org.aksw.commons.util

Class Prefixer

java.lang.Object

org.aksw.commons.util.Prefixer

public class Prefixer
extends Object

Note this class is supposed to use certain terminology: uri - the full uri http://dbpedia.org/resource/London prefix - the shortcut canonical to prefix.cc namespace - the "common part" of uris, e.g. http://dbpedia.org/resource/ prefixedUri - namespace replaced with prefix: dbpedia:London NOTE: to use a base prefix add an empty prefix to the map: ""->"http://dbpedia.org/resource/" NOTE: Currently no order is used, namespaces could include other namespaces Created by Sebastian Hellmann - http://bis.informatik.uni-leipzig.de/SebastianHellmann A class for handling prefixes Date: 28.01.11

Constructor Summary

Constructors

Constructor and Description
Prefixer()
Prefixer(Map<String,String> prefixToNamespace, boolean appendPopularPrefixes)

Method Summary

Methods

Modifier and Type	Method and Description
String	nicen(String uri) http://dbpedia.org/resource/J%C3%BCrgen_Prochnow will be rendered as: Jürgen Prochnow by the following operations: - strip namespace - urldecode - replace _ by whitespace
String	prefixUri(String uri) http://dbpedia.org/resource/London -> dbpedia:London
void	setPrefixToNamespace(Map<String,String> prefixToNamespace) resets everything
String	stripNamespace(String uri) this function calls stripNamespace(uri, true);
String	stripNamespace(String uri, boolean useHeuristic) strips the namespace, either by base or known prefix or a heuristic
static String	stripNamespaceHeuristic(String uri) currently implemented to cut after the last # or if not available after the last /
Map<String,String>	theMostPopulars()
String	toSparqlPrefix() NOTE base recognition is not implemented

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Prefixer

public Prefixer()

Prefixer

public Prefixer(Map<String,String> prefixToNamespace,
        boolean appendPopularPrefixes)

Method Detail

setPrefixToNamespace

public void setPrefixToNamespace(Map<String,String> prefixToNamespace)

resets everything

Parameters:

prefixToNamespace -

theMostPopulars

public Map<String,String> theMostPopulars()

toSparqlPrefix

public String toSparqlPrefix()

NOTE base recognition is not implemented

Returns:

nicen

public String nicen(String uri)

http://dbpedia.org/resource/J%C3%BCrgen_Prochnow will be rendered as: Jürgen Prochnow by the following operations: - strip namespace - urldecode - replace _ by whitespace

Parameters:

uri -

Returns:

stripNamespace

public String stripNamespace(String uri)

this function calls stripNamespace(uri, true);

Parameters:

uri -

Returns:

stripNamespace

public String stripNamespace(String uri,
                    boolean useHeuristic)

strips the namespace, either by base or known prefix or a heuristic

Parameters:

uri - e.g. http://dbpedia.org/resource/London

useHeuristic - if true

Returns:

The stripped uri, i.e. London

stripNamespaceHeuristic

public static String stripNamespaceHeuristic(String uri)

currently implemented to cut after the last # or if not available after the last /

Parameters:

uri - e.g. http://dbpedia.org/resource/

Returns:

e.g. London

prefixUri

public String prefixUri(String uri)

http://dbpedia.org/resource/London -> dbpedia:London

Parameters:

uri -

Returns:

The prefixed URI, or the full uri, if no prefix was found