Examples of org.xtreemfs.babudb.api.dev.transaction.InMemoryProcessing.process()

Package org.xtreemfs.babudb.api.dev.transaction

Class org.xtreemfs.babudb.api.dev.transaction.InMemoryProcessing

Examples of org.xtreemfs.babudb.api.dev.transaction.InMemoryProcessing.process()

org.xtreemfs.babudb.api.dev.transaction.InMemoryProcessing.process()
The database changes made by the operation can be read after this method returns. Although there are no persistence guarantees on a database crash e.g. there is no entry written to the log. @param operation @return a possible return value for the in-memory processing of the operation, may be null. @throws BabuDBException if the operation could not have been processed, due a user error.

                        OperationInternal operation = processingLogic.convertToOperation(processingLogic
                                .deserializeRequest(le.getPayload()));
                        
                        // execute the in-memory logic
                        try {
                            processingLogic.process(operation);
                        } catch (BabuDBException be) {
                            
                            // there might be false positives if a snapshot to
                            // delete has already been deleted, a snapshot to
                            // create has already been created, or an insertion

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                // get processing logic
                InMemoryProcessing processing = inMemoryProcessing.get(type);
                
                // replay in-memory changes
                try {
                    processing.process(operation);   
                } catch (BabuDBException be) {
                    
                    // there might be false positives if a snapshot to delete has already been 
                    // deleted or a snapshot to create has already been created.
                    // also there could be inserts for databases that have been deleted already.

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