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org.apache.commons.configuration.StrictConfigurationComparator |
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1 | /* |
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2 | * Copyright 2001-2004 The Apache Software Foundation. |
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3 | * |
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4 | * Licensed under the Apache License, Version 2.0 (the "License") |
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5 | * you may not use this file except in compliance with the License. |
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6 | * You may obtain a copy of the License at |
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7 | * |
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8 | * http://www.apache.org/licenses/LICENSE-2.0 |
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9 | * |
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10 | * Unless required by applicable law or agreed to in writing, software |
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11 | * distributed under the License is distributed on an "AS IS" BASIS, |
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12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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13 | * See the License for the specific language governing permissions and |
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14 | * limitations under the License. |
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15 | */ |
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16 | ||
17 | package org.apache.commons.configuration; |
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18 | ||
19 | import java.util.Iterator; |
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20 | ||
21 | /** |
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22 | * Strict comparator for configurations. |
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23 | * |
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24 | * @since 1.0 |
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25 | * |
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26 | * @author <a href="mailto:herve.quiroz@esil.univ-mrs.fr">Herve Quiroz</a> |
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27 | * @author <a href="mailto:shapira@mpi.com">Yoav Shapira</a> |
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28 | * @version $Revision$, $Date: 2005-02-26 13:56:39 +0100 (Sat, 26 Feb 2005) $ |
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29 | */ |
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30 | public class StrictConfigurationComparator implements ConfigurationComparator |
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31 | { |
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32 | /** |
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33 | * Create a new strict comparator. |
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34 | */ |
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35 | public StrictConfigurationComparator() |
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36 | 18 | { |
37 | 18 | } |
38 | ||
39 | /** |
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40 | * Compare two configuration objects. |
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41 | * |
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42 | * @param a the first configuration |
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43 | * @param b the second configuration |
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44 | * @return true if keys from a are found in b and keys from b are |
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45 | * found in a and for each key in a, the corresponding value |
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46 | * is the sale in for the same key in b |
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47 | */ |
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48 | public boolean compare(Configuration a, Configuration b) |
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49 | { |
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50 | 39 | if (a == null && b == class="keyword">null) |
51 | { |
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52 | 3 | return true; |
53 | } |
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54 | 36 | else if (a == null || b == class="keyword">null) |
55 | { |
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56 | 6 | return false; |
57 | } |
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58 | ||
59 | 111 | for (Iterator keys = a.getKeys(); keys.hasNext();) |
60 | { |
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61 | 54 | String key = (String) keys.next(); |
62 | 54 | Object value = a.getProperty(key); |
63 | 54 | if (!value.equals(b.getProperty(key))) |
64 | { |
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65 | 3 | return false; |
66 | } |
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67 | } |
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68 | ||
69 | 105 | for (Iterator keys = b.getKeys(); keys.hasNext();) |
70 | { |
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71 | 54 | String key = (String) keys.next(); |
72 | 54 | Object value = b.getProperty(key); |
73 | 54 | if (!value.equals(a.getProperty(key))) |
74 | { |
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75 | 3 | return false; |
76 | } |
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77 | } |
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78 | ||
79 | 24 | return true; |
80 | } |
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81 | } |
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