com.sun.enterprise.connectors.util.ConnectorRARClassLoader Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of payara-client Show documentation
Appclient for Payara Server
The newest version!
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package com.sun.enterprise.connectors.util;

import java.security.SecureClassLoader;

/**
 * ConnectorRARClassLoader finds classes and resources from a 
 * JAR file without exploding it. This uses the JarResourceExtractor
 * for finding classes and resources inside the archive
 * 
 * This classloader is _used_ only by the admin GUI to retrieve resource
 * adapter class properties without exploding the connector archive.
 *  
 * @author Sivakumar Thyagarajan
 */
public class ConnectorRARClassLoader extends SecureClassLoader{
    private JarResourceExtractor jarResources;
    
    public ConnectorRARClassLoader(String jarName, ClassLoader parent) {
        super(parent);
        // Create the JarResource and suck in the .jar file.
        jarResources = new JarResourceExtractor(jarName);
    }
    
    protected byte[] loadClassBytes(String className) {
        className = formatClassName(className);
        return (jarResources.getResource(className));
    }

    public Class findClass(String name) throws ClassNotFoundException {
        byte[] b = loadClassBytes(name);
        if (b == null) {
            throw new ClassNotFoundException(name);
        }
        return defineClass(name, b, 0, b.length);
    }

    private String formatClassName(String className) {
        return className.replace('.', '/') + ".class";
    }

    public String getResourceAsString(String raDeploymentDescPath) {
        return new String(jarResources.getResource(raDeploymentDescPath));
    }    
    
}