[OpenLayers-Dev] vector behavior ideas

Tim Schaub tschaub at openplans.org
Wed May 7 11:27:38 EDT 2008


I will try to be around for today's meeting time to talk vector behavior 
ideas.  Hope others with ideas can make it.




Eric Lemoine wrote:
> Hello
> Below are two ideas for our vector behavior work. For those who aren't
> aware of that effort, see
> http://trac.openlayers.org/wiki/Proposal/VectorBehavior.
> Strategy - a Strategy object defines behavior related to commit and
> update of features. In practise I think we'll have strategies that
> relate to commit and others that relate to update. For example, the
> current BBOX strategy relates to update. With that in mind, I think
> it'd make sense to compose strategies. In this way, we could create a
> strategy object that is composed of a commit strategy and add update
> strategy.
> Protocol - I think we need some abstraction to pass filters to
> protocols' read() method. We have the Filter class hierarchy for
> exactly this, don't we? The read() method could take as an argument
> either an object with protocol-specific params or a Filter object. If
> a filter object is passed the protocol would need to transtate that
> filter object into its own filtering mechanism. E.g. the WFS protocol
> would create  OGC Filter Encoding tags.
> Thoughts?
> --
> Eric
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