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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.impl.persistence.entity;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.activiti.engine.ActivitiObjectNotFoundException;
import org.activiti.engine.impl.AbstractVariableQueryImpl;
import org.activiti.engine.impl.Page;
import org.activiti.engine.impl.context.Context;
import org.activiti.engine.impl.interceptor.CommandContext;
import org.activiti.engine.impl.persistence.AbstractManager;
import org.activiti.engine.runtime.Execution;
import org.activiti.engine.runtime.ProcessInstance;


/**
 * @author Tom Baeyens
 */
public class ExecutionEntityManager extends AbstractManager {
  
  @SuppressWarnings("unchecked")
  public void deleteProcessInstancesByProcessDefinition(String processDefinitionId, String deleteReason, boolean cascade,String bussinessOperation,String bussinessRemark) {
    List processInstanceIds = getDbSqlSession()
      .selectList("selectProcessInstanceIdsByProcessDefinitionId", processDefinitionId);
  
    for (String processInstanceId: processInstanceIds) {
      deleteProcessInstance(processInstanceId, deleteReason, cascade,  bussinessOperation,  bussinessRemark);
    }
    
    if (cascade) {
      Context
        .getCommandContext()
        .getHistoricProcessInstanceEntityManager()
        .deleteHistoricProcessInstanceByProcessDefinitionId(processDefinitionId);
    }
  }

  public void deleteProcessInstance(String processInstanceId, String deleteReason,String bussinessOperation,String bussinessRemark) {
    deleteProcessInstance(processInstanceId, deleteReason, false,  bussinessOperation,  bussinessRemark);
  }

  public void deleteProcessInstance(String processInstanceId, String deleteReason, boolean cascade,String bussinessOperation,String bussinessRemark) {
    ExecutionEntity execution = findExecutionById(processInstanceId);
    
    if(execution == null) {
      throw new ActivitiObjectNotFoundException("No process instance found for id '" + processInstanceId + "'", ProcessInstance.class);
    }
    execution.setDeleteReason(deleteReason);
    execution.setBussinessop(bussinessOperation);
    execution.setBussinessRemark(bussinessRemark);
//    execution.initializeLogs();
    CommandContext commandContext = Context.getCommandContext();
    commandContext
      .getTaskEntityManager()
      .deleteTasksByProcessInstanceId(processInstanceId, deleteReason, cascade,  bussinessOperation,  bussinessRemark);
    
    // delete the execution BEFORE we delete the history, otherwise we will produce orphan HistoricVariableInstance instances
    execution.deleteCascade(deleteReason, bussinessOperation,  bussinessRemark);
//    Context.getProcessEngineConfiguration().getKPIService().archiveProcessRuntimedata(execution, processInstanceId);
    if (cascade) {
      commandContext
      .getHistoricProcessInstanceEntityManager()
      .deleteHistoricProcessInstanceById(processInstanceId);
    }
  }

  public ExecutionEntity findSubProcessInstanceBySuperExecutionId(String superExecutionId) {
    return (ExecutionEntity) getDbSqlSession().selectOne("selectSubProcessInstanceBySuperExecutionId", superExecutionId);
  }
  
  @SuppressWarnings("unchecked")
  public List findChildExecutionsByParentExecutionId(String parentExecutionId) {
    return getDbSqlSession().selectList("selectExecutionsByParentExecutionId", parentExecutionId);
  }
  
  @SuppressWarnings("unchecked")
  public List findChildExecutionsByProcessInstanceId(String processInstanceId) {
    return getDbSqlSession().selectList("selectExecutionsByProcessInstanceId", processInstanceId);
  }

  public ExecutionEntity findExecutionById(String executionId) {
    return (ExecutionEntity) getDbSqlSession().selectById(ExecutionEntity.class, executionId);
  }
  
  public long findExecutionCountByQueryCriteria(AbstractVariableQueryImpl executionQuery) {
    return (Long) getDbSqlSession().selectOne("selectExecutionCountByQueryCriteria", executionQuery);
  }

  @SuppressWarnings("unchecked")
  public List findExecutionsByQueryCriteria(AbstractVariableQueryImpl executionQuery, Page page) {
    return getDbSqlSession().selectList("selectExecutionsByQueryCriteria", executionQuery, page);
  }

  public long findProcessInstanceCountByQueryCriteria(AbstractVariableQueryImpl executionQuery) {
    return (Long) getDbSqlSession().selectOne("selectProcessInstanceCountByQueryCriteria", executionQuery);
  }
  
  @SuppressWarnings("unchecked")
  public List findProcessInstanceByQueryCriteria(AbstractVariableQueryImpl executionQuery, Page page) {
    return getDbSqlSession().selectList("selectProcessInstanceByQueryCriteria", executionQuery, page);
  }

  @SuppressWarnings("unchecked")
  public List findEventScopeExecutionsByActivityId(String activityRef, String parentExecutionId) {
    Map parameters = new HashMap();
    parameters.put("activityId", activityRef);
    parameters.put("parentExecutionId", parentExecutionId);
    return getDbSqlSession().selectList("selectExecutionsByParentExecutionId", parameters);
  }

  @SuppressWarnings("unchecked")
  public List findExecutionsByNativeQuery(Map parameterMap, int firstResult, int maxResults) {
    return getDbSqlSession().selectListWithRawParameter("selectExecutionByNativeQuery", parameterMap, firstResult, maxResults);
  }

  @SuppressWarnings("unchecked")
  public List findProcessInstanceByNativeQuery(Map parameterMap, int firstResult, int maxResults) {
    return getDbSqlSession().selectListWithRawParameter("selectExecutionByNativeQuery", parameterMap, firstResult, maxResults);
  }

  public long findExecutionCountByNativeQuery(Map parameterMap) {
    return (Long) getDbSqlSession().selectOne("selectExecutionCountByNativeQuery", parameterMap);
  }

}