Hi!
I tried putting the fix between
Procedure proc =
context.getEntityResolver().getProcedure("cayenne_tst_select_proc");
and
ProcedureQuery query = new ProcedureQuery(proc);
This way I don't need any special context setup.
It appears to work. I just copied over the content
of OracleStackAdapter.tweakProcedure().
Is there anything special I should look out for?
Regards,
David
> -----Original Message-----
> From: Andrus Adamchik [mailto:[email protected]]
> Sent: Tuesday, January 18, 2011 9:33 PM
> To: [email protected]
> Subject: Re: Stored procedures - more examples?
> Importance: Low
>
>
> On Jan 18, 2011, at 8:28 PM, David Balažic wrote:
>
> > So, does that testcase really work on Oracle?
>
> Yes. Now revisiting the tests, we are cheating to make the
> generic mapping work with Oracle. The reason for this is
> Oracle driver's insistence on circumventing basic JDBC
> abstractions. We take a generic mapping [1] and alter the
> procedure object in the test code [2]. Notice how we install
> Oracle-specific type as an OUT parameter type:
>
> // the type used below is "oracle.jdbc.OracleTypes.CURSOR"
> proc.addCallParameter(new ProcedureParameter("result",
> OracleAdapter.getOracleCursorType(),
> ProcedureParameter.OUT_PARAMETER));
>
> For now the above (creating or tweaking procedure mapping
> metadata in the code) is one possible way for dealing with
> Oracle. Going forward, we may either support numeric values
> for column types (so that a user could map this column as
> "-10", same as "oracle.jdbc.driver.OracleTypes.CURSOR"). Or
> maybe we should dynamically rewrite Cayenne-mapped stored
> procedures, adding CURSOR parameter inside Cayenne (not yet
> sure how what part of the mapping should trigger such behavior).\
>
> And unfortunately there's little hope that after all these
> years Oracle will finally fix their driver (or at least
> implement ParameterMetaData JDBC interface so that
> Oracle-specific types could be used dynamically).
>
> Andrus
>
>
> [1]
>
> <procedure name="cayenne_tst_select_proc">
> <procedure-parameter name="aName" type="VARCHAR"
> length="254" direction="in"/>
> <procedure-parameter name="paintingPrice" type="INTEGER"
> direction="in"/>
> </procedure>
>
>
> [2] OracleStackAdapter.java:
>
> public void tweakProcedure(Procedure proc) {
> if
> (DataContextProcedureQueryTest.SELECT_STORED_PROCEDURE.equals(
> proc.getName())
> && proc.getCallParameters().size() == 2) {
> List params = new ArrayList(proc.getCallParameters());
>
> proc.clearCallParameters();
> proc.addCallParameter(new
> ProcedureParameter("result", OracleAdapter
> .getOracleCursorType(),
> ProcedureParameter.OUT_PARAMETER));
> Iterator it = params.iterator();
> while (it.hasNext()) {
> ProcedureParameter param =
> (ProcedureParameter) it.next();
> proc.addCallParameter(param);
> }
>
> proc.setReturningValue(true);
> }
> }
>
