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/* 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 org.activiti.engine.history;

import java.util.Date;

import org.activiti.engine.task.TaskInfoQuery;


/**
 * Allows programmatic querying for {@link HistoricTaskInstance}s.
 * 
 * @author Tom Baeyens
 * @author Joram Barrez
 */
public interface HistoricTaskInstanceQuery extends TaskInfoQuery {  

  /** Only select historic task instances with the given task delete reason. */
  HistoricTaskInstanceQuery taskDeleteReason(String taskDeleteReason);
  
  /** 
   * Only select historic task instances with a task description like the given value.
   * The syntax that should be used is the same as in SQL, eg. %activiti%.
   */
  HistoricTaskInstanceQuery taskDeleteReasonLike(String taskDeleteReasonLike);
  
  /** 
   * Only select historic task instances which are finished.
   */
  HistoricTaskInstanceQuery finished();
  
  /** 
   * Only select historic task instances which aren't finished yet.
   */
  HistoricTaskInstanceQuery unfinished();
  
  /**
   * Only select historic task instances which are part of a process
   * instance which is already finished. 
   */
  HistoricTaskInstanceQuery processFinished();
  
  /**
   * Only select historic task instances which are part of a process
   * instance which is not finished yet. 
   */
  HistoricTaskInstanceQuery processUnfinished();
  
  /** Only select subtasks of the given parent task */
  HistoricTaskInstanceQuery taskParentTaskId(String parentTaskId);

  /**
   * Only select select historic task instances which are completed on the given date
   */
  HistoricTaskInstanceQuery taskCompletedOn(Date endDate);
  
  /**
   * Only select select historic task instances which are completed before the given date
   */
  HistoricTaskInstanceQuery taskCompletedBefore(Date endDate);
  
  /**
   * Only select select historic task instances which are completed after the given date
   */
  HistoricTaskInstanceQuery taskCompletedAfter(Date endDate);
  
  
  // ORDERING
  
  
  /** 
   * Order by the historic activity instance id this task was used in
   * (needs to be followed by {@link #asc()} or {@link #desc()}). 
   */
  HistoricTaskInstanceQuery orderByHistoricActivityInstanceId();
  
  /** Order by duration (needs to be followed by {@link #asc()} or {@link #desc()}). */
  HistoricTaskInstanceQuery orderByHistoricTaskInstanceDuration();
  
  /** Order by end time (needs to be followed by {@link #asc()} or {@link #desc()}). */
  HistoricTaskInstanceQuery orderByHistoricTaskInstanceEndTime();
  
  /** Order by start time (needs to be followed by {@link #asc()} or {@link #desc()}). 
   * @deprecated use {@link #orderByHistoricTaskInstanceStartTime()} */
  @Deprecated
  HistoricTaskInstanceQuery orderByHistoricActivityInstanceStartTime();
  
  /**
   *  Order by start time (needs to be followed by {@link #asc()} or {@link #desc()}).
   *  @deprecated Use {@link #orderByTaskCreateTime()}
   */
  HistoricTaskInstanceQuery orderByHistoricTaskInstanceStartTime();
  
  /** Order by task delete reason (needs to be followed by {@link #asc()} or {@link #desc()}). */
  HistoricTaskInstanceQuery orderByDeleteReason();

}