X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/3d0ca940d26bdc23aa791178b01b816185c5a086..e2f1d6017d3e7c243f3e2cdd84e9dbf8378c22b9:/app/models/relation.rb diff --git a/app/models/relation.rb b/app/models/relation.rb index 1553414e6..ce19f7b98 100644 --- a/app/models/relation.rb +++ b/app/models/relation.rb @@ -2,15 +2,16 @@ class Relation < ActiveRecord::Base require 'xml/libxml' include ConsistencyValidations - - set_table_name 'current_relations' + include NotRedactable + + self.table_name = "current_relations" belongs_to :changeset - has_many :old_relations, :foreign_key => 'id', :order => 'version' + has_many :old_relations, :order => 'version' - has_many :relation_members, :foreign_key => 'id', :order => 'sequence_id' - has_many :relation_tags, :foreign_key => 'id' + has_many :relation_members, :order => 'sequence_id' + has_many :relation_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 @@ -23,6 +24,12 @@ class Relation < ActiveRecord::Base validates_numericality_of :changeset_id, :version, :integer_only => true validates_associated :changeset + scope :visible, where(:visible => true) + scope :invisible, where(:visible => false) + scope :nodes, lambda { |*ids| joins(:relation_members).where(:current_relation_members => { :member_type => "Node", :member_id => ids }) } + scope :ways, lambda { |*ids| joins(:relation_members).where(:current_relation_members => { :member_type => "Way", :member_id => ids }) } + scope :relations, lambda { |*ids| joins(:relation_members).where(:current_relation_members => { :member_type => "Relation", :member_id => ids }) } + TYPES = ["node", "way", "relation"] def self.from_xml(xml, create=false) @@ -33,6 +40,7 @@ class Relation < ActiveRecord::Base doc.find('//osm/relation').each do |pt| return Relation.from_xml_node(pt, create) end + raise OSM::APIBadXMLError.new("node", xml, "XML doesn't contain an osm/relation element.") rescue LibXML::XML::Error, ArgumentError => ex raise OSM::APIBadXMLError.new("relation", xml, ex.message) end @@ -41,30 +49,40 @@ class Relation < ActiveRecord::Base def self.from_xml_node(pt, create=false) relation = Relation.new - if !create and pt['id'] != '0' + raise OSM::APIBadXMLError.new("relation", pt, "Version is required when updating") unless create or not pt['version'].nil? + relation.version = pt['version'] + raise OSM::APIBadXMLError.new("relation", pt, "Changeset id is missing") if pt['changeset'].nil? + relation.changeset_id = pt['changeset'] + + unless create + raise OSM::APIBadXMLError.new("relation", pt, "ID is required when updating") if pt['id'].nil? relation.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 relation cannot be zero when updating.") if relation.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. + relation.visible = true - raise OSM::APIBadXMLError.new("relation", pt, "You are missing the required changeset in the relation") if pt['changeset'].nil? - relation.changeset_id = pt['changeset'] - - # The follow block does not need to be executed because they are dealt with - # in create_with_history, update_from and delete_with_history - if create - relation.timestamp = Time.now.getutc - relation.visible = true - relation.version = 0 - else - if pt['timestamp'] - relation.timestamp = Time.parse(pt['timestamp']) - end - relation.version = pt['version'] - end + # Start with no tags + relation.tags = Hash.new + # Add in any tags from the XML pt.find('tag').each do |tag| + raise OSM::APIBadXMLError.new("relation", pt, "tag is missing key") if tag['k'].nil? + raise OSM::APIBadXMLError.new("relation", pt, "tag is missing value") if tag['v'].nil? relation.add_tag_keyval(tag['k'], tag['v']) end + # need to initialise the relation members array explicitly, as if this + # isn't done for a new relation then @members attribute will be nil, + # and the members will be loaded from the database instead of being + # empty, as intended. + relation.members = Array.new + pt.find('member').each do |member| #member_type = logger.debug "each member" @@ -147,36 +165,6 @@ class Relation < ActiveRecord::Base return el1 end - def self.find_for_nodes(ids, options = {}) - if ids.empty? - return [] - else - self.with_scope(:find => { :joins => "INNER JOIN current_relation_members AS crm ON crm.id = current_relations.id", :conditions => "crm.member_type = 'Node' AND crm.member_id IN (#{ids.join(',')})" }) do - return self.find(:all, options) - end - end - end - - def self.find_for_ways(ids, options = {}) - if ids.empty? - return [] - else - self.with_scope(:find => { :joins => "INNER JOIN current_relation_members AS crm ON crm.id = current_relations.id", :conditions => "crm.member_type = 'Way' AND crm.member_id IN (#{ids.join(',')})" }) do - return self.find(:all, options) - end - end - end - - def self.find_for_relations(ids, options = {}) - if ids.empty? - return [] - else - self.with_scope(:find => { :joins => "INNER JOIN current_relation_members AS crm ON crm.id = current_relations.id", :conditions => "crm.member_type = 'Relation' AND crm.member_id IN (#{ids.join(',')})" }) do - return self.find(:all, options) - end - end - end - # FIXME is this really needed? def members unless @members @@ -208,7 +196,7 @@ class