Re: [WO45] Problem with a new EOQualifier subclass in Java
Re: [WO45] Problem with a new EOQualifier subclass in Java
- Subject: Re: [WO45] Problem with a new EOQualifier subclass in Java
- From: Chuck Hill <email@hidden>
- Date: Mon, 10 Mar 2003 16:19:27 -0800
- Organization: Global Village Consulting, Inc.
I don't use WODisplayGroups but... The docs state, "It collects objects from an
EODataSource, filters and sorts them, and maintains a selection in the filtered
subset."
That is not very clear, but it strongly suggests that WODisplayGroup does in
memory filtering rather than refetching from the DB.
Chuck
Labrie, Francis (Liste de distribution) wrote:
Hi,
I've developed a new EOQualifier subclass in Java called
SoundExQualifier that permits SoundEx comparison on a DBMS that support
it like Microsoft SQL Server (i.e. "DIFFERENCE(keyPath, value) >=
similarityLevel").
When I use this qualifier with a simple EOFetchSpecification, it works
like a charm.
But I can't use it with a WODisplayGroup. When the WODisplayGroup method
qualifyDataSource() is called, an exception is thrown:
NSInvalidArgumentException: ***
-qualifierMigratedFromEntity:relationshipPath: cannot be sent to an
abstract object of class
com/genilog/webobjects/eocontrol/SoundExQualifier: Create a concrete
instance!
Why do I get a such exception? I don't implements EOQualifierEvaluation
because I don't want to support in memory fetch, so there is no
evaluateWithObject(Object) method. I've tried to define a
qualifierMigratedFromEntity(EOEntity, String) method too that returns a
SoundExQualifier clone, but it doesn't work. Can anyone help me?
Kind regards,
____________________________________________
Francis Labrie email@hidden
Montrial, Quibec
Canada
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--
Chuck Hill email@hidden
Global Village Consulting Inc. http://www.global-village.net
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