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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the QtXmlPatterns module of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include "qnamepool_p.h" |
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43 #include "qxmlnamepool.h" |
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44 |
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45 QT_BEGIN_NAMESPACE |
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46 |
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47 /*! |
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48 \class QXmlNamePool |
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49 \brief The QXmlNamePool class is a table of shared strings referenced by instances of QXmlName. |
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50 \reentrant |
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51 \since 4.4 |
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52 \ingroup xml-tools |
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53 |
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54 QXmlNamePool is used to optimize operations on instances of |
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55 QXmlName. An instance of QXmlName represents an XML name in |
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56 a way that allows the XML name to be compared and passed around |
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57 efficiently. The efficiency is achieved by storing the strings |
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58 comprising the XML names in an instance of QXmlNamePool, where |
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59 they are mapped to binary identifiers, which are then packed |
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60 into a key which is stored in the QXmlName. |
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61 |
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62 This means that each instance of QXmlName is tied to the name |
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63 pool it was created with, and that name pool should be kept in |
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64 scope and used to create all instances of QXmlName that might |
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65 be compared. Note also that the name pool is required if you |
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66 must reconstitute the QXmlName as text, or if you must access |
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67 any of its component strings, so although instances of |
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68 QXmlName can be compared without reference to a name pool, the |
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69 name pool must be kept in scope if the name's strings must be |
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70 accessed later. |
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71 |
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72 \sa QXmlName |
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73 \sa QXmlQuery::namePool() |
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74 */ |
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75 |
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76 /*! |
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77 Constructs an empty name pool. |
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78 */ |
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79 QXmlNamePool::QXmlNamePool() : d(new QPatternist::NamePool()) |
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80 { |
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81 } |
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82 |
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83 /*! |
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84 Constructs a copy of the \a other name pool. |
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85 */ |
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86 QXmlNamePool::QXmlNamePool(const QXmlNamePool &other) : d(other.d) |
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87 { |
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88 } |
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89 |
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90 /*! |
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91 Destroys the name pool. Instances of QXmlName constructed |
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92 with this name pool can still be compared after this destructor |
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93 is called, but their text strings cannot be accessed. |
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94 */ |
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95 QXmlNamePool::~QXmlNamePool() |
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96 { |
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97 } |
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98 |
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99 QXmlNamePool::QXmlNamePool(QPatternist::NamePool *namePool) : d(QExplicitlySharedDataPointer<QPatternist::NamePool>(namePool)) |
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100 { |
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101 } |
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102 |
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103 /*! |
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104 Assigns the \a other name pool to this one. |
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105 */ |
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106 QXmlNamePool &QXmlNamePool::operator=(const QXmlNamePool &other) |
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107 { |
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108 d = other.d; |
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109 return *this; |
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110 } |
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111 |
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112 QT_END_NAMESPACE |
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113 |