ResourceResolver.java

/*
 * Copyright 2013 eXo Platform SAS
 *
 * 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 juzu.impl.resource;

import java.net.URL;

/** @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a> */
public interface ResourceResolver {

  /**
   * A resolver that always returns null.
   */
  ResourceResolver NULL_RESOLVER = new ResourceResolver() {

    /**
     * @param uri the resource uri
     * @return always null
     */
    public URL resolve(String uri) {
      return null;
    }
  };

  /**
   * Resolve the uri as a resource, it returns null when resolution cannot be performed.
   *
   * @param uri the uri
   * @return the related resource
   */
  URL resolve(String uri);

}