/usr/include/nepomuk/class.h is in kdelibs5-dev 4:4.13.0-0ubuntu1.
This file is owned by root:root, with mode 0o644.
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Copyright (c) 2007-2009 Sebastian Trueg <trueg@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef _NEPOMUK_CLASS_H_
#define _NEPOMUK_CLASS_H_
#include <QtCore/QList>
#include <QtCore/QUrl>
#include <QtCore/QString>
#include <QtCore/QSharedData>
#include "entity.h"
#include "nepomuk_export.h"
namespace Nepomuk {
namespace Types {
class Property;
/**
* \class Class class.h Nepomuk/Types/Class
*
* \brief A Class is a resource of type rdf:Class.
*
* Class instances are explicitly shared. Two instances created
* with the same uri reference the same data.
*
* While Resource objects can be changed Class instances are considered
* to be static and never changed during their lifetime.
*
* \author Sebastian Trueg <trueg@kde.org>
*/
class NEPOMUK_EXPORT Class : public Entity
{
friend class ClassPrivate;
public:
/**
* Default constructor. Creates an empty Class.
*/
Class();
/**
* Create the class referred to by \p uri.
* The result is either a valid class which could be loaded from the
* Nepomuk store or a simple class which only contains the uri.
*
* Be aware that the data is only loaded once read.
*
* Subsequent calls result in a simple hash lookup of cached data.
*/
Class( const QUrl& uri );
/**
* Default copy constructor
*/
Class( const Class& );
/**
* Destructor
*/
~Class();
/**
* Copy operator.
*/
Class& operator=( const Class& );
/**
* A Property has a certain range which is a Class or a Literal.
* \return A list of all properties that have this Class as a range.
* \sa Property::range()
*/
QList<Property> rangeOf();
/**
* A Property has a certain range which is a Class or a Literal.
* \return A list of all properties that have this Class as a range.
* \sa Property::range()
*
* Const version.
*
* \since 4.4
*/
QList<Property> rangeOf() const;
/**
* A Property has a certain domain which is a Class.
* \return A list of all properties that have this Class as a domain.
* \sa Property::domain()
*/
QList<Property> domainOf();
/**
* A Property has a certain domain which is a Class.
* \return A list of all properties that have this Class as a domain.
* \sa Property::domain()
*
* Const version.
*
* \since 4.4
*/
QList<Property> domainOf() const;
/**
* Search for a property in the class by its name.
* \param name The name of the property.
* \return the Property object identified by name or an invalid property if it could not be found.
*/
Property findPropertyByName( const QString& name );
/**
* Search for a property in the class by its name.
* \param name The name of the property.
* \return the Property object identified by name or an invalid property if it could not be found.
*
* Const version.
*
* \since 4.4
*/
Property findPropertyByName( const QString& name ) const;
/**
* Search for a property in the class by its label.
* \param label The label of the property (i.e. rdfs:label)
* \param language The language in which the label was specified. If empty the default rdfs:label
* is returned.
* \return the Property object identified by label or an invalid property if it could not be found.
*/
Property findPropertyByLabel( const QString& label, const QString& language = QString() );
/**
* Search for a property in the class by its label.
* \param label The label of the property (i.e. rdfs:label)
* \param language The language in which the label was specified. If empty the default rdfs:label
* is returned.
* \return the Property object identified by label or an invalid property if it could not be found.
*
* Const version.
*
* \since 4.4
*/
Property findPropertyByLabel( const QString& label, const QString& language = QString() ) const;
/**
* Each class can have multiple parent classes. This method
* provides a list of all direct parents.
* \return A list of all parent classes of this class.
* If the list is emppty it means that the class has no direct
* parents, i.e. it is derived from rdf:Resource.
* \sa allParentClasses()
*/
QList<Class> parentClasses();
/**
* Each class can have multiple parent classes. This method
* provides a list of all direct parents.
* \return A list of all parent classes of this class.
* If the list is emppty it means that the class has no direct
* parents, i.e. it is derived from rdf:Resource.
* \sa allParentClasses()
*
* Const version.
*
* \since 4.4
*/
QList<Class> parentClasses() const;
/**
* \return A list of all classes that have this class as a parent.
* Be aware that this list can never be final since other ontologies
* that have not been loaded yet may contain classes that are derived
* from this class.
*/
QList<Class> subClasses();
/**
* \return A list of all classes that have this class as a parent.
* Be aware that this list can never be final since other ontologies
* that have not been loaded yet may contain classes that are derived
* from this class.
