GFReplicate.java example

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spork-streaming-master
/*
 * 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 org.apache.pig.EvalFunc;
import org.apache.pig.data.BagFactory;
import org.apache.pig.data.DataBag;
import org.apache.pig.data.Tuple;
import org.apache.pig.data.TupleFactory;


public class GFReplicate extends EvalFunc<DataBag> {
    TupleFactory mTupleFactory = TupleFactory.getInstance();
    BagFactory mBagFactory = BagFactory.getInstance();

    int numGroups = GFAny.defaultNumGroups;
    
    public GFReplicate(){}
    
    public GFReplicate(int numGroups) {
        this.numGroups = numGroups;
    }
    
    @Override
    public DataBag exec(Tuple input) throws IOException {
        DataBag b = mBagFactory.newDefaultBag();
        for (int i = 0; i < numGroups; i++) {
            b.add(mTupleFactory.newTuple(Integer.valueOf(1)));
        }
        return b;
    }

}