GetLegendGraphic does not interpret Rule parameter

[bartvde@…]

The GetLegendGraphic request currently does not interpret the Rule parameter.
Always the legend icon of the last class is given back, but the correct legend
icon should be given back instead.

[dmorissette]

I see in the code that the case where RULE is specified is there but it simply
calls msCreateLegendIcon() without specifying a class. Is this the result of an
incomplete implementation?  Assefa: can this easily be fixed? If not then please
move target to FUTURE.

[assefa]

It is incomplete. I was under the impression that It was fixed by Valik since I
raised this in Bug 653. I am going to correct it.

[assefa]

The Rule value is now used with to fetch the correspnding class by comparing the
rule value with the class name. If there is a match, an icon for the class is
retunrned. If there is no match an exception is returned.

[godwinl@…]

this may be for a separate bug, and may already have been considered, but in 
the GetStyles response, the spec has a "name" tage for rules.  Could the class 
names be added as rule names in the response too now that the getLegendGraphic 
accepts it?

[assefa]

It make sense to return the class names when doing a GetStyles. I have added a
new Bug for Liz's request Bug 1010.