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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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27 ** |
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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 <QUrl> |
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43 #include <QVector> |
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44 #include <QXmlNamePool> |
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45 |
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46 #include "qabstractxmlnodemodel_p.h" |
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47 #include "qemptyiterator_p.h" |
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48 #include "qitemmappingiterator_p.h" |
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49 #include "qsequencemappingiterator_p.h" |
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50 #include "qsimplexmlnodemodel.h" |
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51 #include "qsingletoniterator_p.h" |
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52 |
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53 QT_BEGIN_NAMESPACE |
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54 |
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55 using namespace QPatternist; |
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56 |
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57 class QSimpleXmlNodeModelPrivate : public QAbstractXmlNodeModelPrivate |
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58 { |
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59 public: |
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60 QSimpleXmlNodeModelPrivate(const QXmlNamePool &np) : namePool(np) |
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61 { |
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62 } |
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63 |
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64 mutable QXmlNamePool namePool; |
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65 }; |
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66 |
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67 /*! |
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68 \class QSimpleXmlNodeModel |
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69 \brief The QSimpleXmlNodeModel class is an implementation of QAbstractXmlNodeModel sufficient for many common cases. |
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70 \reentrant |
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71 \since 4.4 |
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72 \ingroup xml-tools |
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73 |
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74 Subclassing QAbstractXmlNodeModel can be a significant task, because it |
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75 requires implementing several, complex member functions. QSimpleXmlNodeModel |
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76 provides default implementations of these member functions that are suitable |
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77 for a wide range of node models. |
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78 |
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79 Subclasses of QSimpleXmlNodeModel must be thread-safe. |
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80 */ |
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81 |
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82 /*! |
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83 Constructs a QSimpleXmlNodeModel for use with with the specified |
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84 \a namePool. |
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85 */ |
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86 QSimpleXmlNodeModel::QSimpleXmlNodeModel(const QXmlNamePool &namePool) |
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87 : QAbstractXmlNodeModel(new QSimpleXmlNodeModelPrivate(namePool)) |
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88 { |
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89 } |
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90 |
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91 /*! |
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92 Destructor. |
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93 */ |
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94 QSimpleXmlNodeModel::~QSimpleXmlNodeModel() |
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95 { |
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96 } |
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97 |
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98 /*! |
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99 If \a node is an element or attribute, typedValue() is called, and |
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100 the return value converted to a string, as per XQuery's rules. |
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101 |
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102 If \a node is another type of node, the empty string is returned. |
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103 |
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104 If this function is overridden for comments or processing |
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105 instructions, it is important to remember to call it (for elements |
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106 and attributes having values not of type \c xs:string) to ensure that |
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107 the values are formatted according to XQuery. |
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108 |
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109 */ |
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110 QString QSimpleXmlNodeModel::stringValue(const QXmlNodeModelIndex &node) const |
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111 { |
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112 const QXmlNodeModelIndex::NodeKind k= kind(node); |
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113 if(k == QXmlNodeModelIndex::Element || k == QXmlNodeModelIndex::Attribute) |
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114 { |
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115 const QVariant &candidate = typedValue(node); |
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116 if(candidate.isNull()) |
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117 return QString(); |
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118 else |
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119 return AtomicValue::toXDM(candidate).stringValue(); |
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120 } |
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121 else |
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122 return QString(); |
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123 } |
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124 |
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125 /*! |
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126 Returns the base URI for \a node. This is always the document |
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127 URI. |
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128 |
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129 \sa documentUri() |
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130 */ |
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131 QUrl QSimpleXmlNodeModel::baseUri(const QXmlNodeModelIndex &node) const |
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132 { |
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133 return documentUri(node); |
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134 } |
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135 |
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136 /*! |
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137 Returns the name pool associated with this model. The |
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138 implementation of name() will use this name pool to create |
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139 names. |
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140 */ |
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141 QXmlNamePool &QSimpleXmlNodeModel::namePool() const |
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142 { |
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143 Q_D(const QSimpleXmlNodeModel); |
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144 |
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145 return d->namePool; |
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146 } |
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147 |
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148 /*! |
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149 Always returns an empty QVector. This signals that no namespace |
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150 bindings are in scope for \a node. |
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151 */ |
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152 QVector<QXmlName> QSimpleXmlNodeModel::namespaceBindings(const QXmlNodeModelIndex &node) const |
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153 { |
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154 Q_UNUSED(node); |
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155 return QVector<QXmlName>(); |
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156 } |
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157 |
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158 /*! |
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159 Always returns a default constructed QXmlNodeModelIndex instance, |
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160 regardless of \a id. |
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161 |
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162 This effectively means the model has no elements that have an id. |
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163 */ |
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164 QXmlNodeModelIndex QSimpleXmlNodeModel::elementById(const QXmlName &id) const |
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165 { |
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166 Q_UNUSED(id); |
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167 return QXmlNodeModelIndex(); |
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168 } |
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169 |
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170 /*! |
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171 Always returns an empty vector, regardless of \a idref. |
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172 |
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173 This effectively means the model has no elements or attributes of |
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174 type \c IDREF. |
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175 */ |
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176 QVector<QXmlNodeModelIndex> QSimpleXmlNodeModel::nodesByIdref(const QXmlName &idref) const |
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177 { |
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178 Q_UNUSED(idref); |
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179 return QVector<QXmlNodeModelIndex>(); |
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180 } |
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181 |
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182 QT_END_NAMESPACE |
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183 |
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184 |