belongs_to :user
has_many :changeset_tags, :foreign_key => 'id'
-
+
has_many :nodes
has_many :ways
has_many :relations
has_many :old_nodes
has_many :old_ways
has_many :old_relations
-
+
validates_presence_of :id, :on => :update
validates_presence_of :user_id, :created_at, :closed_at, :num_changes
validates_uniqueness_of :id
validates_numericality_of :min_lat, :max_lat, :min_lon, :max_lat, :allow_nil => true, :integer_only => true
validates_numericality_of :user_id, :integer_only => true
validates_numericality_of :num_changes, :integer_only => true, :greater_than_or_equal_to => 0
- validates_associated :user
# over-expansion factor to use when updating the bounding box
EXPAND = 0.1
IDLE_TIMEOUT = 1.hour
# Use a method like this, so that we can easily change how we
- # determine whether a changeset is open, without breaking code in at
+ # determine whether a changeset is open, without breaking code in at
# least 6 controllers
def is_open?
# a changeset is open (that is, it will accept further changes) when
# it has not yet run out of time and its capacity is small enough.
# note that this may not be a hard limit - due to timing changes and
- # concurrency it is possible that some changesets may be slightly
+ # concurrency it is possible that some changesets may be slightly
# longer than strictly allowed or have slightly more changes in them.
return ((closed_at > Time.now.getutc) and (num_changes <= MAX_ELEMENTS))
end
self.closed_at = Time.now.getutc
end
end
-
+
def self.from_xml(xml, create=false)
begin
p = XML::Parser.string(xml)
raise OSM::APIBadXMLError.new("changeset", xml, ex.message)
end
end
-
+
def self.from_xml_node(pt, create=false)
cs = Changeset.new
if create
cs.closed_at = cs.created_at + IDLE_TIMEOUT
# initially we have no changes in a changeset
cs.num_changes = 0
- else
- raise OSM::APIBadXMLError.new("changeset", pt, "ID is required when updating.") if pt['id'].nil?
- cs.id = pt['id'].to_i
- # .to_i will return 0 if there is no number that can be parsed.
- # We want to make sure that there is no id with zero anyway.
- raise OSM::APIBadUserInput.new("ID of changeset cannot be zero when updating.") if cs.id == 0
end
pt.find('tag').each do |tag|
raise OSM::APIBadXMLError.new("changeset", pt, "tag is missing value") if tag['v'].nil?
cs.add_tag_keyval(tag['k'], tag['v'])
end
-
+
return cs
end
def bbox
@bbox ||= [ min_lon, min_lat, max_lon, max_lat ]
end
-
+
def has_valid_bbox?
not bbox.include? nil
end
-
+
##
# returns area of the changset bbox as a rough comparitive quantity for use of changset displays
def area
if has_valid_bbox?
- (max_lon - min_lon) * (max_lat - min_lat)
+ (max_lon - min_lon) * (max_lat - min_lat)
else
- 0
+ 0
end
end
##
- # expand the bounding box to include the given bounding box. also,
+ # expand the bounding box to include the given bounding box. also,
# expand a little bit more in the direction of the expansion, so that
- # further expansions may be unnecessary. this is an optimisation
+ # further expansions may be unnecessary. this is an optimisation
# suggested on the wiki page by kleptog.
def update_bbox!(array)
# ensure that bbox is cached and has no nils in it. if there are any
# nils, just use the bounding box update to write over them.
@bbox = bbox.zip(array).collect { |a, b| a.nil? ? b : a }
- # FIXME - this looks nasty and violates DRY... is there any prettier
- # way to do this?
- @bbox[0] = [-180 * GeoRecord::SCALE, array[0] + EXPAND * (@bbox[0] - @bbox[2])].max if array[0] < @bbox[0]
- @bbox[1] = [ -90 * GeoRecord::SCALE, array[1] + EXPAND * (@bbox[1] - @bbox[3])].max if array[1] < @bbox[1]
- @bbox[2] = [ 180 * GeoRecord::SCALE, array[2] + EXPAND * (@bbox[2] - @bbox[0])].min if array[2] > @bbox[2]
- @bbox[3] = [ 90 * GeoRecord::SCALE, array[3] + EXPAND * (@bbox[3] - @bbox[1])].min if array[3] > @bbox[3]
-
- # update active record. rails 2.1's dirty handling should take care of
- # whether this object needs saving or not.
- self.min_lon, self.min_lat, self.max_lon, self.max_lat = @bbox
+ # only try to update the bbox if there is a value for every coordinate
+ # which there will be from the previous line as long as both array and
+ # bbox are all non-nil.
+ if has_valid_bbox? and array.all?
+ # FIXME - this looks nasty and violates DRY... is there any prettier
+ # way to do this?
+ @bbox[0] = [-180 * GeoRecord::SCALE, array[0] + EXPAND * (@bbox[0] - @bbox[2])].max if array[0] < @bbox[0]
+ @bbox[1] = [ -90 * GeoRecord::SCALE, array[1] + EXPAND * (@bbox[1] - @bbox[3])].max if array[1] < @bbox[1]
+ @bbox[2] = [ 180 * GeoRecord::SCALE, array[2] + EXPAND * (@bbox[2] - @bbox[0])].min if array[2] > @bbox[2]
+ @bbox[3] = [ 90 * GeoRecord::SCALE, array[3] + EXPAND * (@bbox[3] - @bbox[1])].min if array[3] > @bbox[3]
+
+ # update active record. rails 2.1's dirty handling should take care of
+ # whether this object needs saving or not.
+ self.min_lon, self.min_lat, self.max_lon, self.max_lat = @bbox
+ end
end
##
end
end
end
-
+
def to_xml
doc = OSM::API.new.get_xml_doc
doc.root << to_xml_node()
return doc
end
-
+
def to_xml_node(user_display_name_cache = nil)
el1 = XML::Node.new 'changeset'
el1['id'] = self.id.to_s
el2['v'] = v.to_s
el1 << el2
end
-
+
el1['created_at'] = self.created_at.xmlschema
el1['closed_at'] = self.closed_at.xmlschema unless is_open?
el1['open'] = is_open?.to_s
el1['min_lat'] = (bbox[1].to_f / GeoRecord::SCALE).to_s unless bbox[1].nil?
el1['max_lon'] = (bbox[2].to_f / GeoRecord::SCALE).to_s unless bbox[2].nil?
el1['max_lat'] = (bbox[3].to_f / GeoRecord::SCALE).to_s unless bbox[3].nil?
-
+
# NOTE: changesets don't include the XML of the changes within them,
# they are just structures for tagging. to get the osmChange of a
# changeset, see the download method of the controller.
# bounding box, only the tags of the changeset.
def update_from(other, user)
# ensure that only the user who opened the changeset may modify it.
- unless user.id == self.user_id
+ unless user.id == self.user_id
raise OSM::APIUserChangesetMismatchError.new
end
-
+
# can't change a closed changeset
unless is_open?
raise OSM::APIChangesetAlreadyClosedError.new(self)
projects / rails.git / blobdiff