return doc
end
- def to_xml_node(visible_nodes = nil, user_display_name_cache = nil)
+ 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['version'] = self.version.to_s
el1['changeset'] = self.changeset_id.to_s
- user_display_name_cache = {} if user_display_name_cache.nil?
+ if changeset_cache.key?(self.changeset_id)
+ # use the cache if available
+ else
+ changeset_cache[self.changeset_id] = self.changeset.user_id
+ end
- if user_display_name_cache and user_display_name_cache.key?(self.changeset.user_id)
+ 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[self.changeset.user_id] = self.changeset.user.display_name
+ user_display_name_cache[user_id] = self.changeset.user.display_name
else
- user_display_name_cache[self.changeset.user_id] = nil
+ user_display_name_cache[user_id] = nil
end
- 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
+ if not user_display_name_cache[user_id].nil?
+ el1['user'] = user_display_name_cache[user_id]
+ el1['uid'] = user_id.to_s
end
# make sure nodes are output in sequence_id order
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)
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'])
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.find(:all, :conditions => { :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
# 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",
+ rel = RelationMember.find(:first, :joins => :relation,
: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
-
- self.tags = []
- self.nds = []
- self.visible = false
- save_with_history!
- end
+ raise OSM::APIPreconditionFailedError.new("Way #{self.id} still used by relation #{rel.relation.id}.") if rel
+
+ self.changeset_id = new_way.changeset_id
+ self.changeset = new_way.changeset
+
+ self.tags = []
+ self.nds = []
+ self.visible = false
+ save_with_history!
end
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
# 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)
+ def fix_placeholders!(id_map, placeholder_id = nil)
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?
+ raise OSM::APIBadUserInput.new("Placeholder node not found for reference #{node_id} in way #{self.id.nil? ? placeholder_id : self.id}") if new_id.nil?
new_id
else
node_id
projects / rails.git / blobdiff