Added trackpoint serving support to 0.4 API

[rails.git] / app / models / way.rb

diff --git a/app/models/way.rb b/app/models/way.rb
index 2773ecc7b87ed83faec5e871d95d34f95b14fb42..65bb3158debd3c545c47b869ed6de3c50a900ba6 100644 (file)
--- a/app/models/way.rb
+++ b/app/models/way.rb
@@ -2,6 +2,12 @@ class Way < ActiveRecord::Base
   require 'xml/libxml'
   
   belongs_to :user
+
+  has_many :way_segments, :foreign_key => 'id'
+  has_many :way_tags, :foreign_key => 'id'
+
+  has_many :old_ways, :foreign_key => :id
+
   set_table_name 'current_ways'
 
   def self.from_xml(xml, create=false)
@@ -32,23 +38,96 @@ class Way < ActiveRecord::Base
       pt.find('seg').each do |seg|
         way.add_seg_num(seg['id'])
       end
- 
 
     end
 
     return way
   end
 
+  def to_xml
+    doc = OSM::API.new.get_xml_doc
+    doc.root << to_xml_node()
+    return doc
+  end
+
+  def to_xml_node(visible_segments = nil, user_display_name_cache = nil)
+    el1 = XML::Node.new 'way'
+    el1['id'] = self.id.to_s
+    el1['visible'] = self.visible.to_s
+    el1['timestamp'] = self.timestamp.xmlschema
+
+    user_display_name_cache = {} if user_display_name_cache.nil?
+    
+    if user_display_name_cache and user_display_name_cache[self.user_id]
+      # use the cache if available
+    else
+      user_display_name_cache[self.user_id] = self.user.display_name
+    end
+    
+    #el1['user'] = self.user.display_name if self.user.data_public?
+    el1['user'] = user_display_name_cache[self.user_id]
+
+    # make sure segments are output in sequence_id order
+    ordered_segments = []
+    self.way_segments.each do |seg|
+      if visible_segments
+        # if there is a list of visible segments then use that to weed out deleted segments
+        if visible_segments[seg.segment_id]
+          ordered_segments[seg.sequence_id] = seg.segment_id.to_s
+        end
+      else
+        # otherwise, manually go to the db to check things
+        if seg.segment.visible? and seg.segment.from_node.visible? and seg.segment.to_node.visible?
+          ordered_segments[seg.sequence_id] = seg.segment_id.to_s
+        end
+      end
+    end
+
+    ordered_segments.each do |seg_id|
+      if seg_id
+        e = XML::Node.new 'seg'
+        e['id'] = seg_id
+        el1 << e
+      end
+    end
+ 
+    self.way_tags.each do |tag|
+      e = XML::Node.new 'tag'
+      e['k'] = tag.k
+      e['v'] = tag.v
+      el1 << e
+    end
+    return el1
+  end 
+
   def segs
-    @segs = Array.new unless @segs
+    unless @segs
+        @segs = Array.new
+        self.way_segments.each do |seg|
+            @segs += [seg.segment_id]
+        end
+    end
     @segs
   end
 
   def tags
-    @tags = Hash.new unless @tags
+    unless @tags
+        @tags = Hash.new
+        self.way_tags.each do |tag|
+            @tags[tag.k] = tag.v
+        end
+    end
     @tags
   end
 
+  def segs=(s)
+    @segs = s
+  end
+
+  def tags=(t)
+    @tags = t
+  end
+
   def add_seg_num(n)
     @segs = Array.new unless @segs
     @segs << n.to_i
@@ -74,8 +153,31 @@ class Way < ActiveRecord::Base
       tag.save
     end
 
+    WaySegment.delete_all(['id = ?', self.id])
+    
+    i = 0
+    self.segs.each do |n|
+      seg = WaySegment.new
+      seg.id = self.id
+      seg.segment_id = n
+      seg.sequence_id = i
+      seg.save
+      i += 1
+    end
+
     old_way = OldWay.from_way(self)
-    old_way.save
+    old_way.timestamp = t
+    old_way.save_with_dependencies
+  end
+
+  def preconditions_ok?
+    self.segs.each do |n|
+      segment = Segment.find(n)
+      unless segment and segment.visible and segment.preconditions_ok?
+        return false
+      end
+    end
+    return true
   end
 
 end