public long ExecuteTask(DbSession dbSession, IOrganisationSessionLocal organisationComponent)
{
long millisToWait = DEFAULT_INTERVAL;
DateTime now = DateTime.Now;
IEnumerator iter = dbSession.Iterate(queryFindJobsToBeExecuted, now, DbType.TIMESTAMP).GetEnumerator();
if (iter.MoveNext())
{
JobImpl job = (JobImpl) iter.Current;
try
{
log.Debug("executing activation '" + job.Id + "' scheduled for " + job.Date.ToString());
log.Debug("activation's flow-context is :" + job.Context);
String userId = job.UserId;
DelegationImpl actionDelegation = job.ActionDelegation;
ExecutionContextImpl executionContext = new ExecutionContextImpl(userId, dbSession, organisationComponent);
IFlow context = job.Context;
if (context != null)
{
executionContext.SetFlow(context);
executionContext.SetProcessInstance(context.ProcessInstance);
executionContext.SetProcessDefinition(context.ProcessInstance.ProcessDefinition);
}
else
{
executionContext.SetProcessDefinition(job.ProcessDefinition);
}
delegationHelper.DelegateScheduledAction(actionDelegation, executionContext);
}
catch (Exception t)
{
log.Error("scheduler-exception : couldn't perform task : " + t.Message, t);
}
dbSession.Delete(job);
dbSession.Flush();
if (iter.MoveNext())
{
return 0;
}
}
iter = dbSession.Iterate(queryFindJobsInTheFuture, now, DbType.TIMESTAMP).GetEnumerator();
if (iter.MoveNext())
{
JobImpl activation = (JobImpl) iter.Current;
long activationDate = activation.Date.Ticks;
millisToWait = activationDate - now.Ticks;
log.Debug("next activation is scheduled at " + activation.Date.ToString() + ", (in " + millisToWait + " millis)");
if (millisToWait < 0)
millisToWait = 0;
if (millisToWait > DEFAULT_INTERVAL)
millisToWait = DEFAULT_INTERVAL;
}
return millisToWait;
}