001    /**
002     *  Licensed to the Apache Software Foundation (ASF) under one or more
003     *  contributor license agreements.  See the NOTICE file distributed with
004     *  this work for additional information regarding copyright ownership.
005     *  The ASF licenses this file to You under the Apache License, Version 2.0
006     *  (the "License"); you may not use this file except in compliance with
007     *  the License.  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.io.IOException;
020    import java.io.InputStream;
021    import java.security.cert.Certificate;
022    import java.util.jar.Attributes;
023    import java.util.jar.Manifest;
024    
025    /**
026     * @version $Rev: 706640 $ $Date: 2008-10-21 14:44:05 +0000 (Tue, 21 Oct 2008) $
027     */
028    public abstract class AbstractResourceHandle implements ResourceHandle {
029        public byte[] getBytes() throws IOException {
030            InputStream in = getInputStream();
031            try {
032                byte[] bytes = IoUtil.getBytes(in);
033                return bytes;
034            } finally {
035                IoUtil.close(in);
036            }
037        }
038    
039        public Manifest getManifest() throws IOException {
040            return null;
041        }
042    
043        public Certificate[] getCertificates() {
044            return null;
045        }
046    
047        public Attributes getAttributes() throws IOException {
048            Manifest m = getManifest();
049            if (m == null) {
050                return null;
051            }
052    
053            String entry = getUrl().getFile();
054            return m.getAttributes(entry);
055        }
056    
057        public void close() {
058        }
059    
060        public String toString() {
061            return "[" + getName() + ": " + getUrl() + "; code source: " + getCodeSourceUrl() + "]";
062        }
063    }