/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.ha.framework.interfaces;
import java.util.ArrayList;
import java.util.Hashtable;
/**
* JVM singleton that associates a list of targets (+ other info)
* contained in a FamilyClusterInfo to a proxy family. For example
* All remote proxies for a given EJB in a given cluster are part of the
* same proxy family. Note that home and remote for a same EJB form *2*
* proxy families.
*
* @see org.jboss.ha.framework.interfaces.FamilyClusterInfo
* @see org.jboss.ha.framework.interfaces.FamilyClusterInfoImpl
*
* @author <a href="mailto:sacha.labourey@cogito-info.ch">Sacha Labourey</a>.
* @version $Revision: 57188 $
*
* <p><b>Revisions:</b>
*
* <p><b>2002/08/23, Sacha Labourey:</b>
* <ul>
* <li> First implementation </li>
* </ul>
*/
public class ClusteringTargetsRepository
{
// Constants -----------------------------------------------------
// Attributes ----------------------------------------------------
protected static Hashtable families = new Hashtable ();
// Static --------------------------------------------------------
public synchronized static FamilyClusterInfo initTarget (String familyName, ArrayList targets)
{
return initTarget (familyName, targets, 0L);
}
public synchronized static FamilyClusterInfo initTarget (String familyName, ArrayList targets, long viewId)
{
// this method must be somehow synchronized to avoid multiple FamilyClusterInfoImpl
// for the same familyName in multi-threaded app accessing the same bean
//
FamilyClusterInfoImpl family = (FamilyClusterInfoImpl)families.get (familyName);
if (family == null)
{
family = new FamilyClusterInfoImpl (familyName, targets, viewId);
families.put (familyName, family);
}
else
{
// no need to initialize: it is already done: we keep the same object
//
family.updateClusterInfo (targets, viewId); // should not happen: possible if redeploy after undeploy fails
}
return family;
}
public static FamilyClusterInfo getFamilyClusterInfo (String familyName)
{
return (FamilyClusterInfo)families.get (familyName);
}
// Constructors --------------------------------------------------
private ClusteringTargetsRepository () {}
// Public --------------------------------------------------------
// Z implementation ----------------------------------------------
// Y overrides ---------------------------------------------------
// Package protected ---------------------------------------------
// Protected -----------------------------------------------------
// Private -------------------------------------------------------
// Inner classes -------------------------------------------------
}
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