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 */
017package org.apache.xbean.classloader;
018
019import java.io.IOException;
020import java.io.InputStream;
021import java.security.cert.Certificate;
022import java.util.jar.Attributes;
023import java.util.jar.Manifest;
024
025/**
026 * @version $Rev: 437551 $ $Date: 2006-08-28 08:14:47 +0200 (lun. 28 ao?t 2006) $
027 */
028public 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}