-class Changeset < ActiveRecord::Base
+# == Schema Information
+#
+# Table name: changesets
+#
+# id :bigint(8) not null, primary key
+# user_id :bigint(8) not null
+# created_at :datetime not null
+# min_lat :integer
+# max_lat :integer
+# min_lon :integer
+# max_lon :integer
+# closed_at :datetime not null
+# num_changes :integer default(0), not null
+#
+# Indexes
+#
+# changesets_bbox_idx (min_lat,max_lat,min_lon,max_lon) USING gist
+# changesets_closed_at_idx (closed_at)
+# changesets_created_at_idx (created_at)
+# changesets_user_id_created_at_idx (user_id,created_at)
+# changesets_user_id_id_idx (user_id,id)
+# index_changesets_on_user_id_and_closed_at (user_id,closed_at)
+#
+# Foreign Keys
+#
+# changesets_user_id_fkey (user_id => users.id)
+#
+
+class Changeset < ApplicationRecord
require "xml/libxml"
belongs_to :user, :counter_cache => true
has_many :comments, -> { where(:visible => true).order(:created_at) }, :class_name => "ChangesetComment"
has_and_belongs_to_many :subscribers, :class_name => "User", :join_table => "changesets_subscribers", :association_foreign_key => "subscriber_id"
- validates_presence_of :id, :on => :update
- validates_presence_of :user_id, :created_at, :closed_at, :num_changes
- validates_uniqueness_of :id
- validates_numericality_of :id, :on => :update, :integer_only => true
- 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 :id, :uniqueness => true, :presence => { :on => :update },
+ :numericality => { :on => :update, :only_integer => true }
+ validates :num_changes, :presence => true,
+ :numericality => { :only_integer => true,
+ :greater_than_or_equal_to => 0 }
+ validates :created_at, :closed_at, :presence => true
+ validates :min_lat, :max_lat, :min_lon, :max_lat, :allow_nil => true,
+ :numericality => { :only_integer => true }
before_save :update_closed_at
- # over-expansion factor to use when updating the bounding box
- EXPAND = 0.1
-
# maximum number of elements allowed in a changeset
- MAX_ELEMENTS = 50000
+ MAX_ELEMENTS = 10000
# maximum time a changeset is allowed to be open for.
MAX_TIME_OPEN = 1.day
# Use a method like this, so that we can easily change how we
# determine whether a changeset is open, without breaking code in at
# least 6 controllers
- def is_open?
+ def 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
# longer than strictly allowed or have slightly more changes in them.
- ((closed_at > Time.now.getutc) && (num_changes <= MAX_ELEMENTS))
+ (closed_at > Time.now.utc) && (num_changes <= MAX_ELEMENTS)
end
def set_closed_time_now
- self.closed_at = Time.now.getutc if is_open?
+ self.closed_at = Time.now.utc if open?
end
- def self.from_xml(xml, create = false)
+ def self.from_xml(xml, create: false)
p = XML::Parser.string(xml, :options => XML::Parser::Options::NOERROR)
doc = p.parse
+ pt = doc.find_first("//osm/changeset")
- doc.find("//osm/changeset").each do |pt|
- return Changeset.from_xml_node(pt, create)
+ if pt
+ Changeset.from_xml_node(pt, :create => create)
+ else
+ raise OSM::APIBadXMLError.new("changeset", xml, "XML doesn't contain an osm/changeset element.")
end
- fail OSM::APIBadXMLError.new("changeset", xml, "XML doesn't contain an osm/changeset element.")
- rescue LibXML::XML::Error, ArgumentError => ex
- raise OSM::APIBadXMLError.new("changeset", xml, ex.message)
+ rescue LibXML::XML::Error, ArgumentError => e
+ raise OSM::APIBadXMLError.new("changeset", xml, e.message)
end
- def self.from_xml_node(pt, create = false)
+ def self.from_xml_node(pt, create: false)
cs = Changeset.new
if create
- cs.created_at = Time.now.getutc
+ cs.created_at = Time.now.utc
# initial close time is 1h ahead, but will be increased on each
# modification.
cs.closed_at = cs.created_at + IDLE_TIMEOUT
end
pt.find("tag").each do |tag|
- fail OSM::APIBadXMLError.new("changeset", pt, "tag is missing key") if tag["k"].nil?
- fail OSM::APIBadXMLError.new("changeset", pt, "tag is missing value") if tag["v"].nil?
+ raise OSM::APIBadXMLError.new("changeset", pt, "tag is missing key") if tag["k"].nil?
+ raise OSM::APIBadXMLError.new("changeset", pt, "tag is missing value") if tag["v"].nil?
