WABResourceMapper.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.felix.ipojo.manipulator.store.mapper;

import java.util.ArrayList;
import java.util.List;

import org.apache.felix.ipojo.manipulator.store.ResourceMapper;

/**
 * A {@code WABResourceMapper} knows how to map resource names for a Web Application Bundle (WAB).
 *
 * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a>
 */
public class WABResourceMapper implements ResourceMapper {

    public static final String WEB_INF_CLASSES = "WEB-INF/classes/";

    /**
     * Store externalized names so that internalize can rebuild the good resource name.
     */
    private List<String> mappedNames = new ArrayList<String>();

    public String internalize(String name) {
        if (mappedNames.contains(name)) {
            return WEB_INF_CLASSES + name;
        }
        return name;
    }

    public String externalize(String name) {
        if (name.startsWith(WEB_INF_CLASSES)) {
            String externalized = name.substring(WEB_INF_CLASSES.length());
            mappedNames.add(externalized);
            return externalized;
        }
        // Leave the name unchanged
        // (it's probably META-INF/** or WEB-INF/lib/**)
        return name;
    }
}