001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements.  See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership.  The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the
007     * "License"); you may not use this file except in compliance
008     * with the License.  You may obtain a copy of the License at
009     *
010     *      http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing, software
013     * distributed under the License is distributed on an "AS IS" BASIS,
014     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015     * See the License for the specific language governing permissions and
016     * limitations under the License.
017     */
018    
019    package org.apache.oozie.action.hadoop;
020    
021    /**
022     * Abstract class that represents the statistics for any type of Oozie action.
023     */
024    public abstract class ActionStats {
025        protected ActionType currentActionType;
026    
027        /**
028         * Return the statistics in JSON format. Sub-classes must override this
029         * method to provide statistics for their particular action type.
030         *
031         * @return a JSON string with the statistics information.
032         */
033        public abstract String toJSON();
034    
035        public ActionType getCurrentActionType() {
036            return currentActionType;
037        }
038    }