source: trunk/src/xmlpatterns/schema/qxsdvalidatinginstancereader_p.h@ 866

Last change on this file since 866 was 561, checked in by Dmitry A. Kuminov, 15 years ago

trunk: Merged in qt 4.6.1 sources.
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[556]1/****************************************************************************
2**
3** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
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5** Contact: Nokia Corporation ([email protected])
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41
42//
43// W A R N I N G
44// -------------
45//
46// This file is not part of the Qt API. It exists purely as an
47// implementation detail. This header file may change from version to
48// version without notice, or even be removed.
49//
50// We mean it.
51
52#ifndef Patternist_XsdValidatingInstanceReader_H
53#define Patternist_XsdValidatingInstanceReader_H
54
55#include "qxsdidchelper_p.h"
56#include "qxsdinstancereader_p.h"
57#include "qxsdstatemachine_p.h"
58#include "qxsdvalidatedxmlnodemodel_p.h"
59
60#include <QtCore/QStack>
61
62QT_BEGIN_HEADER
63
64QT_BEGIN_NAMESPACE
65
66class QXmlQuery;
67
68namespace QPatternist
69{
70 /**
71 * @short The validating schema instance reader.
72 *
73 * This class reads in a xml instance document from a QAbstractXmlNodeModel and
74 * validates it against a given xml schema.
75 *
76 * @ingroup Patternist_schema
77 * @author Tobias Koenig <[email protected]>
78 */
79 class XsdValidatingInstanceReader : public XsdInstanceReader
80 {
81 public:
82 typedef QExplicitlySharedDataPointer<XsdValidatingInstanceReader> Ptr;
83
84 /**
85 * Creates a new validating instance reader that reads the data from
86 * the given @p model.
87 *
88 * @param model The model the data shall be read from.
89 * @param documentUri The uri of the document the model is from.
90 * @param context The context that is used to report errors etc.
91 */
92 XsdValidatingInstanceReader(XsdValidatedXmlNodeModel *model, const QUrl &documentUri, const XsdSchemaContext::Ptr &context);
93
94 /**
95 * Adds a new @p schema to the pool of schemas that shall be used
96 * for validation.
97 * The schema is located at the given @p url.
98 */
99 void addSchema(const XsdSchema::Ptr &schema, const QUrl &url);
100
101 /**
102 * Reads and validates the instance document.
103 */
104 bool read();
105
106 private:
107 /**
108 * Loads a schema with the given @p targetNamespace from the given @p location
109 * and adds it to the pool of schemas that are used for validation.
110 *
111 * This method is used to load schemas defined in the xsi:schemaLocation or
112 * xsi:noNamespaceSchemaLocation attributes in the instance document.
113 */
114 bool loadSchema(const QString &targetNamespace, const QUrl &location);
115
116 /**
117 * Reports an error via the report context.
118 */
119 void error(const QString &msg) const;
120
121 /**
122 * Validates the current element tag of the instance document.
123 *
124 * @param hasStateMachine Used to remember whether this element represents the start tag
125 * of a complex type and therefor pushes a new state machine on the stack.
126 * @param element Used to remember which element has been validated in this step.
127 */
128 bool validate(bool &hasStateMachine, XsdElement::Ptr &element);
129
130 /**
131 * Validates the current tag of the instance document against the given element @p declaration.
132 *
133 * @param declaration The element declaration to validate against.
134 * @param hasStateMachine Used to remember whether this element represents the start tag
135 * of a complex type and therefor pushes a new state machine on the stack.
136 */
137 bool validateElement(const XsdElement::Ptr &declaration, bool &hasStateMachine);
138
139 /**
140 * Validates the current tag of the instance document against the given @p type of the element @p declaration.
141 *
142 * @param declaration The element declaration to validate against.
143 * @param type The type to validate against.
144 * @param isNilled Defines whether the element is nilled by the instance document.
145 * @param hasStateMachine Used to remember whether this element represents the start tag
146 * of a complex type and therefor pushes a new state machine on the stack.
147 *
148 * @note The @p type can differ from the element @p declaration type if the instance document has defined
149 * it via xsi:type attribute.
150 */
151 bool validateElementType(const XsdElement::Ptr &declaration, const SchemaType::Ptr &type, bool isNilled, bool &hasStateMachine);
152
153 /**
154 * Validates the current tag of the instance document against the given simple @p type of the element @p declaration.
155 *
156 * @param declaration The element declaration to validate against.
157 * @param type The type to validate against.
158 * @param isNilled Defines whether the element is nilled by the instance document.
159 *
160 * @note The @p type can differ from the element @p declaration type if the instance document has defined
161 * it via xsi:type attribute.
162 */
163 bool validateElementSimpleType(const XsdElement::Ptr &declaration, const SchemaType::Ptr &type, bool isNilled);
164
165 /**
166 * Validates the current tag of the instance document against the given complex @p type of the element @p declaration.
167 *
168 * @param declaration The element declaration to validate against.
169 * @param type The type to validate against.
170 * @param isNilled Defines whether the element is nilled by the instance document.
171 * @param hasStateMachine Used to remember whether this element represents the start tag
172 * of a complex type and therefor pushes a new state machine on the stack.
173 *
174 * @note The @p type can differ from the element @p declaration type if the instance document has defined
175 * it via xsi:type attribute.
