Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
WebUtils |
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| 2.5;2.5 |
1 | // Copyright 2005 The Apache Software Foundation |
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2 | // |
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3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
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4 | // you may not use this file except in compliance with the License. |
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5 | // You may obtain a copy of the License at |
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6 | // |
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7 | // http://www.apache.org/licenses/LICENSE-2.0 |
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8 | // |
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9 | // Unless required by applicable law or agreed to in writing, software |
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10 | // distributed under the License is distributed on an "AS IS" BASIS, |
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11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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12 | // See the License for the specific language governing permissions and |
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13 | // limitations under the License. |
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14 | ||
15 | package org.apache.tapestry.web; |
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16 | ||
17 | import java.util.ArrayList; |
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18 | import java.util.Collections; |
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19 | import java.util.Enumeration; |
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20 | import java.util.List; |
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21 | ||
22 | import org.apache.hivemind.util.Defense; |
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23 | ||
24 | /** |
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25 | * @author Howard M. Lewis Ship |
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26 | * @since 4.0 |
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27 | */ |
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28 | public final class WebUtils |
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29 | { |
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30 | /* defeat insantiation */ |
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31 | 0 | private WebUtils() { } |
32 | ||
33 | /** |
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34 | * Converts an Enumeration of Strings into an unmodifiable List of Strings, sorted into |
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35 | * ascending order. |
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36 | */ |
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37 | ||
38 | public static List toSortedList(Enumeration e) |
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39 | { |
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40 | 7 | Defense.notNull(e, "e"); |
41 | ||
42 | 7 | List list = new ArrayList(); |
43 | 19 | while (e.hasMoreElements()) |
44 | 12 | list.add(e.nextElement()); |
45 | ||
46 | 7 | if (list.isEmpty()) |
47 | 1 | return Collections.EMPTY_LIST; |
48 | ||
49 | 6 | Collections.sort(list); |
50 | ||
51 | 6 | return Collections.unmodifiableList(list); |
52 | } |
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53 | ||
54 | } |