/**
* Creates a new {@link TaskParentInterfaceImpl} object.</b> It initializes the {@link
* IDataAccessProvider}</b> Moreover all timers are reactivated (e.g. suspend until timer,
* expiration timer). See {@link TaskInstanceTimers} for more information.
*/
public TaskParentInterfaceImpl() {
// this.dataAccessProvider = IDataAccessProvider.Factory.newInstance();
this.evenHandler = EventHandler.newInstance();
/*
* Reactivate all task instance timers (e.g. suspend until timer,
* expiration timer) i.e. schedule the execution of certain actions
* until their timer has expired.
*/
TaskInstanceTimers.reactivateTimers();
}
/*
* (non-Javadoc)
*
* @see com.htm.TaskParentInterface#createTaskInstance(java.lang.String,
* java.lang.String, java.lang.Object, java.util.Set, java.lang.String,
* java.sql.Timestamp)
*/
public String createTaskInstance(
String taskParentId,
Set<ICorrelationProperty> correlationProperties,
String taskModelName,
String taskInstanceName,
Object inputData,
Set<IAttachment> attachments,
Timestamp expirationTime)
throws HumanTaskManagerException {
try {
// TODO contextId
String initiatorUserId = getCurrentUser();
if (StringUtils.isEmpty(initiatorUserId)) {
String errorMsg = "The username of the task initiator could not be determined.";
log.error(errorMsg);
throw new HumanTaskManagerException(errorMsg);
}
/* Start transaction for creating a task instance */
dataAccessProvider.beginTx();
this.authorizationManager.authorizeTaskParentAction(
initiatorUserId, null, EActions.CREATE_TASK_INSTANCE);
/* Create the task instance model */
TaskInstanceFactory taskFac = this.taskInstanceFactory;
ITaskInstance taskInstance =
taskFac.createTaskInstance(
taskModelName,
taskInstanceName,
inputData,
taskParentId,
correlationProperties,
expirationTime);
/* Store the task instance instance */
dataAccessProvider.persistHumanTaskInstance(taskInstance);
// Audit
// if (Configuration.isLoggingEnabled()) {
// IAuditLogger auditLogger = AuditFactory.newInstance();
// TaskInstanceView taskInstanceView = new
// TaskInstanceView(taskInstance);
// AuditAction action = new
// AuditAction(EActions.CREATE_TASK_INSTANCE.toString(),
// taskInstanceView, taskInstanceView.getStatus(), null,
// initiatorUserId);
// auditLogger.logAction(action);
// }
/* Activate the task instance expiration timer. */
TaskInstanceTimers.activateExpirationTimer(taskInstance);
/*
* Create Work Items and add attachments
*/
List<IWorkItem> workItems = new ArrayList<IWorkItem>();
WorkItemFactory workItemFac = this.workItemFactory;
/*
* A single work item for the task initiator has to be created
* because she is not defined in the task model by a people query.
* This should be done before the other work items are created since
* the people queries in the task model could refer on the task
* initiator.
*/
workItems.add(
workItemFac.createNewWorkItem(initiatorUserId, EHumanRoles.TASK_INITIATOR, taskInstance));
/*
* The attachments should also be added before the other work items
* are created then the people queries can refer on the attachments.
*/
taskInstance.setAttachments(
this.taskInstanceFactory.createAssignedUser(initiatorUserId), attachments);
/*
* Create work items for roles that are defined via people queries
* within the task model i.e. for roles business administrators,
* task stakeholder, potential owners
*/
workItems.addAll(workItemFac.createWorkItemsForTaskInstance(taskInstance));
// TODO: evaluate QueryProperties
taskFac.evaluateQueryProperties(taskInstance.getId(), taskModelName);
/*
* If the task instance has one or more potential owners it
* transitions to ready state i.e. it is activated
*/
boolean hasPotentialOwner = taskInstance.hasPotentialOwners();
log.debug("Create task instance - Task instance has potential owners : " + hasPotentialOwner);
/*
* The task instance can only set to the READY state if it has
* potential owners and if the task instance is not already expired.
*/
String oldState = taskInstance.getStatus().toString();
if (taskInstance.hasPotentialOwners() && !taskInstance.isExpired()) {
taskInstance.setStatus(ETaskInstanceState.READY);
taskInstance.setActivationTime(new Timestamp(Calendar.getInstance().getTimeInMillis()));
// TODO only one potential owner -> immediately go to reserved
// state
}
if (!hasPotentialOwner) {
log.info(
"Create task instance - "
+ "Can't transition to '"
+ ETaskInstanceState.READY
+ "' state because no potential owner(s) were found.");
}
if (taskInstance.isExpired()) {
log.info(
"Create task instance - "
+ "The task instance is "
+ ETaskInstanceState.OBSOLETE
+ " created because it has already expired at '"
+ Utilities.formatTimestamp(expirationTime)
+ "'.");
}
dataAccessProvider.persistWorkItems(workItems);
/* Inform event subscriber about the new work items */
publishNewWorkItemEvent(workItems);
// Audit
if (Configuration.isLoggingEnabled()) {
IAuditLogger auditLogger = AuditFactory.newInstance();
TaskInstanceView taskInstanceView = new TaskInstanceView(taskInstance);
AuditAction action =
new AuditAction(
EActions.CREATE_TASK_INSTANCE.toString(),
taskInstanceView,
taskInstanceView.getStatus(),
oldState,
initiatorUserId);
auditLogger.logAction(action);
}
dataAccessProvider.commitTx();
return taskInstance.getId();
} catch (HumanTaskManagerException e) {
dataAccessProvider.rollbackTx();
throw e;
} finally {
dataAccessProvider.close();
}
}