greetings,
you mean doing a refresh before doing find to update?
is there a way to prevent caching which i think the reason for this
problem....?
thank you
Adam Bien wrote:
>
> Hi Xedus,
>
> and you do it inside a TX? Try to clear the EM before reading,
>
> adam
> xedus schrieb:
>> Hello everyone,
>>
>> i'm runing a printing queue web service on glassfish v2, the clients ask
>> for
>> thier printing jobs and the server send it to them. After each successful
>> print the client invoke a web service method to flag that certain job as
>> being "done" so that the client will not have it sent to him again the
>> next
>> round when it askes for available printg jobs...
>>
>> it hapens many times that the new status "done" will not persist to the
>> data
>> base which leads to the pritnig job being sent over and over again.
>>
>> i tried container managed transactions and bean managed transaction with
>> the
>> same result. i even tried em.flush(), but no luck.....
>>
>> i'm using oracle toplink..
>>
>> here is how the code looks like .....
>>
>> .
>> .
>> .
>> private void persist(Object obj){
>> try{
>> //ut.begin();
>> //em.merge(obj);
>> em.persist(obj);
>> //ut.commet();
>> }catch(Exception ex){ ...}
>> }
>> @webmethod
>> public boolean markJobAsDone(long jobID){
>> try{
>> PrintingJob aJob = em.find(PrintingJob.class,jobID);
>> aJob.setStatus("done");
>> persist(aJob);
>> }catch(Exception ex){
>> return false;
>> }
>> return true;
>> }
>>
>>
>>
>> also the clients are asking for jobs every 30 seconds
>> another question, is there any other aproach to these queues and jobs?
>>
>> please help
>>
>>
>>
>> i just wanted to add that i can recreate the problem simply by changing
>> the
>> status of a job manualy form "SQL Developer" for example from "Done" to
>> "pending" and the job will keep beibg sent and will never be set to
>> "Done"
>> again....
>>
>>
>
>
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