Flexview Legend Performance Hit

[Anonymous]

In MapGuide 2011 Enterpriese, we discovered a significant performance improvement of layer rendering/generation in the Flexview when the legend component is detached (i.e. no legend in the MapGuide view).  I assume the performance hit occurs as the viewer is building the legend to support all of the themed objects.  Is there a way to mitigate the perfrormance impact and still have a legend in the MapGuide view? 

[Anonymous]

The problem is mainly 2 things:

• The legend widget dispatches a GETLEGENDIMAGE request for each style rule in each layer! A map with lots of layers or chunky themes will be hammering the web server with these requests, and that's just for one user! Multiply this by the number of expected concurrent users and the web server will be grinding.
• The legend widget does not truncate excessively large themes like the basic AJAX viewer.

If you know how to use git and how to build fusion, you can clone our git repo which has many performance improvements in the Legend widget and fixes many other usability problems. Works with MGE 2011.

https://github.com/jumpinjackie/fusion-multimap

These changes will eventually make it back into official fusion 

- Jackie