ResourceURLFactory.java

/*
 * 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.cocoon.components.url;

import org.apache.avalon.framework.context.Context;
import org.apache.avalon.framework.context.ContextException;
import org.apache.avalon.framework.context.Contextualizable;
import org.apache.avalon.framework.logger.AbstractLogEnabled;

import org.apache.cocoon.util.ClassUtils;

import java.net.MalformedURLException;
import java.net.URL;

/**
 * @deprecated by the new source resolving of avalon excalibur
 *
 * @author <a href="mailto:giacomo@apache.org">Giacomo Pati</a>
 * @version CVS $Id$
 */
public class ResourceURLFactory extends AbstractLogEnabled implements URLFactory, Contextualizable {

    /**
     * The context
     */
    protected Context context;

    /**
     * Create a URL from a location. This method supports the
     * <i>resource://</i> pseudo-protocol for loading resources
     * accessible to this same class' <code>ClassLoader</code>
     *
     * @param location The location
     * @return The URL pointed to by the location
     * @exception MalformedURLException If the location is malformed
     */
    public URL getURL(String location) throws MalformedURLException {
        URL u = ClassUtils.getResource(location);
        if (u != null)
            return u;
        else {
            getLogger().error(location + " could not be found. (possible classloader problem)");
            throw new RuntimeException(location + " could not be found. (possible classloader problem)");
        }
    }

    public URL getURL(URL base, String location) throws MalformedURLException {
        return getURL (base.toExternalForm() + location);
    }

    /**
     * Get the context
     */
    public void contextualize(Context context) throws ContextException {
        if (this.context == null) {
            this.context = context;
        }
    }
}