/*
* $Header: /home/cvs/jakarta-tomcat-catalina/catalina/src/share/org/apache/naming/factory/TyrexFactory.java,v 1.1.1.1 2002/07/18 16:47:36 remm Exp $
* $Revision: 1.1.1.1 $
* $Date: 2002/07/18 16:47:36 $
*
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 1999 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
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* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
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* 5. Products derived from this software may not be called "Apache"
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package org.apache.naming.factory;
import java.net.URL;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.naming.spi.ObjectFactory;
import tyrex.tm.TransactionDomain;
import tyrex.tm.DomainConfigurationException;
import tyrex.tm.RecoveryException;
/**
* Abstract superclass of any factory that creates objects from Tyrex.<br>
*
* Subclasses can use getTransactionDomain() to handle the retrieval and
* creation of the TransactionDomain.
*
* Tyrex is an open-source transaction manager, developed by Assaf Arkin and
* exolab.org. See the <a href="http://tyrex.exolab.org/">Tyrex homepage</a>
* for more details about Tyrex and downloads.
*
* @author David Haraburda
* @version $Revision: 1.1.1.1 $ $Date: 2002/07/18 16:47:36 $
*/
public abstract class TyrexFactory implements ObjectFactory {
// ----------------------------------------------------------- Constructors
// -------------------------------------------------------------- Constants
// ----------------------------------------------------- Instance Variables
// ------------------------------------------------------ Protected Methods
/**
* Get (and if necessary, create) the active TransactionDomain
*
* This class checks to see if there is already a TransactionDomain
* setup and instantiated. If so, it is returned, otherwise one is
* created and initialized using properties obtained from JNDI.
*/
protected TransactionDomain getTransactionDomain() throws NamingException {
TransactionDomain domain = null;
InitialContext initCtx = new InitialContext();
String config = initCtx.lookup("java:comp/env/" +
Constants.TYREX_DOMAIN_CONFIG).toString();
String name = initCtx.lookup("java:comp/env/" +
Constants.TYREX_DOMAIN_NAME).toString();
if (config != null && name != null) {
try {
domain = TransactionDomain.getDomain(name);
} catch(Throwable t) {
// Tyrex throws exceptions if required classes aren't found.
log("Error loading Tyrex TransactionDomain", t);
throw new NamingException
("Exception loading TransactionDomain: " + t.getMessage());
}
if ((domain == null)
|| (domain.getState() == TransactionDomain.TERMINATED)) {
URL configURL = Thread.currentThread().getContextClassLoader()
.getResource(config);
if (configURL == null)
throw new NamingException
("Could not load Tyrex domain config file");
try {
domain =
TransactionDomain.createDomain(configURL.toString());
} catch(DomainConfigurationException dce) {
throw new NamingException
("Could not create TransactionDomain: "
+ dce.getMessage());
}
}
} else {
throw new NamingException
("Specified config file or domain name "
+ "parameters are invalid.");
}
if (domain.getState() == TransactionDomain.READY) {
try {
domain.recover();
} catch( RecoveryException re ) {
throw new NamingException
("Could not activate TransactionDomain: "
+ re.getMessage() );
}
}
return domain;
}
// -------------------------------------------------------- Private Methods
private void log(String message) {
System.out.print("TyrexFactory: ");
System.out.println(message);
}
private void log(String message, Throwable exception) {
log(message);
exception.printStackTrace(System.out);
}
}