TransactionScope and DependantTransaction

Question

Can I get an example usage that is not related to either DB or File-IO?

I've read about IEnlistmentNotification and Transactions and was wondering if I can use Transactional behavior for my custom classes (like my own resource manager) which is in memory only?

Scenario I was wondering - Let's say I have some data structure in memory which has some 5 properties (thread safe). I launch 5 threads to update one property each (lets say its computationally intensive). Now 4 may succeed and 5th may fail in which case I want to roll-back my data structure to its original state. Can I implement DependantTransaction for this case?

PS: I know I can manually save a cloned copy, revert it back in catch block, etc.

score 1 · Accepted Answer · answered May 31 '12 at 07:34

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There have been some 3rd-party implementations of transaction-scope providers for in-memory objects; however, generally speaking they're a bit flakey and not really worth the pain - especially since you are using threading. Frankly, I strongly suggest you look more at regular memento patterns, or immutable data structures that don't need rolling back (i.e. you just discard the separate, mutated copy).

Yes it can probably be done, but unless writing a transaction-scope provider is the purpose of your project, I would recommend you focus on delivering application logic first. Just sayin'

answered May 31 '12 at 07:34

Marc Gravell

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Thanks for the Memento Pattern :) – Makubex May 31 '12 at 09:05
Can you give example usages pls.. I still don't know where it can be used other than DB.. – Makubex May 31 '12 at 09:17
@Makubex other usage other than DB? How about WCF? MSMQ? they both support transactions. However, **transactional memory** is ... awkward. – Marc Gravell May 31 '12 at 10:30

score 1 · Answer 2 · edited May 23 '17 at 12:20

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Found these if any one else is interested -

Another SO question

STM in C#

STM.NET Library

edited May 23 '17 at 12:20

Community

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answered May 31 '12 at 09:10

Makubex

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TransactionScope and DependantTransaction

2 Answers2