// Throw an error, in case the query matches everywhere
if (qw.isEmpty())
this.addError(780, "This query matches everywhere");
else {
// Throw an error, in case the query matches everywhere
if (qw.isEmpty()) {
this.addError(780, "This query matches everywhere");
}
else if (qw.isNull()) {
this.addError(783, "This query can't match anywhere");
}
else {