| /* |
| * 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 org.apache.pig.AccumulatorEvalFunc; |
| import org.apache.pig.AlgebraicEvalFunc; |
| import org.apache.pig.EvalFunc; |
| import org.apache.pig.Accumulator; |
| import org.apache.pig.Algebraic; |
| import org.apache.pig.builtin.COUNT; |
| import org.apache.pig.builtin.LongSum; |
| import org.apache.pig.data.Tuple; |
| |
| public class HelperEvalFuncUtils { |
| public static class AlgCOUNT extends AlgFunc<Long> { |
| public AlgCOUNT() { |
| super(new COUNT()); |
| } |
| } |
| |
| public static class AccCOUNT extends AccFunc<Long> { |
| public AccCOUNT() { |
| super(new COUNT()); |
| } |
| } |
| |
| public static class BasicCOUNT extends BasicFunc<Long> { |
| public BasicCOUNT() { |
| super(new COUNT()); |
| } |
| } |
| |
| public static class AlgSUM extends AlgFunc<Long> { |
| public AlgSUM() { |
| super(new LongSum()); |
| } |
| } |
| |
| public static class AccSUM extends AccFunc<Long> { |
| public AccSUM() { |
| super(new LongSum()); |
| } |
| } |
| |
| public static class BasicSUM extends BasicFunc<Long> { |
| public BasicSUM() { |
| super(new LongSum()); |
| } |
| } |
| |
| public static class AlgFunc<T> extends AlgebraicEvalFunc<T> { |
| Algebraic f; |
| |
| public AlgFunc(Algebraic f) { |
| this.f=f; |
| } |
| |
| @Override |
| public String getInitial() { |
| if (f==null) { |
| return LongSum.Initial.class.getName(); |
| } |
| return f.getInitial(); |
| } |
| |
| @Override |
| public String getIntermed() { |
| if (f==null) { |
| return LongSum.Intermediate.class.getName(); |
| } |
| return f.getIntermed(); |
| } |
| |
| @Override |
| public String getFinal() { |
| if (f==null) { |
| return LongSum.Final.class.getName(); |
| } |
| return f.getFinal(); |
| } |
| } |
| |
| public static class AccFunc<T> extends AccumulatorEvalFunc<T> { |
| Accumulator<T> f; |
| |
| public AccFunc(Accumulator<T> f) { |
| this.f=f; |
| } |
| |
| @Override |
| public T getValue() { |
| return f.getValue(); |
| } |
| |
| @Override |
| public void accumulate(Tuple input) throws IOException { |
| f.accumulate(input); |
| } |
| |
| @Override |
| public void cleanup() { |
| f.cleanup(); |
| } |
| } |
| |
| public static class BasicFunc<T> extends EvalFunc<T> { |
| EvalFunc<T> f; |
| |
| public BasicFunc(EvalFunc<T> f) { |
| this.f=f; |
| } |
| |
| @Override |
| public T exec(Tuple input) throws IOException { |
| return f.exec(input); |
| } |
| } |
| |
| public static class AccLongCountWithConstructor extends AccFunc<Long> { |
| public AccLongCountWithConstructor(String mult) { |
| super(new AlgLongCountWithConstructor(mult)); |
| } |
| } |
| |
| public static class BasicLongCountWithConstructor extends BasicFunc<Long> { |
| public BasicLongCountWithConstructor(String mult) { |
| super(new AlgLongCountWithConstructor(mult)); |
| } |
| } |
| |
| //this exists to make sure that constructors work properly with AlgebraicEvalFunc |
| public static class AlgLongCountWithConstructor extends AlgebraicEvalFunc<Long> { |
| //this will inflate the count by the given factor |
| public AlgLongCountWithConstructor(String mult) { |
| super(mult); |
| } |
| |
| public static class Initial extends COUNT.Initial { |
| long mult=1; |
| public Initial() {} |
| |
| public Initial(String mult) { |
| this.mult = Long.parseLong(mult); |
| } |
| |
| public Tuple exec(Tuple input) throws IOException { |
| Tuple t = super.exec(input); |
| t.set(0,((Long)t.get(0))*mult); |
| return t; |
| } |
| } |
| |
| public static class Intermed extends COUNT.Intermediate { |
| public Intermed() {} |
| public Intermed(String mult) {} |
| } |
| |
| public static class Final extends COUNT.Final { |
| public Final() {} |
| public Final(String mult) {} |
| } |
| |
| @Override |
| public String getInitial() { |
| return Initial.class.getName(); |
| } |
| |
| @Override |
| public String getIntermed() { |
| return Intermed.class.getName(); |
| } |
| |
| @Override |
| public String getFinal() { |
| return Final.class.getName(); |
| } |
| } |
| } |