DeltaIteration iteration = new DeltaIteration(0,"Loop");
iteration.setMaximumNumberOfIterations(10);
iteration.setInitialSolutionSet(source);
iteration.setInitialWorkset(mappedSource);
JoinOperator nextWorkset = JoinOperator.builder(DummyNonPreservingMatchStub.class, IntValue.class, 0,0).
input1(iteration.getWorkset()).
input2(reducedSource).
name("Next work set").
build();
JoinOperator solutionSetDelta = JoinOperator.builder(DummyNonPreservingMatchStub.class, IntValue.class, 0,
0).
input1(iteration.getSolutionSet()).
input2(nextWorkset).
name("Solution set delta").
build();