| /* |
| * 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. |
| */ |
| package org.apache.pig.impl.builtin; |
| |
| import java.io.IOException; |
| import java.util.Random; |
| |
| import org.apache.pig.EvalFunc; |
| import org.apache.pig.data.Tuple; |
| |
| |
| /** |
| * built-in grouping function; permits system to choose any grouping. |
| */ |
| public class GFAny extends EvalFunc<Integer> { |
| public static final int defaultNumGroups = 1000; |
| |
| int numGroups = defaultNumGroups; |
| Random r = new Random(); |
| |
| public GFAny(){} |
| |
| public GFAny(int numGroups){ |
| this.numGroups = numGroups; |
| } |
| |
| @Override |
| public Integer exec(Tuple input) throws IOException{ |
| return r.nextInt(numGroups); |
| } |
| } |