@Override
public Item item(final QueryContext qc, final InputInfo ii) throws QueryException {
final Iter ir = iter(qc);
final Item it = ir.next();
if (it == null || ir.size() == 1) return it;
final Item n = ir.next();
if (n != null) {
final ValueBuilder vb = new ValueBuilder().add(it).add(n);
if (ir.next() != null) vb.add(Str.get(DOTS));
throw SEQFOUND_X.get(info, vb.value());
}
return it;
}
@Override
public Item item(final QueryContext qc, final InputInfo ii) throws QueryException {
final String form = string(toToken(exprs[0], qc));
final int es = exprs.length;
final Object[] args = new Object[es - 1];
for (int e = 1; e < es; e++) {
final Item it = exprs[e].item(qc, info);
args[e - 1] = it == null ? null : it.type.isUntyped() ? string(it.string(info)) : it.toJava();
}
try {
return Str.get(String.format(form, args));
} catch (final RuntimeException ex) {
throw ERRFORMAT_X_X.get(info, Util.className(ex), ex);
}
}
@Override
public final Item ebv(final QueryContext qc, final InputInfo ii) throws QueryException {
final Item it;
if (seqType().zeroOrOne()) {
it = item(qc, info);
} else {
final Iter ir = iter(qc);
it = ir.next();
if (it != null && !(it instanceof ANode)) {
final Item n = ir.next();
if (n != null) {
final ValueBuilder vb = new ValueBuilder().add(it).add(n);
if (ir.next() != null) vb.add(Str.get(DOTS));
throw EBV_X.get(info, vb.value());
}
}
}
return it == null ? Bln.FALSE : it;
}
@Override
public String toString() {
final boolean text = index.type() == IndexType.TEXT;
final Function func = text ? Function._DB_TEXT_RANGE : Function._DB_ATTRIBUTE_RANGE;
return func.toString(Str.get(ictx.data.meta.name), Str.get(index.min), Str.get(index.max));
}
/**
* Returns a database function for the first node in a node set.
*
* @param n node set
* @param i offset
* @return function string
*/
static String openPre(final Nodes n, final int i) {
return Function._DB_OPEN_PRE.get(Str.get(n.data.meta.name), Int.get(n.pres[i])).toString();
}
@Override
public Value value(final QueryContext qc) {
final ValueBuilder vb = new ValueBuilder();
for (final Object k : System.getenv().keySet()) vb.add(Str.get(k.toString()));
return vb.value();
}