PipelineWorkflow fromCache = new PipelineWorkflow();
fromCache.add(read);
fromCache.add(tupleToWRS);
fromCache.add(deliver);
SequenceWorkflow sequence = new SequenceWorkflow();
sequence.add(toCache);
sequence.add(fromCache);
long start = System.currentTimeMillis();
executeWorkflow(drer, sequence);
long stop = System.currentTimeMillis();