@Override
public FTExpr copy(final QueryContext qc, final VarScope scp, final IntObjMap<Var> vs) {
final FTWords ftw =
new FTWords(
info,
query.copy(qc, scp, vs),
mode,
occ == null ? null : Arr.copyAll(qc, scp, vs, occ));
if (ftt != null) ftw.ftt = ftt.copy(ftw);
ftw.tokens = tokens;
ftw.data = data;
ftw.first = first;
ftw.pos = pos;
ftw.fast = fast;
return ftw;
}
@Override
public final Expr optimize(final QueryContext ctx, final VarScope scp) throws QueryException {
// invalidate current context value (will be overwritten by filter)
final Value cv = ctx.value;
try {
// return empty root
if (root.isEmpty()) return optPre(null, ctx);
// convert filters without numeric predicates to axis paths
if (root instanceof AxisPath && !super.has(Flag.FCS))
return ((AxisPath) root.copy(ctx, scp)).addPreds(ctx, scp, preds);
// no predicates.. return root; otherwise, do some advanced compilations
return preds.length == 0 ? root : opt(ctx);
} finally {
ctx.value = cv;
}
}
@Override
public Expr copy(final QueryContext qc, final VarScope scp, final IntObjMap<Var> vs) {
return new TypeSwitch(info, ts.copy(qc, scp, vs), Arr.copyAll(qc, scp, vs, cases));
}