private List<Object> explainInputs(List<RelNode> inputs) {
final List<Object> list = jsonBuilder.list();
for (RelNode input : inputs) {
String id = relIdMap.get(input);
if (id == null) {
input.explain(this);
id = previousId;
}
list.add(id);
}
return list;
}
public RelJsonWriter() {
jsonBuilder = new JsonBuilder();
relList = jsonBuilder.list();
relJson = new RelJson(jsonBuilder);
}