/// <summary>
/// 返回taskinstance (共21个字段)
/// </summary>
/// <param name="rs"></param>
/// <param name="rowNum"></param>
/// <returns></returns>
public static ITaskInstance GetTaskInstance(IDataReader dr)
{
ITaskInstance taskInstance = new TaskInstance();
taskInstance.Id=Convert.ToString(dr["id"]);
// 20090922 wmj2003 没有给biz_type赋值 是否需要给基于jdbc的数据增加 setBizType()方法？
taskInstance.TaskId=Convert.ToString(dr["task_id"]);
taskInstance.ActivityId=Convert.ToString(dr["activity_id"]);
taskInstance.Name=Convert.ToString(dr["name"]);
taskInstance.DisplayName=Convert.ToString(dr["display_name"]);
taskInstance.State=(TaskInstanceStateEnum)Convert.ToInt32(dr["state"]);
taskInstance.Suspended=Convert.ToInt32(dr["suspended"]) == 1 ? true : false;
taskInstance.TaskType=(TaskTypeEnum)Enum.Parse(typeof(TaskTypeEnum),Convert.ToString(dr["task_type"]));
if (!(dr["created_time"] is DBNull)) taskInstance.CreatedTime=Convert.ToDateTime(dr["created_time"]);
if (!(dr["started_time"] is DBNull)) taskInstance.StartedTime = Convert.ToDateTime(dr["started_time"]);
if (!(dr["end_time"] is DBNull)) taskInstance.EndTime = Convert.ToDateTime(dr["end_time"]);
if (!(dr["expired_time"] is DBNull)) taskInstance.ExpiredTime = Convert.ToDateTime(dr["expired_time"]);
taskInstance.AssignmentStrategy=(FormTaskEnum)Enum.Parse(typeof(FormTaskEnum), Convert.ToString((dr["assignment_strategy"])));
taskInstance.ProcessInstanceId=Convert.ToString(dr["processinstance_id"]);
taskInstance.ProcessId=Convert.ToString(dr["process_id"]);
taskInstance.Version=Convert.ToInt32(dr["version"]);
taskInstance.TargetActivityId=Convert.ToString(dr["target_activity_id"]);
taskInstance.FromActivityId=Convert.ToString(dr["from_activity_id"]);
taskInstance.StepNumber=Convert.ToInt32(dr["step_number"]);
taskInstance.CanBeWithdrawn=Convert.ToInt32(dr["can_be_withdrawn"]) == 1 ? true : false;
taskInstance.BizInfo = Convert.ToString(dr["biz_info"]);
return taskInstance;
}
/// <summary>
/// <para>结束当前WorkItem；并由工作流引擎根据流程定义决定下一步操作。引擎的执行规则如下</para>
/// <para>1、工作流引擎首先判断该WorkItem对应的TaskInstance是否可以结束。</para>
/// <para> 如果TaskInstance的assignment策略为ANY，或者，assignment策略为ALL且它所有的WorkItem都已经完成</para>
/// <para> 则结束当前TaskInstance</para>
/// <para>2、判断TaskInstance对应的ActivityInstance是否可以结束。如果ActivityInstance的complete strategy为ANY，</para>
/// <para> 或者，complete strategy为ALL且他的所有的TaskInstance都已经结束，则结束当前ActivityInstance</para>
/// <para>3、根据流程定义，启动下一个Activity，并创建相关的TaskInstance和WorkItem</para>
/// </summary>
/// <param name="dynamicAssignmentHandler">通过动态分配句柄指定下一个环节的操作者。</param>
/// <param name="comments">备注信息</param>
public void complete(DynamicAssignmentHandler dynamicAssignmentHandler, String comments)
{
if (this._workflowSession == null)
{
new EngineException(this.TaskInstance.ProcessInstanceId,
this.TaskInstance.WorkflowProcess, this.TaskInstance.TaskId,
"The current workflow session is null.");
}
if (this.RuntimeContext == null)
{
new EngineException(this.TaskInstance.ProcessInstanceId,
this.TaskInstance.WorkflowProcess, this.TaskInstance.TaskId,
"The current runtime context is null.");
}
if (this.State != WorkItemEnum.RUNNING)
{
TaskInstance thisTaskInst = (TaskInstance)this.TaskInstance;
