you have restricting qualifiers on the PK's? you just blew my mind.
On Mar 29, 2010, at 11:47 AM, David Avendasora wrote:
> Hi all,
>
> Sometimes you just need to share things that bite you. I have been having
> problems with objectWithPrimaryKeyValue.
>
> Here's what I was calling:
>
> EOUtilities.objectWithPrimaryKeyValue(ec, ENTITY_NAME, Long.valueOf(0))
>
> When it runs, I get:
>
> 10:48:59 MyApp[9003] DEBUG NSLog - evaluateExpression:
> <com.webobjects.jdbcadaptor.EROracleExpression: "SELECT t0.CODE,
> t0.DESCRIPTION FROM STATUSCODE t0 WHERE t0.CODE = ?" withBindings: 1:0(id)>
> 10:48:59 MyApp[9003] DEBUG NSLog - 1 row(s) processed
> 10:48:59 MyApp[9003] DEBUG NSLog - === Commit Internal Transaction
> 10:48:59 MyApp[9003] WARN NSLog -
> <com.webobjects.appserver._private.WOComponentRequestHandler>: Exception
> occurred while handling request:
> com.webobjects.eoaccess.EOUtilities$MoreThanOneException: Selected more than
> one item for primary key {id = 0; } in entity SamsStatusCode.
>
> The CODE in the DB is the PK, and I've executed the SQL and it returns
> exactly one row, just like you'd expect and the NSLog statement above says,
> yet I'm getting the more than one item for PK error.
>
> Steve Meyer came up with the answer: Just because you are getting on SQL row
> back, doesn't mean that it doesn't represent more than one EO.
>
> This Entity/Table is part of a Single Table Inheritance structure, and there
> are two oddities about the restricting qualifiers:
>
> 1) They are on the Primary Key column. For example: "id = 0 or id = 30 or id
> = 31"
> 2) They define _ranges_ as well as individual values. For example: "id > 1799
> and id < 1810"
>
> This seems to work just fine, except when we have one Entity that has no
> restricting qualifier, so when you call
> EOUtilities.objectWithPrimaryKeyValue(ec, ENTITY_NAME, Long.valueOf(0))
> you get two EOs back. Because two different Entities' restricting qualifier
> match "id = 0" .
>
> Happy Monday.
>
> Dave
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