/*
* 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.test.utils;
import java.io.IOException;
import java.util.Iterator;
import org.apache.pig.EvalFunc;
import org.apache.pig.data.DataBag;
import org.apache.pig.data.Tuple;
public class BagCount extends EvalFunc<Integer> {
public BagCount() {
}
public Integer exec(Tuple tuple) throws IOException {
DataBag databag = (DataBag)tuple.get(0);
if(databag == null) {
return new Integer(0);
}
int count = 0;
Iterator<Tuple> iterator = databag.iterator();
while(iterator.hasNext()) {
iterator.next();
count++;
}
return new Integer(count);
}
}