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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 // |
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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 QXMLQUERY_P_H |
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53 #define QXMLQUERY_P_H |
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54 |
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55 #include <QAbstractMessageHandler> |
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56 #include <QAbstractUriResolver> |
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57 #include <QPointer> |
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58 #include <QSourceLocation> |
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59 #include <QUrl> |
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60 #include <QVariant> |
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61 #include <QXmlName> |
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62 #include <QXmlNamePool> |
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63 #include <QXmlQuery> |
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64 |
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65 #include "qacceltreebuilder_p.h" |
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66 #include "qacceltreeresourceloader_p.h" |
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67 #include "qcoloringmessagehandler_p.h" |
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68 #include "qcommonsequencetypes_p.h" |
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69 #include "qexpressionfactory_p.h" |
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70 #include "qfocus_p.h" |
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71 #include "qfunctionfactorycollection_p.h" |
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72 #include "qgenericdynamiccontext_p.h" |
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73 #include "qgenericstaticcontext_p.h" |
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74 #include "qnamepool_p.h" |
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75 #include "qnetworkaccessdelegator_p.h" |
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76 #include "qreferencecountedvalue_p.h" |
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77 #include "qresourcedelegator_p.h" |
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78 #include "qstaticfocuscontext_p.h" |
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79 #include "quriloader_p.h" |
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80 #include "qvariableloader_p.h" |
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81 |
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82 QT_BEGIN_NAMESPACE |
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83 |
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84 class QXmlQueryPrivate |
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85 { |
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86 public: |
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87 |
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88 inline QXmlQueryPrivate(const QXmlNamePool &np = QXmlNamePool()) : namePool(np) |
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89 , messageHandler(0) |
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90 , uriResolver(0) |
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91 , queryLanguage(QXmlQuery::XQuery10) |
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92 , m_networkAccessDelegator(new QPatternist::NetworkAccessDelegator(0, 0)) |
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93 { |
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94 m_networkAccessDelegator->m_variableURIManager = new QPatternist::URILoader(ownerObject(), namePool.d, variableLoader()); |
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95 } |
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96 |
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97 void detach() |
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98 { |
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99 if(m_variableLoader) |
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100 m_variableLoader = QPatternist::VariableLoader::Ptr(new QPatternist::VariableLoader(namePool.d, m_variableLoader)); |
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101 |
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102 delete m_networkAccessDelegator->m_variableURIManager; |
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103 m_networkAccessDelegator->m_variableURIManager = new QPatternist::URILoader(ownerObject(), namePool.d, m_variableLoader); |
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104 |
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105 if(m_resourceLoader) |
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106 { |
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107 const QPatternist::AccelTreeResourceLoader::Ptr nev(new QPatternist::AccelTreeResourceLoader(namePool.d, |
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108 m_networkAccessDelegator)); |
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109 m_resourceLoader = QPatternist::ResourceLoader::Ptr(new QPatternist::ResourceDelegator(m_resourceLoader->deviceURIs(), |
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110 m_resourceLoader, |
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111 nev)); |
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112 } |
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113 } |
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114 |
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115 bool isValid() |
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116 { |
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117 return expression(); |
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118 } |
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119 |
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120 inline void recompileRequired() |
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121 { |
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122 m_expr.reset(); |
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123 } |
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124 |
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125 inline QPatternist::VariableLoader::Ptr variableLoader() |
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126 { |
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127 if(!m_variableLoader) |
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128 m_variableLoader = QPatternist::VariableLoader::Ptr(new QPatternist::VariableLoader(namePool.d)); |
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129 |
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130 return m_variableLoader; |
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131 } |
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132 |
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133 inline QPatternist::GenericStaticContext::Ptr staticContext() |
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134 { |
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135 if(m_staticContext && m_expr) |
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136 return m_staticContext; |
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137 /* Else, re-create the staticContext. */ |
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138 |
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139 if(!messageHandler) |
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140 messageHandler = new QPatternist::ColoringMessageHandler(ownerObject()); |
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141 |
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142 if(!m_functionFactory) |
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143 { |
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144 if(queryLanguage == QXmlQuery::XSLT20) |
