How can I pass paramters to next page with session protection on?

Question

Hi, guys:
I encounter a problem of session protection problem. In a report page I set up a column of "map" link, so I can pass several parameters extracted from the same row to the new page where I can show map. I was using javascript popup2, and it worked well.
javascript:popUp2('f?p=&APP_ID.:3006:&SESSION.::&DEBUG.::P3006_H_OFFENDER_NAME,P3006_H_OFFENDER_ID,P3006_H_ADDRESS_LATITUDE,P3006_H_ADDRESS_LONGITUDE,P3006_H_PHYSICAL_LATITUDE,P3006_H_PHYSICAL_LONGITUDE,P3006_H_ADDRESS,P3006_H_PHYSICAL_ADDRESS:#Offender Name#,#Offender ID#,#Address Latitude#,#Address Longitude#,#Physical Latitude#,#Physical Longitude#,#Address#,#Physical Address#','650','450');However, I am required to set all of pages, items with session protection now. after that I got problem as:
Attempt to save item P3006_H_OFFENDER_NAME in session state during show processing, item has Internal Only protection.
Contact your application administrator.
So I changed it as redirect a page in application, and try to pass less parameters and query other parameters, but I got the similar problem:
Attempt to save item P3006_H_OFFENDER_ID in session state during show processing, item has Internal Only protection.
Contact your application administrator.
I notice most of solutions would be turning the session protection as unrestricted for these items, but I am not allowed to do this. Is there any way that I can pass parameters from a row in a report while session protection is on?
Thanks a lot!
Sam

Answer 1

I can quickly show you what I've done to solve for this:
First, create a PL/SQL Anonymous block, application level process of type "On Demand"  Here is an example of what I'm using - I named the process is SIMPLE_SSP (name is important later)
declare
l_url varchar2(1000);
s_url varchar2(2000);
begin
l_url := wwv_flow.g_x01; -- the apex name is g_x01 - note the key in the key value we pass later in javascript
s_url := apex_util.prepare_url(p_url => l_url,p_checksum_type => 'SESSION'); -- and here's where we get checksum
htp.p(s_url); -- and here's where we return it
end;
Next, I create a javascript function that can be called in the link
function redir_ssp(p1,p2,p3) {
var param1 = p1;
var param2 = p2;
var param3 = p3;
// notice when creating our Ajax object we reference the Application process by name
var ajaxReq = new htmldb_Get(null, &APP_ID., 'APPLICATION_PROCESS=SIMPLE_SSP', 0);
var sURL = 'f?p=&APP_ID.:4:&SESSION.::::P4_PARAM1,P4_PARAM2,P4_PARAM3:'+param1+','+param2+','+param3;
// notice the 'x01' literal mirrors the built in apex var we used above. x01, x02, x03 ... etc match their counterparts.
// you can use many parameters as long as you deal with them in the proc the same way
ajaxReq.addParam('x01',sURL);
var retURL = ajaxReq.get(); // and the htp.p is passed into the ajax get which is then returned in the retURL
//alert(retURL); // for debug
window.location.href = retURL; //this is the redirect.
Finally in the link
<a href="#" onclick="Javascript:redir_ssp(p1,p2,p3)">link text</a>
This can be easily altered to use in a pop up.