How do I use OracleMaps Javascript API from a different host than MapViewer

Question

Hello,
I have successfully set up the Mapviewer quick start 10131, and am able to view the sample page showMap.html perfectly. I would like to run this same sample on a different server than where Mapviewer is installed. Let say mapviewer is installed on jstraub-winsvr:8888 and I want to run showMap.html from jstraub-linux1:7777. I tried changing the function showMap and the location to oraclemaps like the following:
<script language="Javascript" src="http://jstraub-winsvr:8888/mapviewer/fsmc/jslib/oraclemaps.js"></script>
function showMap()
var baseURL = "http://jstraub-winsvr:8888/mapviewer";
var mapCenterLon = -122.45;
var mapCenterLat = 37.6706;
var mapZoom = 4;
var mpoint = MVSdoGeometry.createPoint(mapCenterLon,mapCenterLat,8307);
var mapview = new MVMapView(document.getElementById("map"), baseURL);
mapview.addBaseMapLayer(new MVBaseMap("mvdemo.demo_map"));
mapview.setCenter(mpoint);
mapview.setZoomLevel(mapZoom);
mapview.display();                
Now when I try running this page on jstraub-linux1:7777 I get a Javascript error, and in Firebug, I can see that there are request like the following:
POST: http://jstraub-linux1:7777/mapviewer/ReturnLocaleOper
GET: http://jstraub-linux1:7777/mapviewer/mcserver?xml_request=%3C?xml+version=%221.0%22+standalone=%22yes%22?%3E%3Cmap_cache_admin_request%3E%3Cget_client_config+map_cache_names=%22mvdemo.demo_map%22+format=%22JSON%22/%3E%3C/map_cache_admin_request%3E
Obviously those requests are bogus since mapviewer is at jstraub-winsvr:8888 and not jstraub-linux1:7777, I just want to run the page from jstraub-linux1:7777. Anybody know how I do this?
Regards,
Jason

Answer 1

I believe that I am having the same problem. While I don't yet have a resolution, I do have a bit more information that may be useful. I have examined the oraclemaps.js script file and found some relevant references to the Javascript document.location object. As I watch the script execute, it seems that the author has made the assumption that the page served to the user has been served from the same Oracle Application Server running MapViewer. I have listed the lines that contain references to document.location below. (The line numbers may be off by a line or two as I have made some minor changes to facilitate my investigation.)
Line 742 : //_f16._f104="http://"\+document.location.host\+"/mapviewer/foi";
Line 6280 : var x2=String(document.location);
Line 10270 : var x40=String(document.location);
By changing line 742 to...
f16.f104="http://mymvserver:8888/mapviewer/foi";
...I believe I have the script looking in the right place. (Previously, it had been looking for /mapviewer/foi on the server that originally served the page.)
The x2 variable (at line 6280) seems to provide the current document location as a means to determine the MapViewer URL. Once again, the author seems to presume that MapViewer is found on the same server that originally served the page.
this._f53=x2.substring(0,x3\+x5\+2)+"/mapviewer";
I changed this line to read:
this._f53="http://mymvserver:8888/mapviewer";
Having made these changes, I have moved past the "object not found"-types of errors I had been getting. I now get "Permission Denied" errors which, I am thinking, may be the result of cross-site scripting problems predicted by the previous poster.
So, my question is this: Is it really expected that the page that integrates the map display must be served by the same Oracle Application Server instance on which MapViewer is running? This strikes me as an absurd limitation, so I assume it is not the case. Indeed, there is a post on this forum by another user who claims to have written an ASP.Net application that uses the Javascript interface to integrate MapViewer and the map display ( Link:securing mapviewer ). This is precisely what we are trying to do; but I have yet to determine how to go about doing it.
Can this be done? Is there any documentation that describes how to accomplish this?