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POTransactionScope and rolling back object state
 

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    <p>I'm looking for a solution to a design problem. This will take a bit of explaining. I would post code, but that woul make this even longer. </p> <p>I have a custom generic collection I use to hold Business Objects as needed. For easy of reference, call the business objects <strong>BO</strong> and the generic collection <strong>GC</strong>. Inside GC I have a private collection of those business objects that have been flagged for deletion. Call this private collection <strong>PDC</strong>. </p> <p>I can have an arbitrary number of GC's, each with their own PDC, at any one time, plus other BOs that aren't in any collection.</p> <p>When I save changes I loop over all BO and GC and have each one save their changes. This happens wrapped in a TransactionScope so I rollback database changes if anything fails to save properly. </p> <p>When a GC saves I have a problem with the state of its PDC. The GC first saves all BOs with updates, then deletes records associated with the BOs in the PDC, then <strong>clears the PDC of all BOs</strong>. I do this so the state of the GC correctly reflects the new state of the database. </p> <p>Now suppose a BO or GC fails to save after one or more of the GC has successsfully saved . The TransactionScope performs a rollback. The records deleted from the database are restored, <strong>but the some/all of the PDC's have been cleared and that state information lost</strong>.</p> <p>So here is my quandry: How do I keep the PDC information around until after the commit has occured, then guarantee the appriopriate collections are cleared? </p> <p>TransactionScope has no event I can catch to let me know when it the changes have been committed. There are potentially MANY BOs and GC affected by any given transaction, so I can't restrict the transaction to handle one GC at a time. </p> <p>Any suggestions?</p>
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