I have code that (within a single transaction) removes a node and then puts a
new value into the cache that is a child of the removed node. After the
transaction completes, the cache contains the new value AND the child nodes
that should have been removed when the parent node was removed. If I execute
the same code without a transaction, it works correctly, only the new value is
present and all of the original children of the removed node are gone. The
following code is a simple demonstration of the problem:
public class RemoveNodeTxProblem {
public static void main(String[] args) throws Exception {
CacheFactory<String, Object> factory =
DefaultCacheFactory.getInstance();
Cache<String, Object> cache = factory.createCache(new
XmlConfigurationParser().parseFile(args[0]), false);
cache.create();
cache.start();
Fqn rootFqn = Fqn.fromString("/a/b");
cache.put(rootFqn, "c", true);
TransactionManager txMgr =
cache.getConfiguration().getRuntimeConfig().getTransactionManager();
txMgr.begin();
cache.removeNode(rootFqn);
cache.put(rootFqn, "d", "Blah");
txMgr.commit();
System.out.println("c = " + cache.get(rootFqn, "c")); // c = true when
tx is used, null when tx is not used
System.out.println("d = " + cache.get(rootFqn, "d"));
cache.stop();
}
}
Is this a bug? If not, is there a way to get the non-transactional behavior
(deleted children don't come back after a new child is added) in a
transactional way? I'm running JBoss Cache 2.0.0 GA and JOTM 2.0.9 as my
transaction manager.
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