Advanced Development Techniques for Oracle Portal Components

Hello friends,
I have the following problem. I have a report and a form (on a
view) in the same page, and when I select an item of the report
the form is refreshed with the values associated to the selected
item. The problem is that it makes it with delay, the first
selection doesn't show anything and the remaining sample the
data of the previous selection.
This application has been developed as Ken Atkins explains in
its document "Advanced Development Techniques for Oracle Portal
Components."
Oracle Portal Version: 3.0.9.8.0
Thanks in advance.
This is my code:
-- REPORT --
SELECT '<A HREF="http://mipc/portal30/
ALFONSO.refrescar_contenido?
p_variable=nombre_preferencia&p_variable_valor='||nombre_preferen
cia||'&p_pagina=61">'||Preferencias||'</A>' nombre_link
FROM ALFONSO.PREFERENCIAS
-- PROCEDURE TO REFRESH THE PAGE --
CREATE OR REPLACE PROCEDURE refrescar_contenido(p_varible IN
VARCHAR2,
          p_variable_valor IN varchar2,p_pagina IN
VARCHAR2) IS
v_Sesion portal30.wwsto_api_session;
BEGIN
v_Sesion := portal30.wwsto_api_session.load_session
('CONTEXT','SESS_EMP');
v_Sesion.set_attribute(p_varible, p_variable_valor);
v_Sesion.save_session;
owa_util.redirect_url('http://mipc/servlet/page?
pageid='||ppagina||chr(38)||'_dad=portal30'||chr(38)
||'_schema=PORTAL30'||chr(38)||'_mode=3');
END;
-- FORM --
-- ... BEFORE DISPLAYING THE PAGE
alfonso.consulta_preferencia(p_session);
-- PROCEDURE consulta_preferencia --
CREATE OR REPLACE PROCEDURE consulta_preferencia(p_session in
out PORTAL30.wwa_api_module_session) IS
v_RowID VARCHAR2(100);
v_Session portal30.wwsto_api_session;
v_nombre VARCHAR2(40);
BEGIN
v_Session := portal30.wwsto_api_session.load_session
('CONTEXT','SESS_EMP');
v_nombre := v_Session.get_attribute_as_varchar2
('nombre_preferencia');
IF v_nombre IS NOT NULL THEN
BEGIN
     SELECT rowidtochar(rowid) INTO v_RowID
     FROM ALFONSO.VISTAPREFERENCIAS
     WHERE nombre_preferencia = v_nombre;
-- VISTAPREFERENCIAS it is the view in which the form is
based.
END;
-- Tell the component that the query is coming from a link,
and that the rowid
-- is being used to query the correct context record.
p_session.set_value (p_block_name=>'DEFAULT',
p_attribute_name=>'_CALLED_FROM_LINK'
               ,p_value=>'ROWID');
-- Pass the rowid of the context record to query.
p_session.set_value (p_block_name=>'DEFAULT',
p_attribute_name=> '_ROWID'
               ,p_value=> v_RowID);
-- Now do the actual query, using the query button
processing in the target module
portal30.wwa_api_module_event.do_event
('DEFAULT','QUERY_TOP',1,'ON_CLICK',True,'',p_session);
-- Save the session information, which includes the
p_session.save_session;
END IF;
END;
/

You can make the report with a procedure from which you may call to a form by means of a link. It is a possibility, no??
It is better a example:
TABLE A
campo1 VARCHAR2 (20)
campo2 VARCHAR2 (20)
CREATE OR REPLACE PROCEDURE REPORT IS
v_cursor NUMBER;
sentencia VARCHAR2(200);
vnumfilas NUMBER;
rowid_pref VARCHAR2(18);
v_campo1 <schemaname>.A.campo1%TYPE;
v_campo2 <schemaname>.A.campo2%TYPE;
BEGIN
     htp.p('<HTML>');
     htp.p('<HEAD>');
     htp.p('</HEAD>');
     htp.p('<BODY>');
          sentencia := 'SELECT rowidtochar(rowid), campo1, campo2 FROM A';
          DBMS_SQL.PARSE(v_cursor,sentencia,DBMS_SQL.V7);
          DBMS_SQL.DEFINE_COLUMN(v_cursor,1,rowid_pref,18);
          DBMS_SQL.DEFINE_COLUMN(v_cursor,2,v_campo1,20);
          DBMS_SQL.DEFINE_COLUMN(v_cursor,3,v_campo2,20);
          vnumfilas := DBMS_SQL.EXECUTE(v_cursor);
          LOOP
          IF DBMS_SQL.FETCH_ROWS(v_cursor)=0 THEN
                    EXIT;
          END IF;
          DBMS_SQL.COLUMN_VALUE(v_cursor,1,rowid_pref);
          DBMS_SQL.COLUMN_VALUE(v_cursor,2,v_campo1);
          DBMS_SQL.COLUMN_VALUE(v_cursor,2,campo2);
          v_link := '<A href="PORTAL30.wwa_app_module.link?p_arg_names=_moduleid'||chr(38)||'p_arg_values=<form's moduleid>'||chr(38)||'p_arg_names=_rowid'||chr(38)||'p_arg_values='||rowid_pref||chr(34)||'>'||campo1||'</A> '||campo2||' <BR>';
               htp.p(v_link);
            END LOOP;
     htp.p('</BODY>');
     htp.p('</HTML>');
END;
the form has to be based on the table A.
I dont know if this example has errors, but have you the idea??
I hope it helps you out.
(Excuse my english)

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