+# == Schema Information
+#
+# Table name: relations
+#
+# relation_id :integer default(0), not null, primary key
+# changeset_id :integer not null
+# timestamp :datetime not null
+# version :integer not null, primary key
+# visible :boolean default(TRUE), not null
+# redaction_id :integer
+#
+# Indexes
+#
+# relations_changeset_id_idx (changeset_id)
+# relations_timestamp_idx (timestamp)
+#
+# Foreign Keys
+#
+# relations_changeset_id_fkey (changeset_id => changesets.id)
+# relations_redaction_id_fkey (redaction_id => redactions.id)
+#
+
class OldRelation < ActiveRecord::Base
include ConsistencyValidations
-
- set_table_name 'relations'
+ include ObjectMetadata
+
+ self.table_name = "relations"
+ self.primary_keys = "relation_id", "version"
+
+ # note this needs to be included after the table name changes, or
+ # the queries generated by Redactable will use the wrong table name.
+ include Redactable
belongs_to :changeset
-
- validates_associated :changeset
+ belongs_to :redaction
+ belongs_to :current_relation, :class_name => "Relation", :foreign_key => "relation_id"
+
+ has_many :old_members, -> { order(:sequence_id) }, :class_name => "OldRelationMember", :foreign_key => [:relation_id, :version]
+ has_many :old_tags, :class_name => "OldRelationTag", :foreign_key => [:relation_id, :version]
+
+ validates :changeset, :presence => true, :associated => true
+ validates :timestamp, :presence => true
+ validates :visible, :inclusion => [true, false]
def self.from_relation(relation)
old_relation = OldRelation.new
old_relation.visible = relation.visible
old_relation.changeset_id = relation.changeset_id
old_relation.timestamp = relation.timestamp
- old_relation.id = relation.id
+ old_relation.relation_id = relation.id
old_relation.version = relation.version
old_relation.members = relation.members
old_relation.tags = relation.tags
- return old_relation
+ old_relation
end
def save_with_dependencies!
-
- # see comment in old_way.rb ;-)
save!
- clear_aggregation_cache
- clear_association_cache
- @attributes.update(OldRelation.where('id = ? AND timestamp = ?', self.id, self.timestamp).order("version DESC").first.instance_variable_get('@attributes'))
- # ok, you can touch from here on
-
- self.tags.each do |k,v|
+ tags.each do |k, v|
tag = OldRelationTag.new
tag.k = k
tag.v = v
- tag.id = self.id
- tag.version = self.version
+ tag.relation_id = relation_id
+ tag.version = version
tag.save!
end
- self.members.each_with_index do |m,i|
+ members.each_with_index do |m, i|
member = OldRelationMember.new
- member.id = [self.id, self.version, i]
+ member.id = [relation_id, version, i]
member.member_type = m[0].classify
member.member_id = m[1]
member.member_role = m[2]
end
def members
- unless @members
- @members = Array.new
- OldRelationMember.where("id = ? AND version = ?", self.id, self.version).order(:sequence_id).each do |m|
- @members += [[m.type,m.id,m.role]]
- end
+ @members ||= old_members.collect do |member|
+ [member.member_type, member.member_id, member.member_role]
end
- @members
end
def tags
- unless @tags
- @tags = Hash.new
- OldRelationTag.where("id = ? AND version = ?", self.id, self.version).each do |tag|
- @tags[tag.k] = tag.v
- end
- end
- @tags = Hash.new unless @tags
- @tags
- end
-
- def members=(s)
- @members = s
+ @tags ||= Hash[old_tags.collect { |t| [t.k, t.v] }]
end
- def tags=(t)
- @tags = t
- end
+ attr_writer :members
-# has_many :relation_segments, :class_name => 'OldRelationSegment', :foreign_key => 'id'
-# has_many :relation_tags, :class_name => 'OldRelationTag', :foreign_key => 'id'
-
- def old_members
- OldRelationMember.where('id = ? AND version = ?', self.id, self.version).order(:sequence_id)
- end
-
- def old_tags
- OldRelationTag.where('id = ? AND version = ?', self.id, self.version)
- end
+ attr_writer :tags
def to_xml
doc = OSM::API.new.get_xml_doc
- doc.root << to_xml_node()
- return doc
+ doc.root << to_xml_node
+ doc
end
- def to_xml_node
- el1 = XML::Node.new 'relation'
- el1['id'] = self.id.to_s
- el1['visible'] = self.visible.to_s
- el1['timestamp'] = self.timestamp.xmlschema
- if self.changeset.user.data_public?
- el1['user'] = self.changeset.user.display_name
- el1['uid'] = self.changeset.user.id.to_s
- end
- el1['version'] = self.version.to_s
- el1['changeset'] = self.changeset_id.to_s
-
- self.old_members.each do |member|
- e = XML::Node.new 'member'
- e['type'] = member.member_type.to_s.downcase
- e['ref'] = member.member_id.to_s # "id" is considered uncool here as it should be unique in XML
- e['role'] = member.member_role.to_s
- el1 << e
- end
-
- self.old_tags.each do |tag|
- e = XML::Node.new 'tag'
- e['k'] = tag.k
- e['v'] = tag.v
- el1 << e
+ def to_xml_node(changeset_cache = {}, user_display_name_cache = {})
+ el = XML::Node.new "relation"
+ el["id"] = relation_id.to_s
+
+ add_metadata_to_xml_node(el, self, changeset_cache, user_display_name_cache)
+
+ old_members.each do |member|
+ member_el = XML::Node.new "member"
+ member_el["type"] = member.member_type.to_s.downcase
+ member_el["ref"] = member.member_id.to_s # "id" is considered uncool here as it should be unique in XML
+ member_el["role"] = member.member_role.to_s
+ el << member_el
end
- return el1
- end
- # Temporary method to match interface to nodes
- def tags_as_hash
- return self.tags
+ add_tags_to_xml_node(el, old_tags)
+
+ el
end
# Temporary method to match interface to relations
def relation_members
- return self.old_members
+ old_members
end
# Pretend we're not in any relations
def containing_relation_members
- return []
+ []
+ end
+
+ # check whether this element is the latest version - that is,
+ # has the same version as its "current" counterpart.
+ def is_latest_version?
+ current_relation.version == version
end
end
projects / rails.git / blobdiff