faset over fra Z3950 til google books

python/gdata/maps/data.py

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+#!/usr/bin/env python
+#
+# Copyright (C) 2009 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+"""Data model classes for parsing and generating XML for the Maps Data API."""
+
+
+__author__ = 'api.roman.public@google.com (Roman Nurik)'
+
+
+import re
+import atom.core
+import gdata.data
+
+
+MAP_ATOM_ID_PATTERN = re.compile('/maps/feeds/maps/'
+                                 '(?P<user_id>\w+)/'
+                                 '(?P<map_id>\w+)$')
+
+FEATURE_ATOM_ID_PATTERN = re.compile('/maps/feeds/features/'
+                                     '(?P<user_id>\w+)/'
+                                     '(?P<map_id>\w+)/'
+                                     '(?P<feature_id>\w+)$')
+
+# The KML mime type
+KML_CONTENT_TYPE = 'application/vnd.google-earth.kml+xml'
+
+# The OGC KML 2.2 namespace
+KML_NAMESPACE = 'http://www.opengis.net/kml/2.2'
+
+class MapsDataEntry(gdata.data.GDEntry):
+  """Adds convenience methods inherited by all Maps Data entries."""
+
+  def get_user_id(self):
+    """Extracts the user ID of this entry."""
+    if self.id.text:
+      match = self.__class__.atom_id_pattern.search(self.id.text)
+      if match:
+        return match.group('user_id')
+    return None
+
+  GetUserId = get_user_id
+
+  def get_map_id(self):
+    """Extracts the map ID of this entry."""
+    if self.id.text:
+      match = self.__class__.atom_id_pattern.search(self.id.text)
+      if match:
+        return match.group('map_id')
+    return None
+
+  GetMapId = get_map_id
+
+
+class Map(MapsDataEntry):
+  """Represents a map which belongs to the user."""
+  atom_id_pattern = MAP_ATOM_ID_PATTERN
+
+
+class MapFeed(gdata.data.GDFeed):
+  """Represents an atom feed of maps."""
+  entry = [Map]
+
+
+class KmlContent(atom.data.Content):
+  """Represents an atom content element that encapsulates KML content."""
+
+  def __init__(self, **kwargs):
+    super(KmlContent, self).__init__(type=KML_CONTENT_TYPE, **kwargs)
+    if 'kml' in kwargs:
+      self.kml = kwargs['kml']
+
+  def _get_kml(self):
+    if self.children:
+      return self.children[0]
+    else:
+      return ''
+
+  def _set_kml(self, kml):
+    if not kml:
+      self.children = []
+      return
+
+    if type(kml) == str:
+      kml = atom.core.parse(kml)
+      if not kml.namespace:
+        kml.namespace = KML_NAMESPACE
+
+    self.children = [kml]
+
+  kml = property(_get_kml, _set_kml)
+
+
+class Feature(MapsDataEntry):
+  """Represents a single feature in a map."""
+  atom_id_pattern = FEATURE_ATOM_ID_PATTERN
+  content = KmlContent
+
+  def get_feature_id(self):
+    """Extracts the feature ID of this feature."""
+    if self.id.text:
+      match = self.__class__.atom_id_pattern.search(self.id.text)
+      if match:
+        return match.group('feature_id')
+    return None
+
+  GetFeatureId = get_feature_id
+
+
+class FeatureFeed(gdata.data.GDFeed):
+  """Represents an atom feed of features."""
+  entry = [Feature]