Nepomuk.Query.LiteralTerm

KDE 4.9 PyKDE API Reference

- KDE's Python API

# LiteralTerm Class Reference

`from PyKDE4.nepomuk import *`

Inherits: Nepomuk.Query.Term
Namespace: Nepomuk.Query

## Detailed Description

\class LiteralTerm literalterm.h Nepomuk/Query/LiteralTerm

Match literal properties via full text.

Other than the rest of the terms LiteralTerm has two uses:

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:

     ComparisonTerm( Vocabulary.NAO.hasTag(), LiteralTerm("nepomuk") );
     ComparisonTerm( Vocabulary.NAO.hasTag(), ComparisonTerm( Vocabulary.RDFS.label(), LiteralTerm("nepomuk") ) );

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.

     LiteralTerm( "nepomuk" );

The example above will match all resources that have a property with a value containing the string "nepomuk".

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

## Methods
| __init__ (self, Nepomuk.Query.LiteralTerm term)
| __init__ (self, Soprano.LiteralValue value=Soprano.LiteralValue())
| setValue (self, Soprano.LiteralValue value)
Soprano.LiteralValue | value (self)

## Method Documentation

__init__ | ( | self, |
|  | Nepomuk.Query.LiteralTerm | term
| ) |  |  |

Copy constructor.

__init__ | ( | self, |
|  | Soprano.LiteralValue | value=Soprano.LiteralValue()
| ) |  |  |

Default constructor

Parameters:

  | value | The value this %LiteralTerm should match to.

setValue | ( | self, |
|  | Soprano.LiteralValue | value
| ) |  |  |

Set the value this %LiteralTerm should match to.

\sa value()

Soprano.LiteralValue value | ( |  | self ) |

The value this %LiteralTerm should match to.

\sa setValue()