使用Eclipse链接从存储过程中获取输出参数

Question

我从JPA EclipseLink调用存储过程。存储过程返回三个输出变量，一个游标类型和另外两个类型。我能够从游标返回的值，而不是其他两个值。

这是存储过程的一部分（示例）：

create or replace PROCEDURE PROCEDURE1 (
Variable1               IN VARCHAR2,
Variable12          IN VARCHAR2,
Variable13                      IN VARCHAR2,
Variable14                  IN VARCHAR2,
p_xml_result                OUT SYS_REFCURSOR,
p_errorcode             OUT NUMBER,
p_errorMessage      OUT VARCHAR2)
    IS
        -- Declare variable
        ERRSQL                         VARCHAR2 (80);
        NOSTRAECCEZIONE    EXCEPTION;
        ERROR_ONE                 EXCEPTION;
        V_AREA                        VARCHAR2(40);

    BEGIN
SELECT AREA
              INTO V_AREA
              FROM Employee
             WHERE     Employee_CODE = P_EmployeeCode;

              OPEN p_xml_result FOR
              <Some query to get data>
              p_errorcode := 0;
                p_errorMessage := NULL;

EXCEPTION
        WHEN NO_DATA_FOUND THEN
                p_errorcode := 100;
            p_errorMessage := 'generic error';

        WHEN OTHERS THEN
            p_errorcode := 102;
            p_errorMessage := SQLERRM;

Java代码：

StoredProcedureCall procCall = new StoredProcedureCall();
procCall.setProcedureName("getSpecialOffers");
procCall.addNamedArgument("Variable1","Variable1",String.class);
procCall.addNamedArgument("Variable2", "Variable12", String.class);
procCall.addNamedArgument("Variable13", "Variable13", String.class);

procCall.addNamedArgument("Variable14", "Variable14", String.class);
procCall.addNamedOutputArgument("p_xml_result", "p_xml_result", OracleTypes.CURSOR);
procCall.addNamedOutputArgument("p_errorcode", "p_errorcode", Integer.class);
procCall.addNamedOutputArgument("p_errorMessage", "p_errorMessage", String.class);

Session session = ((JpaEntityManager)_em).getActiveSession();
ValueReadQuery query = new ValueReadQuery();
query.setCall(procCall);
query.addArgument("Variable1");
query.addArgument("Variable12");
query.addArgument("Variable13");
query.addArgument("Variable14");

Vector parameters = new Vector();
parameters.addElement(Variable1);
parameters.addElement(Variable12);
parameters.addElement(Variable13);
parameters.addElement(Variable14);


Object qResult = null;

qResult = session.executeQuery(query,parameters);
Vector vec=(Vector) qResult;
ArrayRecord arrayrec =(ArrayRecord) vec.get(0);

p_xml_result返回四个字段，我可以将其作为arrayrec.get（“VariableXYZ”）获取。并且arrayrec也只有从光标返回的那四个变量。但是我希望在所有条件下都能在我的代码中访问p_errorcode的值。你能帮帮我吗？

Answer 1

通过将ValueReadQuery更改为DataReadQuery，我获得了所需的输出参数。