[OpenLayers-Users] loading heavy WFS. solutions?

[G. Allegri]

Thanks everyone.
I've convinced the customer about the problem... We'll follow the
mixed WMS/WFS model.

2008/9/18 Simone Gadenz <simone.gadenz at jrc.it>:
> My two cents:
>
> - if the WFS serves a large number of small polygon I believe you should set
> an upper zoom limit to avoid the map to be really crowded and not readable,
> hence not usable from your demanding users;
> - we had a similar problem with a point layer of global critical
> infrastructures and we approached the problem in a sligthly different way:
>        1- we serve the layer as wms until a certain scale, the user can
> click on the feature,   the server send back all the information of that
> point and a popup shows those info. No  hoovering at this scale
>        2- at a larger scale we publish the layer as wfs limiting the number
> of features             returned; obviously it is important to estimate the
> limit on the number of features         returned according to the spatial
> density of the features in the layer
> - in your case I probably would follow a similar strategy but I would send
> back to the user the polygon corresponding to the clicked point as vector
> feature (GML, GeoJSON, etc...)
>
> Cheers
>
> Simone
>
>
>
>
> -----Original Message-----
> From: users-bounces at openlayers.org [mailto:users-bounces at openlayers.org] On
> Behalf Of G. Allegri
> Sent: 18 September 2008 00:13
> To: percy
> Cc: Robert Sanson; users at openlayers.org
> Subject: Re: [OpenLayers-Users] loading heavy WFS. solutions?
>
>> how would the click handler deal with hover events for a WMS of polygon
>> features?
>
> In fact there's no way of dealing with it.
> And above all the problem of highlighting remains.
> I definetly need WFS...
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