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145 m_functionFactory = QPatternist::FunctionFactoryCollection::xslt20Factory(namePool.d); |
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146 else |
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147 m_functionFactory = QPatternist::FunctionFactoryCollection::xpath20Factory(namePool.d); |
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148 } |
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149 |
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150 const QPatternist::GenericStaticContext::Ptr genericStaticContext(new QPatternist::GenericStaticContext(namePool.d, |
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151 messageHandler, |
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152 queryURI, |
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153 m_functionFactory, |
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154 queryLanguage)); |
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155 genericStaticContext->setResourceLoader(resourceLoader()); |
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156 |
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157 genericStaticContext->setExternalVariableLoader(variableLoader()); |
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158 |
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159 m_staticContext = genericStaticContext; |
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160 |
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161 if(!contextItem.isNull()) |
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162 m_staticContext = QPatternist::StaticContext::Ptr(new QPatternist::StaticFocusContext(QPatternist::AtomicValue::qtToXDMType(contextItem), m_staticContext)); |
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163 else if( queryLanguage == QXmlQuery::XmlSchema11IdentityConstraintField |
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164 || queryLanguage == QXmlQuery::XmlSchema11IdentityConstraintSelector |
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165 || queryLanguage == QXmlQuery::XPath20) |
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166 m_staticContext = QPatternist::StaticContext::Ptr(new QPatternist::StaticFocusContext(QPatternist::BuiltinTypes::node, m_staticContext)); |
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167 |
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168 for (int i = 0; i < m_additionalNamespaceBindings.count(); ++i) { |
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169 m_staticContext->namespaceBindings()->addBinding(m_additionalNamespaceBindings.at(i)); |
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170 } |
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171 |
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172 return m_staticContext; |
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173 } |
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174 |
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175 inline QPatternist::DynamicContext::Ptr dynamicContext(QAbstractXmlReceiver *const callback = 0) |
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176 { |
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177 const QPatternist::StaticContext::Ptr statContext(staticContext()); |
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178 Q_ASSERT(statContext); |
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179 |
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180 QPatternist::GenericDynamicContext::Ptr dynContext(new QPatternist::GenericDynamicContext(namePool.d, statContext->messageHandler(), |
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181 statContext->sourceLocations())); |
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182 |
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183 QPatternist::AutoPtr<QPatternist::NodeBuilder> nodeBuilder(new QPatternist::AccelTreeBuilder<false>(QUrl(), QUrl(), namePool.d, |
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184 dynContext.data())); |
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185 dynContext->setNodeBuilder(nodeBuilder); |
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186 |
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187 dynContext->setResourceLoader(statContext->resourceLoader()); |
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188 dynContext->setExternalVariableLoader(statContext->externalVariableLoader()); |
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189 dynContext->setUriResolver(uriResolver); |
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190 |
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191 if(callback) |
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192 dynContext->setOutputReceiver(callback); |
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193 |
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194 if(contextItem.isNull()) |
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195 return dynContext; |
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196 else |
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197 { |
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198 QPatternist::DynamicContext::Ptr focus(new QPatternist::Focus(dynContext)); |
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199 QPatternist::Item::Iterator::Ptr it(QPatternist::makeSingletonIterator(QPatternist::Item::fromPublic(contextItem))); |
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200 it->next(); |
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201 focus->setFocusIterator(it); |
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202 return focus; |
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203 } |
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204 } |
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205 |
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206 inline QPatternist::AccelTreeResourceLoader::Ptr resourceLoader() |
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207 { |
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208 if(!m_resourceLoader) |
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209 m_resourceLoader = (new QPatternist::AccelTreeResourceLoader(namePool.d, m_networkAccessDelegator)); |
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210 |
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211 return m_resourceLoader; |
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212 } |
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213 |
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214 void setRequiredType(const QPatternist::SequenceType::Ptr &seqType) |
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215 { |
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216 Q_ASSERT(seqType); |
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217 if(!m_requiredType || m_requiredType->is(seqType)) |
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218 return; |
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219 |
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220 m_requiredType = seqType; |
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221 m_staticContext.reset(); |
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222 } |
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223 |
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224 QPatternist::SequenceType::Ptr requiredType() |
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225 { |
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226 if(m_requiredType) |
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227 return m_requiredType; |
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228 else |
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229 { |
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230 m_requiredType = QPatternist::CommonSequenceTypes::ZeroOrMoreItems; |
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231 return m_requiredType; |
