Home » Eclipse Projects » EclipseLink » Templates for CREATE, INSERT, UPDATE, DELETE queries(Using customized queries for accessing database tables and views)
| Templates for CREATE, INSERT, UPDATE, DELETE queries [message #921400] |
Mon, 24 September 2012 04:47  |
 Askar Missing name
Messages: 3
Registered: September 2012 |
Junior Member |
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Hello everybody. After almost a year of development of project that uses JPA/Eclipselink we have to route all our queries to db tables and views via oracle packages. So the question is: is it possible in eclipselink to access to tables using customized query templates?
Instead of "SELECT NAME, SURNAME FROM SCHEME1.USER WHERE ID = ?" generate "SCHEME1.PACKAGENAME1.FUNCTION1(?)" for select and same for other queries - create/update/delete?
I didn't found something alike in raw JPA, maybe it is possible using eclipselink API?
EclipseLink, version: Eclipse Persistence Services - 2.3.1.v20111018-r10243
[Updated on: Mon, 24 September 2012 05:18] Report message to a moderator |
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| Re: Templates for CREATE, INSERT, UPDATE, DELETE queries [message #937881 is a reply to message #924965] |
Tue, 09 October 2012 10:47  |
Neikius Mising name
Messages: 43
Registered: April 2011 |
Member |
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So, fun fact, this still does not work.
ReadAllQuery raq = new ReadAllQuery(SomeClass.class);
StoredProcedureCall call_raq = new StoredProcedureCall();
call_raq.setProcedureName("SomeClass.allrows"); //name of named stored procedure
call_raq.useNamedCursorOutputAsResultSet("cursor");
raq.setCall(call_raq);
Now I can clearly see the default ReadAllQuery is used. Was the same 1 year ago, is the same still.
Might be descriptor cannot get those annotated named procedures? There is never any error, just calling of default sql query on a table.
Can someone point me to a working example of this?
edit: well I guess this is just impossible to do as I imagined. If I write/generate direct procedure calls then maybe, but you can't use named procedures/functions in descriptorCustomizer.
Also another problem is cache refreshing anyway since some inserts might do a little of their own tinkering so everything is redundant anyway. Turn off cache, use wrapped objects to query data and its done.
Still interested in what OP did though.
[Updated on: Tue, 09 October 2012 14:23] Report message to a moderator |
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| Re: Templates for CREATE, INSERT, UPDATE, DELETE queries [message #939206 is a reply to message #937881] |
Wed, 10 October 2012 14:24 |
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Where are you using this code, what error do you get? To override the default readAll operation you need to set this query in the DescriptorQueryManager. Include your complete DescriptorCustomizer code.
In general, it is normally the insert, update, delete, readObject queries that are override, as these are specific queries. The readAll query would only override a dynamic query for all instances (no where clause, not hints). JPA has some different defaults, so you may need to set the distinctState of the query. For a readAll query it would be easier to just execute a named query that calls the stored procedure.
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