| 1 | package com.hammurapi.extract; |
| 2 | |
| 3 | import java.util.concurrent.TimeUnit; |
| 4 | |
| 5 | |
| 6 | /** |
| 7 | * Numeric add. |
| 8 | * @author Pavel Vlasov |
| 9 | * |
| 10 | * @param <T> |
| 11 | * @param <C> |
| 12 | */ |
| 13 | public class Add<T, C> extends ArithmeticExtractor<T, Object, C> { |
| 14 | |
| 15 | public Add(double initialCost, TimeUnit costUnit, Extractor<T, Object, C> leftExtractor, Extractor<T, Object, C> rightExtractor) { |
| 16 | super(initialCost, costUnit, leftExtractor, rightExtractor, false); |
| 17 | } |
| 18 | |
| 19 | @Override |
| 20 | protected Object doOp(Object o1, Object o2) { |
| 21 | if (o1 instanceof String || o2 instanceof String) { |
| 22 | return ""+o1+o2; |
| 23 | } |
| 24 | throw new IllegalArgumentException("Can't add "+o1+" and "+o2); |
| 25 | } |
| 26 | |
| 27 | @Override |
| 28 | protected Object doOp(int n1, int n2) { |
| 29 | return n1+n2; |
| 30 | } |
| 31 | |
| 32 | @Override |
| 33 | protected Object doOp(long n1, long n2) { |
| 34 | return n1+n2; |
| 35 | } |
| 36 | |
| 37 | @Override |
| 38 | protected Object doOp(float n1, float n2) { |
| 39 | return n1+n2; |
| 40 | } |
| 41 | |
| 42 | @Override |
| 43 | protected Object doOp(double n1, double n2) { |
| 44 | return n1+n2; |
| 45 | } |
| 46 | |
| 47 | @Override |
| 48 | protected Extractor<T, Object, C> newInstance(Extractor<T, Object, C> leftExtractor, Extractor<T, Object, C> rightExtractor) { |
| 49 | return new Add<T,C>(initialCost, costUnit, leftExtractor, rightExtractor); |
| 50 | } |
| 51 | } |