app/models/wms.rb in gb_mapfish_appserver-0.9.4 vs app/models/wms.rb in gb_mapfish_appserver-0.9.5

@@ -7,9 +7,42 @@
 
   def initialize(name)
     @name = name
   end
 
+  # return SLD for selection
+  def self.sld_selection(layer, filter_property, filter_values)
+    sld = '<StyledLayerDescriptor xmlns="http://www.opengis.net/sld" version="1.0.0" xmlns:ogc="http://www.opengis.net/ogc" xmlns:gml="http://www.opengis.net/gml">'
+    sld <<  "<NamedLayer>"
+    sld <<    "<Name>#{layer.name}</Name>"
+    sld <<    "<UserStyle>"
+    sld <<      "<Name>default</Name>"
+    sld <<      "<FeatureTypeStyle>"
+
+    filter_values.each do |value|
+      # NOTE: use a separate rule for each value as workaround, as combined filter with <ogc:Or> does not work as expected
+      sld <<      "<Rule>"
+      sld <<        "<Name>show-#{value}</Name>"
+      sld <<        '<ogc:Filter>'
+      sld <<          "<ogc:PropertyIsEqualTo>"
+      sld <<            "<ogc:PropertyName>#{filter_property}</ogc:PropertyName>"
+      sld <<            "<ogc:Literal>#{value}</ogc:Literal>"
+      sld <<          "</ogc:PropertyIsEqualTo>"
+      sld <<        "</ogc:Filter>"
+      sld << layer.selection_symbolizer
+      sld <<        "<MinScaleDenominator>0</MinScaleDenominator>"
+      sld <<        "<MaxScaleDenominator>999999999</MaxScaleDenominator>"
+      sld <<      "</Rule>"
+    end
+
+    sld <<      "</FeatureTypeStyle>"
+    sld <<    "</UserStyle>"
+    sld <<  "</NamedLayer>"
+    sld << "</StyledLayerDescriptor>"
+
+    sld
+  end
+
   def self.access_filters(ability, user, topic_name, layers)
     access_filters = {}
     unless topic_name.blank?
       layers.each do |layer|
         access_filter = ability.access_filter("WMS", topic_name, layer)