Data fetch without Refresh

Question

hi Friends,
I have a problem i want to extract data from table without refresh into text field when i'll enter any value in a text field then corressponding value should come in to corressponding textfield.
eg. when i enter emp_id 101 in a text field then the first_name and last_name ,adress should come in to corressponding text fields without refresh.
How Can I do this.
Thanks
Manoj

Answer 1

Hi,
Firstly, you would find it easier not to use x.something in the tag names in your process (I'm not sure if they are allowed, but I would avoid the dots anyway!). So:
DECLARE
vCLASSID VARCHAR2(100);
vSECTION VARCHAR2(100);
vFNAME VARCHAR2(100);
vLNAME VARCHAR2(100);
BEGIN
owa_util.mime_header('text/xml', FALSE );
htp.p('Cache-Control: no-cache');
htp.p('Pragma: no-cache');
owa_util.http_header_close;
SELECT C.CLASS_ID,C.SECTION,S.F_NAME INTO vCLASSID, vSECTION, vFNAME,vLNAME FROM CLASS_RECORD C INNER JOIN STUDENT_PERSONAL_DETAILS S ON
C.STUDENT_ID = S.STUDENT_ID WHERE C.STUDENT_ID = :STUDENTID
htp.prn('<DATA>');
htp.prn('<CLASS_ID VALUE="' || vCLASSID || '"></CLASS_ID>');
htp.prn('<SECTION VALUE="' || vSECTION || '"></SECTION>');
htp.prn('<F_NAME VALUE="' || vFNAME || '"></F_NAME>');
htp.prn('<L_NAME VALUE="' || vLNAME || '"></L_NAME>');
EXCEPTION WHEN OTHERS THEN
htp.prn('<DATA>');
htp.prn('<CLASS_ID VALUE="No such CLASS NAME!"></CLASS_ID>');
htp.prn('<SECTION VALUE="No such SECTION!"></SECTION>');
htp.prn('<F_NAME VALUE="No such First Name!"></F_NAME>');
htp.prn('<L_NAME VALUE="No such First Name!"></L_NAME>');
htp.prn('</DATA>');
END;I've also completed the EXCEPTION output as well so that both possibilities use DATA and /DATA
This does assume that you have an Application Item called STUDENTID and that your Application Process is called SCS and is an "On Demand" process
Now, the javascript... Firstly, you can't include dots in the var names as this identifies a property or attribute or function of an item (for example, document.location.href). Secondly, you should use the same upper/lower case text for the XML tag names as you used in the process - if you stick with uppercase throughout it is easy to remember. So, I've removed the dots and made the XML tag references uppercase:
<script type="text/javascript">
function getEmployeeInfo(filter)
  var xml = null;
  var get = new htmldb_Get(null, $v('pFlowId'), 'APPLICATION_PROCESS=SCS', 0);
  get.add('STUDENTID', filter.value);
  ret = get.get('XML');
  if(ret)
    var class_idItems = ret.getElementsByTagName("CLASS_ID");
    if (class_idItems)
      var class_id = document.getElementById("P314_CLASS_ID");
      class_id.value = class_idItems[0].getAttribute("VALUE");
    var sectionItems = ret.getElementsByTagName("SECTION");
    if (sectionItems)
      var section = document.getElementById("P314_SECTION");
      section.value = sectionItems[0].getAttribute("VALUE");
    var f_nameItems = ret.getElementsByTagName("F_NAME");
    if (f_nameItems)
      var f_name = document.getElementById("P314_STUDENT_NAME");
      f_name.value = f_nameItems[0].getAttribute("VALUE");
    var l_nameItems = ret.getElementsByTagName("L_NAME");
    if (l_nameItems)
      var l_name = document.getElementById("P314_STUDENT_NAME");
      l_name.value = l_nameItems[0].getAttribute("VALUE");
  get = null;
</script>If you try those, does it now work?
Andy