tests/queries/udf_1.mrql

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

function fact ( n: int ): long {
   if n <= 0
   then 1 as long
   else n*fact(n-1)
};

fact(10);

store x := [xml| <a A="2"><b>1</b><b>2</b></a> |];

function children ( tag: string, s: list(XML) ) : list(XML) {
  select c from Node(t,*,cs) in s, c in cs where t=tag order by c
};

children("b",x.b);