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.camel.component;
018    
019    import java.io.IOException;
020    import java.io.InputStream;
021    import java.net.URL;
022    
023    import org.apache.camel.spi.ClassResolver;
024    import org.springframework.core.io.ClassPathResource;
025    import org.springframework.util.Assert;
026    
027    /**
028     * Camel specific {@link ClassPathResource} which uses the {@link ClassResolver} to load resources from the classpath.
029     */
030    public class CamelClassPathResource extends ClassPathResource {
031    
032        private final ClassResolver resolver;
033    
034        public CamelClassPathResource(ClassResolver resolver, String path, ClassLoader classLoader) {
035            super(path, classLoader);
036            Assert.notNull(resolver, "Resolver must not be null");
037            this.resolver = resolver;
038        }
039    
040        @Override
041        public InputStream getInputStream() throws IOException {
042            InputStream is = resolver.loadResourceAsStream(getPath());
043            if (is == null) {
044                return super.getInputStream();
045            } else {
046                return is;
047            }
048        }
049    
050        @Override
051        public URL getURL() throws IOException {
052            URL url = resolver.loadResourceAsURL(getPath());
053            if (url == null) {
054                return super.getURL();
055            } else {
056                return url;
057            }
058        }
059    }