001    /**
002     *
003     * Copyright 2005 The Apache Software Foundation
004     *
005     *  Licensed under the Apache License, Version 2.0 (the "License");
006     *  you may not use this file except in compliance with the License.
007     *  You may obtain a copy of the License at
008     *
009     *     http://www.apache.org/licenses/LICENSE-2.0
010     *
011     *  Unless required by applicable law or agreed to in writing, software
012     *  distributed under the License is distributed on an "AS IS" BASIS,
013     *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     *  See the License for the specific language governing permissions and
015     *  limitations under the License.
016     */
017    package org.apache.geronimo.kernel.classloader;
018    
019    import java.util.jar.Manifest;
020    import java.util.jar.JarFile;
021    import java.util.jar.JarEntry;
022    import java.net.URL;
023    import java.net.MalformedURLException;
024    import java.io.IOException;
025    
026    /**
027     * @version $Rev: 410741 $ $Date: 2006-05-31 21:35:48 -0700 (Wed, 31 May 2006) $
028     */
029    public class JarResourceLocation extends AbstractUrlResourceLocation  {
030        private final JarFile jarFile;
031    
032        public JarResourceLocation(URL codeSource, JarFile jarFile) {
033            super(codeSource);
034            this.jarFile = jarFile;
035        }
036    
037        public ResourceHandle getResourceHandle(String resourceName) {
038            JarEntry jarEntry = jarFile.getJarEntry(resourceName);
039            if (jarEntry != null) {
040                try {
041                    URL url = new URL(getCodeSource(), resourceName);
042                    return new JarResourceHandle(jarFile, jarEntry, getCodeSource());
043                } catch (MalformedURLException e) {
044                }
045            }
046            return null;
047        }
048    
049        public Manifest getManifest() throws IOException {
050            return jarFile.getManifest();
051        }
052    
053        public void close() {
054            IoUtil.close(jarFile);
055        }
056    }