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232 } |
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233 } |
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234 |
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235 QPatternist::Expression::Ptr expression(QIODevice *const queryDevice = 0) |
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236 { |
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237 if(m_expr && !queryDevice) |
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238 return m_expr; |
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239 |
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240 /* If we need to update, but we don't have any source code, we can |
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241 * never create an Expression. */ |
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242 if(!queryDevice) |
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243 return QPatternist::Expression::Ptr(); |
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244 |
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245 try |
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246 { |
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247 /* The static context has source locations, and they need to be |
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248 * updated to the new query. */ |
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249 m_staticContext.reset(); |
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250 |
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251 if(!m_expressionFactory) |
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252 m_expressionFactory = QPatternist::ExpressionFactory::Ptr(new QPatternist::ExpressionFactory()); |
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253 |
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254 m_expr = m_expressionFactory->createExpression(queryDevice, staticContext(), |
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255 queryLanguage, |
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256 requiredType(), |
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257 queryURI, |
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258 initialTemplateName); |
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259 } |
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260 catch(const QPatternist::Exception) |
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261 { |
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262 m_expr.reset(); |
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263 |
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264 /* We don't call m_staticContext.reset() because it shouldn't be |
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265 * necessary, since m_staticContext is changed when the expression |
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266 * is changed. */ |
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267 } |
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268 |
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269 return m_expr; |
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270 } |
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271 |
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272 inline void addAdditionalNamespaceBinding(const QXmlName &binding) |
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273 { |
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274 m_additionalNamespaceBindings.append(binding); |
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275 } |
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276 |
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277 QXmlNamePool namePool; |
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278 QPointer<QAbstractMessageHandler> messageHandler; |
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279 /** |
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280 * Must be absolute and valid. |
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281 */ |
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282 QUrl queryURI; |
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283 const QAbstractUriResolver * uriResolver; |
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284 QXmlItem contextItem; |
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285 QXmlName initialTemplateName; |
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286 |
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287 inline void setExpressionFactory(const QPatternist::ExpressionFactory::Ptr &expr) |
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288 { |
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289 m_expressionFactory = expr; |
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290 } |
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291 |
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292 QXmlQuery::QueryLanguage queryLanguage; |
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293 QPointer<QNetworkAccessManager> userNetworkManager; |
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294 |
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295 inline QObject *ownerObject() |
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296 { |
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297 if(!m_owner) |
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298 m_owner = new QPatternist::ReferenceCountedValue<QObject>(new QObject()); |
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299 |
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300 return m_owner->value; |
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301 } |
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302 |
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303 QPatternist::ExpressionFactory::Ptr m_expressionFactory; |
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304 QPatternist::StaticContext::Ptr m_staticContext; |
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305 QPatternist::VariableLoader::Ptr m_variableLoader; |
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306 QPatternist::DeviceResourceLoader::Ptr m_resourceLoader; |
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307 /** |
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308 * This is the AST for the query. |
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309 */ |
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310 QPatternist::Expression::Ptr m_expr; |
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311 QPatternist::ReferenceCountedValue<QObject>::Ptr m_owner; |
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312 |
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313 /** |
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314 * This is our effective network manager, that we end up using. The one the |
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315 * user sets is userNetworkManager. |
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316 */ |
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317 QPatternist::SequenceType::Ptr m_requiredType; |
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318 QPatternist::FunctionFactory::Ptr m_functionFactory; |
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319 QPatternist::NetworkAccessDelegator::Ptr m_networkAccessDelegator; |
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320 |
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321 QList<QXmlName> m_additionalNamespaceBindings; |
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322 }; |
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323 |
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324 QT_END_NAMESPACE |
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325 |
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326 QT_END_HEADER |
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327 |
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328 #endif |