User-defined error messages/codes - Mailing list pgsql-sql

From Vince Gonzalez
Subject User-defined error messages/codes
Date
Msg-id 20000127181328.E24586@newton.baruch.cuny.edu
Whole thread Raw
Responses Re: [SQL] User-defined error messages/codes  (Vince Gonzalez <vince@baruch.cuny.edu>)
List pgsql-sql
Hello,

Is it possible to create user-defined error messages in functions?
For example, I'd like for an update to a table to fail with a message like
'You need to check your privileges' as opposed to 'Permission Denied'.    
I'd like to avoid parsing the messages actually returned by the server,   
as these could change from revision to revision.  Should I do this by     
crafting each function to return an error code that I define, and then    
use that code to index a table?  I'm interested to hear any solutions     
people may have come up with.                                             

I seem to remember there being some sort of exception facility, but I
can't remember where I may have seen it (or I could be crazy).       

My application is written in Java, if that matters.

--vince



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