X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/df11677afd55ef592330a05c43ed4baa81b60572..c253ce33997451b6b44777254b38a364d597c492:/app/models/way.rb diff --git a/app/models/way.rb b/app/models/way.rb index de69f7565..c9e695b32 100644 --- a/app/models/way.rb +++ b/app/models/way.rb @@ -1,15 +1,24 @@ class Way < ActiveRecord::Base require 'xml/libxml' + + include ConsistencyValidations - belongs_to :user + set_table_name 'current_ways' - has_many :nodes, :through => :way_nodes, :order => 'sequence_id' - has_many :way_nodes, :foreign_key => 'id', :order => 'sequence_id' - has_many :way_tags, :foreign_key => 'id' + validates_presence_of :changeset_id, :timestamp + validates_inclusion_of :visible, :in => [ true, false ] + + belongs_to :changeset has_many :old_ways, :foreign_key => 'id', :order => 'version' - set_table_name 'current_ways' + has_many :way_nodes, :foreign_key => 'id', :order => 'sequence_id' + has_many :nodes, :through => :way_nodes, :order => 'sequence_id' + + has_many :way_tags, :foreign_key => 'id' + + has_many :containing_relation_members, :class_name => "RelationMember", :as => :member + has_many :containing_relations, :class_name => "Relation", :through => :containing_relation_members, :source => :relation, :extend => ObjectFinder def self.from_xml(xml, create=false) begin @@ -33,14 +42,17 @@ class Way < ActiveRecord::Base end way.version = pt['version'] + way.changeset_id = pt['changeset'] if create way.timestamp = Time.now way.visible = true else if pt['timestamp'] - way.timestamp = Time.parse(pt['timestamp']) + way.timestamp = Time.parse(pt['timestamp']) end + # if visible isn't present then it defaults to true + way.visible = (pt['visible'] or true) end pt.find('tag').each do |tag| @@ -77,18 +89,19 @@ class Way < ActiveRecord::Base el1['visible'] = self.visible.to_s el1['timestamp'] = self.timestamp.xmlschema el1['version'] = self.version.to_s + el1['changeset'] = self.changeset_id.to_s user_display_name_cache = {} if user_display_name_cache.nil? - if user_display_name_cache and user_display_name_cache.key?(self.user_id) + if user_display_name_cache and user_display_name_cache.key?(self.changeset.user_id) # use the cache if available - elsif self.user.data_public? - user_display_name_cache[self.user_id] = self.user.display_name + elsif self.changeset.user.data_public? + user_display_name_cache[self.changeset.user_id] = self.changeset.user.display_name else - user_display_name_cache[self.user_id] = nil + user_display_name_cache[self.changeset.user_id] = nil end - el1['user'] = user_display_name_cache[self.user_id] unless user_display_name_cache[self.user_id].nil? + el1['user'] = user_display_name_cache[self.changeset.user_id] unless user_display_name_cache[self.changeset.user_id].nil? # make sure nodes are output in sequence_id order ordered_nodes = [] @@ -158,12 +171,32 @@ class Way < ActiveRecord::Base def add_tag_keyval(k, v) @tags = Hash.new unless @tags + + # duplicate tags are now forbidden, so we can't allow values + # in the hash to be overwritten. + raise OSM::APIDuplicateTagsError.new if @tags.include? k + @tags[k] = v end + ## + # the integer coords (i.e: unscaled) bounding box of the way, assuming + # straight line segments. + def bbox + lons = nodes.collect { |n| n.longitude } + lats = nodes.collect { |n| n.latitude } + [ lons.min, lats.min, lons.max, lats.max ] + end + def save_with_history! t = Time.now + # update the bounding box, but don't save it as the controller knows the + # lifetime of the change better. note that this has to be done both before + # and after the save, so that nodes from both versions are included in the + # bbox. + changeset.update_bbox!(bbox) unless nodes.empty? + Way.transaction do self.version += 1 self.timestamp = t @@ -193,23 +226,41 @@ class Way < ActiveRecord::Base old_way = OldWay.from_way(self) old_way.timestamp = t old_way.save_with_dependencies! + + # update and commit the bounding box, now that way nodes + # have been updated and we're in a transaction. + changeset.update_bbox!