/usr/include/nepomuk/literalterm.h is in kdelibs5-dev 4:4.13.0-0ubuntu1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 | /*
This file is part of the Nepomuk KDE project.
Copyright (C) 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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) version 3, or any
later version accepted by the membership of KDE e.V. (or its
successor approved by the membership of KDE e.V.), which shall
act as a proxy defined in Section 6 of version 3 of the license.
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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _NEPOMUK_QUERY_LITERAL_TERM_H_
#define _NEPOMUK_QUERY_LITERAL_TERM_H_
#include "term.h"
#include "nepomukquery_export.h"
namespace Nepomuk {
namespace Query {
/**
* \class LiteralTerm literalterm.h Nepomuk/Query/LiteralTerm
*
* \brief Match literal properties via full text.
*
* Other than the rest of the terms LiteralTerm has two uses:
*
* \section literalterm_comparison Usage in ComparisonTerm
*
* %LiteralTerm can be used in a ComparisonTerm with both properties
* with a literal range and a resource range. The former case is the simple
* one: the value() of the %LiteralTerm will simply be compared to the value
* of the ComparisonTerm::property(). In the latter case value() will be
* matched to rdfs:label of any resource. So in essence the following two
* examples are equal:
*
* \code
* ComparisonTerm( Vocabulary::NAO::hasTag(), LiteralTerm("nepomuk") );
* ComparisonTerm( Vocabulary::NAO::hasTag(), ComparisonTerm( Vocabulary::RDFS::label(), LiteralTerm("nepomuk") ) );
* \endcode
*
*
* \section literalterm_plain Usage as "stand-alone" term
*
* As a term by itself %LiteralTerm will act like a traditional full text query and
* match all resources that contain the string value in some property.
*
* \code
* LiteralTerm( "nepomuk" );
* \endcode
*
* The example above will match all resources that have a property with a value containing
* the string "nepomuk".
*
* \section literalterm_examples Examples
*
* <pre>LiteralTerm("nepomuk")</pre> searches for the term "nepomuk".
*
* <pre>LiteralTerm("'nepomuk*'")</pre> searches for the terms starting with "nepomuk".
*
* <pre>LiteralTerm("'nepomuk kde'")</pre> searches for the term "nepomuk kde".
*
* <pre>LiteralTerm("'nepomuk* kde'")</pre> searches for terms matching "nepomuk* kde".
*
* %LiteralTerm always tries to normalize the query terms as best as possible. This includes
* automatically adding quotes as needed.
*
* \warning Be aware that the examples above apply to using %LiteralTerm as a stand-alone term
* or in a ComparisonTerm::Contains term. When using ComparisonTerm::Regexp the test as specified
* will be used as-is to create the regular expression.
*
* \author Sebastian Trueg <trueg@kde.org>
*
* \since 4.4
*/
class NEPOMUKQUERY_EXPORT LiteralTerm : public Term
{
public:
/**
* Copy constructor.
*/
LiteralTerm( const LiteralTerm& term );
/**
* Default constructor
*
* \param value The value this %LiteralTerm should match to.
*/
LiteralTerm( const Soprano::LiteralValue& value = Soprano::LiteralValue() );
/**
* Desctructor.
*/
~LiteralTerm();
/**
* Assignment operator.
*/
LiteralTerm& operator=( const LiteralTerm& term );
/**
* The value this %LiteralTerm should match to.
*
* \sa setValue()
*/
Soprano::LiteralValue value() const;
/**
* Set the value this %LiteralTerm should match to.
*
* \sa value()
*/
void setValue( const Soprano::LiteralValue& value );
};
}
}
#endif
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