X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/e9527b363da441337ac8c44c9d3d3feada3eaa9c..34e3e51456774127d43408b7ab65c24f41373f62:/app/models/node.rb diff --git a/app/models/node.rb b/app/models/node.rb index 5f4f7af6a..755dc82ce 100644 --- a/app/models/node.rb +++ b/app/models/node.rb @@ -3,23 +3,25 @@ class Node < ActiveRecord::Base include GeoRecord include ConsistencyValidations + include NotRedactable + include ObjectMetadata - set_table_name 'current_nodes' + self.table_name = "current_nodes" belongs_to :changeset - has_many :old_nodes, :foreign_key => :id + has_many :old_nodes, -> { order(:version) } has_many :way_nodes has_many :ways, :through => :way_nodes - has_many :node_tags, :foreign_key => :id - + has_many :node_tags + has_many :old_way_nodes has_many :ways_via_history, :class_name=> "Way", :through => :old_way_nodes, :source => :way 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 + has_many :containing_relations, :class_name => "Relation", :through => :containing_relation_members, :source => :relation validates_presence_of :id, :on => :update validates_presence_of :timestamp,:version, :changeset_id @@ -30,59 +32,37 @@ class Node < ActiveRecord::Base validate :validate_position validates_associated :changeset + scope :visible, -> { where(:visible => true) } + scope :invisible, -> { where(:visible => false) } + # Sanity check the latitude and longitude and add an error if it's broken def validate_position - errors.add_to_base("Node is not in the world") unless in_world? - end - - # - # Search for nodes matching tags within bounding_box - # - # Also adheres to limitations such as within max_number_of_nodes - # - def self.search(bounding_box, tags = {}) - min_lon, min_lat, max_lon, max_lat = *bounding_box - # @fixme a bit of a hack to search for only visible nodes - # couldn't think of another to add to tags condition - #conditions_hash = tags.merge({ 'visible' => 1 }) - - # using named placeholders http://www.robbyonrails.com/articles/2005/10/21/using-named-placeholders-in-ruby - #keys = [] - #values = {} - - #conditions_hash.each do |key,value| - # keys << "#{key} = :#{key}" - # values[key.to_sym] = value - #end - #conditions = keys.join(' AND ') - - find_by_area(min_lat, min_lon, max_lat, max_lon, - :conditions => {:visible => true}, - :limit => APP_CONFIG['max_number_of_nodes']+1) + errors.add(:base, "Node is not in the world") unless in_world? end # Read in xml as text and return it's Node object representation def self.from_xml(xml, create=false) begin - p = XML::Parser.new - p.string = xml + p = XML::Parser.string(xml) doc = p.parse doc.find('//osm/node').each do |pt| return Node.from_xml_node(pt, create) end - rescue LibXML::XML::Error => ex + raise OSM::APIBadXMLError.new("node", xml, "XML doesn't contain an osm/node element.") + rescue LibXML::XML::Error, ArgumentError => ex raise OSM::APIBadXMLError.new("node", xml, ex.message) end end def self.from_xml_node(pt, create=false) node = Node.new - + raise OSM::APIBadXMLError.new("node", pt, "lat missing") if pt['lat'].nil? raise OSM::APIBadXMLError.new("node", pt, "lon missing") if pt['lon'].nil? - node.lat = pt['lat'].to_f - node.lon = pt['lon'].to_f + node.lat = OSM.parse_float(pt['lat'], OSM::APIBadXMLError, "node", pt, "lat not a number") + node.lon = OSM.parse_float(pt['lon'], OSM::APIBadXMLError, "node", pt, "lon not a number") + raise OSM::APIBadXMLError.new("node", pt, "Changeset id is missing") if pt['changeset'].nil? node.changeset_id = pt['changeset'].to_i raise OSM::APIBadUserInput.new("The node is outside this world") unless node.in_world? @@ -92,26 +72,25 @@ class Node < ActiveRecord::Base node.version = create ? 0 : pt['version'].to_i unless create - if pt['id'] != '0' - node.id = pt['id'].to_i - end + raise OSM::APIBadXMLError.new("node", pt, "ID is required when updating.") if pt['id'].nil? + node.id = pt['id'].to_i + # .to_i will return 0 if there is no number that can be parsed. + # We want to make sure that there is no id with zero anyway + raise OSM::APIBadUserInput.new("ID of node cannot be zero when updating.") if node.id == 0 end - # visible if it says it is, or as the default if the attribute - # is missing. - node.visible = pt['visible'].nil? or pt['visible'] == 'true' + # We don't care about the time, as it is explicitly set on create/update/delete + # We don't care about the visibility as it is implicit based on the action + # and set manually before the actual delete + node.visible = true - if create - node.timestamp = Time.now - else - if pt['timestamp'] - node.timestamp = Time.parse(pt['timestamp']) - end - end - - tags = [] + # Start with no tags + node.tags = Hash.new + # Add in any tags from the XML pt.find('tag').each do |tag| + raise OSM::APIBadXMLError.new("node", pt, "tag is missing key") if tag['k'].nil? + raise OSM::APIBadXMLError.new("node", pt, "tag is missing value") if tag['v'].nil? node.add_tag_key_val(tag['k'],tag['v']) end @@ -122,55 +101,63 @@ class Node < ActiveRecord::Base # the bounding box around a node, which is used for determining the changeset's # bounding box def bbox - [ longitude, latitude, longitude, latitude ] + BoundingBox.new(longitude, latitude, longitude, latitude) end # Should probably be renamed delete_from to come in line with update def delete_with_history!