January 8th, 2010
4:22 pm
Posted under JSF
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Tags Gotcha, Tip
A common gotcha this one which has had me scratching my head a few times. ID tags on elements must be unique, and if you duplicate one as I did on an ICEfaces table, you get a nice big stack trace saying “Unable to execute JSF lifecycle” amongst many other things. It is not obvious that this is the cause, and the IDE does not appear to pick it up even if you do a validate, so it is worth remembering and checking for, as it gives the impression that something much nastier has happened! (Some duplicates do not appear cause the problem but should be weeded out anyway).
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