/**
* Copyright 1996-2013 Founder International Co.,Ltd.
*
* 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.
*
* @author kenshin
*/
package com.founder.fix.fixflow.expand.cmd;
import java.util.List;
import org.eclipse.bpmn2.UserTask;
import com.founder.fix.fixflow.core.exception.FixFlowException;
import com.founder.fix.fixflow.core.impl.bpmn.behavior.TaskCommandInst;
import com.founder.fix.fixflow.core.impl.bpmn.behavior.UserTaskBehavior;
import com.founder.fix.fixflow.core.impl.cmd.AbstractExpandTaskCmd;
import com.founder.fix.fixflow.core.impl.cmd.GetRollBackTaskCmd;
import com.founder.fix.fixflow.core.impl.expression.ExpressionMgmt;
import com.founder.fix.fixflow.core.impl.interceptor.CommandContext;
import com.founder.fix.fixflow.core.impl.task.TaskInstanceEntity;
import com.founder.fix.fixflow.core.runtime.ExecutionContext;
import com.founder.fix.fixflow.core.task.TaskInstance;
import com.founder.fix.fixflow.expand.command.RollBackTaskByExpressionCommand;
public class RollBackTaskByExpressionCmd extends AbstractExpandTaskCmd<RollBackTaskByExpressionCommand, Void> {
public RollBackTaskByExpressionCmd(RollBackTaskByExpressionCommand rollBackTaskByTaskIdCommand) {
super(rollBackTaskByTaskIdCommand);
// TODO Auto-generated constructor stub
}
public Void execute(CommandContext commandContext) {
// 初始化任务命令执行所需要的常用对象
loadProcessParameter(commandContext);
// 将外部变量注册到流程实例运行环境中
addVariable();
// 执行处理命令中的开发人员设置的表达式
//runCommandExpression();
// 获取正在操作的任务实例对象
TaskInstanceEntity taskInstance = getTaskInstanceEntity();
// 获取正在操作的任务命令对象实例
TaskCommandInst taskCommand = getTaskCommandInst();
List<TaskInstance> taskInstanceQueryTos = (new GetRollBackTaskCmd(this.taskId)).execute(commandContext);
UserTask userTask=(UserTask)taskInstance.getToken().getFlowNode();
ExecutionContext executionContext = getExecutionContext();
Object expressionValue = null;
if (taskCommand != null && taskCommand.getExpression() != null) {
try {
expressionValue = ExpressionMgmt.execute(taskCommand.getExpression(), executionContext);
} catch (Exception e) {
throw new FixFlowException(taskInstance.getToken().getFlowNode().getName()+ " 节点,用户命令表达式执行异常!", e);
}
}
String rollBackNodeId = null;
if (expressionValue != null && !expressionValue.equals("")) {
rollBackNodeId = expressionValue.toString();
} else {
throw new FixFlowException("没有在表达式中指定退回节点!");
}
TaskInstance taskInstanceQueryRollBack = null;
for (TaskInstance taskInstanceQueryTo : taskInstanceQueryTos) {
if (taskInstanceQueryTo.getNodeId().equals(rollBackNodeId)) {
taskInstanceQueryRollBack = taskInstanceQueryTo;
break;
}
}
if (taskInstanceQueryRollBack == null) {
throw new FixFlowException(userTask.getId() + " 节点的退回命令上退回节点设置错误!");
}
String taskId = this.taskId;
String taskComment = this.taskComment;
if (taskInstanceQueryRollBack.getTaskGroup() != null) {
try {
UserTaskBehavior backNodeUserTask = (UserTaskBehavior) executionContext.getProcessDefinition().getDefinitions().getElement(rollBackNodeId);
taskInstance.toFlowNodeEnd(taskCommand, taskComment, backNodeUserTask, null);
} catch (Exception e) {
throw new FixFlowException("任务: " + taskId + " 退回失败!", e);
}
try {
saveProcessInstance(commandContext);
} catch (Exception e) {
throw new FixFlowException("流程实例持久化失败!", e);
}
return null;
} else {
try {
UserTaskBehavior backNodeUserTask = (UserTaskBehavior) executionContext.getProcessDefinition().getDefinitions().getElement(rollBackNodeId);
taskInstance.toFlowNodeEnd(taskCommand, taskComment, backNodeUserTask, taskInstanceQueryRollBack.getAssignee());
} catch (Exception e) {
throw new FixFlowException("任务: " + taskId + " 退回失败!", e);
}
try {
saveProcessInstance(commandContext);
} catch (Exception e) {
throw new FixFlowException("流程实例持久化失败!", e);
}
return null;
}
}
}