01: /*
02: * JBoss, Home of Professional Open Source.
03: * Copyright 2006, Red Hat Middleware LLC, and individual contributors
04: * as indicated by the @author tags. See the copyright.txt file in the
05: * distribution for a full listing of individual contributors.
06: *
07: * This is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU Lesser General Public License as
09: * published by the Free Software Foundation; either version 2.1 of
10: * the License, or (at your option) any later version.
11: *
12: * This software is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public
18: * License along with this software; if not, write to the Free
19: * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21: */
22:
23: package org.jboss.ha.framework.interfaces;
24:
25: /**
26: * ThreadLocal-based context information about whether the
27: * current thread is executing a cluster merge.
28: * <p/>
29: * This is really a temporary 4.x workaround for JBAS-4229. In
30: * AS 5 this will likely be replaced by adding a boolean parameter
31: * to DistributedReplicantManager.ReplicantListener.replicantsChanged().
32: *
33: * @author Brian Stansberry
34: */
35: public class ClusterMergeStatus {
36: private static final ThreadLocal status = new ThreadLocal();
37:
38: public static void startMergeProcess() {
39: status.set(Boolean.TRUE);
40: }
41:
42: public static void endMergeProcess() {
43: status.set(null);
44: }
45:
46: public static boolean isMergeInProcess() {
47: return status.get() != null;
48: }
49: }
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