content: /*
   * Copyright (c) 2024, Alibaba Cloud;
   * 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 com.aliyun.dataworks.migrationx.transformer.core.annotation;
  
  import com.aliyun.dataworks.migrationx.transformer.core.controller.Task;
  
  import java.lang.annotation.ElementType;
  import java.lang.annotation.Retention;
  import java.lang.annotation.RetentionPolicy;
  import java.lang.annotation.Target;
  
  /**
   * Task的依赖关系注解
   *
   * @author sam.liux
   * @date 2019/08/30
   */
  @Retention(RetentionPolicy.RUNTIME)
  @Target(ElementType.FIELD)
  public @interface DependsOn {
      /**
       * Task的标识，用户在tasks map中定位唯一的task
       *
       * @return
       */
      String qualifier() default "";
  
      /**
       * 根据任务的类型依赖
       *
       * @return
       */
      Class<? extends Task<?>>[] types() default {};
  }
  