(new_node, user) unless self.visible - raise OSM::APIAlreadyDeletedError.new + raise OSM::APIAlreadyDeletedError.new("node", new_node.id) end - # need to start the transaction here, so that the database can + # need to start the transaction here, so that the database can # provide repeatable reads for the used-by checks. this means it # shouldn't be possible to get race conditions. Node.transaction do + self.lock! check_consistency(self, new_node, user) - if WayNode.find(:first, :joins => "INNER JOIN current_ways ON current_ways.id = current_way_nodes.id", :conditions => [ "current_ways.visible = ? AND current_way_nodes.node_id = ?", true, self.id ]) - raise OSM::APIPreconditionFailedError.new - elsif RelationMember.find(:first, :joins => "INNER JOIN current_relations ON current_relations.id=current_relation_members.id", :conditions => [ "visible = ? AND member_type='node' and member_id=? ", true, self.id]) - raise OSM::APIPreconditionFailedError.new - else - self.changeset_id = new_node.changeset_id - self.visible = false - - # update the changeset with the deleted position - changeset.update_bbox!(bbox) - - save_with_history! - end + ways = Way.joins(:way_nodes).where(:visible => true, :current_way_nodes => { :node_id => id }).order(:id) + raise OSM::APIPreconditionFailedError.new("Node #{self.id} is still used by ways #{ways.collect { |w| w.id }.join(",")}.") unless ways.empty? + + rels = Relation.joins(:relation_members).where(:visible => true, :current_relation_members => { :member_type => "Node", :member_id => id }).order(:id) + raise OSM::APIPreconditionFailedError.new("Node #{self.id} is still used by relations #{rels.collect { |r| r.id }.join(",")}.") unless rels.empty? + + self.changeset_id = new_node.changeset_id + self.tags = {} + self.visible = false + + # update the changeset with the deleted position + changeset.update_bbox!(bbox) + + save_with_history! end end def update_from(new_node, user) - check_consistency(self, new_node, user) + Node.transaction do + self.lock! + check_consistency(self, new_node, user) - # update changeset with *old* position first - changeset.update_bbox!(bbox); + # update changeset first + self.changeset_id = new_node.changeset_id + self.changeset = new_node.changeset - # FIXME logic needs to be double checked - self.changeset_id = new_node.changeset_id - self.latitude = new_node.latitude - self.longitude = new_node.longitude - self.tags = new_node.tags - self.visible = true + # update changeset bbox with *old* position first + changeset.update_bbox!(bbox); - # update changeset with *new* position - changeset.update_bbox!(bbox); + # FIXME logic needs to be double checked + self.latitude = new_node.latitude + self.longitude = new_node.longitude + self.tags = new_node.tags + self.visible = true - save_with_history! + # update changeset bbox with *new* position + changeset.update_bbox!(bbox); + + save_with_history! + end end - + def create_with_history(user) check_create_consistency(self, user) self.version = 0 @@ -188,39 +175,20 @@ class Node < ActiveRecord::Base return doc end - def to_xml_node(user_display_name_cache = nil) - el1 = XML::Node.new 'node' - el1['id'] = self.id.to_s - el1['lat'] = self.lat.to_s - el1['lon'] = self.lon.to_s - 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.changeset.user_id) - # use the cache if available - 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.changeset.user_id] = nil - end + def to_xml_node(changeset_cache = {}, user_display_name_cache = {}) + el = XML::Node.new 'node' + el['id'] = self.id.to_s - if not user_display_name_cache[self.changeset.user_id].nil? - el1['user'] = user_display_name_cache[self.changeset.user_id] - el1['uid'] = self.changeset.user_id.to_s - end + add_metadata_to_xml_node(el, self, changeset_cache, user_display_name_cache) - self.tags.each do |k,v| - el2 = XML::Node.new('tag') - el2['k'] = k.to_s - el2['v'] = v.to_s - el1 << el2 + if self.visible? + el['lat'] = self.lat.to_s + el['lon'] = self.lon.to_s end - el1['visible'] = self.visible.to_s - el1['timestamp'] = self.timestamp.xmlschema - return el1 + add_tags_to_xml_node(el, self.node_tags) + + return el end def tags_as_hash @@ -228,18 +196,12 @@ class Node < ActiveRecord::Base end def tags - unless @tags - @tags = {} - self.node_tags.each do |tag| - @tags[tag.k] = tag.v - end - end - @tags + @tags ||= Hash[self.node_tags.collect { |t| [t.k, t.v] }] end def tags=(t) - @tags = t - end + @tags = t + end def add_tag_key_val(k,v) @tags = Hash.new unless @tags @@ -261,14 +223,14 @@ class Node < ActiveRecord::Base ## # dummy method to make the interfaces of node, way and relation # more consistent. - def fix_placeholders!(id_map) + def fix_placeholders!(id_map, placeholder_id = nil) # nodes don't refer to anything, so there is nothing to do here end - + private def save_with_history! - t = Time.now + t = Time.now.getutc Node.transaction do self.version += 1 self.timestamp = t @@ -276,14 +238,14 @@ class Node < ActiveRecord::Base # Create a NodeTag tags = self.tags - NodeTag.delete_all(['id = ?', self.id]) + NodeTag.delete_all(:node_id => self.id) tags.each do |k,v| tag = NodeTag.new - tag.k = k - tag.v = v - tag.id = self.id + tag.node_id = self.id + tag.k = k + tag.v = v tag.save! - end + end # Create an OldNode old_node = OldNode.from_node(self) @@ -297,5 +259,5 @@ class Node < ActiveRecord::Base changeset.save! end end - + end