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Diffstat (limited to 'src/xmlpatterns/schema/qxsdvalidatinginstancereader_p.h')
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diff --git a/src/xmlpatterns/schema/qxsdvalidatinginstancereader_p.h b/src/xmlpatterns/schema/qxsdvalidatinginstancereader_p.h new file mode 100644 index 0000000..8ea4d28 --- /dev/null +++ b/src/xmlpatterns/schema/qxsdvalidatinginstancereader_p.h @@ -0,0 +1,296 @@ +/**************************************************************************** +** +** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtXmlPatterns of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at http://www.qtsoftware.com/contact. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. + +#ifndef Patternist_XsdValidatingInstanceReader_H +#define Patternist_XsdValidatingInstanceReader_H + +#include "qxsdidchelper_p.h" +#include "qxsdinstancereader_p.h" +#include "qxsdstatemachine_p.h" +#include "qxsdvalidatedxmlnodemodel_p.h" + +#include <QtCore/QStack> + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +class QXmlQuery; + +namespace QPatternist +{ + /** + * @short The validating schema instance reader. + * + * This class reads in a xml instance document from a QAbstractXmlNodeModel and + * validates it against a given xml schema. + * + * @ingroup Patternist_schema + * @author Tobias Koenig <tobias.koenig@trolltech.com> + */ + class XsdValidatingInstanceReader : public XsdInstanceReader + { + public: + typedef QExplicitlySharedDataPointer<XsdValidatingInstanceReader> Ptr; + + /** + * Creates a new validating instance reader that reads the data from + * the given @p model. + * + * @param model The model the data shall be read from. + * @param documentUri The uri of the document the model is from. + * @param context The context that is used to report errors etc. + */ + XsdValidatingInstanceReader(XsdValidatedXmlNodeModel *model, const QUrl &documentUri, const XsdSchemaContext::Ptr &context); + + /** + * Adds a new @p schema to the pool of schemas that shall be used + * for validation. + * The schema is located at the given @p url. + */ + void addSchema(const XsdSchema::Ptr &schema, const QUrl &url); + + /** + * Reads and validates the instance document. + */ + bool read(); + + private: + /** + * Loads a schema with the given @p targetNamespace from the given @p location + * and adds it to the pool of schemas that are used for validation. + * + * This method is used to load schemas defined in the xsi:schemaLocation or + * xsi:noNamespaceSchemaLocation attributes in the instance document. + */ + bool loadSchema(const QString &targetNamespace, const QUrl &location); + + /** + * Reports an error via the report context. + */ + void error(const QString &msg) const; + + /** + * Validates the current element tag of the instance document. + * + * @param hasStateMachine Used to remember whether this element represents the start tag + * of a complex type and therefor pushes a new state machine on the stack. + * @param element Used to remember which element has been validated in this step. + */ + bool validate(bool &hasStateMachine, XsdElement::Ptr &element); + + /** + * Validates the current tag of the instance document against the given element @p declaration. + * + * @param declaration The element declaration to validate against. + * @param hasStateMachine Used to remember whether this element represents the start tag + * of a complex type and therefor pushes a new state machine on the stack. + */ + bool validateElement(const XsdElement::Ptr &declaration, bool &hasStateMachine); + + /** + * Validates the current tag of the instance document against the given @p type of the element @p declaration. + * + * @param declaration The element declaration to validate against. + * @param type The type to validate against. + * @param isNilled Defines whether the element is nilled by the instance document. + * @param hasStateMachine Used to remember whether this element represents the start tag + * of a complex type and therefor pushes a new state machine on the stack. + * + * @note The @p type can differ from the element @p declaration type if the instance document has defined + * it via xsi:type attribute. + */ + bool validateElementType(const XsdElement::Ptr &declaration, const SchemaType::Ptr &type, bool isNilled, bool &hasStateMachine); + + /** + * Validates the current tag of the instance document against the given simple @p type of the element @p declaration. + * + * @param declaration The element declaration to validate against. + * @param type The type to validate against. + * @param isNilled Defines whether the element is nilled by the instance document. + * + * @note The @p type can differ from the element @p declaration type if the instance document has defined + * it via xsi:type attribute. + */ + bool validateElementSimpleType(const XsdElement::Ptr &declaration, const SchemaType::Ptr &type, bool isNilled); + + /** + * Validates the current tag of the instance document against the given complex @p type of the element @p declaration. + * + * @param