Relation < ActiveRecord::Base def add_member(type,id,role) @members = Array.new unless @members - @members += [[type,id,role]] + @members += [[type,id.to_i,role]] end def add_tag_keyval(k, v) @@ -240,10 +228,10 @@ class Relation < ActiveRecord::Base # provide repeatable reads for the used-by checks. this means it # shouldn't be possible to get race conditions. Relation.transaction do + self.lock! check_consistency(self, new_relation, user) # This will check to see if this relation is used by another relation - rel = RelationMember.find(:first, :joins => :relation, - :conditions => [ "visible = ? AND member_type='Relation' and member_id=? ", true, self.id ]) + rel = RelationMember.joins(:relation).where("visible = ? AND member_type = 'Relation' and member_id = ? ", true, self.id).first raise OSM::APIPreconditionFailedError.new("The relation #{new_relation.id} is used in relation #{rel.relation.id}.") unless rel.nil? self.changeset_id = new_relation.changeset_id @@ -255,16 +243,19 @@ class Relation < ActiveRecord::Base end def update_from(new_relation, user) - check_consistency(self, new_relation, user) - unless new_relation.preconditions_ok?(self.members) - raise OSM::APIPreconditionFailedError.new("Cannot update relation #{self.id}: data or member data is invalid.") + Relation.transaction do + self.lock! + check_consistency(self, new_relation, user) + unless new_relation.preconditions_ok?(self.members) + raise OSM::APIPreconditionFailedError.new("Cannot update relation #{self.id}: data or member data is invalid.") + end + self.changeset_id = new_relation.changeset_id + self.changeset = new_relation.changeset + self.tags = new_relation.tags + self.members = new_relation.members + self.visible = true + save_with_history! end - self.changeset_id = new_relation.changeset_id - self.changeset = new_relation.changeset - self.tags = new_relation.tags - self.members = new_relation.members - self.visible = true - save_with_history! end def create_with_history(user) @@ -298,7 +289,7 @@ class Relation < ActiveRecord::Base # use reflection to look up the appropriate class model = Kernel.const_get(m[0].capitalize) # get the element with that ID - element = model.find(:first, :conditions =>["id = ?", m[1]]) + element = model.where(:id => m[1]).first # and check that it is OK to use. unless element and element.visible? and element.preconditions_ok? @@ -368,12 +359,12 @@ class Relation < ActiveRecord::Base # if there are left-over tags then they are new and will have to # be added. tags_changed |= (not tags.empty?) - RelationTag.delete_all(:id => self.id) + RelationTag.delete_all(:relation_id => self.id) self.tags.each do |k,v| tag = RelationTag.new + tag.relation_id = self.id tag.k = k tag.v = v - tag.id = self.id tag.save! end @@ -381,30 +372,28 @@ class Relation < ActiveRecord::Base # changed members in an array, as the bounding box updates for # elements are per-element, not blanked on/off like for tags. changed_members = Array.new - members = Hash.new - self.members.each do |m| - # should be: h[[m.id, m.type]] = m.role, but someone prefers arrays - members[[m[1], m[0]]] = m[2] - end - relation_members.each do |old_member| - key = [old_member.member_id.to_s, old_member.member_type] - if members.has_key? key - members.delete key - else + members = self.members.clone + self.relation_members.each do |old_member| + key = [old_member.member_type, old_member.member_id, old_member.member_role] + i = members.index key + if i.nil? changed_members << key + else + members.delete_at i end end # any remaining members must be new additions - changed_members += members.keys + changed_members += members # update the members. first delete all the old members, as the new # members may be in a different order and i don't feel like implementing # a longest common subsequence algorithm to optimise this. members = self.members - RelationMember.delete_all(:id => self.id) + RelationMember.delete_all(:relation_id => self.id) members.each_with_index do |m,i| mem = RelationMember.new - mem.id = [self.id, i] + mem.relation_id = self.id + mem.sequence_id = i mem.member_type = m[0] mem.member_id = m[1] mem.member_role = m[2] @@ -429,21 +418,17 @@ class Relation < ActiveRecord::Base changed_members.collect { |id,type| type == "relation" }. inject(false) { |b,s| b or s } - if tags_changed or any_relations - # add all non-relation bounding boxes to the changeset - # FIXME: check for tag changes along with element deletions and - # make sure that the deleted element's bounding box is hit. - self.members.each do |type, id, role| - if type != "Relation" - update_changeset_element(type, id) - end - end - else - # add only changed members to the changeset - changed_members.each do |id, type| - if type != "Relation" - update_changeset_element(type, id) - end + update_members = if tags_changed or any_relations + # add all non-relation bounding boxes to the changeset + # FIXME: check for tag changes along with element deletions and + # make sure that the deleted element's bounding box is hit. + self.members + else + changed_members + end + update_members.each do |type, id, role| + if type != "Relation" + update_changeset_element(type, id) end end