Examples of edu.brown.hstore.Hstoreservice.WorkFragment

edu.brown.hstore.Hstoreservice.WorkFragment

        // the message wrapper (e.g., base partition, client handle)
        boolean first = true;
        int fragmentCount = request.getFragmentsCount(); 
        PartitionSet partitions = null;
        if (fragmentCount == 1) {
            WorkFragment work = CollectionUtil.first(request.getFragmentsList());
            partitions = this.catalogContext.getPartitionSetSingleton(work.getPartitionId());
        }
        else {
            partitions = new PartitionSet();
            for (WorkFragment work : request.getFragmentsList()) {
                partitions.add(work.getPartitionId());
            } // FOR
        }
        
        for (WorkFragment work : request.getFragmentsList()) {
            // Always initialize the TransactionWorkCallback for the first callback

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        }
        // -------------------------------
        // Execute Query Plan Fragments
        // -------------------------------
        else if (work instanceof WorkFragmentMessage) {
            WorkFragment fragment = ((WorkFragmentMessage)work).getFragment();
            assert(fragment != null);
            
            // HACK HACK HACK
            if (ts.isInitialized() == false) {
                LOG.warn(String.format("Skipping %s at partition %d for unitialized txn",
                         work.getClass().getSimpleName(), this.partitionId));
                return;
            }


            // Get the ParameterSet array for this WorkFragment
            // It can either be attached to the AbstractTransaction handle if it came
            // over the wire directly from the txn's base partition, or it can be attached
            // as for prefetch WorkFragments 
            ParameterSet parameters[] = null;
            if (fragment.getPrefetch()) {
                parameters = ts.getPrefetchParameterSets();
                ts.markExecPrefetchQuery(this.partitionId);
                if (trace.val && ts.isSysProc() == false)
                    LOG.trace(ts + " - Prefetch Parameters:\n" + StringUtil.join("\n", parameters));
            } else {
                parameters = ts.getAttachedParameterSets();
                if (trace.val && ts.isSysProc() == false) 
                    LOG.trace(ts + " - Attached Parameters:\n" + StringUtil.join("\n", parameters));
            }
            
            // At this point we know that we are either the current dtxn or the current dtxn is null
            // We will allow any read-only transaction to commit if
            // (1) The WorkFragment for the remote txn is read-only
            // (2) This txn has always been read-only up to this point at this partition
            ExecutionMode newMode = null;
            if (hstore_conf.site.specexec_enable) {
                if (fragment.getReadOnly() && ts.isExecReadOnly(this.partitionId)) {
                    newMode = ExecutionMode.COMMIT_READONLY ;
                } else {
                    newMode = ExecutionMode.COMMIT_NONE;
                }
            } else {

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                    assert(fragmentBuilder.getPartitionId() == this.partitionId) :
                        String.format("Trying to process %s for %s on partition %d but it should have been " +
                                      "sent to partition %d [singlePartition=%s]\n%s",
                                      fragmentBuilder.getClass().getSimpleName(), ts, this.partitionId,
                                      fragmentBuilder.getPartitionId(), predict_singlePartition, fragmentBuilder);
                    WorkFragment fragment = fragmentBuilder.build();
                    this.processWorkFragment(ts, fragment, batchParams);
                } // FOR
            }
            // -------------------------------
            // SLOW PATH: Mixed local and remote messages

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Related Classes of edu.brown.hstore.Hstoreservice.WorkFragment

edu.brown.hstore.handlers.TransactionWorkHandler

edu.brown.hstore.PartitionExecutor

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