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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2008 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 // |
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43 // W A R N I N G |
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44 // ------------- |
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45 // |
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46 // This file is not part of the Qt API. It exists purely as an |
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47 // implementation detail. This header file may change from version to |
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48 // version without notice, or even be removed. |
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49 // |
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50 // We mean it. |
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51 |
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52 #ifndef Patternist_XsdIdcHelper_H |
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53 #define Patternist_XsdIdcHelper_H |
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54 |
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55 #include "qreportcontext_p.h" |
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56 #include "qschematype_p.h" |
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57 |
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58 #include <QtXmlPatterns/QXmlItem> |
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59 |
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60 QT_BEGIN_HEADER |
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61 |
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62 QT_BEGIN_NAMESPACE |
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63 |
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64 namespace QPatternist |
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65 { |
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66 |
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67 /** |
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68 * @short A helper class for validating identity constraints. |
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69 * |
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70 * This class represents a field node from the key-sequence as defined in |
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71 * the validation rules at http://www.w3.org/TR/xmlschema11-1/#d0e32243. |
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72 */ |
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73 class FieldNode |
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74 { |
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75 public: |
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76 /** |
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77 * Creates an empty field node. |
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78 */ |
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79 FieldNode(); |
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80 |
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81 /** |
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82 * Creates a field node that is bound to a xml node. |
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83 * |
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84 * @param item The xml node the field is bound to. |
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85 * @param data The string content of that field. |
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86 * @param type The type that is bound to that field. |
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87 */ |
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88 FieldNode(const QXmlItem &item, const QString &data, const SchemaType::Ptr &type); |
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89 |
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90 /** |
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91 * Returns whether this field is empty. |
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92 * |
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93 * A field can be empty, if the xpath expression selects an absent attribute |
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94 * or element. |
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95 */ |
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96 bool isEmpty() const; |
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97 |
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98 /** |
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99 * Returns whether this field is equal to the @p other field. |
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100 * |
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101 * Equal means that both have the same type and there content is equal in the |
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102 * types value space. |
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103 */ |
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104 bool isEqualTo(const FieldNode &other, const NamePool::Ptr &namePool, const ReportContext::Ptr &context, const SourceLocationReflection *const reflection) const; |
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105 |
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106 /** |
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107 * Returns the xml node item the field is bound to. |
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108 */ |
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109 QXmlItem item() const; |
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110 |
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111 private: |
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112 QXmlItem m_item; |
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113 QString m_data; |
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114 SchemaType::Ptr m_type; |
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115 }; |
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116 |
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117 /** |
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118 * @short A helper class for validating identity constraints. |
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119 * |
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120 * This class represents a target or qualified node from the target or qualified |
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121 * node set as defined in the validation rules at http://www.w3.org/TR/xmlschema11-1/#d0e32243. |
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122 * |
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123 * A target node is part of the qualified node set, if all of its fields are not empty. |
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124 */ |
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125 class TargetNode |
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126 { |
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127 public: |
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128 /** |
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129 * Defines a set of target nodes. |
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130 */ |
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131 typedef QSet<TargetNode> Set; |
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132 |
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133 /** |
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134 * Creates a new target node that is bound to the xml node @p item. |
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135 */ |
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136 explicit TargetNode(const QXmlItem &item); |
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137 |
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138 /** |
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139 * Returns the xml node item the target node is bound to. |
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140 */ |
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141 QXmlItem item() const; |
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142 |
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143 /** |
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144 * Returns all xml node items, the fields of that target node are bound to. |
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145 */ |
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146 QVector<QXmlItem> fieldItems() const; |
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147 |
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148 /** |
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149 * Returns the number of fields that are empty. |
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150 */ |
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151 int emptyFieldsCount() const; |
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152 |
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153 /** |
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154 * Returns whether the target node has the same fields as the @p other target node. |
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155 */ |
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156 bool fieldsAreEqual(const TargetNode &other, const NamePool::Ptr &namePool, const ReportContext::Ptr &context, const SourceLocationReflection *const reflection) const; |
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157 |
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158 /** |
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159 * Adds a new field to the target node with the given values. |
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160 */ |
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161 void addField(const QXmlItem &item, const QString &data, const SchemaType::Ptr &type); |
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162 |
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163 /** |
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164 * Returns whether the target node is equal to the @p other target node. |
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165 */ |
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166 bool operator==(const TargetNode &other) const; |
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167 |
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168 private: |
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169 QXmlItem m_item; |
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170 QVector<FieldNode> m_fields; |
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171 }; |
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172 |
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173 /** |
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174 * Creates a hash value for the given target @p node. |
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175 */ |
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176 inline uint qHash(const QPatternist::TargetNode &node) |
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177 { |
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178 return qHash(node.item().toNodeModelIndex()); |
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179 } |
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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 QT_END_HEADER |
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185 |
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186 #endif |