/usr/include/nepomuk/property.h is in kdelibs5-dev 4:4.13.3-0ubuntu0.5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Copyright (c) 2007 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_PROPERTY_H_
#define _NEPOMUK_PROPERTY_H_
#include <QtCore/QList>
#include <QtCore/QUrl>
#include <QtCore/QString>
#include <QtCore/QVariant>
#include <QtCore/QSharedData>
#include "entity.h"
#include "nepomuk_export.h"
namespace Nepomuk {
namespace Types {
class Class;
class Literal;
/**
* \class Property property.h Nepomuk/Types/Property
*
* \brief A property is a resource of type rdf:Property which relates a domain
* with a range. The latter one can be a Literal or a Class.
*
* Property instances are explicitly shared. Two instances created
* with the same uri reference the same data.
*
* While Resource objects can be changed Property instances are considered
* to be static and never changed during their lifetime.
*
* \author Sebastian Trueg <trueg@kde.org>
*/
class NEPOMUK_EXPORT Property : public Entity
{
public:
/**
* Default constructor. Creates an empty Property.
*/
Property();
/**
* Create the property referred to by \p uri.
* The result is either a valid property which could be loaded from the
* Nepomuk store or a simple property 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.
*/
Property( const QUrl& uri );
/**
* Default copy constructor
*/
Property( const Property& );
/**
* Destructor
*/
~Property();
/**
* Copy operator.
*/
Property& operator=( const Property& );
/**
* Each property can have multiple parent properties.
* \return A list of all parent properties of this property.
* If the list is emppty it means that the property has no direct
* parents, i.e. it is derived from rdf:Resource.
*/
QList<Property> parentProperties();
/**
* Each property can have multiple parent properties.
* \return A list of all parent properties of this property.
* If the list is emppty it means that the property has no direct
* parents, i.e. it is derived from rdf:Resource.
*
* Const version
*
* \since 4.4
*/
QList<Property> parentProperties() const;
/**
* \return A list of all properties that have this property as a parent.
* Be aware that this list can never be final since other ontologies
* that have not been loaded yet may contain properties that are derived
* from this property.
*/
QList<Property> subProperties();
/**
* \return A list of all properties that have this property as a parent.
* Be aware that this list can never be final since other ontologies
* that have not been loaded yet may contain properties that are derived
* from this property.
*
* Const version
*
* \since 4.4
*/
QList<Property> subProperties() const;
/**
* The inverse property (nrl:inverseProperty).
* \return A Property instance representing the inverse property of this one
* or 0 if none was specified in the ontology.
*/
Property inverseProperty();
/**
* The inverse property (nrl:inverseProperty).
* \return A Property instance representing the inverse property of this one
* or 0 if none was specified in the ontology.
*
* Const version
*
* \since 4.4
*/
Property inverseProperty() const;
/**
* The range of the property.
* \return The range of the property or an invalid Class in case
* the range of this poperty is a literal.
* \sa literalRange
*/
Class range();
/**
* The range of the property.
* \return The range of the property or an invalid Class in case
* the range of this poperty is a literal.
* \sa literalRange
*
* Const version
*
* \since 4.4
*/
Class range() const;
/**
* If the rage of this property is a literal (i.e. range returns an invalid Class)
* this method provides the literal type.
*
* \returns the literal type of this property or an empty, invalid Literal
* if the range is a Class.
*
* \sa range
*/
Literal literalRangeType();
/**
* If the rage of this property is a literal (i.e. range returns an invalid Class)
* this method provides the literal type.
*
* \returns the literal type of this property or an empty, invalid Literal
* if the range is a Class.
*
* \sa range
*
* Const version
*
* \since 4.4
*/
Literal literalRangeType() const;
/**
* The domain of the property.
*/
Class domain();
/**
* The domain of the property.
*
* Const version
*
* \since 4.4
*/
Class domain() const;
/**
* The cardinality of this property as specified by nrl:cardinality.
*
* \return the cardinality of the property or -1 if none was set.
*/
int cardinality();
/**
* The cardinality of this property as specified by nrl:cardinality.
*
* \return the cardinality of the property or -1 if none was set.
*
* Const version
*
* \since 4.4
*/
int cardinality() const;
/**
* The minimum cardinality of this property as specified by nrl:minCardinality.
*
* \return the minimum cardinality of the property or -1 if none was set.
