NEWERA -- Pessimistic locking

Posted in 1997

Mike Ripley — Wed, 29 Oct 1997 14:24:31 +0000 — source: Informix-list mailing list archive (1991-1998)

In pessimistic locking changes are automatically applied to the database when a row loses focus (or is it concurrency). But in my application I want to prompt the user to accept the changes or not. No problem, put message in the beforeRowApplied event and return true or false. True allows the applyRowSQL to continue but False ends the function before completion. OK so far. However after rejecting the changes (beforeRowApplied returned False) I cannot revisit that record make the correct changes and accept. I get a -259 error. The only way out is to re-query. If I dont use the beforeRowApplied event, then record locking and staledata work fine but I dont want to automatically accept record changes I need to prompt the user. Thanks -- Mike Ripley

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