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Re: [udig-devel] Multiple selections
It can be discussed an now would probably be a good time to do it. This change was added simply as a performance hint. But it is a hack. Vitali from Arbonaut has been working on a selection service for uDig which is GIS aware. Take a look at the document attached to this Jira task: http://jira.codehaus.org/browse/UDIG-1202. 

If you have comments put them on the Jira

Jesse



On 29-Jan-07, at 7:48 AM, Gabriel Roldán wrote:


Hi list,
just wanted to ask if the inability to keep a selection in more than one layer at a time is due to a design decission or something that can be discussed 
about/easy to change.
So far, the logic avoiding more than one layer to have a selection at a time 
seems to be in:
MapImpl.select( Envelope boundingBox, boolean and ){
  Layer selected = ...
  for (Layer layer : getLayersInternal()){
    if(layer == selected){
      .... //apply Filter
    }else{
      layer.setFilter(Filter.ALL);
    }
  }
}
note at line #2067 the statement layer.setFilter(Filter.ALL); is resetting the 
selection for the rest of layers to none.
Now, say I want to create an Intersect operation which intersects the selected features of a layer with the selected ones of another, not possible this way. So the question is would it be possible to remove that filter cleaning code and, if yes, what the side effects would be (if any)? or should I look for 
another way for doing that.

Regards,

Gabriel

--
Gabriel Roldán (groldan@xxxxxxxx)
Axios Engineering (http://www.axios.es)
Tel. +34 944 41 63 84
Fax. +34 944 41 64 90
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