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/way').each do |pt|
return Way.from_xml_node(pt, create)
end
- rescue
- return nil
+ rescue LibXML::XML::Error, ArgumentError => ex
+ raise OSM::APIBadXMLError.new("way", xml, ex.message)
end
end
end
way.version = pt['version']
+ raise OSM::APIBadXMLError.new("node", pt, "Changeset is required") 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
+ way.timestamp = Time.now.getutc
way.visible = true
else
if pt['timestamp']
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
+
+ user_id = changeset_cache[self.changeset_id]
- if user_display_name_cache and user_display_name_cache.key?(self.changeset.user_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
# 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
+ raise OSM::APIDuplicateTagsError.new("way", self.id, k) if @tags.include? k
@tags[k] = v
end
[ 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
- self.save!
-
- tags = self.tags
- WayTag.delete_all(['id = ?', self.id])
- tags.each do |k,v|
- tag = WayTag.new
- tag.k = k
- tag.v = v
- tag.id = self.id
- tag.save!
- end
-
- nds = self.nds
- WayNode.delete_all(['id = ?', self.id])
- sequence = 1
- nds.each do |n|
- nd = WayNode.new
- nd.id = [self.id, sequence]
- nd.node_id = n
- nd.save!
- sequence += 1
- end
-
- 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?
-
- # tell the changeset we updated one element only
- changeset.add_changes! 1
-
- 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
+ unless new_way.preconditions_ok?
+ 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
def create_with_history(user)
check_create_consistency(self, user)
- if !self.preconditions_ok?
- raise OSM::APIPreconditionFailedError.new
+ unless self.preconditions_ok?
+ raise OSM::APIPreconditionFailedError.new("Cannot create way: data is invalid.")
end
self.version = 0
self.visible = true
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'])
+ 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
- return false
+ raise OSM::APIPreconditionFailedError.new("The node with id #{n} either does not exist, or is not visible")
end
end
return true
end
def delete_with_history!(new_way, user)
- check_consistency(self, new_way, user)
- if self.visible
+ unless self.visible
+ raise OSM::APIAlreadyDeletedError.new("way", new_way.id)
+ end
+
+ # 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.
+ Way.transaction do
+ 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
+ :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
- self.save_with_history!
+ save_with_history!
end
- else
- raise OSM::APIAlreadyDeletedError
end
end
- # delete a way and its nodes that aren't part of other ways, with history
-
- # FIXME: merge the potlatch code to delete the relations
- # and refactor to use delete_with_history!
- def delete_with_relations_and_nodes_and_history(changeset_id)
- # delete the nodes not used by other ways
- self.unshared_node_ids.each do |node_id|
- n = Node.find(node_id)
- n.changeset_id = changeset_id
- n.visible = false
- n.save_with_history!
- end
-
- self.changeset_id = changeset_id
- self.tags = []
- self.nds = []
- self.visible = false
- self.save_with_history!
- end
-
# Find nodes that belong to this way only
def unshared_node_ids
node_ids = self.nodes.collect { |node| node.id }
end
end
+ private
+
+ def save_with_history!
+ t = Time.now.getutc
+
+ # update the bounding box, note that this has to be done both before
+ # and after the save, so that nodes from both versions are included in the
+ # bbox. we use a copy of the changeset so that it isn't reloaded
+ # later in the save.
+ cs = self.changeset
+ cs.update_bbox!(bbox) unless nodes.empty?
+
+ Way.transaction do
+ self.version += 1
+ self.timestamp = t
+ self.save!
+
+ tags = self.tags
+ WayTag.delete_all(['id = ?', self.id])
+ tags.each do |k,v|
+ tag = WayTag.new
+ tag.k = k
+ tag.v = v
+ tag.id = self.id
+ tag.save!
+ end
+
+ nds = self.nds
+ WayNode.delete_all(['id = ?', self.id])
+ sequence = 1
+ nds.each do |n|
+ nd = WayNode.new
+ nd.id = [self.id, sequence]
+ nd.node_id = n
+ nd.save!
+ sequence += 1
+ end
+
+ old_way = OldWay.from_way(self)
+ old_way.timestamp = t
+ old_way.save_with_dependencies!
+
+ # reload the way so that the nodes array points to the correct
+ # new set of nodes.
+ self.reload
+
+ # update and commit the bounding box, now that way nodes
+ # have been updated and we're in a transaction.
+ cs.update_bbox!(bbox) unless nodes.empty?
+
+ # tell the changeset we updated one element only
+ cs.add_changes! 1
+
+ cs.save!
+ end
+ end
+
end
projects / rails.git / blobdiff