File indexing completed on 2024-04-14 03:58:28

 /*
     This file is part of the syndication library
     SPDX-FileCopyrightText: 2006 Frank Osterfeld <osterfeld@kde.org>
 
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #include "statement.h"
 #include "literal.h"
 #include "model.h"
 #include "model_p.h"
 #include "property.h"
 #include "resource.h"
 
 #include <QString>
 #include <QWeakPointer>
 
 namespace Syndication
 {
 namespace RDF
 {
 class SYNDICATION_NO_EXPORT Statement::StatementPrivate
 {
 public:
     uint subjectID;
     uint predicateID;
     uint objectID;
     QWeakPointer<Model::ModelPrivate> model;
 
     bool operator==(const StatementPrivate &other) const
     {
         // FIXME: use better check that works also with multiple models
         return subjectID == other.subjectID && predicateID == other.predicateID && objectID == other.objectID;
     }
 };
 
 Statement::Statement()
     : d(new StatementPrivate)
 {
     d->subjectID = 0;
     d->predicateID = 0;
     d->objectID = 0;
 }
 
 Statement::Statement(const Statement &other)
 {
     d = other.d;
 }
 
 Statement::Statement(ResourcePtr subject, PropertyPtr predicate, NodePtr object)
     : d(new StatementPrivate)
 {
     d->model = subject->model().d;
     d->subjectID = subject->id();
     d->predicateID = predicate->id();
     d->objectID = object->id();
 }
 
 Statement::~Statement()
 {
 }
 
 Statement &Statement::operator=(const Statement &other)
 {
     d = other.d;
     return *this;
 }
 
 bool Statement::operator==(const Statement &other) const
 {
     if (!d || !other.d) {
         return d == other.d;
     }
 
     return *d == *(other.d);
 }
 
 bool Statement::isNull() const
 {
     return d->subjectID == 0;
 }
 
 ResourcePtr Statement::subject() const
 {
     const QSharedPointer<Model::ModelPrivate> m = d ? d->model.toStrongRef() : QSharedPointer<Model::ModelPrivate>();
     return m ? m->resourceByID(d->subjectID) : ResourcePtr(new Resource);
 }
 
 PropertyPtr Statement::predicate() const
 {
     const QSharedPointer<Model::ModelPrivate> m = d ? d->model.toStrongRef() : QSharedPointer<Model::ModelPrivate>();
     return m ? m->propertyByID(d->predicateID) : PropertyPtr(new Property());
 }
 
 NodePtr Statement::object() const
 {
     const QSharedPointer<Model::ModelPrivate> m = d ? d->model.toStrongRef() : QSharedPointer<Model::ModelPrivate>();
     return m ? m->nodeByID(d->objectID) : NodePtr(LiteralPtr(new Literal()));
 }
 
 ResourcePtr Statement::asResource() const
 {
     const QSharedPointer<Model::ModelPrivate> m = d ? d->model.toStrongRef() : QSharedPointer<Model::ModelPrivate>();
 
     if (isNull() || !m || !m->nodeByID(d->objectID)->isResource()) {
         return ResourcePtr(new Resource);
     }
 
     return m->resourceByID(d->objectID);
 }
 
 QString Statement::asString() const
 {
     if (isNull()) {
         return QString();
     }
 
     const QSharedPointer<Model::ModelPrivate> m = d ? d->model.toStrongRef() : QSharedPointer<Model::ModelPrivate>();
     return m ? m->nodeByID(d->objectID)->text() : QString();
 }
 
 } // namespace RDF
 } // namespace Syndication