# 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
- return nil
+ 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
+ raise OSM::APIBadXMLError.new("node", pt, "changeset id missing") if pt['changeset'].nil?
node.changeset_id = pt['changeset'].to_i
- return nil unless node.in_world?
+ raise OSM::APIBadUserInput.new("The node is outside this world") unless node.in_world?
# version must be present unless creating
- return nil unless create or not pt['version'].nil?
+ raise OSM::APIBadXMLError.new("node", pt, "Version is required when updating") unless create or not pt['version'].nil?
node.version = create ? 0 : pt['version'].to_i
unless create
# visible if it says it is, or as the default if the attribute
# is missing.
- node.visible = pt['visible'].nil? or pt['visible'] == 'true'
+ # Don't need to set the visibility, when it is set explicitly in the create/update/delete
+ #node.visible = pt['visible'].nil? or pt['visible'] == 'true'
- if create
- node.timestamp = Time.now
- else
- if pt['timestamp']
- node.timestamp = Time.parse(pt['timestamp'])
- end
- end
+ # We don't care about the time, as it is explicitly set on create/update/delete
tags = []
end
##
- # the bounding box around a node
+ # the bounding box around a node, which is used for determining the changeset's
+ # bounding box
def bbox
[ longitude, latitude, longitude, latitude ]
end
- def save_with_history!
- t = Time.now
- Node.transaction do
- self.version += 1
- self.timestamp = t
- self.save!
-
- # Create a NodeTag
- tags = self.tags
- NodeTag.delete_all(['id = ?', self.id])
- tags.each do |k,v|
- tag = NodeTag.new
- tag.k = k
- tag.v = v
- tag.id = self.id
- tag.save!
- end
-
- # Create an OldNode
- old_node = OldNode.from_node(self)
- old_node.timestamp = t
- old_node.save_with_dependencies!
-
- # tell the changeset we updated one element only
- changeset.add_changes! 1
-
- # save the changeset in case of bounding box updates
- changeset.save!
- end
- end
-
# Should probably be renamed delete_from to come in line with update
def delete_with_history!(new_node, user)
- if self.visible
+ unless self.visible
+ raise OSM::APIAlreadyDeletedError.new
+ 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.
+ Node.transaction do
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
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
- else
- raise OSM::APIAlreadyDeletedError.new
end
end
def update_from(new_node, user)
check_consistency(self, new_node, user)
- # update changeset with *old* position first
+ # update changeset first
+ self.changeset_id = new_node.changeset_id
+ self.changeset = new_node.changeset
+
+ # update changeset bbox with *old* position first
changeset.update_bbox!(bbox);
# 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 with *new* position
+ # update changeset bbox with *new* position
changeset.update_bbox!(bbox);
save_with_history!
# 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("node", self.id, k) if @tags.include? k
@tags[k] = v
end
def fix_placeholders!(id_map)
# nodes don't refer to anything, so there is nothing to do here
end
+
+ private
+ def save_with_history!
+ t = Time.now.getutc
+ Node.transaction do
+ self.version += 1
+ self.timestamp = t
+ self.save!
+
+ # Create a NodeTag
+ tags = self.tags
+ NodeTag.delete_all(['id = ?', self.id])
+ tags.each do |k,v|
+ tag = NodeTag.new
+ tag.k = k
+ tag.v = v
+ tag.id = self.id
+ tag.save!
+ end
+
+ # Create an OldNode
+ old_node = OldNode.from_node(self)
+ old_node.timestamp = t
+ old_node.save_with_dependencies!
+
+ # tell the changeset we updated one element only
+ changeset.add_changes! 1
+
+ # save the changeset in case of bounding box updates
+ changeset.save!
+ end
+ end
+
end
projects / rails.git / blobdiff