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package org.apache.naming.factory;
import java.util.Hashtable;
import javax.naming.Name;
import javax.naming.Context;
import javax.naming.NamingException;
import javax.naming.Reference;
import javax.naming.RefAddr;
import javax.naming.spi.ObjectFactory;
import org.apache.naming.ResourceRef;
/**
* Object factory for Resources.
*
* @author Remy Maucherat
* @version $Revision: 1.2 $ $Date: 2005/12/08 01:29:07 $
*/
public class ResourceFactory
implements ObjectFactory {
// ----------------------------------------------------------- Constructors
// -------------------------------------------------------------- Constants
// ----------------------------------------------------- Instance Variables
// --------------------------------------------------------- Public Methods
// -------------------------------------------------- ObjectFactory Methods
/**
* Crete a new DataSource instance.
*
* @param obj The reference object describing the DataSource
*/
public Object getObjectInstance(Object obj, Name name, Context nameCtx,
Hashtable environment)
throws Exception {
if (obj instanceof ResourceRef) {
Reference ref = (Reference) obj;
ObjectFactory factory = null;
RefAddr factoryRefAddr = ref.get(Constants.FACTORY);
if (factoryRefAddr != null) {
// Using the specified factory
String factoryClassName =
factoryRefAddr.getContent().toString();
// Loading factory
ClassLoader tcl =
Thread.currentThread().getContextClassLoader();
Class factoryClass = null;
if (tcl != null) {
try {
factoryClass = tcl.loadClass(factoryClassName);
} catch(ClassNotFoundException e) {
throw new NamingException(
"Could not create resource factory, ClassNotFoundException:" +
e.getMessage());
}
} else {
try {
factoryClass = Class.forName(factoryClassName);
} catch(ClassNotFoundException e) {
throw new NamingException(
"Could not create resource factory, ClassNotFoundException:" +
e.getMessage());
}
}
if (factoryClass != null) {
try {
factory = (ObjectFactory) factoryClass.newInstance();
} catch(Throwable t) {
if( t instanceof NamingException)
throw (NamingException)t;
throw new NamingException(
"Could not create resource factory instance, " +
t.getMessage());
}
}
} else {
if (ref.getClassName().equals("javax.sql.DataSource")) {
String javaxSqlDataSourceFactoryClassName =
System.getProperty("javax.sql.DataSource.Factory",
Constants.DBCP_DATASOURCE_FACTORY);
try {
factory = (ObjectFactory)
Class.forName(javaxSqlDataSourceFactoryClassName)
.newInstance();
} catch(Throwable t) {
}
} else if (ref.getClassName().equals("javax.mail.Session")) {
String javaxMailSessionFactoryClassName =
System.getProperty("javax.mail.Session.Factory",
"org.apache.naming.factory.MailSessionFactory");
try {
factory = (ObjectFactory)
Class.forName(javaxMailSessionFactoryClassName)
.newInstance();
} catch(Throwable t) {
}
}
}
if (factory != null) {
return factory.getObjectInstance
(obj, name, nameCtx, environment);
} else {
throw new NamingException
("Cannot create resource instance");
}
}
return null;
}
}