CODEWITHSUNDEEP
xpages
David Marko
David Marko

Reputation: 2519

Update of xPages application removes sessions variables on Domino server ... what to do with this?

During the rather larges xPages application development a realized the fact that Domino deletes alls sessionScope, viewScope, applicationScope variables in application after any change in application design(that causes some internal application reload on server). I understand this for development process, but its realy unacceptable in production because it makes inconsistences for connected users. Even simple typo correction in code or on xpage(on any xpage, not the one the user is working on) and applying changes to production application causes this deletes. Is there a way how to overcome this behaviour? (I know I can update application outside of business hours or something but its problem for new application when you need to deliver changes quickly e.g. typo fixes ...)

Upvotes: 4

Views: 447

Answers (3)

Frantisek Kossuth
Frantisek Kossuth

Reputation: 3524

jjtbsomhorst explained the reason. I want to add: don't rely on scoped variables and use beans. Beans contain "formula for cooking a fresh one" what is much safer for application. Any scoped variable computed on specific event (on load typically) will be lost forever, if you make update to application as mentioned in your question. But if you used bean - its values will be recreated whenever needed again.

Upvotes: 0

Tim Tripcony
Tim Tripcony

Reputation: 8086

This answer to a previous question might provide an option for you. In the context of the original question, the suggestion for defining listeners was just to provide an opportunity to do some cleanup prior to the scopes being destroyed. These types of listeners, however, could also be used to save and restore the state of these scopes. I'd urge caution for the reasons JJTB mentions, but certainly in situations where you're making completely unrelated changes (e.g. structural, not logical), this would give you a way to prevent users from being impacted by frequent scope clearing.

Upvotes: 2

jjtbsomhorst
jjtbsomhorst

Reputation: 1667

This has to be done because any changes in your application could cause the scoped variables ( and its contents) to invalidate. Updating an application ( any not only xpage apps ) should be done in a specified trimeframe at which there are none / limited amount of users.

Upvotes: 6

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