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    
018    package org.apache.logging.log4j.core.util;
019    
020    import java.io.IOException;
021    import java.net.URL;
022    import java.util.Enumeration;
023    
024    import org.osgi.framework.Bundle;
025    
026    /**
027     * Bundle-based ResourceLoader.
028     */
029    public final class BundleResourceLoader implements ResourceLoader {
030    
031        private final Bundle bundle;
032    
033        public BundleResourceLoader(final Bundle bundle) {
034            this.bundle = bundle;
035        }
036    
037        @Override
038        public Class<?> loadClass(final String name) throws ClassNotFoundException {
039            return bundle.loadClass(name);
040        }
041    
042        @Override
043        public URL getResource(final String name) {
044            return bundle.getResource(name);
045        }
046    
047        @Override
048        public Enumeration<URL> getResources(final String name) throws IOException {
049            @SuppressWarnings("unchecked") // some versions of the OSGi API are using raw types
050            final Enumeration<URL> enumeration = bundle.getResources(name);
051            return enumeration;
052        }
053    
054        @Override
055        public String toString() {
056            return this.getClass().getCanonicalName() + ": " + bundle.getSymbolicName();
057        }
058    }