| 1 | /* |
|---|---|
| 2 | This file is part of the syndication library |
| 3 | SPDX-FileCopyrightText: 2006 Frank Osterfeld <osterfeld@kde.org> |
| 4 | |
| 5 | SPDX-License-Identifier: LGPL-2.0-or-later |
| 6 | */ |
| 7 | |
| 8 | #include "statement.h" |
| 9 | #include "literal.h" |
| 10 | #include "model.h" |
| 11 | #include "model_p.h" |
| 12 | #include "property.h" |
| 13 | #include "resource.h" |
| 14 | |
| 15 | #include <QString> |
| 16 | #include <QWeakPointer> |
| 17 | |
| 18 | namespace Syndication |
| 19 | { |
| 20 | namespace RDF |
| 21 | { |
| 22 | class SYNDICATION_NO_EXPORT Statement::StatementPrivate |
| 23 | { |
| 24 | public: |
| 25 | uint subjectID; |
| 26 | uint predicateID; |
| 27 | uint objectID; |
| 28 | QWeakPointer<Model::ModelPrivate> model; |
| 29 | |
| 30 | bool operator==(const StatementPrivate &other) const |
| 31 | { |
| 32 | // FIXME: use better check that works also with multiple models |
| 33 | return subjectID == other.subjectID && predicateID == other.predicateID && objectID == other.objectID; |
| 34 | } |
| 35 | }; |
| 36 | |
| 37 | Statement::Statement() |
| 38 | : d(new StatementPrivate) |
| 39 | { |
| 40 | d->subjectID = 0; |
| 41 | d->predicateID = 0; |
| 42 | d->objectID = 0; |
| 43 | } |
| 44 | |
| 45 | Statement::Statement(const Statement &other) |
| 46 | { |
| 47 | d = other.d; |
| 48 | } |
| 49 | |
| 50 | Statement::Statement(ResourcePtr subject, PropertyPtr predicate, NodePtr object) |
| 51 | : d(new StatementPrivate) |
| 52 | { |
| 53 | d->model = subject->model().d; |
| 54 | d->subjectID = subject->id(); |
| 55 | d->predicateID = predicate->id(); |
| 56 | d->objectID = object->id(); |
| 57 | } |
| 58 | |
| 59 | Statement::~Statement() |
| 60 | { |
| 61 | } |
| 62 | |
| 63 | Statement &Statement::operator=(const Statement &other) |
| 64 | { |
| 65 | d = other.d; |
| 66 | return *this; |
| 67 | } |
| 68 | |
| 69 | bool Statement::operator==(const Statement &other) const |
| 70 | { |
| 71 | if (!d || !other.d) { |
| 72 | return d == other.d; |
| 73 | } |
| 74 | |
| 75 | return *d == *(other.d); |
| 76 | } |
| 77 | |
| 78 | bool Statement::isNull() const |
| 79 | { |
| 80 | return d->subjectID == 0; |
| 81 | } |
| 82 | |
| 83 | ResourcePtr Statement::subject() const |
| 84 | { |
| 85 | const QSharedPointer<Model::ModelPrivate> m = d ? d->model.toStrongRef() : QSharedPointer<Model::ModelPrivate>(); |
| 86 | return m ? m->resourceByID(id: d->subjectID) : ResourcePtr(new Resource); |
| 87 | } |
| 88 | |
| 89 | PropertyPtr Statement::predicate() const |
| 90 | { |
| 91 | const QSharedPointer<Model::ModelPrivate> m = d ? d->model.toStrongRef() : QSharedPointer<Model::ModelPrivate>(); |
| 92 | return m ? m->propertyByID(id: d->predicateID) : PropertyPtr(new Property()); |
| 93 | } |
| 94 | |
| 95 | NodePtr Statement::object() const |
| 96 | { |
| 97 | const QSharedPointer<Model::ModelPrivate> m = d ? d->model.toStrongRef() : QSharedPointer<Model::ModelPrivate>(); |
| 98 | return m ? m->nodeByID(id: d->objectID) : NodePtr(LiteralPtr(new Literal())); |
| 99 | } |
| 100 | |
| 101 | ResourcePtr Statement::asResource() const |
| 102 | { |
| 103 | const QSharedPointer<Model::ModelPrivate> m = d ? d->model.toStrongRef() : QSharedPointer<Model::ModelPrivate>(); |
| 104 | |
| 105 | if (isNull() || !m || !m->nodeByID(id: d->objectID)->isResource()) { |
| 106 | return ResourcePtr(new Resource); |
| 107 | } |
| 108 | |
| 109 | return m->resourceByID(id: d->objectID); |
| 110 | } |
| 111 | |
| 112 | QString Statement::asString() const |
| 113 | { |
| 114 | if (isNull()) { |
| 115 | return QString(); |
| 116 | } |
| 117 | |
| 118 | const QSharedPointer<Model::ModelPrivate> m = d ? d->model.toStrongRef() : QSharedPointer<Model::ModelPrivate>(); |
| 119 | return m ? m->nodeByID(id: d->objectID)->text() : QString(); |
| 120 | } |
| 121 | |
| 122 | } // namespace RDF |
| 123 | } // namespace Syndication |
| 124 |