Re: validate the uniqueness of data first before inserting
Re: validate the uniqueness of data first before inserting
- Subject: Re: validate the uniqueness of data first before inserting
- From: Dirk Bajohr <email@hidden>
- Date: Wed, 16 Jun 2004 12:01:06 +0200
There are two possible ways:
1) don't check for availability, catch and handle the exception if
insert fails
2) create a fetch specification and output an error page if the
customer_code is already in the database table
You can override validateForInsert(), see
http://developer.apple.com/documentation/WebObjects/Reference/API/com/
webobjects/eocontrol/EOValidation.html.
Cheers,
Dirk
Am 16.06.2004 um 11:32 schrieb Goh Keng Boon:
Hi,
I got this field called customer_code which is keyin by user manually
and it need to be unique. How can it check if it is unique first
before inserting the whole record into database?
Thanks alot.
KB
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Dirk Bajohr
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