Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with
or
.
Download ZIP
Tag: v3.2.7.rc1
Fetching contributors…

Cannot retrieve contributors at this time

51 lines (42 sloc) 1.353 kB
module ActiveRecord
module ConnectionAdapters
class SchemaCache
attr_reader :columns, :columns_hash, :primary_keys, :tables
attr_reader :connection
def initialize(conn)
@connection = conn
@tables = {}
@columns = Hash.new do |h, table_name|
h[table_name] = conn.columns(table_name, "#{table_name} Columns")
end
@columns_hash = Hash.new do |h, table_name|
h[table_name] = Hash[columns[table_name].map { |col|
[col.name, col]
}]
end
@primary_keys = Hash.new do |h, table_name|
h[table_name] = table_exists?(table_name) ? conn.primary_key(table_name) : nil
end
end
# A cached lookup for table existence.
def table_exists?(name)
return @tables[name] if @tables.key? name
@tables[name] = connection.table_exists?(name)
end
# Clears out internal caches
def clear!
@columns.clear
@columns_hash.clear
@primary_keys.clear
@tables.clear
end
# Clear out internal caches for table with +table_name+.
def clear_table_cache!(table_name)
@columns.delete table_name
@columns_hash.delete table_name
@primary_keys.delete table_name
@tables.delete table_name
end
end
end
end
Jump to Line
Something went wrong with that request. Please try again.