content: /*
   * Tencent is pleased to support the open source community by making Angel available.
   *
   * Copyright (C) 2017-2018 THL A29 Limited, a Tencent company. All rights reserved.
   *
   * 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
   *
   * https://opensource.org/licenses/Apache-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.tencent.angel.worker.task;
  
  import com.tencent.angel.exception.AngelException;
  
  /**
   * The interface base task.
   *
   * @param <KEYIN>    the key type
   * @param <VALUEIN>  the value type
   * @param <VALUEOUT> the parsed value type
   */
  public interface BaseTaskInterface<KEYIN, VALUEIN, VALUEOUT> {
    /**
     * Parse valueout.
     *
     * @param key   the key
     * @param value the value
     * @return the valueout
     */
    VALUEOUT parse(KEYIN key, VALUEIN value);
  
    /**
     * Pre process.
     *
     * @param taskContext the task context
     */
    void preProcess(TaskContext taskContext);
  
    /**
     * Run.
     *
     * @param taskContext the task context
     * @throws Exception
     */
    void run(TaskContext taskContext) throws AngelException;
  }
  