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Contents
require 'active_record/connection_adapters/abstract/transaction'
# MSSQL doe not restore the initial transaction isolation when the transaction
# isolation ends as opposed to PostgreSQL, This extension is to fix that.
module ActiveRecord
module ConnectionAdapters
module MSSQL
module TransactionExt
private
# This is required when the app has two database connections to
# different database vendors, e.g. one MSSQL and the other PostgreSQL
# so we don't mess up postgres transactions
def mssql?
connection.respond_to?(:mssql?) && connection.mssql?
end
def current_transaction_isolation
return unless mssql?
connection.transaction_isolation
end
end
module RealTransactionExt
attr_reader :initial_transaction_isolation
def initialize(connection, options, *args)
@connection = connection
if options[:isolation]
@initial_transaction_isolation = current_transaction_isolation
end
super
end
def commit
super
restore_initial_isolation_level
end
def rollback
super
restore_initial_isolation_level
end
private
def restore_initial_isolation_level
return unless mssql?
return unless initial_transaction_isolation
connection.transaction_isolation = initial_transaction_isolation
end
end
end
class Transaction
prepend MSSQL::TransactionExt
end
class RealTransaction
prepend MSSQL::RealTransactionExt
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems