[udig-devel] Problem with adding features to an exsiting resource

[Jesse Eichar]

Hi Tony,

This is problem with many of the resources.  I've updated the code  
and am releasing and SDK with fixes for the Bounding box issue... So  
I think it isn't well tested at this point let me know how it goes.

Jesse

On Apr 16, 2007, at 7:27 AM, tony.roth at GMX.de wrote:

> Hi list,
> I create a resource (with "createTemporaryResource(featureType)")  
> and add some features to it. Then the layer is created and  
> everything is fine. Later I want to reuse this resource (and the  
> layer) and remove all features of this resource. Then I add new  
> Features to the (empty) resource but the resource's envelope isn't  
> updated. This means that the new features are added (I see this  
> when debuging) but the envelope of the resource still has the value  
> of the moment the resource was bound to a layer to a map and their  
> envelope. This means that the resource contains the new features  
> but they aren't showed on the map.
>
> The resource is a MemoryGeoResource object which has a  
> ScratchResourceInfo object which contains a FeatureListener.  This  
> Featurelistener calculates in void changed(...) (implemented method  
> of interface FeatureListener()) the new bounding box but this  
> method is never called when adding new features to the resource.
>
> Which object do I have to add to which 'eventmanager' that this  
> method will be called?
>
> I really hope that someone can help me. If I can't reuse my  
> resource due to this problem, I have to generate a new resource of  
> the same feature type which means to copy the feature type or write  
> my own memory memorydatastore (since the name of the feature type  
> is used for distinguish the resources).
>
>
> Another problem with the envelope of a temporary layer:
> The first time the resource (geometry: Point) is created, the Style  
> for this resource is set in such a way that an external graphic  
> (17x17 pixel) is shown. In my application the user can activate via  
> an action that an attribute of this feature is shown as a text  
> string next to the point in the map. If the user wants that, a  
> method changes the Style of this layer (confusing SLD stuff :-) and  
> the text is shown *but* this text is also clipped at a bounding  
> box /envelope containg the features of the resources. Therefore the  
> text of feature which lays at the right (eastern) edge of the  
> envelope of this resource is not shown since it would be outside  
> the envelope. Even if the user zooms out (that there would be  
> enough space on the map, which as another (larger) envelope).
> I tested this behaviour with udig standalone (1.1RC9) and there is  
> the same problem: When you create a new temporary layer and add a  
> attribute which you can show in the map via changing the style of  
> the layer, then this text is not shown if the feature is the  
> topmost or near the right (eastern) edge.
>
> tony roth
>
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