Optimise legend filter by map/expression calculations #51675
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filter This can avoid unnecessary fetching and testing of many features for eg categorised/rule based renderers which don't display all features in the layer
these can be compiled and executed on the backend instead of requesting all features and testing client side
nirvn
approved these changes
Feb 1, 2023
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Use optimised approach which hands off the heavy lifting to the data providers, so that the filter can be handled on the backend in many cases.
Refs #51233