Set sourceFeature = c.getSourceFeatureSet();
Set sinkFeature = c.getSinkFeatureSet();
if(sourceFeature.isEmpty() || sinkFeature.isEmpty())
continue;
CompositeConstraintType type = c.getPLType();
int tempBddi = -1,
tempBddj = -1;
// ����source��BDD
if (c.getSourceType() == CompositeConstraintPortType.All){