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Class: ActiveRecord::ConnectionAdapters::SavepointTransaction

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, Transaction
Instance Chain:
self, Transaction
Inherits: ActiveRecord::ConnectionAdapters::Transaction
Defined in: activerecord/lib/active_record/connection_adapters/abstract/transaction.rb

Overview

Active Record Savepoint Transaction

Class Method Summary

Instance Attribute Summary

Transaction - Inherited

#closed?, #connection, #dirty?, #full_rollback?,
#isolation

Returns the isolation level if it was explicitly set, nil otherwise.

#isolation=, #isolation_level, #joinable?, #materialized?, #open?,
#restartable?

Can this transaction’s current state be recreated by rollback+begin ?

#savepoint_name, #state, #user_transaction, #written

Instance Method Summary

Constructor Details

.new(connection, savepoint_name, parent_transaction, **options) ⇒ SavepointTransaction

[ GitHub ]

  
# File 'activerecord/lib/active_record/connection_adapters/abstract/transaction.rb', line 416

def initialize(connection, savepoint_name, parent_transaction, **options)
  super(connection, **options)

  @parent_transaction = parent_transaction
  parent_transaction.state.add_child(@state)

  if isolation_level
    raise ActiveRecord::TransactionIsolationError, "cannot set transaction isolation in a nested transaction"
  end

  @savepoint_name = savepoint_name
end

Instance Attribute Details

#full_rollback?Boolean (readonly)

[ GitHub ]

  
# File 'activerecord/lib/active_record/connection_adapters/abstract/transaction.rb', line 466

def full_rollback?; false; end

#isolation (rw)

Delegates to parent transaction’s isolation level

[ GitHub ]

  
# File 'activerecord/lib/active_record/connection_adapters/abstract/transaction.rb', line 430

def isolation
  @parent_transaction.isolation
end

#isolation=(isolation) (rw)

This method is for internal use only.
[ GitHub ]

  
# File 'activerecord/lib/active_record/connection_adapters/abstract/transaction.rb', line 434

def isolation=(isolation) # :nodoc:
  @parent_transaction.isolation = isolation
end

Instance Method Details

#commit

[ GitHub ]

  
# File 'activerecord/lib/active_record/connection_adapters/abstract/transaction.rb', line 460

def commit
  connection.release_savepoint(savepoint_name) if materialized?
  @state.commit!
  @instrumenter.finish(:commit) if materialized?
end

#materialize!

[ GitHub ]

  
# File 'activerecord/lib/active_record/connection_adapters/abstract/transaction.rb', line 438

def materialize!
  connection.create_savepoint(savepoint_name)
  super
end

#restart

[ GitHub ]

  
# File 'activerecord/lib/active_record/connection_adapters/abstract/transaction.rb', line 443

def restart
  return unless materialized?

  @instrumenter.finish(:restart)
  @instrumenter.start

  connection.rollback_to_savepoint(savepoint_name)
end

#rollback

[ GitHub ]

  
# File 'activerecord/lib/active_record/connection_adapters/abstract/transaction.rb', line 452

def rollback
  unless @state.invalidated?
    connection.rollback_to_savepoint(savepoint_name) if materialized? && connection.active?
  end
  @state.rollback!
  @instrumenter.finish(:rollback) if materialized?
end