def save_with_history!
Relation.transaction do
+ # have to be a little bit clever here - to detect if any tags
+ # changed then we have to monitor their before and after state.
+ tags_changed = false
+
t = Time.now
self.version += 1
self.timestamp = t
self.save!
tags = self.tags
- RelationTag.delete_all(['id = ?', self.id])
+ self.relation_tags.each do |old_tag|
+ key = old_tag.k
+ # if we can match the tags we currently have to the list
+ # of old tags, then we never set the tags_changed flag. but
+ # if any are different then set the flag and do the DB
+ # update.
+ if tags.has_key? key
+ # rails 2.1 dirty handling should take care of making this
+ # somewhat efficient... hopefully...
+ old_tag.v = tags[key]
+ tags_changed |= old_tag.changed?
+ old_tag.save!
+
+ # remove from the map, so that we can expect an empty map
+ # at the end if there are no new tags
+ tags.delete key
+
+ else
+ # this means a tag was deleted
+ tags_changed = true
+ RelationTag.delete_all ['id = ? and k = ?', self.id, old_tag.k]
+ end
+ end
+ # if there are left-over tags then they are new and will have to
+ # be added.
+ tags_changed |= (not tags.empty?)
tags.each do |k,v|
tag = RelationTag.new
tag.k = k
tag.save!
end
- members = self.members
- RelationMember.delete_all(['id = ?', self.id])
- members.each do |n|
+ # same pattern as before, but this time we're collecting the
+ # changed members in an array, as the bounding box updates for
+ # elements are per-element, not blanked on/off like for tags.
+ changed_members = Array.new
+ members = self.members_as_hash
+ relation_members.each do |old_member|
+ key = [old_member.member_id.to_s, old_member.member_type]
+ if members.has_key? key
+ # i'd love to rely on rails' dirty handling here, but the
+ # relation members are always dirty because of the member_class
+ # handling.
+ if members[key] != old_member.member_role
+ old_member.member_role = members[key]
+ changed_members << key
+ old_member.save!
+ end
+ members.delete key
+
+ else
+ changed_members << key
+ RelationMember.delete_all ['id = ? and member_id = ? and member_type = ?', self.id, old_member.member_id, old_member.member_type]
+ end
+ end
+ # any remaining members must be new additions
+ changed_members += members.keys
+ members.each do |k,v|
mem = RelationMember.new
mem.id = self.id
- mem.member_type = n[0];
- mem.member_id = n[1];
- mem.member_role = n[2];
+ mem.member_type = k[1];
+ mem.member_id = k[0];
+ mem.member_role = v;
mem.save!
end
old_relation.save_with_dependencies!
# update the bbox of the changeset and save it too.
- # FIXME: what is the bounding box of a relation?
+ # discussion on the mailing list gave the following definition for
+ # the bounding box update procedure of a relation:
+ #
+ # adding or removing nodes or ways from a relation causes them to be
+ # added to the changeset bounding box. adding a relation member or
+ # changing tag values causes all node and way members to be added to the
+ # bounding box. this is similar to how the map call does things and is
+ # reasonable on the assumption that adding or removing members doesn't
+ # materially change the rest of the relation.
+ any_relations =
+ changed_members.collect { |id,type| type == "relation" }.
+ inject(false) { |b,s| b or s }
+
+ if tags_changed or any_relations
+ # add all non-relation bounding boxes to the changeset
+ # FIXME: check for tag changes along with element deletions and
+ # make sure that the deleted element's bounding box is hit.
+ self.members.each do |type, id, role|
+ if type != "relation"
+ update_changeset_element(type, id)
+ end
+ end
+ else
+ # add only changed members to the changeset
+ changed_members.each do |id, type|
+ update_changeset_element(type, id)
+ end
+ end
+
+ # save the (maybe updated) changeset bounding box
+ changeset.save!
end
end
+ ##
+ # updates the changeset bounding box to contain the bounding box of
+ # the element with given +type+ and +id+. this only works with nodes
+ # and ways at the moment, as they're the only elements to respond to
+ # the :bbox call.
