@Override
public Value value(final QueryContext qc) throws QueryException {
final ArrayList<User> users = qc.context.users.users(null, qc.context);
final TokenList tl = new TokenList(users.size());
for (final User user : users) tl.add(user.name());
return StrSeq.get(tl);
}
/**
* Returns all tokens of the query.
*
* @param qc query context
* @return token list
* @throws QueryException query exception
*/
private TokenList tokens(final QueryContext qc) throws QueryException {
final TokenList tl = new TokenList();
final Iter ir = qc.iter(query);
for (byte[] qu; (qu = nextToken(ir)) != null; ) {
// skip empty tokens if not all results are needed
if (qu.length != 0 || mode == FTMode.ALL || mode == FTMode.ALL_WORDS) tl.add(qu);
}
return tl;
}
/**
* Evaluates the tokenize function.
*
* @param ctx query context
* @return function result
* @throws QueryException query exception
*/
private Value tokenize(final QueryContext ctx) throws QueryException {
final byte[] val = checkEStr(expr[0], ctx);
final Pattern p = pattern(expr[1], expr.length == 3 ? expr[2] : null, ctx);
if (p.matcher("").matches()) REGROUP.thrw(info);
final TokenList tl = new TokenList();
final String str = string(val);
if (!str.isEmpty()) {
final Matcher m = p.matcher(str);
int s = 0;
while (m.find()) {
tl.add(str.substring(s, m.start()));
s = m.end();
}
tl.add(str.substring(s, str.length()));
}
return StrSeq.get(tl);
}
/**
* Recursively collects relevant thesaurus terms.
*
* @param list result list
* @param node input node
* @param level current level
*/
private void find(final TokenList list, final ThesNode node, final long level) {
if (level > max || node == null) return;
for (int n = 0; n < node.size; ++n) {
if (rel.length == 0 || eq(node.rs[n], rel)) {
final byte[] term = node.nodes[n].term;
if (!list.contains(term)) {
list.add(term);
find(list, node.nodes[n], level + 1);
}
}
}
}
/**
* Creates a container for the specified string.
*
* @param strings string
* @return iterator
*/
protected static Value strings(final String... strings) {
final TokenList tl = new TokenList(strings.length);
for (final String s : strings) tl.add(s);
return StrSeq.get(tl.finish());
}