/*
* Copyright 2013 The Sculptor Project Team, including the original
* author or authors.
*
* Licensed 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.sculptor.maven.plugin;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.Set;
/**
* This {@link URLClassLoader} alters regular class loader delegation and will
* check the URLs used in its initialization for matching resoures before
* delegating to its parent.
*/
public class ResourceChildFirstURLClassLoader extends URLClassLoader {
public ResourceChildFirstURLClassLoader(Set<URL> urls, ClassLoader parentClassLoader) {
super(urls.toArray(new URL[0]), parentClassLoader);
}
@Override
public URL getResource(final String name) {
URL resource = findResource(name);
if (resource == null) {
ClassLoader parent = getParent();
if (parent != null) {
resource = parent.getResource(name);
}
}
return resource;
}
}