org.apache.maven.plugin.resources.remote.RemoteResourcesClassLoader Maven / Gradle / Ivy

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Process resources packaged in JARs that have been deployed to a remote repository. The primary use case being satisfied is the consistent inclusion of common resources in a large set of projects. Maven projects at Apache use this plug-in to satisfy licensing requirements at Apache where each project must include license and notice files for each release.

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.plugin.resources.remote;

import java.net.URL;
import java.net.URLClassLoader;

/**
 * @author Jason van Zyl
 */
public class RemoteResourcesClassLoader extends URLClassLoader {
    public RemoteResourcesClassLoader(ClassLoader parent) {
        super(new URL[] {}, parent);
    }

    @Override
    public void addURL(URL url) {
        super.addURL(url);
    }

    // don't check the parents for the resources.   Just check the jars
    // that we have provided.   Thus, we don't pull junk from the
    // system classpath jars and stuff instead of the jars
    // we specifically provided
    @Override
    public URL getResource(String name) {
        URL url = findResource(name);
        if (url == null) {
            url = super.getResource(name);
        }
        return url;
    }
}