FileDocCategorySizeDatePackage
SFSBClientVersionManager.javaAPI DocGlassfish v2 API3712Thu May 31 15:43:32 BST 2007com.sun.enterprise.iiop

SFSBClientVersionManager.java

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 * 
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
 * identifying information: "Portions Copyrighted [year]
 * [name of copyright owner]"
 * 
 * Contributor(s):
 * 
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package com.sun.enterprise.iiop;

import java.util.Map;
import java.util.HashMap;
import java.util.logging.Level;
import java.util.logging.Logger;

import com.sun.logging.LogDomains;

public class SFSBClientVersionManager
    implements SFSBVersionConstants {

    private static final Logger _logger =
        LogDomains.getLogger(LogDomains.EJB_LOGGER);
    
    private static Map<Long, Map<Object, Long>> id2Map
        = new HashMap<Long, Map<Object, Long>>();
    
    public static synchronized long getClientVersion(long containerId, Object oid) {
        Map<Object, Long> map = id2Map.get(new Long(containerId));
        long version = NO_VERSION;
        if (map != null) {
            Long vv = map.get(oid);
            version = (vv != null) ? vv : NO_VERSION;
        }
        
        return version;
    }

    public static synchronized void setClientVersion(long containerId,
            Object oid, long version) {
        if (version != NO_VERSION) {
            Map<Object, Long> map = id2Map.get(new Long(containerId));
            if (map == null) {
                map = new HashMap<Object, Long>();
                id2Map.put(new Long(containerId), map);
            }

            
            Long existingVersion = map.get(oid);
            
            if ((existingVersion == null) || (version > existingVersion)) {
                map.put(oid, version);
            }
        }
    }
    
    public static synchronized void removeClientVersion(long containerId,
            Object oid) {
        Map<Object, Long> map = id2Map.get(new Long(containerId));
        if (map != null) {
            map.remove(oid);
        }
    }
    
    public static void removeAllEntries(long containerId) {
        id2Map.remove(containerId);
    }
}