declaration The element declaration to validate against. + * @param type The type to validate against. + * @param isNilled Defines whether the element is nilled by the instance document. + * @param hasStateMachine Used to remember whether this element represents the start tag + * of a complex type and therefor pushes a new state machine on the stack. + * + * @note The @p type can differ from the element @p declaration type if the instance document has defined + * it via xsi:type attribute. + */ + bool validateElementComplexType(const XsdElement::Ptr &declaration, const SchemaType::Ptr &type, bool isNilled, bool &hasStateMachine); + + /** + * Validates the given @p value against the attribute use @p declaration. + */ + bool validateAttribute(const XsdAttributeUse::Ptr &declaration, const QString &value); + + /** + * Validates the given @p value against the attribute @p declaration. + */ + bool validateAttribute(const XsdAttribute::Ptr &declaration, const QString &value); + + /** + * Validates the given @p attributeName against the @p wildcard. + */ + bool validateAttributeWildcard(const QXmlName &attributeName, const XsdWildcard::Ptr &wildcard); + + /** + * Validates the identity constraints of an @p element. + */ + bool validateIdentityConstraint(const XsdElement::Ptr &element, const QXmlItem ¤tItem); + + /** + * Validates the <em>unique</em> identity @p constraint of the @p element. + */ + bool validateUniqueIdentityConstraint(const XsdElement::Ptr &element, const XsdIdentityConstraint::Ptr &constraint, const TargetNode::Set &qualifiedNodeSet); + + /** + * Validates the <em>key</em> identity @p constraint of the @p element. + */ + bool validateKeyIdentityConstraint(const XsdElement::Ptr &element, const XsdIdentityConstraint::Ptr &constraint, const TargetNode::Set &targetNodeSet, const TargetNode::Set &qualifiedNodeSet); + + /** + * Validates the <em>keyref</em> identity @p constraint of the @p element. + */ + bool validateKeyRefIdentityConstraint(const XsdElement::Ptr &element, const XsdIdentityConstraint::Ptr &constraint, const TargetNode::Set &qualifiedNodeSet); + + /** + * Selects two sets of nodes that match the given identity @p constraint. + * + * @param element The element the identity constraint belongs to. + * @param currentItem The current element that will be used as focus for the XQuery. + * @param constraint The constraint (selector and fields) that describe the two sets. + * @param targetNodeSet The target node set as defined by the schema specification. + * @param qualifiedNodeSet The qualified node set as defined by the schema specification. + */ + bool selectNodeSets(const XsdElement::Ptr &element, const QXmlItem ¤tItem, const XsdIdentityConstraint::Ptr &constraint, TargetNode::Set &targetNodeSet, TargetNode::Set &qualifiedNodeSet); + + /** + * Creates an QXmlQuery object with the defined @p namespaceBindings that has the @p contextNode as focus + * and will execute @p query. + */ + QXmlQuery createXQuery(const QList<QXmlName> &namespaceBindings, const QXmlItem &contextNode, const QString &query) const; + + /** + * Returns the element declaration with the given @p name from the pool of all schemas. + */ + XsdElement::Ptr elementByName(const QXmlName &name) const; + + /** + * Returns the attribute declaration with the given @p name from the pool of all schemas. + */ + XsdAttribute::Ptr attributeByName(const QXmlName &name) const; + + /** + * Returns the type declaration with the given @p name from the pool of all schemas. + */ + SchemaType::Ptr typeByName(const QXmlName &name) const; + + /** + * Adds the ID/IDREF binding to the validated model and checks for duplicates. + */ + void addIdIdRefBinding(const QString &id, const NamedSchemaComponent::Ptr &binding); + + /** + * Helper method that reads an attribute of type xs:QName and does + * syntax checking. + */ + QString qNameAttribute(const QXmlName &attributeName); + + /** + * Returns the xs:anyType that is used to build up the state machine. + * We need that as the BuiltinTypes::xsAnyType is not a XsdComplexType. + */ + XsdComplexType::Ptr anyType(); + + /** + * Helper method that creates a state machine for the given @p particle + * and pushes it on the state machine stack. + */ + void createAndPushStateMachine(const XsdParticle::Ptr &particle); + + typedef QHash<QUrl, QStringList> MergedSchemas; + typedef QHashIterator<QUrl, QStringList> MergedSchemasIterator; + + XsdValidatedXmlNodeModel::Ptr m_model; + MergedSchemas m_mergedSchemas; + XsdSchema::Ptr m_schema; + const NamePool::Ptr m_namePool; + const QXmlName m_xsiNilName; + const QXmlName m_xsiTypeName; + const QXmlName m_xsiSchemaLocationName; + const QXmlName m_xsiNoNamespaceSchemaLocationName; + + QStack<XsdStateMachine<XsdTerm::Ptr> > m_stateMachines; + QUrl m_documentUri; + XsdComplexType::Ptr m_anyType; + QSet<QString> m_processedNamespaces; + QSet<QString> m_processedSchemaLocations; + QSet<QString> m_idRefs; + QHash<QXmlName, TargetNode::Set> m_idcKeys; + SchemaType::Ptr m_idRefsType; + }; +} + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif |