X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/41f85fb77dbd0c16f12e49091b14fcaa1264ad70..deea77ab93b4932b4bc48f91562ee31e6e7b54fc:/app/models/way.rb?ds=sidebyside diff --git a/app/models/way.rb b/app/models/way.rb index da305f082..a9fdd88ee 100644 --- a/app/models/way.rb +++ b/app/models/way.rb @@ -2,17 +2,19 @@ class Way < ActiveRecord::Base require 'xml/libxml' include ConsistencyValidations + include NotRedactable + include ObjectMetadata - set_table_name 'current_ways' + self.table_name = "current_ways" belongs_to :changeset - has_many :old_ways, :foreign_key => 'id', :order => 'version' + has_many :old_ways, -> { order(:version) } - has_many :way_nodes, :foreign_key => 'id', :order => 'sequence_id' - has_many :nodes, :through => :way_nodes, :order => 'sequence_id' + has_many :way_nodes, -> { order(:sequence_id) } + has_many :nodes, -> { order("sequence_id") }, :through => :way_nodes - has_many :way_tags, :foreign_key => 'id' + has_many :way_tags 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 @@ -25,6 +27,10 @@ class Way < ActiveRecord::Base validates_numericality_of :id, :on => :update, :integer_only => true validates_associated :changeset + scope :visible, -> { where(:visible => true) } + scope :invisible, -> { where(:visible => false) } + + # Read in xml as text and return it's Way object representation def self.from_xml(xml, create=false) begin p = XML::Parser.string(xml) @@ -33,6 +39,7 @@ class Way < ActiveRecord::Base doc.find('//osm/way').each do |pt| return Way.from_xml_node(pt, create) end + raise OSM::APIBadXMLError.new("node", xml, "XML doesn't contain an osm/way element.") rescue LibXML::XML::Error, ArgumentError => ex raise OSM::APIBadXMLError.new("way", xml, ex.message) end @@ -41,27 +48,31 @@ class Way < ActiveRecord::Base def self.from_xml_node(pt, create=false) way = Way.new - if !create and pt['id'] != '0' - way.id = pt['id'].to_i - end - + raise OSM::APIBadXMLError.new("way", pt, "Version is required when updating") unless create or not pt['version'].nil? way.version = pt['version'] - raise OSM::APIBadXMLError.new("node", pt, "Changeset is required") if pt['changeset'].nil? + raise OSM::APIBadXMLError.new("way", pt, "Changeset id is missing") if pt['changeset'].nil? way.changeset_id = pt['changeset'] - # This next section isn't required for the create, update, or delete of ways - if create - way.timestamp = Time.now.getutc - way.visible = true - else - if 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) + unless create + raise OSM::APIBadXMLError.new("way", pt, "ID is required when updating") if pt['id'].nil? + way.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 way cannot be zero when updating.") if way.id == 0 end + # We don't care about the timestamp nor the visibility as these are either + # set explicitly or implicit in the action. The visibility is set to true, + # and manually set to false before the actual delete. + way.visible = true + + # Start with no tags + way.tags = Hash.new + + # Add in any tags from the XML pt.find('tag').each do |tag| + raise OSM::APIBadXMLError.new("way", pt, "tag is missing key") if tag['k'].nil? + raise OSM::APIBadXMLError.new("way", pt, "tag is missing value") if tag['v'].nil? way.add_tag_keyval(tag['k'], tag['v']) end @@ -90,33 +101,10 @@ class Way < ActiveRecord::Base end def to_xml_node(visible_nodes = nil, changeset_cache = {}, user_display_name_cache = {}) - el1 = XML::Node.new 'way' - el1['id'] = self.id.to_s - el1['visible'] = self.visible.to_s - el1['timestamp'] = self.timestamp.xmlschema - el1['version'] = self.version.to_s - el1['changeset'] = self.changeset_id.to_s - - if changeset_cache.key?(self.changeset_id) - # use the cache if available - else - changeset_cache[self.changeset_id] = self.changeset.user_id - end + el = XML::Node.new 'way' + el['id'] = self.id.to_s - user_id = changeset_cache[self.changeset_id] - - if user_display_name_cache.key?