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Nepomuk

  • Nepomuk
  • Query
  • NegationTerm
Public Member Functions | Static Public Member Functions | Related Symbols | List of all members
Nepomuk::Query::NegationTerm Class Reference

#include <Nepomuk/Query/NegationTerm>

Inheritance diagram for Nepomuk::Query::NegationTerm:
Nepomuk::Query::SimpleTerm Nepomuk::Query::Term

Public Member Functions

 NegationTerm ()
 NegationTerm (const NegationTerm &term)
 ~NegationTerm ()
NegationTerm & operator= (const NegationTerm &term)
Public Member Functions inherited from Nepomuk::Query::SimpleTerm
 ~SimpleTerm ()
void setSubTerm (const Term &term)
Term subTerm () const
Public Member Functions inherited from Nepomuk::Query::Term
 Term ()
 Term (const Term &other)
 ~Term ()
bool isAndTerm () const
bool isComparisonTerm () const
bool isLiteralTerm () const
bool isNegationTerm () const
bool isOptionalTerm () const
bool isOrTerm () const
bool isResourceTerm () const
bool isResourceTypeTerm () const
bool isValid () const
bool operator!= (const Term &term) const
QDebug operator<< (QDebug) const
Term & operator= (const Term &other)
bool operator== (const Term &term) const
Term optimized () const
AndTerm & toAndTerm ()
AndTerm toAndTerm () const
ComparisonTerm & toComparisonTerm ()
ComparisonTerm toComparisonTerm () const
LiteralTerm & toLiteralTerm ()
LiteralTerm toLiteralTerm () const
NegationTerm & toNegationTerm ()
NegationTerm toNegationTerm () const
OptionalTerm & toOptionalTerm ()
OptionalTerm toOptionalTerm () const
OrTerm & toOrTerm ()
OrTerm toOrTerm () const
ResourceTerm & toResourceTerm ()
ResourceTerm toResourceTerm () const
ResourceTypeTerm & toResourceTypeTerm ()
ResourceTypeTerm toResourceTypeTerm () const
QString toString () const
Type type () const

Static Public Member Functions

static Term negateTerm (const Term &term)
Static Public Member Functions inherited from Nepomuk::Query::Term
static Term fromString (const QString &s)
static Term fromVariant (const Variant &variant)

Related Symbols

(Note that these are not member symbols.)

Term operator! (const Term &term)
Related Symbols inherited from Nepomuk::Query::Term
static Term fromProperty (const Types::Property &property, const Variant &variant)

Additional Inherited Members

Public Types inherited from Nepomuk::Query::Term
enum  Type {
  Invalid , Literal , Resource , And ,
  Or , Comparison , ResourceType , Negation ,
  Optional
}

Detailed Description

Negate an arbitrary term.

NegationTerm can be used to negate any other term. A typical example could be to match all resources that do not have a specific tag:

NegationTerm::negateTerm( ComparisonTerm( Vocabulary::NAO::hasTag(), LiteralTerm("nepomuk") ) );
Nepomuk::Query::ComparisonTerm
A term matching the value of a property.
Definition comparisonterm.h:71
Nepomuk::Query::LiteralTerm
Match literal properties via full text.
Definition literalterm.h:87
Nepomuk::Query::NegationTerm::negateTerm
static Term negateTerm(const Term &term)
Negate term.
Author
Sebastian Trueg trueg.nosp@m.@kde.nosp@m..org
Since
4.4

Definition at line 47 of file negationterm.h.

Constructor & Destructor Documentation

◆ NegationTerm() [1/2]

Nepomuk::Query::NegationTerm::NegationTerm ( )

Default constructor: creates an invalid negation term.

◆ NegationTerm() [2/2]

Nepomuk::Query::NegationTerm::NegationTerm ( const NegationTerm & term)

Copy constructor.

◆ ~NegationTerm()

Nepomuk::Query::NegationTerm::~NegationTerm ( )

Destructor.

Member Function Documentation

◆ negateTerm()

Term Nepomuk::Query::NegationTerm::negateTerm ( const Term & term)
static

Negate term.

This method will either strip the first NegationTerm from term or add one.

Returns
The negated term.

◆ operator=()

NegationTerm & Nepomuk::Query::NegationTerm::operator= ( const NegationTerm & term)

Assignment operator.

Friends And Related Symbol Documentation

◆ operator!()

Term operator! ( const Term & term)
related

Logical negation operator which negates the meaning of one term.

See also
NegationTerm::negateTerm()
Since
4.6

The documentation for this class was generated from the following files:
  • negationterm.h
  • term.h
This file is part of the KDE documentation.
Documentation copyright © 1996-2025 The KDE developers.
Generated on Tue Mar 25 2025 00:00:00 by doxygen 1.14.0 written by Dimitri van Heesch, © 1997-2006

KDE's Doxygen guidelines are available online.

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