File indexing completed on 2024-12-08 03:45:04

 /*
     This file is part of the syndication library
     SPDX-FileCopyrightText: 2006 Frank Osterfeld <osterfeld@kde.org>
 
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #ifndef SYNDICATION_RDF_MODEL_P_H
 #define SYNDICATION_RDF_MODEL_P_H
 
 #include "literal.h"
 #include "model.h"
 #include "nodevisitor.h"
 #include "property.h"
 #include "rdfvocab.h"
 #include "resource.h"
 #include "sequence.h"
 #include "statement.h"
 
 #include <QHash>
 #include <QList>
 #include <QString>
 
 namespace Syndication
 {
 namespace RDF
 {
 class SYNDICATION_NO_EXPORT Model::ModelPrivate
 {
 public:
     long id;
     static long idCounter;
     LiteralPtr nullLiteral;
     PropertyPtr nullProperty;
     ResourcePtr nullResource;
     StatementPtr nullStatement;
     QHash<QString, StatementPtr> statements;
     QHash<QString, QList<StatementPtr>> stmtsBySubject;
 
     QHash<int, NodePtr> nodes;
     QHash<QString, ResourcePtr> resources;
     QHash<QString, PropertyPtr> properties;
     QHash<QString, SequencePtr> sequences;
     bool initialized;
 
     class AddToHashesVisitor;
 
     ModelPrivate()
         : id(idCounter++)
     {
         addToHashesVisitor = new AddToHashesVisitor(this);
         initialized = false;
     }
 
     ~ModelPrivate()
     {
         delete addToHashesVisitor;
     }
 
     bool operator==(const ModelPrivate &other) const
     {
         return id == other.id;
     }
 
     class AddToHashesVisitor : public NodeVisitor
     {
     public:
         explicit AddToHashesVisitor(ModelPrivate *parent)
             : p(parent)
         {
         }
 
         bool visitResource(ResourcePtr res) override
         {
             visitNode(res);
             p->resources[res->uri()] = res;
             return true;
         }
 
         bool visitSequence(SequencePtr seq) override
         {
             visitResource(seq);
             p->sequences[seq->uri()] = seq;
             return true;
         }
 
         bool visitProperty(PropertyPtr prop) override
         {
             visitResource(prop);
             p->properties[prop->uri()] = prop;
             return true;
         }
 
         bool visitNode(NodePtr node) override
         {
             p->nodes[node->id()] = node;
             return true;
         }
 
         ModelPrivate *p;
     };
 
     AddToHashesVisitor *addToHashesVisitor;
 
     bool resourceHasProperty(const Resource *resource, PropertyPtr property) const;
 
     StatementPtr resourceProperty(const Resource *resource, PropertyPtr property) const;
 
     QList<StatementPtr> resourceProperties(const Resource *resource, PropertyPtr property) const;
 
     NodePtr nodeByID(uint id) const;
 
     ResourcePtr resourceByID(uint id) const;
 
     PropertyPtr propertyByID(uint id) const;
 
     LiteralPtr literalByID(uint id) const;
 
     void addToHashes(NodePtr node)
     {
         addToHashesVisitor->visit(node);
     }
 
     void addToHashes(StatementPtr stmt, const QString &key)
     {
         statements[key] = stmt;
         stmtsBySubject[stmt->subject()->uri()].append(stmt);
     }
 
     void removeFromHashes(const QString &key)
     {
         StatementPtr stmt = statements[key];
         if (stmt) {
             stmtsBySubject[stmt->subject()->uri()].removeAll(stmt);
         }
         statements.remove(key);
     }
 
     void init(const QSharedPointer<ModelPrivate> &sharedThis)
     {
         if (!initialized) {
             Model m;
             m.d = sharedThis;
             nullLiteral = LiteralPtr(new Literal());
             nullLiteral->setModel(m);
             nullProperty = PropertyPtr(new Property());
             nullProperty->setModel(m);
             nullResource = ResourcePtr(new Resource());
             nullResource->setModel(m);
             nullStatement = StatementPtr(new Statement());
             initialized = true;
         }
     }
 
 private:
     Q_DISABLE_COPY(ModelPrivate)
 };
 
 } // namespace RDF
 } // namespace Syndication
 
 #endif // SYNDICATION_RDF_MODEL_P_H