content: /**
   * 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 com.alibaba.wasp;
  
  import org.apache.hadoop.classification.InterfaceAudience;
  
  import java.lang.annotation.ElementType;
  import java.lang.annotation.Retention;
  import java.lang.annotation.RetentionPolicy;
  import java.lang.annotation.Target;
  
  /**
   * A package attribute that captures the version of wasp that was compiled.
   * Copied down from hadoop.  All is same except name of interface.
   */
  @Retention(RetentionPolicy.RUNTIME)
  @Target(ElementType.PACKAGE)
  @InterfaceAudience.Private
  public @interface VersionAnnotation {
  
    /**
     * Get the Hadoop version
     * @return the version string "0.6.3-dev"
     */
    String version();
  
    /**
     * Get the username that compiled Hadoop.
     */
    String user();
  
    /**
     * Get the date when Hadoop was compiled.
     * @return the date in unix 'date' format
     */
    String date();
  
    /**
     * Get the url for the subversion repository.
     */
    String url();
  
    /**
     * Get the subversion revision.
     * @return the revision number as a string (eg. "451451")
     */
    String revision();
  }
  