Ticket #1965 (closed bug: wontfix)
MapGuide layer caches dynamic overlay
|Reported by:||ksgeograf||Owned by:|
A dynamic overlay in MapGuide is, as the name states, dynamic. The image is requested with a HTTP "GET" call, and is thus subjected to the browser cache. Since the layer can be changed by server code, the layer should refresh, when the map is refreshed.
OpenLayers use the "viewRequestID" to do this for other purposes. The attached path applies the "viewRequestID" to each request, so the layer is refreshed, whenever required by the map. The sequence number is assigned to the same queryString key that the official viewer uses, "SEQ", to prevent name clashes.