@Override
public Expr copy(final QueryContext qc, final VarScope scp, final IntObjMap<Var> vs) {
final Var v = scp.addCopy(var, qc);
vs.put(var.id, v);
final Spec spec = new Spec(info, v, expr.copy(qc, scp, vs), coll);
spec.occluded = occluded;
return spec;
}
@Override
public void plan(final FElem plan) {
final FElem e = planElem();
for (final Spec spec : specs) spec.plan(e);
plan.add(e);
}
@Override
public GroupBy compile(final QueryContext qc, final VarScope sc) throws QueryException {
for (final Expr e : preExpr) e.compile(qc, sc);
for (final Spec b : specs) b.compile(qc, sc);
return optimize(qc, sc);
}
@Override
public boolean removable(final Var var) {
for (final Spec b : specs) if (!b.removable(var)) return false;
return true;
}
@Override
public boolean has(final Flag flag) {
for (final Spec sp : specs) if (sp.has(flag)) return true;
return false;
}