Re: refcursor returned by pl/psql to jdbc

CREATE OR REPLACE FUNCTION user_data_select_all(BIGINT, REFCURSOR)
RETURNS REFCURSOR AS '
DECLARE
    -- parameters
    owner_id_p ALIAS FOR $1;
BEGIN
    OPEN $2 FOR SELECT *
        FROM user_data
        WHERE
            owner_id = owner_id_p;
    RETURN $2;
END;
' LANGUAGE 'plpgsql' WITH (isstrict);


            Statement stmt = conn.createStatement();
            try {
                String cursorName = "XXXX";
                stmt.setCursorName(cursorName);
                ResultSet res =
                  stmt.executeQuery("begin; SELECT user_data_select_all("
                                +userId.toString()+",'"
                                +cursorName +"');");

                while (res.next()) {
                        Long ownerId = new Long(res.getLong(1));
................


Bad Long XXXX
        at org.postgresql.jdbc2.ResultSet.toLong(ResultSet.java:1498)
        at org.postgresql.jdbc2.ResultSet.getLong(ResultSet.java:257)

I can name it and it still fails

Richard



Dave Cramer wrote:

> Richard,
>
> The problem is that the cursor is un-named. Is there a way to name the
> cursor? jdbc doesn't know what to do with a column named <unnamed cursor
> 1>
>
> Dave
> On Wed, 2002-04-10 at 19:03, Richard Emberson wrote:
> > Ok, I wanted to wrap a select statement with a PL/pgsql procedure
> > (information hiding, etc.)
> > So I have:
> >
> > CREATE OR REPLACE FUNCTION user_data_select_all(BIGINT)
> > RETURNS REFCURSOR AS '
> > DECLARE
> >     -- parameters
> >     owner_id_p ALIAS FOR $1;
> >
> >     -- local variables
> >     rc REFCURSOR;
> > BEGIN
> >     OPEN rc FOR SELECT *
> >         FROM user_data
> >         WHERE
> >             owner_id = owner_id_p;
> >     RETURN rc;
> > END;
> > ' LANGUAGE 'plpgsql' WITH (isstrict);
> >
> > Now from within psql I get the following:
> >
> > => select user_data_select_all(12);
> >  user_data_select_all
> > ----------------------
> >  <unnamed cursor 15>
> > (1 row)
> >
> > I kind of expected to see the actual rows?!?
> >
> > and from JDBC I get an exception:
> > Bad Long <unnamed cursor 1>
> >         at org.postgresql.jdbc2.ResultSet.toLong(ResultSet.java:1498)
> >         at org.postgresql.jdbc2.ResultSet.getLong(ResultSet.java:257)
> >
> > So the question is can I wrap a select function as return a resultset to
> >
> > JDBC?
> > Richard
> >
> >
> >
> >
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