public virtual void DeleteAttachmentsByTaskId(string taskId)
{
CheckHistoryEnabled();
IList <IAttachmentEntity> attachments = FindAttachmentsByTaskId(taskId);
bool dispatchEvents = EventDispatcher.Enabled;
string processInstanceId = null;
string processDefinitionId = null;
string executionId = null;
if (dispatchEvents && attachments != null && attachments.Count > 0)
{
// Forced to fetch the task to get hold of the process definition
// for event-dispatching, if available
ITask task = TaskEntityManager.FindById <ITask>(new KeyValuePair <string, object>("id", taskId));
if (task != null)
{
processDefinitionId = task.ProcessDefinitionId;
processInstanceId = task.ProcessInstanceId;
executionId = task.ExecutionId;
}
}
foreach (IAttachment attachment in attachments)
{
string contentId = attachment.ContentId;
if (!(contentId is null))
{
ByteArrayEntityManager.DeleteByteArrayById(contentId);
}
attachmentDataManager.Delete((IAttachmentEntity)attachment);
if (dispatchEvents)
{
EventDispatcher.DispatchEvent(ActivitiEventBuilder.CreateEntityEvent(ActivitiEventType.ENTITY_DELETED, attachment, executionId, processInstanceId, processDefinitionId));
}
}
}
protected internal virtual void DeleteProcessInstanceCascade(IExecutionEntity execution, string deleteReason, bool deleteHistory)
{
// fill default reason if none provided
if (deleteReason is null)
{
deleteReason = DeleteReasonFields.PROCESS_INSTANCE_DELETED;
}
foreach (IExecutionEntity subExecutionEntity in execution.Executions)
{
if (subExecutionEntity.IsMultiInstanceRoot)
{
foreach (IExecutionEntity miExecutionEntity in subExecutionEntity.Executions)
{
if (miExecutionEntity.SubProcessInstance != null)
{
DeleteProcessInstanceCascade(miExecutionEntity.SubProcessInstance, deleteReason, deleteHistory);
}
}
}
else if (subExecutionEntity.SubProcessInstance != null)
{
DeleteProcessInstanceCascade(subExecutionEntity.SubProcessInstance, deleteReason, deleteHistory);
}
}
TaskEntityManager.DeleteTasksByProcessInstanceId(execution.Id, deleteReason, deleteHistory);
if (EventDispatcher.Enabled)
{
EventDispatcher.DispatchEvent(ActivitiEventBuilder.CreateCancelledEvent(execution.ProcessInstanceId, execution.ProcessInstanceId, null, deleteReason));
}
// delete the execution BEFORE we delete the history, otherwise we will
// produce orphan HistoricVariableInstance instances
IExecutionEntity processInstanceExecutionEntity = execution.ProcessInstance;
if (processInstanceExecutionEntity == null)
{
return;
}
IList <IExecutionEntity> childExecutions = CollectChildren(execution.ProcessInstance);
for (int i = childExecutions.Count - 1; i >= 0; i--)
{
IExecutionEntity childExecutionEntity = childExecutions[i];
DeleteExecutionAndRelatedData(childExecutionEntity, deleteReason, false);
}
DeleteExecutionAndRelatedData(execution, deleteReason, false);
if (deleteHistory)
{
HistoricProcessInstanceEntityManager.Delete(new KeyValuePair <string, object>("id", execution.Id));
}
HistoryManager.RecordProcessInstanceEnd(processInstanceExecutionEntity.Id, deleteReason, null);
processInstanceExecutionEntity.Deleted = true;
}