+ def update_changeset_element(type, id)
+ element = Kernel.const_get(type.capitalize).find(id)
+ changeset.update_bbox! element.bbox
+ end
+
def delete_with_history!(new_relation, user)
if self.visible
check_consistency(self, new_relation, user)
raise OSM::APIPreconditionFailedError.new
else
self.changeset_id = new_relation.changeset_id
- self.tags = []
+ self.tags = {}
self.members = []
self.visible = false
save_with_history!
return false
end
+ ##
+ # members in a hash table [id,type] => role
+ def members_as_hash
+ h = Hash.new
+ members.each do |m|
+ # should be: h[[m.id, m.type]] = m.role, but someone prefers arrays
+ h[[m[1], m[0]]] = m[2]
+ end
+ return h
+ end
+
# Temporary method to match interface to nodes
def tags_as_hash
return self.tags
assert_response :not_found
end
+ ##
+ # when a relation's tag is modified then it should put the bounding
+ # box of all its members into the changeset.
+ def test_tag_modify_bounding_box
+ # in current fixtures, relation 5 contains nodes 3 and 5 (node 3
+ # indirectly via way 3), so the bbox should be [3,3,5,5].
+ check_changeset_modify([3,3,5,5]) do |changeset_id|
+ # add a tag to an existing relation
+ relation_xml = current_relations(:visible_relation).to_xml
+ relation_element = relation_xml.find("//osm/relation").first
+ new_tag = XML::Node.new("tag")
+ new_tag['k'] = "some_new_tag"
+ new_tag['v'] = "some_new_value"
+ relation_element << new_tag
+
+ # update changeset ID to point to new changeset
+ update_changeset(relation_xml, changeset_id)
+
+ # upload the change
+ content relation_xml
+ put :update, :id => current_relations(:visible_relation).id
+ assert_response :success, "can't update relation for tag/bbox test"
+ end
+ end
+
+ ##
+ # add a member to a relation and check the bounding box is only that
+ # element.
+ def test_add_member_bounding_box
+ check_changeset_modify([4,4,4,4]) do |changeset_id|
+ # add node 4 (4,4) to an existing relation
+ relation_xml = current_relations(:visible_relation).to_xml
+ relation_element = relation_xml.find("//osm/relation").first
+ new_member = XML::Node.new("member")
+ new_member['ref'] = current_nodes(:used_node_2).id.to_s
+ new_member['type'] = "node"
+ new_member['role'] = "some_role"
+ relation_element << new_member
+
+ # update changeset ID to point to new changeset
+ update_changeset(relation_xml, changeset_id)
+
+ # upload the change
+ content relation_xml
+ put :update, :id => current_relations(:visible_relation).id
+ assert_response :success, "can't update relation for add node/bbox test"
+ end
+ end
+
+ ##
+ # remove a member from a relation and check the bounding box is
+ # only that element.
+ def test_remove_member_bounding_box
+ check_changeset_modify([5,5,5,5]) do |changeset_id|
+ # remove node 5 (5,5) from an existing relation
+ relation_xml = current_relations(:visible_relation).to_xml
+ relation_xml.
+ find("//osm/relation/member[@type='node'][@ref='5']").
+ first.remove!
+
+ # update changeset ID to point to new changeset
+ update_changeset(relation_xml, changeset_id)
+
+ # upload the change
+ content relation_xml
+ put :update, :id => current_relations(:visible_relation).id
+ assert_response :success, "can't update relation for remove node/bbox test"
+ end
+ end
+
+ ##
+ # create a changeset and yield to the caller to set it up, then assert
+ # that the changeset bounding box is +bbox+.
+ def check_changeset_modify(bbox)
+ basic_authorization("test@openstreetmap.org", "test");
+
+ # create a new changeset for this operation, so we are assured
+ # that the bounding box will be newly-generated.
+ changeset_id = with_controller(ChangesetController.new) do
+ content "<osm><changeset/></osm>"
+ put :create
+ assert_response :success, "couldn't create changeset for modify test"
+ @response.body.to_i
+ end
+
+ # go back to the block to do the actual modifies
+ yield changeset_id
+
+ # now download the changeset to check its bounding box
+ with_controller(ChangesetController.new) do
+ get :read, :id => changeset_id
+ assert_response :success, "can't re-read changeset for modify test"
+ assert_select "osm>changeset", 1
+ assert_select "osm>changeset[id=#{changeset_id}]", 1
+ assert_select "osm>changeset[min_lon=#{bbox[0]}]", 1
+ assert_select "osm>changeset[min_lat=#{bbox[1]}]", 1
+ assert_select "osm>changeset[max_lon=#{bbox[2]}]", 1
+ assert_select "osm>changeset[max_lat=#{bbox[3]}]", 1
+ end
+ end
+
##
# update the changeset_id of a node element
def update_changeset(xml, changeset_id)
projects / rails.git / commitdiff