@Override
public NodeIter iter(final QueryContext ctx) throws QueryException {
final FTIter ir = ftexpr.iter(ctx);
return new NodeIter() {
@Override
public ANode next() throws QueryException {
final FTNode it = ir.next();
if (it != null) {
// add entry to visualization
if (ctx.ftpos != null) ctx.ftpos.add(it.data, it.pre, it.all);
// assign scoring, if not done yet
it.score();
// remove matches reference to save memory
it.all = null;
}
return it;
}
};
}
@Override
public void plan(final Serializer ser) throws IOException {
ser.openElement(this, DATA, token(ictx.data.meta.name));
ftexpr.plan(ser);
ser.closeElement();
}
@Override
public Expr remove(final Var v) {
ftexpr.remove(v);
return this;
}
@Override
public boolean removable(final Var v) {
return ftexpr.removable(v);
}
@Override
public int count(final Var v) {
return ftexpr.count(v);
}
@Override
public boolean uses(final Use u) {
return ftexpr.uses(u);
}
@Override
public boolean has(final Flag flag) {
for (final FTExpr e : exprs) if (e.has(flag)) return true;
return false;
}
/**
* Checks if sub expressions of a mild not operator violate the grammar.
*
* @return result of check
*/
boolean usesExclude() {
for (final FTExpr e : exprs) if (e.usesExclude()) return true;
return false;
}