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org.apache.commons.jelly.tags.util.SortTag |
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1 | /* |
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2 | * Copyright 2002,2004 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.jelly.tags.util; |
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18 | ||
19 | import java.util.ArrayList; |
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20 | import java.util.Collections; |
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21 | import java.util.List; |
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22 | ||
23 | import org.apache.commons.beanutils.BeanComparator; |
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24 | import org.apache.commons.jelly.JellyTagException; |
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25 | import org.apache.commons.jelly.MissingAttributeException; |
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26 | import org.apache.commons.jelly.TagSupport; |
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27 | import org.apache.commons.jelly.XMLOutput; |
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28 | ||
29 | 3 | public class SortTag extends TagSupport { |
30 | ||
31 | /** things to sort */ |
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32 | private List items; |
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33 | ||
34 | /** the variable to store the result in */ |
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35 | private String var; |
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36 | ||
37 | /** property of the beans to sort on, if any */ |
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38 | private String property; |
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39 | ||
40 | // Tag interface |
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41 | //------------------------------------------------------------------------- |
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42 | public void doTag(final XMLOutput output) throws JellyTagException { |
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43 | 3 | if (var == null) |
44 | { |
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45 | 0 | throw new MissingAttributeException("var"); |
46 | } |
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47 | ||
48 | 3 | if (items == null) { |
49 | 0 | throw new MissingAttributeException("items"); |
50 | } |
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51 | ||
52 | 3 | List sorted = new ArrayList(items); |
53 | 3 | if (property == null) { |
54 | 1 | Collections.sort(sorted); |
55 | } else { |
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56 | 2 | BeanComparator comparator = new BeanComparator(property); |
57 | 2 | Collections.sort(sorted, comparator); |
58 | } |
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59 | 3 | context.setVariable(var, sorted); |
60 | 3 | } |
61 | ||
62 | /** |
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63 | * Set the items to be sorted |
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64 | * @param newItems some collection |
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65 | */ |
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66 | public void setItems(List newItems) { |
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67 | 3 | items = newItems; |
68 | 3 | } |
69 | ||
70 | /** |
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71 | * The variable to hold the sorted collection. |
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72 | * @param newVar the name of the variable. |
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73 | */ |
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74 | public void setVar(String newVar) { |
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75 | 3 | var = newVar; |
76 | 3 | } |
77 | ||
78 | public void setProperty(String newProperty) |
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79 | { |
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80 | 2 | property = newProperty; |
81 | 2 | } |
82 | } |
This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |