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Date: Mon, 9 Jul 2012 08:46:26 -0700 (PDT)
From: Dok Sander <doksander@yahoo.com>
Reply-To: Dok Sander <doksander@yahoo.com>
Subject: SQL -like triggers in JCR
To: "users@jackrabbit.apache.org" <users@jackrabbit.apache.org>
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Hello,=0A=0A=A0I'm working on a project that uses JCR and needs to perform =
some actions on node add to evaluate the node's validity(This would be some=
thing like: Check if this node's property date is within the required date =
range). Using SQL I would do this by using triggers or foreign key constrai=
nts but I have to yet to find a corresponding feature in JCR. I was first r=
ooting for jcr.observation(And more precisely Jackrabbit SynchronousEventLi=
stener) but it seems that the listener is not supposed to write to the repo=
(At least not on the same session) and it wouldn't help anyway since I need=
 a way to _cancel_ the node add operation.=0A=0AI could of course override =
NodeImpl, do the required validation on=A0 addNode and then call super.addN=
ode, or perhaps do some checking on AccessManager. Still, it feels like thi=
s functionality something that's missing in JCR. Am I working against the s=
pecification here or have I just not found the corresponding features :) ?=
=0A=0A-- vdox
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