How can i call stored procedure using spring with jpa

Question

Am new to SPRING with JPA techniques.

am trying to call the stored procedure which is written in mysql 5. when i am trying to get the data using stored procedure cal

Answer 1

JPA 2.1 introduced support for stored procedures. You might want to give it a try instead of a native queries.

http://docs.oracle.com/javaee/7/api/javax/persistence/EntityManager.html#createStoredProcedureQuery%28java.lang.String%29

Answer 2

Use EntityManager.createNativeQuery() instead. I don't think it's possible to call a stored procedure through a JPA query.

public List doInJpa(EntityManager em) throws PersistenceException {
  javax.persistence.Query query=em.createNativeQuery("call st_proc_getusers()"); 
  return query.getResultList(); 
}

You could also use @NamedNativeQuery.

Answer 3

Calling a stored procedure means executing some SQL statement. You can't do that with with a JPQL query (what you get in your code when you do em.createQuery(...)). You must create a native query that allows you to send native SQL to the database, execute it and get the results:

 String query = "call st_proc_getusers(?)";
 NativeQuery nq = em.createNativeQuery(query);
 //the following line is necessary only if your stored procedure accepts a parameter:
 nq.setParameter(1, "paramValue");
 List<?> results = em.createNativeQuery(query).getResultList();