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STOMP-JMS is a JMS implementation using STOMP as the wire protocol
/**
* Copyright (C) 2010-2011, FuseSource Corp. All rights reserved.
*
* http://fusesource.com
*
* The software in this package is published under the terms of the
* CDDL license a copy of which has been included with this distribution
* in the license.txt file.
*/
package org.fusesource.stompjms.jndi;
import javax.naming.NamingException;
import javax.naming.Reference;
import javax.naming.Referenceable;
import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.HashMap;
import java.util.Map;
/**
* Facilitates objects to be stored in JNDI as properties
*/
public abstract class JNDIStorable implements Referenceable, Externalizable {
private Map properties;
/**
* Set the properties that will represent the instance in JNDI
*
* @param props
*/
protected abstract void buildFromProperties(Map props);
/**
* Initialize the instance from properties stored in JNDI
*
* @param props
*/
protected abstract void populateProperties(Map props);
/**
* set the properties for this instance as retrieved from JNDI
*
* @param props
*/
public synchronized void setProperties(Map props) {
this.properties = props;
buildFromProperties(props);
}
/**
* Get the properties from this instance for storing in JNDI
*
* @return the properties
*/
public synchronized Map getProperties() {
if (this.properties == null) {
this.properties = new HashMap();
}
populateProperties(this.properties);
return this.properties;
}
/**
* Retrive a Reference for this instance to store in JNDI
*
* @return the built Reference
* @throws NamingException if error on building Reference
*/
public Reference getReference() throws NamingException {
return JNDIReferenceFactory.createReference(this.getClass().getName(), this);
}
/**
* @param in
* @throws IOException
* @throws ClassNotFoundException
* @see java.io.Externalizable#readExternal(java.io.ObjectInput)
*/
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
Map props = (Map) in.readObject();
if (props != null) {
setProperties(props);
}
}
/**
* @param out
* @throws IOException
* @see java.io.Externalizable#writeExternal(java.io.ObjectOutput)
*/
public void writeExternal(ObjectOutput out) throws IOException {
out.writeObject(getProperties());
}
protected String getProperty(Map map, String key, String defaultValue) {
String value = map.get(key);
if (value != null) {
return value;
}
return defaultValue;
}
}