belongs_to :user
- has_many :way_segments, :foreign_key => 'id'
+ has_many :way_segments, :foreign_key => 'id', :order => 'sequence_id'
has_many :way_tags, :foreign_key => 'id'
+ has_many :old_ways, :foreign_key => 'id', :order => 'version'
+
set_table_name 'current_ways'
def self.from_xml(xml, create=false)
- p = XML::Parser.new
- p.string = xml
- doc = p.parse
+ begin
+ p = XML::Parser.new
+ p.string = xml
+ doc = p.parse
- way = Way.new
+ way = Way.new
- doc.find('//osm/way').each do |pt|
- unless create and pt['id'] == '0'
- way.id = pt['id'].to_i
- end
+ doc.find('//osm/way').each do |pt|
+ if !create and pt['id'] != '0'
+ way.id = pt['id'].to_i
+ end
- if create
- way.timestamp = Time.now
- way.visible = true
- else
- if pt['timestamp']
- way.timestamp = Time.parse(pt['timestamp'])
+ if create
+ way.timestamp = Time.now
+ way.visible = true
+ else
+ if pt['timestamp']
+ way.timestamp = Time.parse(pt['timestamp'])
+ end
end
- end
- pt.find('tag').each do |tag|
- way.add_tag_keyval(tag['k'], tag['v'])
- end
+ pt.find('tag').each do |tag|
+ way.add_tag_keyval(tag['k'], tag['v'])
+ end
- pt.find('seg').each do |seg|
- way.add_seg_num(seg['id'])
+ pt.find('seg').each do |seg|
+ way.add_seg_num(seg['id'])
+ end
end
-
+ rescue
+ way = nil
end
return way
end
def to_xml
- doc = XML::Document.new
- doc.encoding = 'UTF-8'
- root = XML::Node.new 'osm'
- root['version'] = '0.4'
- root['generator'] = 'OpenStreetMap server'
-
- doc.root = root
-
- root << to_xml_node()
+ doc = OSM::API.new.get_xml_doc
+ doc.root << to_xml_node()
return doc
end
- def to_xml_node
+ 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?
- self.way_segments.each do |seg| # FIXME need to make sure they come back in the right order
- e = XML::Node.new 'seg'
- e['id'] = seg.segment_id.to_s
- el1 << e
+ if user_display_name_cache and user_display_name_cache.key?(self.user_id)
+ # use the cache if available
+ elsif self.user.data_public?
+ user_display_name_cache[self.user_id] = self.user.display_name
+ else
+ user_display_name_cache[self.user_id] = nil
+ end
+
+ el1['user'] = user_display_name_cache[self.user_id] unless user_display_name_cache[self.user_id].nil?
+
+ # 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 and seg_id != '0'
+ e = XML::Node.new 'seg'
+ e['id'] = seg_id
+ el1 << e
+ end
end
self.way_tags.each do |tag|
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
@tags[k] = v
end
- def save_with_history
+ def save_with_history!
t = Time.now
- self.timestamp = t
- self.save
-
- WayTag.delete_all(['id = ?', self.id])
-
- self.tags.each do |k,v|
- tag = WayTag.new
- tag.k = k
- tag.v = v
- tag.id = self.id
- tag.save
+
+ Way.transaction do
+ self.timestamp = t
+ self.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
+ WayTag.transaction do
+ tags = self.tags
+
+ WayTag.delete_all(['id = ?', self.id])
+
+ tags.each do |k,v|
+ tag = WayTag.new
+ tag.k = k
+ tag.v = v
+ tag.id = self.id
+ tag.save!
+ end
+ end
+
+ WaySegment.transaction do
+ segs = self.segs
+
+ WaySegment.delete_all(['id = ?', self.id])
+
+ i = 1
+ segs.each do |n|
+ seg = WaySegment.new
+ seg.id = self.id
+ seg.segment_id = n
+ seg.sequence_id = i
+ seg.save!
+ i += 1
+ end
end
old_way = OldWay.from_way(self)
old_way.timestamp = t
- old_way.save_with_dependencies
+ old_way.save_with_dependencies!
+ end
+
+ def preconditions_ok?
+ return false if self.segs.empty?
+ self.segs.each do |n|
+ segment = Segment.find(:first, :conditions => ["id = ?", n])
+ unless segment and segment.visible and segment.preconditions_ok?
+ return false
+ end
+ end
+ return true
end
end
projects / rails.git / blobdiff