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Calling preparedStatement/Function the JPA way [message #755450]

Tue, 08 November 2011 09:53

Eclipse User

Well, the JPA documentation suggests this:
http://en.wikibooks.org/wiki/Java_Persistence/Advanced_Topics#Stored_Procedures

EntityManager em = getEntityManager();
Query query = em.createNativeQuery("BEGIN VALIDATE_EMP(P_EMP_ID=>?); END;");
query.setParameter(1, empId);
query.executeUpdate();

But this doesn't work for me.

Quote:
> Caused by: java.lang.IllegalStateException: You cannot call executeUpdate() on this query. It is the incorrect query type.

I guess EclipseLink has its own PreparedStatement/Function methods. But how do you invoke that using injected container-managed EntityManager? I know how to do stuff using EclipseLink Session construct, but inside this EJB context I just cannot get Session... clues, help? I am just stuck on this at every corner. Well, I can still get the connection direcly, but would like to avoid that if possible since I have managed to fetch data using JPA.

Is it worth trying at all?

Re: Calling preparedStatement/Function the JPA way [message #755523 is a reply to message #755450]

Tue, 08 November 2011 12:09

Eclipse User

Hello,

I'm not sure why you would be getting the exception from this code, can you post the full exception stack trace and the EclipseLink version you are using?

You can try EclipseLink support for named stored procedures:
http://wiki.eclipse.org/Using_EclipseLink_JPA_Extensions_(ELUG)#Using_EclipseLink_JPA_Extensions_for_Stored_Procedure_Query

To use EclipseLink native queries and calls, you do not need direct access to the session. Instead, you can use the JpaEntityManager's native createQuery methods that take a call or EclipseLink query object:
http://wiki.eclipse.org/EclipseLink/Examples/JPA/EMAPI#EntityManager_createQuery.28Expression.29

Best Regards,
Chris

Re: Calling preparedStatement/Function the JPA way [message #755524 is a reply to message #755450]

Tue, 08 November 2011 12:09

Eclipse User

Re: Calling preparedStatement/Function the JPA way [message #757571 is a reply to message #755523]

Sat, 19 November 2011 10:45

Eclipse User

Hi,
I have user BIRT3.7 version. I want create data set with stored procedure with cursor.data not retrieve but error is:
A BIRT exception occurred.
Plug-in Provider:Eclipse BIRT Project
Plug-in Name:BIRT Data Engine
Plug-in ID:org.eclipse.birt.data
Version:3.7.1.v20110905
Error Code:odaconsumer.CannotExecuteStatement
Error Message:Cannot execute the statement.
org.eclipse.birt.report.data.oda.jdbc.JDBCException: SQL statement does not return a ResultSet object.
SQL error #1:Protocol violation
;
java.sql.SQLException: Protocol violation

please help me

Thanks
Om

[Updated on: Sat, 19 November 2011 11:03] by Moderator

Re: Calling preparedStatement/Function the JPA way [message #758005 is a reply to message #755523]

Sat, 19 November 2011 10:45

Eclipse User

Hi,
I have user BIRT3.7 version. I want create data set with stored procedure with cursor. but error is:
A BIRT exception occurred.
Plug-in Provider:Eclipse BIRT Project
Plug-in Name:BIRT Data Engine
Plug-in ID:org.eclipse.birt.data
Version:3.7.1.v20110905
Error Code:odaconsumer.CannotExecuteStatement
Error Message:Cannot execute the statement.
org.eclipse.birt.report.data.oda.jdbc.JDBCException: SQL statement does not return a ResultSet object.
SQL error #1:Protocol violation
;
java.sql.SQLException: Protocol violation

please help me

Thanks
Om

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