diff options
Diffstat (limited to 'activerecord/lib/active_record/associations/alias_tracker.rb')
| -rw-r--r-- | activerecord/lib/active_record/associations/alias_tracker.rb | 33 |
1 files changed, 14 insertions, 19 deletions
diff --git a/activerecord/lib/active_record/associations/alias_tracker.rb b/activerecord/lib/active_record/associations/alias_tracker.rb index 096f016976..14881cfe17 100644 --- a/activerecord/lib/active_record/associations/alias_tracker.rb +++ b/activerecord/lib/active_record/associations/alias_tracker.rb @@ -6,36 +6,34 @@ module ActiveRecord module Associations # Keeps track of table aliases for ActiveRecord::Associations::JoinDependency class AliasTracker # :nodoc: - def self.create(connection, initial_table) - aliases = Hash.new(0) - aliases[initial_table] = 1 - new(connection, aliases) - end - - def self.create_with_joins(connection, initial_table, joins) + def self.create(connection, initial_table, joins) if joins.empty? - create(connection, initial_table) + aliases = Hash.new(0) else aliases = Hash.new { |h, k| h[k] = initial_count_for(connection, k, joins) } - aliases[initial_table] = 1 - new(connection, aliases) end + aliases[initial_table] = 1 + new(connection, aliases) end def self.initial_count_for(connection, name, table_joins) - # quoted_name should be downcased as some database adapters (Oracle) return quoted name in uppercase - quoted_name = connection.quote_table_name(name).downcase + quoted_name = nil counts = table_joins.map do |join| if join.is_a?(Arel::Nodes::StringJoin) + # quoted_name should be case ignored as some database adapters (Oracle) return quoted name in uppercase + quoted_name ||= connection.quote_table_name(name) + # Table names + table aliases - join.left.downcase.scan( - /join(?:\s+\w+)?\s+(\S+\s+)?#{quoted_name}\son/ + join.left.scan( + /JOIN(?:\s+\w+)?\s+(?:\S+\s+)?(?:#{quoted_name}|#{name})\sON/i ).size elsif join.respond_to? :left - join.left.table_name == name ? 1 : 0 + join.left.name == name ? 1 : 0 + elsif join.is_a?(Hash) + join.fetch(name, 0) else # this branch is reached by two tests: # @@ -79,10 +77,7 @@ module ActiveRecord end end - # TODO Change this to private once we've dropped Ruby 2.2 support. - # Workaround for Ruby 2.2 "private attribute?" warning. - protected - attr_reader :aliases + attr_reader :aliases private |