Re: Single-table inheritance and deep fetch
Re: Single-table inheritance and deep fetch
- Subject: Re: Single-table inheritance and deep fetch
- From: Ken Anderson <email@hidden>
- Date: Mon, 26 Sep 2005 09:09:43 -0400
Dan,
It should definitely work. Have you looked at the SQL to see what
the fetch looks like? Are either entity marked as abstract?
Ken
On Sep 26, 2005, at 8:59 AM, Daniel Eggert wrote:
Hi,
I can't get a deep fetch to work with single-table inheritance.
I have a class A / entity A and class B / entity B. For my single-
table inheritance I have a 'type' attribute that is set to either
'A' or 'B'.
Class B inherits from class A, i.e. A is the parent of B.
If I do a deep fetch on A, I'd expect the objects of class B also
to be returned. But that does not happen.
String entityName = "A";
EOFetchSpecification aFetchSpecification;
aFetchSpecification = new EOFetchSpecification(entityName,
(EOQualifier) null, null, true, true, null);
EODatabaseDataSource dataSource = new EODatabaseDataSource
(editingContext(), entityName);
dataSource.setFetchSpecification
(authorsAndReadersFetchSpecification);
The data source only contains objects with type = "A". How do I get
both "A" and "B" in one dataSource?
/Daniel
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