public void setNextPartialSolution(OptimizerNode solutionSetDelta, OptimizerNode nextWorkset) {
// check whether the next partial solution is itself the join with
// the partial solution (so we can potentially do direct updates)
if (solutionSetDelta instanceof TwoInputNode) {
TwoInputNode solutionDeltaTwoInput = (TwoInputNode) solutionSetDelta;
if (solutionDeltaTwoInput.getFirstPredecessorNode() == this.solutionSetNode
|| solutionDeltaTwoInput.getSecondPredecessorNode() == this.solutionSetNode) {
this.solutionDeltaImmediatelyAfterSolutionJoin = true;
}
}
// attach an extra node to the solution set delta for the cases where we need to repartition
UnaryOperatorNode solutionSetDeltaUpdateAux =
new UnaryOperatorNode(
"Solution-Set Delta",
getSolutionSetKeyFields(),
new SolutionSetDeltaOperator(getSolutionSetKeyFields()));
solutionSetDeltaUpdateAux.setDegreeOfParallelism(getDegreeOfParallelism());
solutionSetDeltaUpdateAux.setSubtasksPerInstance(getSubtasksPerInstance());
PactConnection conn = new PactConnection(solutionSetDelta, solutionSetDeltaUpdateAux);
solutionSetDeltaUpdateAux.setIncomingConnection(conn);
solutionSetDelta.addOutgoingConnection(conn);
this.solutionSetDelta = solutionSetDeltaUpdateAux;
this.nextWorkset = nextWorkset;
this.singleRoot = new SingleRootJoiner();
this.solutionSetDeltaRootConnection =
new PactConnection(solutionSetDeltaUpdateAux, this.singleRoot);
this.nextWorksetRootConnection = new PactConnection(nextWorkset, this.singleRoot);
this.singleRoot.setInputs(this.solutionSetDeltaRootConnection, this.nextWorksetRootConnection);
solutionSetDeltaUpdateAux.addOutgoingConnection(this.solutionSetDeltaRootConnection);
nextWorkset.addOutgoingConnection(this.nextWorksetRootConnection);
}
