-module ConsistencyValidations
- # Generic checks that are run for the updates and deletes of
- # node, ways and relations. This code is here to avoid duplication,
- # and allow the extention of the checks without having to modify the
- # code in 6 places for all the updates and deletes. Some of these tests are
- # needed for creates, but are currently not run :-(
- # This will throw an exception if there is an inconsistency
- def check_consistency(old, new, user)
- if new.id != old.id || new.id.nil? || old.id.nil?
- raise OSM::APIPreconditionFailedError.new("New and old IDs don't match on #{new.class}. #{new.id} != #{old.id}.")
- elsif new.version != old.version
- raise OSM::APIVersionMismatchError.new(new.id, new.class.to_s, new.version, old.version)
- elsif new.changeset.nil?
- raise OSM::APIChangesetMissingError.new
- elsif new.changeset.user_id != user.id
- raise OSM::APIUserChangesetMismatchError.new
- elsif !new.changeset.is_open?
- raise OSM::APIChangesetAlreadyClosedError.new(new.changeset)
- end
- end
-
- # This is similar to above, just some validations don't apply
- def check_create_consistency(new, user)
- if new.changeset.nil?
- raise OSM::APIChangesetMissingError.new
- elsif new.changeset.user_id != user.id
- raise OSM::APIUserChangesetMismatchError.new
- elsif !new.changeset.is_open?
- raise OSM::APIChangesetAlreadyClosedError.new(new.changeset)
- end
- end
-
- ##
- # subset of consistency checks which should be applied to almost
- # all the changeset controller's writable methods.
- def check_changeset_consistency(changeset, user)
- # check user credentials - only the user who opened a changeset
- # may alter it.
- if changeset.nil?
- raise OSM::APIChangesetMissingError.new
- elsif user.id != changeset.user_id
- raise OSM::APIUserChangesetMismatchError.new
- elsif !changeset.is_open?
- raise OSM::APIChangesetAlreadyClosedError.new(changeset)
- end
- end
-end