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https://jira.codehaus.org/browse/GEOS-4848?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gabriel Roldán reopened GEOS-4848:
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> Freeform "ENV" and "STYLES" parameter filters
> ---------------------------------------------
>
> Key: GEOS-4848
> URL: https://jira.codehaus.org/browse/GEOS-4848
> Project: GeoServer
> Issue Type: Improvement
> Components: GWC
> Reporter: Rohan Singh
> Assignee: Gabriel Roldán
> Priority: Minor
> Attachments: gwc-env.patch, gwc-env.patch, gwc-env.patch
>
>
> This patch adds an option to the GWC integration to allow freeform ENV and
> STYLES parameters. It's implemented as a {{RegexParameterFilter}} with a
> pattern of {{".*"}}.
> This is handy when the requested SLD ("styles") and values for SLD variable
> substitution ("env") are very variable, but still need to be cached.
> Currently I am using this for a layer in which specific features need to be
> highlighted. For example:
> bq. {{styles=highlight&env=featureToHighlight:myFeature}}
> This is similar to the second technique described at
> http://trac.osgeo.org/openlayers/wiki/Highlighting. While this generates a
> large number of tiles, I still need the generated tiles to be cached. I
> imagine others will have similar use cases.
> I know there is work underway to improve the GWC configuration UI, but this
> could solve some use cases right away.
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