java.org.jboss.embedded.jndi.BridgeContext Maven / Gradle / Ivy
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* published by the Free Software Foundation; either version 2.1 of
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*
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
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* License along with this software; if not, write to the Free
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*/
package org.jboss.embedded.jndi;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import javax.naming.Context;
import javax.naming.NameNotFoundException;
/**
* comment
*
* @author Bill Burke
* @version $Revision: 1.1 $
*/
/** This class is the Context interface handler and performs the
failed lookup delegation from the primary to secondary naming
Context.
*/
public class BridgeContext implements InvocationHandler
{
private Context primaryCtx;
private Context secondaryCtx;
public static Context createBridge(Context primaryCtx, Context secondaryCtx)
{
BridgeContext h = new BridgeContext(primaryCtx, secondaryCtx);
Class[] interfaces = {Context.class};
ClassLoader loader = Thread.currentThread().getContextClassLoader();
return (Context) Proxy.newProxyInstance(loader, interfaces, h);
}
BridgeContext(Context primaryCtx, Context secondaryCtx)
{
this.primaryCtx = primaryCtx;
this.secondaryCtx = secondaryCtx;
}
public Object invoke(Object proxy, Method method, Object[] args)
throws Throwable
{
Object value;
// First try the primary context
try
{
value = method.invoke(primaryCtx, args);
}
catch(InvocationTargetException e)
{
Throwable t = e.getTargetException();
// Try the secondary if this is a failed lookup
if( t instanceof NameNotFoundException && method.getName().startsWith("lookup") )
{
try
{
value = method.invoke(secondaryCtx, args);
}
catch (InvocationTargetException e1)
{
throw e1.getTargetException();
}
}
else
{
throw t;
}
}
return value;
}
}