VersionedResource.java

/*
 * Copyright (C) 2013 Google Inc.
 *
 * 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 interactivespaces.resource;

/**
 * A resource which has a {@link Version}.
 *
 * @author Keith M. Hughes
 */
public interface VersionedResource {

  /**
   * Get the version of the resource.
   *
   * <p>
   * It can be {@code null}, leaving it up to the consumer to decide what to do.
   *
   * @return the version
   */
  Version getVersion();
}