(user_id) - # use the cache if available - elsif self.changeset.user.data_public? - user_display_name_cache[user_id] = self.changeset.user.display_name - else - user_display_name_cache[user_id] = nil - end - - if not user_display_name_cache[user_id].nil? - el1['user'] = user_display_name_cache[user_id] - el1['uid'] = user_id.to_s - end + add_metadata_to_xml_node(el, self, changeset_cache, user_display_name_cache) # make sure nodes are output in sequence_id order ordered_nodes = [] @@ -136,39 +124,23 @@ class Way < ActiveRecord::Base ordered_nodes.each do |nd_id| if nd_id and nd_id != '0' - e = XML::Node.new 'nd' - e['ref'] = nd_id - el1 << e + node_el = XML::Node.new 'nd' + node_el['ref'] = nd_id + el << node_el 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 + add_tags_to_xml_node(el, self.way_tags) + + return el end def nds - unless @nds - @nds = Array.new - self.way_nodes.each do |nd| - @nds += [nd.node_id] - end - end - @nds + @nds ||= self.way_nodes.collect { |n| n.node_id } end def tags - unless @tags - @tags = {} - self.way_tags.each do |tag| - @tags[tag.k] = tag.v - end - end - @tags + @tags ||= Hash[self.way_tags.collect { |t| [t.k, t.v] }] end def nds=(s) @@ -200,21 +172,24 @@ class Way < ActiveRecord::Base def bbox lons = nodes.collect { |n| n.longitude } lats = nodes.collect { |n| n.latitude } - [ lons.min, lats.min, lons.max, lats.max ] + BoundingBox.new(lons.min, lats.min, lons.max, lats.max) end def update_from(new_way, user) - check_consistency(self, new_way, user) - unless new_way.preconditions_ok? - raise OSM::APIPreconditionFailedError.new("Cannot update way #{self.id}: data is invalid.") + Way.transaction do + self.lock! + check_consistency(self, new_way, user) + unless new_way.preconditions_ok?(self.nds) + raise OSM::APIPreconditionFailedError.new("Cannot update way #{self.id}: data is invalid.") + end + + self.changeset_id = new_way.changeset_id + self.changeset = new_way.changeset + 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.changeset = new_way.changeset - self.tags = new_way.tags - self.nds = new_way.nds - self.visible = true - save_with_history! end def create_with_history(user) @@ -227,17 +202,25 @@ class Way < ActiveRecord::Base save_with_history! end - def preconditions_ok? + def preconditions_ok?(old_nodes = []) return false if self.nds.empty? - if self.nds.length > APP_CONFIG['max_number_of_way_nodes'] - raise OSM::APITooManyWayNodesError.new(self.nds.length, APP_CONFIG['max_number_of_way_nodes']) + if self.nds.length > MAX_NUMBER_OF_WAY_NODES + raise OSM::APITooManyWayNodesError.new(self.id, self.nds.length, MAX_NUMBER_OF_WAY_NODES) end - self.nds.each do |n| - node = Node.find(:first, :conditions => ["id = ?", n]) - unless node and node.visible - raise OSM::APIPreconditionFailedError.new("The node with id #{n} either does not exist, or is not visible") + + # check only the new nodes, for efficiency - old nodes having been checked last time and can't + # be deleted when they're in-use. + new_nds = (self.nds - old_nodes).sort.uniq + + unless new_nds.empty? + db_nds = Node.where(:id => new_nds, :visible => true) + + if db_nds.length < new_nds.length + missing = new_nds - db_nds.collect { |n| n.id } + raise OSM::APIPreconditionFailedError.new("Way #{self.id} requires the nodes with id in (#{missing.join(',')}), which either do not exist, or are not visible.") end end + return true end @@ -250,19 +233,18 @@ class Way < ActiveRecord::Base # provide repeatable reads for the used-by checks. this means it # shouldn't be possible to get race conditions. Way.transaction do + self.lock! check_consistency(self, new_way, user) - if RelationMember.find(:first, :joins => "INNER JOIN current_relations ON current_relations.id=current_relation_members.id", - :conditions => [ "visible = ? AND member_type='Way' and member_id=? ", true, self.id]) - raise OSM::APIPreconditionFailedError.new("You need to make sure that this way is not a member of a relation.") - else - self.changeset_id = new_way.changeset_id - self.changeset = new_way.changeset + rels = Relation.joins(:relation_members).where(:visible => true, :current_relation_members => { :member_type => "Way", :member_id => id }).order(:id) + raise OSM::APIPreconditionFailedError.new("Way #{self.id} is still used by relations #{rels.collect { |r| r.id }.join(",")}.") unless rels.empty? - self.tags = [] - self.nds = [] - self.visible = false - save_with_history! - end + self.changeset_id = new_way.changeset_id + self.changeset = new_way.changeset + + self.tags = [] + self.nds = [] + self.visible = false + save_with_history! end end @@ -305,17 +287,17 @@ class Way < ActiveRecord::Base self.save! tags = self.tags - WayTag.delete_all(['id = ?', self.id]) + WayTag.delete_all(:way_id => self.id) tags.each do |k,v| tag = WayTag.new + tag.way_id = self.id tag.k = k tag.v = v - tag.id = self.id tag.save! end nds = self.nds - WayNode.delete_all(['id = ?', self.id]) + WayNode.delete_all(:way_id => self.id) sequence = 1 nds.each do |n| nd = WayNode.new @@ -343,5 +325,4 @@ class Way < ActiveRecord::Base cs.save! end end - end