+
cs.add_tag_keyval(tag["k"], tag["v"])
end
@bbox ||= BoundingBox.new(min_lon, min_lat, max_lon, max_lat)
end
- def has_valid_bbox?
+ def bbox_valid?
bbox.complete?
end
##
- # 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
- # suggested on the wiki page by kleptog.
+ # expand the bounding box to include the given bounding box.
def update_bbox!(bbox_update)
- bbox.expand!(bbox_update, EXPAND)
+ bbox.expand!(bbox_update)
# 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.to_a if bbox.complete?
+ self.min_lon, self.min_lat, self.max_lon, self.max_lat = @bbox.to_a.collect(&:round) if bbox.complete?
end
##
# the number of elements is also passed in so that we can ensure that
- # a single changeset doesn't contain too many elements. this, of course,
- # destroys the optimisation described in the bbox method above.
+ # a single changeset doesn't contain too many elements.
def add_changes!(elements)
self.num_changes += elements
end
- def tags_as_hash
- tags
- end
-
def tags
unless @tags
@tags = {}
attr_writer :tags
def add_tag_keyval(k, v)
- @tags = {} unless @tags
+ @tags ||= {}
# duplicate tags are now forbidden, so we can't allow values
# in the hash to be overwritten.
- fail OSM::APIDuplicateTagsError.new("changeset", id, k) if @tags.include? k
+ raise OSM::APIDuplicateTagsError.new("changeset", id, k) if @tags.include? k
@tags[k] = v
end
# do the changeset update and the changeset tags update in the
# same transaction to ensure consistency.
Changeset.transaction do
- self.save!
+ save!
tags = self.tags
- ChangesetTag.delete_all(:changeset_id => id)
+ ChangesetTag.where(:changeset => id).delete_all
tags.each do |k, v|
tag = ChangesetTag.new
# that would make it more than 24h long, in which case clip to
# 24h, as this has been decided is a reasonable time limit.
def update_closed_at
- if self.is_open?
- if (closed_at - created_at) > (MAX_TIME_OPEN - IDLE_TIMEOUT)
- self.closed_at = created_at + MAX_TIME_OPEN
- else
- self.closed_at = Time.now.getutc + IDLE_TIMEOUT
- end
- end
- end
-
- def to_xml(include_discussion = false)
- doc = OSM::API.new.get_xml_doc
- doc.root << to_xml_node(nil, include_discussion)
- doc
- end
-
- def to_xml_node(user_display_name_cache = nil, include_discussion = false)
- el1 = XML::Node.new "changeset"
- el1["id"] = id.to_s
-
- user_display_name_cache = {} if user_display_name_cache.nil?
-
- if user_display_name_cache && user_display_name_cache.key?(user_id)
- # use the cache if available
- elsif user.data_public?
- user_display_name_cache[user_id] = user.display_name
- else
- user_display_name_cache[user_id] = nil
- end
-
- el1["user"] = user_display_name_cache[user_id] unless user_display_name_cache[user_id].nil?
- el1["uid"] = user_id.to_s if user.data_public?
-
- tags.each do |k, v|
- el2 = XML::Node.new("tag")
- el2["k"] = k.to_s
- el2["v"] = v.to_s
- el1 << el2
+ if open?
+ self.closed_at = if (closed_at - created_at) > (MAX_TIME_OPEN - IDLE_TIMEOUT)
+ created_at + MAX_TIME_OPEN
+ else
+ Time.now.utc + IDLE_TIMEOUT
+ end
end
-
- el1["created_at"] = created_at.xmlschema
- el1["closed_at"] = closed_at.xmlschema unless is_open?
- el1["open"] = is_open?.to_s
-
- bbox.to_unscaled.add_bounds_to(el1, "_") if bbox.complete?
-
- el1["comments_count"] = comments.count.to_s
-
- if include_discussion
- el2 = XML::Node.new("discussion")
- comments.includes(:author).each do |comment|
- el3 = XML::Node.new("comment")
- el3["date"] = comment.created_at.xmlschema
- el3["uid"] = comment.author.id.to_s if comment.author.data_public?
- el3["user"] = comment.author.display_name.to_s if comment.author.data_public?
- el4 = XML::Node.new("text")
- el4.content = comment.body.to_s
- el3 << el4
- el2 << el3
- end
- el1 << el2
- end
-
- # 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.
-
- el1
end
##
# 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.
- fail OSM::APIUserChangesetMismatchError.new unless user.id == user_id
+ raise OSM::APIUserChangesetMismatchError unless user.id == user_id
# can't change a closed changeset
- fail OSM::APIChangesetAlreadyClosedError.new(self) unless is_open?
+ raise OSM::APIChangesetAlreadyClosedError, self unless open?
# copy the other's tags
self.tags = other.tags
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