*
* Const version.
*
* \since 4.4
*/
QList<Class> subClasses() const;
/**
* Recursively determines all parent classes of this class, not
* only the direct ones.
* \return A list of parent classes of this class.
* \sa parentClasses()
*/
QList<Class> allParentClasses();
/**
* Recursively determines all parent classes of this class, not
* only the direct ones.
* \return A list of parent classes of this class.
* \sa parentClasses()
*
* Const version.
*
* \since 4.4
*/
QList<Class> allParentClasses() const;
/**
* Recursively determines all sub classes of this class, not
* only the direct ones.
* \return A list of sub classes of this class.
* \sa subClasses()
*/
QList<Class> allSubClasses();
/**
* Recursively determines all sub classes of this class, not
* only the direct ones.
* \return A list of sub classes of this class.
* \sa subClasses()
*
* Const version.
*
* \since 4.4
*/
QList<Class> allSubClasses() const;
/**
* Check if a class inherits this class. This is a recursive method which
* does not only check direct child classes.
*
* \return true if other is derived from this class, false otherwise.
*/
bool isParentOf( const Class& other );
/**
* Check if a class inherits this class. This is a recursive method which
* does not only check direct child classes.
*
* \return true if other is derived from this class, false otherwise.
*
* Const version.
*
* \since 4.4
*/
bool isParentOf( const Class& other ) const;
/**
* Check if this class is derived from another class. This is a recursive method which
* does not only check direct child classes.
*
* \return true if this class is derived from other, false otherwise.
*/
bool isSubClassOf( const Class& other );
/**
* Check if this class is derived from another class. This is a recursive method which
* does not only check direct child classes.
*
* \return true if this class is derived from other, false otherwise.
*
* Const version.
*
* \since 4.4
*/
bool isSubClassOf( const Class& other ) const;
};
}
}
#ifndef DISABLE_NEPOMUK_LEGACY
namespace Nepomuk {
class Ontology;
class Property;
/**
* A Class is a resource of type rdf:Class.
*
* \deprecated in favor of Nepomuk::Types::Class
*/
class KDE_DEPRECATED NEPOMUK_EXPORT Class : public Entity
{
public:
/**
* Default constructor. Creates an empty Class.
*/
Class();
/**
* Default copy constructor
*/
Class( const Class& );
/**
* Destructor
*/
~Class();
Class& operator=( const Class& );
// an alternative would be: QList<Property> rangeOf() and QList<Property> domainOf()
QList<const Property*> allProperties() const;
/**
* Search for a property in the class by its name.
* \param name The name of the property.
* \return the Property object identified by name or 0 if the property could not be found.
*/
const Property* findPropertyByName( const QString& name ) const;
/**
* Search for a property in the class by its label.
* \param label The label of the property (i.e. rdfs:label)
* \param language The language in which the label was specified. If empty the default rdfs:label
* is returned.
* \return the Property object identified by label or 0 if the property could not be found.
*/
const Property* findPropertyByLabel( const QString& label, const QString& language = QString() ) const;
/**
* Search for a property in the class by its name.
* \param uri the URI of the property
* \return the Property object identified by uri or 0 if the property could not be found.
*/
const Property* findPropertyByUri( const QUrl& uri ) const;
/**
* Each class can have multiple parent classes.
* \return A list of all parent classes of this class.
* If the list is emppty it means that the class has no direct
* parents, i.e. it is derived from rdf:Resource.
*/
QList<const Class*> parentClasses() const;
/**
* \return A list of all classes that have this class as a parent.
* Be aware that this list can never be final since other ontologies
* that have not been loaded yet may contain classes that are derived
* from this class.
*/
QList<const Class*> subClasses() const;
/**
* Check if a class inherits this class. This is a recursive method which
* does not only check direct child classes.
*
* \return true if other is derived from this class, false otherwise.
*/
bool isParentOf( const Class* other ) const;
/**
* Check if this class is derived from another class. This is a recursive method which
* does not only check direct child classes.
*
* \return true if this class is derived from other, false otherwise.
*/
bool isSubClassOf( const Class* other ) const;
/**
* Loads a class actually including the whole ontology
* it is declared in.
*
* Dependancies are resolved automatically if possible.
*
* \return A Class object representing the class identified
* by uri or an invalid Class object if the resource identified
* by uri is either not a class or does not exist.
*/
static const Class* load( const QUrl& uri );
private:
class Private;
QSharedDataPointer<Private> d;
friend class OntologyManager;
};
}
#endif
#endif
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