# Uses the streaming LibXML "Reader" interface to cut down on memory
# usage, so hopefully we can process fairly large diffs.
class DiffReader
- include ConsistencyValidations
-
# maps each element type to the model class which handles it
MODELS = {
"node" => Node,
model = MODELS[model_name]
if model.nil?
raise OSM::APIBadUserInput, "Unexpected element type #{model_name}, " \
- "expected node, way or relation."
+ "expected node, way or relation."
end
# new in libxml-ruby >= 2, expand returns an element not associated
# with a document. this means that there's no encoding parameter,
@reader.read
raise OSM::APIBadUserInput, "Document element should be 'osmChange'." if @reader.name != "osmChange"
- result = OSM::API.new.get_xml_doc
+ result = OSM::API.new.xml_doc
result.root.name = "diffResult"
# loop at the top level, within the <osmChange> element
# create a new element. this code is agnostic of the element type
# because all the elements support the methods that we're using.
with_model do |model, xml|
- new = model.from_xml_node(xml, true)
+ new = model.from_xml_node(xml, :create => true)
check(model, xml, new)
# when this element is saved it will get a new ID, so we save it
# with types, but uses duck typing to handle them transparently.
with_model do |model, xml|
# get the new element from the XML payload
- new = model.from_xml_node(xml, false)
+ new = model.from_xml_node(xml, :create => false)
check(model, xml, new)
# if the ID is a placeholder then map it to the real ID