Persistence: change field with SpacePersist on update

Hi,

We are using XAP 9.7 and Mirror with hibernate for persistence. We noticed that

An object with SpacePersit set to true - when written to space is persisted in DB as expected
An object with SpacePersit set to false- when written to space is not persisted in DB as expected
The object from 2 is read back, the SpacePersist field is toggled to true and written back to space (updated using WriteModifiers.UPDATE_ONLY) - is not persisted

Can someone clarify the behaviour on #3? How can the object be persisted on an update?

Thanks

asked 2015-01-05 14:57:10 -0500

myth
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updated 2015-01-05 14:57:40 -0500

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2 Answers

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a transient space object cannot be modified to be a persistent object after it was written to the space. You will have to write a new (persistent) object with a different ID and remove the old transient version. Another option would be to delete the transient and write it again as persistent with the same ID - never tried it but might work.

answered 2015-01-05 15:04:10 -0500

shay hassidim

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Thanks.

That is a workaround we were considering - but the problem with that is all the listeners will get notified of object deletion and then addition - which is unnecessary and in some cases incorrect. All that is required is an update event!

myth ( 2015-01-05 15:08:32 -0500 )edit

For now you will have to add an additional boolean field into the space object that will indicate its an object that need to be ignored.You can add it to the template/query used by the polling container to filter it as part of the polling activity.-------- Original message --------From: forum@ask.gigaspaces.orgDate:01/05/2015 4:06 PM (GMT-05:00)