mq5.0-source.main.mq-broker.broker-core.src.main.java.com.sun.messaging.jmq.jmsserver.GlobalProperties Maven / Gradle / Ivy
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2000-2012 Oracle and/or its affiliates. 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_1_1.html
* or packager/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 packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [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.
*/
/*
* @(#)GlobalProperties.java 1.7 06/28/07
*/
package com.sun.messaging.jmq.jmsserver;
import com.sun.messaging.jmq.jmsserver.config.*;
/**
* Singleton class which contains properties which are used
* in several locations in the broker.
*
* Ultimately, I'd like this to be a generic class (so you could
* just add in a new property to watch and everything else would
* automatically happen .. but theres not enough time in this
* release
*
* These properties are different than the properties in Globals,
* because they may change at any point (and should be retrieve
* each time)
*/
// FOR NOW, when you add a new property:
// 1. create a new index
// 2. add the property name to property_names
// 3. create a global property (e.g. AUTOCREATE_TOPIC)
// 4. update updateProperty
public class GlobalProperties implements ConfigListener
{
private static final Object lock = GlobalProperties.class;
private static GlobalProperties globals = null;
/*
* Property names
*/
private final int AUTOCREATE_TOPIC_NDX = 0;
private final int AUTOCREATE_QUEUE_NDX = 1;
private final int REDELIVER_NDX = 2;
private final int TRANSACTION_DEBUG_NDX = 3;
public final String[] property_names =
{ Globals.IMQ + ".autocreate.topic",
Globals.IMQ + ".autocreate.queue",
Globals.IMQ + ".redelivered.optimization",
Globals.IMQ + ".transaction.debug" /* PRIVATE */
};
public boolean AUTOCREATE_TOPIC = false;
public boolean AUTOCREATE_QUEUE = false;
public boolean REDELIVER_OPTIMIZATION = true;
public boolean TRANSACTION_DEBUG = false;
private GlobalProperties() {
BrokerConfig config = Globals.getConfig();
for (int i =0; i < property_names.length; i ++) {
updateProperty(property_names[i]);
config.addListener(property_names[i], this);
}
}
public void updateProperty(String propname) {
BrokerConfig config = Globals.getConfig();
// a case statement might be cleaner, but this is OK for
// this release
if (propname.equals(property_names[AUTOCREATE_TOPIC_NDX])) {
AUTOCREATE_TOPIC=config.getBooleanProperty(propname);
} else if (propname.equals(property_names[AUTOCREATE_QUEUE_NDX])) {
AUTOCREATE_QUEUE=config.getBooleanProperty(propname);
} else if (propname.equals(property_names[REDELIVER_NDX])) {
REDELIVER_OPTIMIZATION=config.getBooleanProperty(propname, true);
} else if (propname.equals(property_names[TRANSACTION_DEBUG_NDX])) {
TRANSACTION_DEBUG=config.getBooleanProperty(propname);
}
}
public static GlobalProperties getGlobalProperties() {
if (globals == null) {
synchronized(lock) {
if (globals == null)
globals = new GlobalProperties();
}
}
return globals;
}
/**
* method which is called to validate that the passed in
* name/value is valid.
*
* If the data is not valid, a PropertyUpdateException should be
* thrown.
*
* @param name the name of the property to be validated
* @param value the new value requested for that property
* @throws PropertyUpdateException the the value is invalid
*
*/
public void validate(String name, String value)
throws PropertyUpdateException
{
// dont bother for now
}
/**
* method which is called then a class which is interested in
* the state of a specific property should updated its internal
* state based on the new value of the property.
*
* @param name the name of the property to be validated
* @param value the new value requested for that property
* @return true if the property has taken affect, false if it
* will not take affect until the next broker restart
*
*/
public boolean update(String name, String value)
{
updateProperty(name);
return true;
}
}