Method value

basex-core/src/main/java/org/basex/query/func/map/MapGet.java:18–27

(final QueryContext qc)

 */
public final class MapGet extends MapFn {
  @Override
  public Value value(final QueryContext qc) throws QueryException {
    final XQMap map = toMap(arg(0), qc);
    final Item key = toAtomItem(arg(1), qc);

    final Value value = map.getOrNull(key);
    if(value != null) return value;
    if(defined(2)) return arg(2).value(qc);
    return Empty.VALUE;
  }

  @Override
  protected Expr opt(final CompileContext cc) throws QueryException {