/** * Performs the doc function. * * @param qc query context * @return result * @throws QueryException query exception */ ANode doc(final QueryContext qc) throws QueryException { final Item it = exprs[0].item(qc, info); if (it == null) return null; final byte[] in = toToken(it); if (!Uri.uri(in).isValid()) throw INVDOC_X.get(info, in); return qc.resources.doc(new QueryInput(string(in)), sc.baseIO(), info); }
/** * Returns a collection. * * @param qc query context * @return collection * @throws QueryException query exception */ Value collection(final QueryContext qc) throws QueryException { // return default collection final Item it = exprs.length == 0 ? null : exprs[0].atomItem(qc, info); if (it == null) return qc.resources.collection(info); // check if reference is valid final byte[] in = toToken(it); if (!Uri.uri(in).isValid()) throw INVCOLL_X.get(info, in); return qc.resources.collection(new QueryInput(string(in)), sc.baseIO(), info); }
/** * Returns the name of the geometry type in the GML namespace, or the empty sequence. * * @param node xml element containing gml object(s) * @return integer value of CRS of the geometry * @throws QueryException query exception */ @Deterministic public Uri srid(final ANode node) throws QueryException { return Uri.uri(token(checkGeo(node).getSRID())); }