[udig-devel] Multiple selections

[Gabriel Roldán]

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 at axios.es)
Axios Engineering (http://www.axios.es)
Tel. +34 944 41 63 84
Fax. +34 944 41 64 90