/**
* EasyBeans
* Copyright (C) 2006 Bull S.A.S.
* Contact: easybeans@ow2.org
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
* --------------------------------------------------------------------------
* $Id: JNDIBinderHelper.java 5369 2010-02-24 14:58:19Z benoitf $
* --------------------------------------------------------------------------
*/
package org.ow2.easybeans.injection;
import java.net.URL;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.LinkRef;
import javax.naming.NamingException;
import javax.naming.Reference;
import javax.naming.StringRefAddr;
import org.ow2.easybeans.naming.url.URLFactory;
import org.ow2.util.log.Log;
import org.ow2.util.log.LogFactory;
/**
* Helper class for injecting an object in JNDI (ENC env).
* @author Florent Benoit
*/
public final class JNDIBinderHelper {
/**
* Type of lookup available.
*/
public enum JndiType {JAVA_COMP_ENV}
/**
* Comp prefix.
*/
private static final String JAVA_COMP = "java:comp/";
/**
* ENV prefix.
*/
private static final String JAVA_COMP_ENV = JAVA_COMP + "env";
/**
* Logger.
*/
private static Log logger = LogFactory.getLog(JNDIBinderHelper.class);
/**
* Utility class, no public constructor.
*/
private JNDIBinderHelper() {
}
/**
* Gets the context for a given name (java: , java:comp, etc).
* @param name the name of the context to lookup
* @return context found or null.
*/
public static Context getContext(final String name) {
InitialContext ictx;
try {
ictx = new InitialContext();
} catch (NamingException e) {
logger.error("Cannot instantiate an initial context", e);
return null;
}
Object o = null;
try {
o = ictx.lookup(name);
} catch (NamingException e) {
logger.error("Cannot find the JNDI name {0}", name, e);
}
if (o == null) {
logger.error("No object was found for JNDI name {0}", name);
}
Context ctx = null;
if (o instanceof Context) {
ctx = (Context) o;
} else {
logger.error("Object not instance of context. Object = {0}", o);
}
return ctx;
}
/**
* Bind a JNDI name object in java:comp/env/.
* @param encName the name of the object to bind in enc
* @param jndiName the jndi name to link.
*/
public static void bindLinkRefEnvJndiName(final String encName, final String jndiName) {
try {
getContext(JAVA_COMP_ENV).rebind(encName, new LinkRef(jndiName));
} catch (NamingException e) {
logger.error("Cannot do a LinkRef between jndiName {0} with ENC name {1}", jndiName, encName, e);
}
}
/**
* Bind a JNDI name object in java:comp/env/.
* @param name the name of the object to bind.
* @param object the value of the object.
*/
public static void bindEnvJndiName(final String name, final Object object) {
// Avoid to bind a null object
if (object == null) {
logger.error("Cannot bind a null object with name {0}", name);
return;
}
try {
getContext(JAVA_COMP_ENV).rebind(name, object);
} catch (NamingException e) {
logger.error("Cannot bind object {0} with name {1}", object, name, e);
}
}
/**
* Bind an URL object in java:comp/env.
* @param encName the name of the object to bind in enc
* @param url the URL to register in the context
*/
public static void bindLinkRefEnvURL(final String encName, final String url) {
// Specify the factory to use with the right URL
Reference ref = new Reference(URL.class.getName(), URLFactory.class.getName(), null);
StringRefAddr refAddr = new StringRefAddr("url", url);
ref.add(refAddr);
try {
getContext(JAVA_COMP_ENV).rebind(encName, ref);
} catch (NamingException e) {
logger.error("Cannot bind an URL with name {0} with ENC name {1}", url, encName, e);
}
}
}