[WO45] Problem with a new EOQualifier subclass in Java
[WO45] Problem with a new EOQualifier subclass in Java
- Subject: [WO45] Problem with a new EOQualifier subclass in Java
- From: "Labrie, Francis (Liste de distribution)" <email@hidden>
- Date: Mon, 10 Mar 2003 18:34:23 -0500
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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