Call a plsql procedure with JPA in Spring

ProcedureQueries.java

package mypackage;

import javax.persistence.EntityManager;
import javax.persistence.ParameterMode;
import javax.persistence.PersistenceContext;
import javax.persistence.StoredProcedureQuery;

import org.springframework.stereotype.Component;

@Component
public class ProcedureQueries {

    @PersistenceContext
    private EntityManager entityManager;

    public String myfunc(final String param) {
        StoredProcedureQuery query = entityManager.createStoredProcedureQuery("plsql_procedure_name")
                .registerStoredProcedureParameter("pram", String.class, ParameterMode.IN)
                .registerStoredProcedureParameter("result", String.class, ParameterMode.OUT)
                .setParameter("pram", param);

        query.execute();

        return (String) query.getOutputParameterValue("result");

    }
}