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Active Record 保存点事务 ↑

方法
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类公共方法

new(connection, savepoint_name, parent_transaction, **options)

来源: 显示 | 在 GitHub 上

# 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

实例公共方法

commit()

来源: 显示 | 在 GitHub 上

# 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

full_rollback?()

来源: 显示 | 在 GitHub 上

# File activerecord/lib/active_record/connection_adapters/abstract/transaction.rb, line 466
def full_rollback?; false; end

isolation()

委托给父事务的隔离级别

来源: 显示 | 在 GitHub 上

# File activerecord/lib/active_record/connection_adapters/abstract/transaction.rb, line 430
def isolation
  @parent_transaction.isolation
end

materialize!()

来源: 显示 | 在 GitHub 上

# File activerecord/lib/active_record/connection_adapters/abstract/transaction.rb, line 438
def materialize!
  connection.create_savepoint(savepoint_name)
  super
end

restart()

来源: 显示 | 在 GitHub 上

# 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()

来源: 显示 | 在 GitHub 上

# 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