/*
    * 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 org.apache.syncope.core.persistence.jpa.entity.task;
  
  import java.util.List;
  import javax.persistence.MappedSuperclass;
  import org.apache.syncope.core.persistence.api.entity.task.Task;
  import org.apache.syncope.core.persistence.api.entity.task.TaskExec;
  import org.apache.syncope.core.persistence.jpa.entity.AbstractGeneratedKeyEntity;
  
  @MappedSuperclass
  public abstract class AbstractTask<T extends Task<T>> extends AbstractGeneratedKeyEntity implements Task<T> {
  
      private static final long serialVersionUID = 5837401178128177511L;
  
      protected abstract List<TaskExec<T>> executions();
  
      protected abstract Class<? extends TaskExec<T>> executionClass();
  
      @Override
      public boolean add(final TaskExec<T> exec) {
          Class<? extends TaskExec<T>> clazz = executionClass();
          checkType(exec, clazz);
          return exec != null
                  && !executions().contains(clazz.cast(exec))
                  && executions().add(clazz.cast(exec));
      }
  
      @Override
      public List<? extends TaskExec<T>> getExecs() {
          return executions();
      }
  }