Can we integrate Oracle RECORD TYPE with java Callable statement?

Question

Is it true that RECORD type is not compatible with JDBC? the driver am using is OJDBC6.jar

Java Code:

dbStrategy.openConnection();
        WrappedConnectionJDK6 wrapped = (WrappedConnectionJDK6) dbStrategy.getConnection();
        OracleConnection oracleConnection = (OracleConnection) wrapped.getUnderlyingConnection();
        CallableStatement callableStatement = oracleConnection.prepareCall("{call XXX_Info_Utl_Pkg.get_order_admin(?,?,?,?,?)}");
        callableStatement.setInt(1, Integer.parseInt(orderNumber));
        callableStatement.registerOutParameter(2, OracleTypes.ARRAY, "XXX_INFO_UTL_PKG.SEAGRS_ORDER_REC");
        callableStatement.registerOutParameter(3, OracleTypes.NUMBER);
        callableStatement.registerOutParameter(4, OracleTypes.VARCHAR);
        callableStatement.registerOutParameter(5, OracleTypes.NUMBER);

And Oracle Code:

PROCEDURE get_order_admin(
            p_order_num_in IN NUMBER,
            p_order_admin_out OUT XXX_info_utl_pkg.seagrs_order_rec,
            p_error_code_out OUT PLS_INTEGER,
            p_error_msg_out OUT VARCHAR2,
            p_ret_status_out OUT PLS_INTEGER);


TYPE seagrs_order_rec
IS
    record
    (
        order_admin        VARCHAR2(10),
        contact_name       VARCHAR2(50),
        contact_email_addr VARCHAR2(100),
        contact_phone_num  VARCHAR2(30));

The error am facing here is -

Exception : invalid name pattern: XXX_INFO_UTL_PKG.SEAGRS_ORDER_REC

Answer 1

While you cannot use JDBC directly to fetch your PL/SQL RECORD type, you can write an anonymous PL/SQL block and return the record into a local variable, which you can then decompose in its individual attributes as follows:

DECLARE
    rec XXX_info_utl_pkg.seagrs_order_rec;
BEGIN
    get_order_admin(?, rec, ?, ?, ?);
    ? := rec.order_admin;
    ? := rec.contact_name;
    ? := rec.contact_email_addr;
    ? := rec.contact_phone_num;
END;

You can now use the following JDBC code to call the procedure:

try (CallableStatement s = con.prepareCall(" ... previous PL/SQL block ...")) {
    s.setInt(1, Integer.parseInt(orderNumber));

    // Ordinary out parameters
    s.registerOutParameter(2, Types.NUMBER);
    s.registerOutParameter(3, Types.VARCHAR);
    s.registerOutParameter(4, Types.NUMBER);

    // Out parameters from your decomposed record
    s.registerOutParameter(5, Types.VARCHAR);
    s.registerOutParameter(6, Types.VARCHAR);
    s.registerOutParameter(7, Types.VARCHAR);
    s.registerOutParameter(8, Types.VARCHAR);

    s.execute();
    // Now, retrieve all the out parameters
}

I have recently blogged about this technique more in detail. The blog post also contains instructions about how you could automatically generate the anonymous PL/SQL blocks for all functions / procedures, that have record IN/OUT parameters.

Answer 2

Record Type is not compatible with JDBC drivers:

It is not feasible for Oracle JDBC drivers to support calling arguments or return values of the PL/SQL RECORD, BOOLEAN, or table with non-scalar element types. However, Oracle JDBC drivers support PL/SQL index-by table of scalar element types.

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