(bbox) unless nodes.empty? + changeset.save! end end def update_from(new_way, user) + check_consistency(self, new_way, user) if !new_way.preconditions_ok? raise OSM::APIPreconditionFailedError.new - else - self.user_id = user.id - self.tags = new_way.tags - self.nds = new_way.nds - self.visible = true - save_with_history! end + self.changeset_id = new_way.changeset_id + self.tags = new_way.tags + self.nds = new_way.nds + self.visible = true + save_with_history! + end + + def create_with_history(user) + check_create_consistency(self, user) + if !self.preconditions_ok? + raise OSM::APIPreconditionFailedError.new + end + self.version = 0 + self.visible = true + save_with_history! end def preconditions_ok? return false if self.nds.empty? + if self.nds.length > APP_CONFIG['max_number_of_way_nodes'] + raise OSM::APITooManyWayNodesError.new(self.nds.count, APP_CONFIG['max_number_of_way_nodes']) + end self.nds.each do |n| node = Node.find(:first, :conditions => ["id = ?", n]) unless node and node.visible @@ -219,20 +270,14 @@ class Way < ActiveRecord::Base return true end - # Delete the way and it's relations, but don't really delete it - set its visibility to false and update the history etc to maintain wiki-like functionality. - def delete_with_relations_and_history(user) + def delete_with_history!(new_way, user) + check_consistency(self, new_way, user) if self.visible - # FIXME - # this should actually delete the relations, - # not just throw a PreconditionFailed if it's a member of a relation!! - - # FIXME: this should probably renamed to delete_with_history if RelationMember.find(:first, :joins => "INNER JOIN current_relations ON current_relations.id=current_relation_members.id", - :conditions => [ "visible = 1 AND member_type='way' and member_id=?", self.id]) + :conditions => [ "visible = ? AND member_type='way' and member_id=? ", true, self.id]) raise OSM::APIPreconditionFailedError - # end FIXME else - self.user_id = user.id + self.changeset_id = new_way.changeset_id self.tags = [] self.nds = [] self.visible = false @@ -244,27 +289,54 @@ class Way < ActiveRecord::Base end # delete a way and it's nodes that aren't part of other ways, with history - def delete_with_relations_and_nodes_and_history(user) - - node_ids = self.nodes.collect {|node| node.id } - node_ids_not_to_delete = [] - way_nodes = WayNode.find(:all, :conditions => "node_id in (#{node_ids.join(',')}) and id != #{self.id}") - - node_ids_not_to_delete = way_nodes.collect {|way_node| way_node.node_id} - - node_ids_to_delete = node_ids - node_ids_not_to_delete + # FIXME: merge the potlatch code to delete the relations + def delete_with_relations_and_nodes_and_history(user) # delete the nodes not used by other ways - node_ids_to_delete.each do |node_id| + self.unshared_node_ids.each do |node_id| n = Node.find(node_id) n.user_id = user.id n.visible = false n.save_with_history! end + # FIXME needs more information passed in so that the changeset can be updated self.user_id = user.id - self.delete_with_relations_and_history(user) + self.delete_with_history(user) + end + + # Find nodes that belong to this way only + def unshared_node_ids + node_ids = self.nodes.collect { |node| node.id } + unless node_ids.empty? + way_nodes = WayNode.find(:all, :conditions => "node_id in (#{node_ids.join(',')}) and id != #{self.id}") + node_ids = node_ids - way_nodes.collect { |way_node| way_node.node_id } + end + + return node_ids + end + + # Temporary method to match interface to nodes + def tags_as_hash + return self.tags + end + + ## + # if any referenced nodes are placeholder IDs (i.e: are negative) then + # this calling this method will fix them using the map from placeholders + # to IDs +id_map+. + def fix_placeholders!(id_map) + self.nds.map! do |node_id| + if node_id < 0 + new_id = id_map[:node][node_id] + raise "invalid placeholder for #{node_id.inspect}: #{new_id.inspect}" if new_id.nil? + new_id + else + node_id + end + end end + end