@Override
protected QueryIterator processMethod() throws AsyncException {
// subject a variable.
if (objectArgs.size() != 2)
throw new ExprEvalException("ListIndex : object not a list of length 2");
Node indexNode = objectArgs.get(0);
Node memberNode = objectArgs.get(1);
final Collection<Node> x;
if (!Var.isVar(memberNode))
// If memberNode is defined, find lists containing it.
x =
GraphList.listFromMember(
getHandler("x"), new GNode(execCxt.getActiveGraph(), memberNode));
else
// Hard. Subject unbound, no fixed member. Find every list and use BFI.
x = GraphList.findAllLists(getHandler("x"), execCxt.getActiveGraph());
return listIndex.super.allLists(
getHandler(""),
binding,
x,
listVar,
predicate,
new PropFuncArg(objectArgs, null),
execCxt);
}
