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Null Pointer Exception when invoking .asOrderedSet in EOL query [message #581643]

Thu, 08 October 2009 12:07

Sajit

Messages: 6
Registered: October 2009

Junior Member

Hello Dimitris,

The query in EOL File is:

operation InitialisationDataSet getTimeslotsNot TransmittableTo(other:InitialisationDataSet) : OrderedSet(TimeslotBlock) {
var myTxBs: OrderedSet(TimeslotBlock) := self.getTimeslotBlocks().select(b|b.isExplicitTransmit());
var allTransmittableBs: OrderedSet(TimeslotBlock) := self.getAllTimeslotsTransmittableTo(other);
myTxBs.println();
allTransmittableBs.println();
return myTxBs.reject(b|allTransmittableBs.includes(b));
}

The statement to execute query using EOL is:

timeslots := ids1.getTimeslotsNotTransmittableTo(ids2).asOrderedSet();
timeslots.println();

The above statement gives the required output. But when executed in Java it throws null pointer exception.

The code in Java is:

EolOperation getAllTimeslotsNotTransmittableTo = module.getOperations().getOperation("getAllTimeslotsNotTransmittableTo ");
List idsList = new ArrayList();
idsList.add(ids2);
EolOrderedSet timeSlots = (EolOrderedSet) getAllTimeslotNotTransmittableTo.execute(ids1, idsList, module.getContext());

The above line gives null pointer exception.

Thanks,

Sajit

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Re: Null Pointer Exception when invoking .asOrderedSet in EOL query [message #581663 is a reply to message #581643]

Thu, 08 October 2009 13:16

Dimitrios Kolovos

Messages: 1776
Registered: July 2009

Senior Member

Hi Sajit,

Could you please check if getAllTimeslotNotTransmittableTo is null? If
so this may be due to the extra space in

getOperation("getAllTimeslotsNotTransmittableTo "); <-

Cheers,
Dimitris

Sajit wrote:
> Hello Dimitris,
>
> The query in EOL File is:
>
> operation InitialisationDataSet getTimeslotsNot
> TransmittableTo(other:InitialisationDataSet) : OrderedSet(TimeslotBlock) {
> var myTxBs: OrderedSet(TimeslotBlock) :=
> self.getTimeslotBlocks().select(b|b.isExplicitTransmit());
> var allTransmittableBs: OrderedSet(TimeslotBlock) :=
> self.getAllTimeslotsTransmittableTo(other);
> myTxBs.println();
> allTransmittableBs.println();
> return myTxBs.reject(b|allTransmittableBs.includes(b));
> }
>
>
> The statement to execute query using EOL is:
>
> timeslots := ids1.getTimeslotsNotTransmittableTo(ids2).asOrderedSet();
> timeslots.println();
>
> The above statement gives the required output. But when executed in Java
> it throws null pointer exception.
>
> The code in Java is:
>
> EolOperation getAllTimeslotsNotTransmittableTo =
> module.getOperations().getOperation("getAllTimeslotsNotTransmittableTo ");
> List idsList = new ArrayList();
> idsList.add(ids2);
> EolOrderedSet timeSlots = (EolOrderedSet)
> getAllTimeslotNotTransmittableTo.execute(ids1, idsList,
> module.getContext());
>
> The above line gives null pointer exception.
>
> Thanks,
>
> Sajit

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