*/
int minCardinality();
/**
* The minimum cardinality of this property as specified by nrl:minCardinality.
*
* \return the minimum cardinality of the property or -1 if none was set.
*
* Const version
*
* \since 4.4
*/
int minCardinality() const;
/**
* The maximum cardinality of this property as specified by nrl:maxCardinality.
*
* \return the maximum cardinality of the property or -1 if none was set.
*/
int maxCardinality();
/**
* The maximum cardinality of this property as specified by nrl:maxCardinality.
*
* \return the maximum cardinality of the property or -1 if none was set.
*
* Const version
*
* \since 4.4
*/
int maxCardinality() const;
/**
* Check if a property inherits this property. This is a recursive method which
* does not only check direct child propertyes.
*
* \return true if other is derived from this property, false otherwise.
*/
bool isParentOf( const Property& other );
/**
* Check if a property inherits this property. This is a recursive method which
* does not only check direct child propertyes.
*
* \return true if other is derived from this property, false otherwise.
*
* Const version
*
* \since 4.4
*/
bool isParentOf( const Property& other ) const;
/**
* Check if this property is derived from another property. This is a recursive method which
* does not only check direct child propertyes.
*
* \return true if this property is derived from other, false otherwise.
*/
bool isSubPropertyOf( const Property& other );
/**
* Check if this property is derived from another property. This is a recursive method which
* does not only check direct child propertyes.
*
* \return true if this property is derived from other, false otherwise.
*
* Const version
*
* \since 4.4
*/
bool isSubPropertyOf( const Property& other ) const;
};
}
}
#ifndef DISABLE_NEPOMUK_LEGACY
namespace Nepomuk {
class Ontology;
class Class;
class Literal;
/**
* A property is a resource of type rdf:Property which relates a domain
* with a range. The latter one can be a literal in addition to a Class.
*
* \deprecated in favor of Nepomuk::Types::Property
*/
class KDE_DEPRECATED NEPOMUK_EXPORT Property : public Entity
{
public:
/**
* Default constructor. Creates an empty Property.
*/
Property();
/**
* Default copy constructor
*/
Property( const Property& );
/**
* Destructor
*/
~Property();
Property& operator=( const Property& );
/**
* Each property can have multiple parent properties.
* \return A list of all parent properties of this property.
* If the list is emppty it means that the property has no direct
* parents, i.e. it is derived from rdf:Resource.
*/
QList<const Property*> parentProperties() const;
/**
* \return A list of all properties that have this property as a parent.
* Be aware that this list can never be final since other ontologies
* that have not been loaded yet may contain properties that are derived
* from this property.
*/
QList<const Property*> parentOf() const;
/**
* The inverse property (nrl:inverseProperty).
* \return A Property instance representing the inverse property of this one
* or 0 if none was specified in the ontology.
*/
const Property* inverseProperty() const;
/**
* The range of the property.
* \return The range of the property or an invalid Class in case
* the range of this poperty is a literal.
* \sa literalRange
*/
const Class* range() const;
/**
* If the rage of this property is a literal (i.e. range returns 0)
* this method provides the literal type.
*
* \returns the literal type of this property or an empty, invalid Literal
* if the range is a Class.
*
* \sa range
*/
Literal literalRangeType() const;
/**
* The domain of the property.
*/
const Class* domain() const;
/**
* The cardinality of this property as specified by nrl:cardinality.
*
* \return the cardinality of the property or -1 if none was set.
*/
int cardinality() const;
/**
* The minimum cardinality of this property as specified by nrl:minCardinality.
*
* \return the minimum cardinality of the property or -1 if none was set.
*/
int minCardinality() const;
/**
* The maximum cardinality of this property as specified by nrl:maxCardinality.
*
* \return the maximum cardinality of the property or -1 if none was set.
*/
int maxCardinality() const;
// QString unit() const;
/**
* Loads a property actually including the whole ontology
* it is declared in.
*
* Dependancies are resolved automatically if possible.
*
* \return A property object representing the property identified
* by uri or an invalid Property object if the resource identified
* by uri is either not a property or does not exist.
*/
static const Property* load( const QUrl& uri );
private:
class Private;
QSharedDataPointer<Private> d;
friend class OntologyManager;
};
}
#endif // DISABLE_NEPOMUK_LEGACY
#endif // _NEPOMUK_PROPERTY_H_
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