Spring数据jpa调用带有大量参数的存储过程

Question

Is it possible to map an object to all the parameters inside a NamedStoredProcedureQuery ? I need to call a stored procedure that has over 40 parameters that it takes in. The following code becomes really long and hard to read:

@NamedStoredProcedureQuery(
    name="SomeSPName",
    procedureName="SomeSPName",
    resultClasses={ MyEntity.class },
    parameters = {
        @StoredProcedureParameter(name="PACKAGE", type=String.class,  mode=ParameterMode.IN),
        @StoredProcedureParameter(name="APPNM",   type=String.class,  mode=ParameterMode.IN),
        // 40 more required parameters here...
)


public interface MyRepository extends JpaRepository<MyEntity, Long> {

    @Query
    @Procedure(name="SomeSPName")
    long getResult(@Param("PACKAGE") String package, @Param("APPNM") String appnm, /* The rest of the params here */);

}

So my question is can I replace the arguments inside getResult with an object that has all the getters and setters for the parameters and Hibernate will automatically assign the parameters correctly. For example:

public interface MyRepository extends JpaRepository<MyEntity, Long> {

    @Query
    @Procedure(name="SomeSPName")
    long getResult(MyObject params);

}

Here, MyObject will have fields corresponding to each of the StoredProcedureParameter defined up top. Hopefully, this makes sense. I just don't want to put all the 40+ parameters in the getResult definition. I'm using DB2 if it makes a difference. Any help would be appreciated!

Answer 1

EntityManager entityManager;

public Long getResult(Params params) {
    StoredProcedureQuery storedProcedure = entityManager
        .createStoredProcedureQuery("SomeSPName", Long.class)
        .registerStoredProcedureParameter("PACKAGE", String.class, ParameterMode.IN)
        .registerStoredProcedureParameter("APPNM", String.class, ParameterMode.IN)
        //...
        .setParameter("PACKAGE", params.getPackage())
        .setParameter("APPNM", params.getAppNm())
        //...
        ;

    return storedProcedure.getSingleResult();
}