OGCServer: add support for load_map() within WMSFactory (thanks xcacou,theosys,and tmcw for early patches) (closes #129)

CHANGELOG

@@ -13,6 +13,9 @@ For a complete change history, see the SVN log.
 
 Current Version (0.6.0-dev, SVN trunk):
 ---------------------------------------
+
+- OGCServer: Added support for load_map(), allowing reading of XML styles and layers (r901)
+
 - OGCServer: Enabled friendly html output when in debug mode (debug=1 in ogcserver.conf) (r899)
 
 - Filter parsing: Allow numbers in the filter field name.

bindings/python/mapnik/ogcserver/WMS.py

@@ -19,11 +19,11 @@
 #
 # $Id$
 
-from common import Version
+from common import Version, copy
 from exceptions import OGCException, ServerConfigurationError
 from wms111 import ServiceHandler as ServiceHandler111
 from wms130 import ServiceHandler as ServiceHandler130
-from mapnik import Style, Layer
+from mapnik import Style, Map, load_map 
 import re
 
 def ServiceHandlerFactory(conf, mapfactory, onlineresource, version):
@@ -43,11 +43,34 @@ class BaseWMSFactory:
         self.styles = {}
         self.aggregatestyles = {}
 
+    def loadXML(self, xmlfile, strict=False):
+        tmp_map = Map(0,0)
+        load_map (tmp_map, xmlfile, strict)
+        for lyr in tmp_map.layers:   
+            style_count = len(lyr.styles)
+            if style_count == 0:
+                raise ServerConfigurationError("Cannot register Layer '%s' without a style" % lyr.name)
+            elif style_count == 1:
+                style_obj = tmp_map.find_style(lyr.styles[0])
+                style_name = lyr.styles[0]
+                if style_name not in self.aggregatestyles.keys() and style_name not in self.styles.keys():
+                    self.register_style(style_name, copy(style_obj))
+                self.register_layer(copy(lyr), style_name, extrastyles=(style_name,))
+            elif style_count > 1:
+                for style_name in lyr.styles:
+                    style_obj = tmp_map.find_style(style_name)
+                    self.register_style(style_name, copy(style_obj))
+                    del style_obj
+                aggregates = tuple([sty for sty in lyr.styles])
+                aggregates_name = '%s_aggregates' % lyr.name
+                self.register_aggregate_style(aggregates_name,aggregates)
+                self.register_layer(copy(lyr), aggregates_name, extrastyles=aggregates)
+
     def register_layer(self, layer, defaultstyle, extrastyles=()):
         layername = layer.name
         if not layername:
             raise ServerConfigurationError('Attempted to register an unnamed layer.')
-        if not re.match('^\+init=epsg:\d+$', layer.srs):
+        if not re.match('^\+init=epsg:\d+$', layer.srs) and not re.match('^\+proj=.*$', layer.srs):
             raise ServerConfigurationError('Attempted to register a layer without an epsg projection defined.')
         if defaultstyle not in self.styles.keys() + self.aggregatestyles.keys():
             raise ServerConfigurationError('Attempted to register a layer with an non-existent default style.')
@@ -68,7 +91,7 @@ class BaseWMSFactory:
         if not name:
             raise ServerConfigurationError('Attempted to register a style without providing a name.')
         if name in self.aggregatestyles.keys() or name in self.styles.keys():
-            raise ServerConfigurationError('Attempted to register an aggregate style with a name already in use.')
+            raise ServerConfigurationError("Attempted to register a style with a name already in use: '%s'" % name)
         if not isinstance(style, Style):
             raise ServerConfigurationError('Bad style object passed to register_style() for style "%s".' % name)
         self.styles[name] = style
@@ -92,4 +115,4 @@ class BaseWMSFactory:
         for layer in self.layers.values():
             for style in list(layer.styles) + list(layer.wmsextrastyles):
                 if style not in self.styles.keys() + self.aggregatestyles.keys():
-                    raise ServerConfigurationError('Layer "%s" refers to undefined style "%s".' % (layer.name(), style))
+                    raise ServerConfigurationError('Layer "%s" refers to undefined style "%s".' % (layer.name, style))