/**
 * 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.jstorm.batch.util;

public enum BatchStatus {
    COMPUTING, PREPARE_COMMIT, COMMIT, REVERT_COMMIT, POST_COMMIT, ERROR;

    public BatchStatus forward() {
        if (this == COMPUTING) {
            return PREPARE_COMMIT;
        } else if (this == PREPARE_COMMIT) {
            return COMMIT;
        } else if (this == COMMIT) {
            return POST_COMMIT;
        } else {
            return null;
        }
    }

    public BatchStatus error() {
        if (this == COMMIT) {
            return REVERT_COMMIT;
        } else {
            return ERROR;
        }
    }
}