// System.out.println("WorkItem的当前状态为"+this.State+"，不可以执行complete操作。");
throw new EngineException(thisTaskInst.ProcessInstanceId, thisTaskInst.WorkflowProcess, thisTaskInst.TaskId,
"Complete work item failed . The state of the work item [id=" + this.Id + "] is " + this.State);
}
if (dynamicAssignmentHandler != null)
{
this._workflowSession.setDynamicAssignmentHandler(dynamicAssignmentHandler);
}
ITaskInstanceManager taskInstanceManager = this.RuntimeContext.TaskInstanceManager;
taskInstanceManager.completeWorkItem(this, null, comments);
}
public WorkItem(WorkItemEnum state, DateTime createdTime, DateTime?signedTm,
DateTime?endTime, String comments, TaskInstance taskInstance)
{
this.State = state;
this.CreatedTime = createdTime;
this.ClaimedTime = signedTm;
this.EndTime = endTime;
this.Comments = comments;
this.TaskInstance = taskInstance;
}
public WorkItem(WorkItemEnum state, DateTime createdTime, DateTime? signedTm,
DateTime? endTime, String comments, TaskInstance taskInstance)
{
this.State = state;
this.CreatedTime = createdTime;
this.ClaimedTime = signedTm;
this.EndTime = endTime;
this.Comments = comments;
this.TaskInstance = taskInstance;
}
public WorkItem(TaskInstance taskInstance)
{
this.TaskInstance = taskInstance;
}
// throws EngineException
public ITaskInstance createTaskInstance(IWorkflowSession currentSession, RuntimeContext runtimeContxt,
IProcessInstance processInstance, Task task, Activity activity)
{
TaskInstance taskInstance = new TaskInstance();
return taskInstance;
}
public WorkItem(TaskInstance taskInstance)
{
this.TaskInstance = taskInstance;
}
/// <summary>
/// 终止TaskInstance。将任务实例及其所有的“活的”WorkItem变成Canceled状态。
/// "活的"WorkItem 是指状态等于INITIALIZED、STARTED或者SUSPENDED的WorkItem.
/// </summary>
public bool AbortTaskInstance(TaskInstance taskInstance)
{
SqlTransaction transaction = SqlServerHelper.GetSqlTransaction(connectionString);
try
{
String sql = "update t_ff_rt_taskinstance set state=" + (int)TaskInstanceStateEnum.CANCELED + " ,end_time=@1 where id=@2 and (state=0 or state=1)";
int count = SqlServerHelper.ExecuteNonQuery(transaction, CommandType.Text, sql,
SqlServerHelper.NewSqlParameter("@1", SqlDbType.DateTime, 11, this.RuntimeContext.CalendarService.getSysDate()),
SqlServerHelper.NewSqlParameter("@2", SqlDbType.VarChar, 50, taskInstance.Id)
);
if (count <= 0)
{
transaction.Rollback();
return false;
}
// 将与之关联的WorkItem取消掉
String workItemSql = " update t_ff_rt_workitem set state=" + (int)WorkItemEnum.CANCELED + ",end_time=@1 "
+ " where taskinstance_id =@2 ";
count = SqlServerHelper.ExecuteNonQuery(transaction, CommandType.Text, workItemSql,
SqlServerHelper.NewSqlParameter("@1", SqlDbType.DateTime, 11, this.RuntimeContext.CalendarService.getSysDate()),
SqlServerHelper.NewSqlParameter("@2", SqlDbType.VarChar, 50, taskInstance.Id)
);
if (count <= 0)
{
transaction.Rollback();
return false;
}
taskInstance.State = TaskInstanceStateEnum.CANCELED;
transaction.Commit();
return true;
}
catch
{
transaction.Rollback();
return false;
}
finally
{
if (transaction.Connection.State != ConnectionState.Closed)
{
transaction.Connection.Close();
transaction.Dispose();
}
}
}