176 */
177 bool validateElementComplexType(const XsdElement::Ptr &declaration, const SchemaType::Ptr &type, bool isNilled, bool &hasStateMachine);
178
179 /**
180 * Validates the given @p value against the attribute use @p declaration.
181 */
182 bool validateAttribute(const XsdAttributeUse::Ptr &declaration, const QString &value);
183
184 /**
185 * Validates the given @p value against the attribute @p declaration.
186 */
187 bool validateAttribute(const XsdAttribute::Ptr &declaration, const QString &value);
188
189 /**
190 * Validates the given @p attributeName against the @p wildcard.
191 */
192 bool validateAttributeWildcard(const QXmlName &attributeName, const XsdWildcard::Ptr &wildcard);
193
194 /**
195 * Validates the identity constraints of an @p element.
196 */
197 bool validateIdentityConstraint(const XsdElement::Ptr &element, const QXmlItem &currentItem);
198
199 /**
200 * Validates the <em>unique</em> identity @p constraint of the @p element.
201 */
202 bool validateUniqueIdentityConstraint(const XsdElement::Ptr &element, const XsdIdentityConstraint::Ptr &constraint, const TargetNode::Set &qualifiedNodeSet);
203
204 /**
205 * Validates the <em>key</em> identity @p constraint of the @p element.
206 */
207 bool validateKeyIdentityConstraint(const XsdElement::Ptr &element, const XsdIdentityConstraint::Ptr &constraint, const TargetNode::Set &targetNodeSet, const TargetNode::Set &qualifiedNodeSet);
208
209 /**
210 * Validates the <em>keyref</em> identity @p constraint of the @p element.
211 */
212 bool validateKeyRefIdentityConstraint(const XsdElement::Ptr &element, const XsdIdentityConstraint::Ptr &constraint, const TargetNode::Set &qualifiedNodeSet);
213
214 /**
215 * Selects two sets of nodes that match the given identity @p constraint.
216 *
217 * @param element The element the identity constraint belongs to.
218 * @param currentItem The current element that will be used as focus for the XQuery.
219 * @param constraint The constraint (selector and fields) that describe the two sets.
220 * @param targetNodeSet The target node set as defined by the schema specification.
221 * @param qualifiedNodeSet The qualified node set as defined by the schema specification.
222 */
223 bool selectNodeSets(const XsdElement::Ptr &element, const QXmlItem &currentItem, const XsdIdentityConstraint::Ptr &constraint, TargetNode::Set &targetNodeSet, TargetNode::Set &qualifiedNodeSet);
224
225 /**
226 * Creates an QXmlQuery object with the defined @p namespaceBindings that has the @p contextNode as focus
227 * and will execute @p query.
228 */
229 QXmlQuery createXQuery(const QList<QXmlName> &namespaceBindings, const QXmlItem &contextNode, const QString &query) const;
230
231 /**
232 * Returns the element declaration with the given @p name from the pool of all schemas.
233 */
234 XsdElement::Ptr elementByName(const QXmlName &name) const;
235
236 /**
237 * Returns the attribute declaration with the given @p name from the pool of all schemas.
238 */
239 XsdAttribute::Ptr attributeByName(const QXmlName &name) const;
240
241 /**
242 * Returns the type declaration with the given @p name from the pool of all schemas.
243 */
244 SchemaType::Ptr typeByName(const QXmlName &name) const;
245
246 /**
247 * Adds the ID/IDREF binding to the validated model and checks for duplicates.
248 */
249 void addIdIdRefBinding(const QString &id, const NamedSchemaComponent::Ptr &binding);
250
251 /**
252 * Helper method that reads an attribute of type xs:QName and does
253 * syntax checking.
254 */
255 QString qNameAttribute(const QXmlName &attributeName);
256
257 /**
258 * Returns the xs:anyType that is used to build up the state machine.
259 * We need that as the BuiltinTypes::xsAnyType is not a XsdComplexType.
260 */
261 XsdComplexType::Ptr anyType();
262
263 /**
264 * Helper method that creates a state machine for the given @p particle
265 * and pushes it on the state machine stack.
266 */
267 void createAndPushStateMachine(const XsdParticle::Ptr &particle);
268
269 typedef QHash<QUrl, QStringList> MergedSchemas;
270 typedef QHashIterator<QUrl, QStringList> MergedSchemasIterator;
271
272 XsdValidatedXmlNodeModel::Ptr m_model;
273 MergedSchemas m_mergedSchemas;
274 XsdSchema::Ptr m_schema;
275 const NamePool::Ptr m_namePool;
276 const QXmlName m_xsiNilName;
277 const QXmlName m_xsiTypeName;
278 const QXmlName m_xsiSchemaLocationName;
279 const QXmlName m_xsiNoNamespaceSchemaLocationName;
280
281 QStack<XsdStateMachine<XsdTerm::Ptr> > m_stateMachines;
282 QUrl m_documentUri;
283 XsdComplexType::Ptr m_anyType;
284 QSet<QString> m_processedNamespaces;
285 QSet<QString> m_processedSchemaLocations;
286 QSet<QString> m_idRefs;
287 QHash<QXmlName, TargetNode::Set> m_idcKeys;
288 SchemaType::Ptr m_idRefsType;
289 };
290}
291
292QT_END_NAMESPACE
293
294QT_END_HEADER
295
296#endif
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