CompoundInterestRateStoredProcJPATest.java 文件源码

@Test
public void shouldInvokeStoredProcedureWithOutbound() throws Exception {
    StoredProcedureQuery query =
        em.createStoredProcedureQuery("COMPOUND_INTEREST_SP")
        .registerStoredProcedureParameter(
            "P", Float.class, ParameterMode.IN)
        .registerStoredProcedureParameter(
            "r", Float.class, ParameterMode.IN)
        .registerStoredProcedureParameter(
            "n", Integer.class, ParameterMode.IN)
        .registerStoredProcedureParameter(
            "t", Integer.class, ParameterMode.IN)
        .registerStoredProcedureParameter(
            "A", Float.class, ParameterMode.OUT)
        .setParameter("P", new Float(1500))
        .setParameter("r", new Float(0.043))
        .setParameter("n", new Integer(4))
        .setParameter("t", new Integer(6));
    // P = 1500, r = 0.043 (4.3%), n = 4, and t = 6:
    boolean status = query.execute();
    System.out.printf("****************** status=%s\n", status);
    assertFalse( query.hasMoreResults());
    Double A = ( Double)query.getOutputParameterValue("A");
    System.out.printf("The output A was %12.7f\n", A );
    assertEquals( 1938.84, A, 0.005 );
}