectNames. The following patch fixes the problem.
--- Monitor.java 2004-12-22 16:57:52.207142400 -0800
+++
/cygdrive/c/jboss-3.2.5-src/jmx/src/main/javax/management/monitor/Monitor.java
2004-01-02 13:56:54.000000000 -0800
@@ -181,7 +181,7 @@
public ObjectName[] getObservedObjects()
{
- Set set = new HashSet(observedObjects.values());
+ Set set = new HashSet(observedObjects.keySet());
elementCount = set.size();
ObjectName[] result = new ObjectName[set.size()];
alreadyNotifieds = new int[set.size()];
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