Classes in this File | Line Coverage | Branch Coverage | Complexity | |||||||
ExpressionComparator |
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| 0.0;0 |
1 | /** |
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2 | * Licensed to the Apache Software Foundation (ASF) under one or more |
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3 | * contributor license agreements. See the NOTICE file distributed with |
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4 | * this work for additional information regarding copyright ownership. |
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5 | * The ASF licenses this file to You under the Apache License, Version 2.0 |
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6 | * (the "License"); you may not use this file except in compliance with |
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7 | * the License. You may obtain a copy of the License at |
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8 | * |
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9 | * http://www.apache.org/licenses/LICENSE-2.0 |
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10 | * |
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11 | * Unless required by applicable law or agreed to in writing, software |
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12 | * distributed under the License is distributed on an "AS IS" BASIS, |
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13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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14 | * See the License for the specific language governing permissions and |
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15 | * limitations under the License. |
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16 | */ |
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17 | package org.apache.camel.util; |
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18 | ||
19 | import java.util.Comparator; |
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20 | ||
21 | import org.apache.camel.Exchange; |
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22 | import org.apache.camel.Expression; |
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23 | ||
24 | /** |
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25 | * An implementation of {@link Comparator} which takes an {@link Expression} which is evaluated |
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26 | * on each exchange to compare |
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27 | * |
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28 | * @version $Revision: 1.1 $ |
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29 | */ |
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30 | 15 | public class ExpressionComparator<E extends Exchange> implements Comparator<E> { |
31 | private final Expression<E> expression; |
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32 | ||
33 | 15 | public ExpressionComparator(Expression<E> expression) { |
34 | 15 | this.expression = expression; |
35 | 15 | } |
36 | ||
37 | public int compare(E e1, E e2) { |
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38 | 63 | Object o1 = expression.evaluate(e1); |
39 | 63 | Object o2 = expression.evaluate(e2); |
40 | 63 | return ObjectHelper.compare(o1, o2); |
41 | } |
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42 | } |