org.aksw.simba.bengal.triple2nl.converter

Class URIDereferencer

java.lang.Object

org.aksw.simba.bengal.triple2nl.converter.URIDereferencer

public class URIDereferencer
extends Object

Class to retrieve triples based on the Linked Data dereferencing paradigm.

Author:

Lorenz Buehmann

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
(package private) class	URIDereferencer.DereferencingFailedException

Field Summary

Fields

Modifier and Type	Field and Description
private File	cacheDirectory
private String	cacheFileExtension
private org.apache.jena.riot.Lang	cacheFileLanguage
private String	contentType
private static org.apache.log4j.Logger	logger
private boolean	useCache

Constructor Summary

Constructors

Constructor and Description
URIDereferencer()
URIDereferencer(File cacheDirectory)

Method Summary

Modifier and Type	Method and Description
org.apache.jena.rdf.model.Model	dereference(String uri) Get the triples that describe the entity identified by the URI.
org.apache.jena.rdf.model.Model	dereference(URI uri) Get the triples that describe the entity identified by the URI.
private File	getCacheFile(URI uri)
private org.apache.jena.rdf.model.Model	loadFromDisk(URI uri)
void	setUseCache(boolean useCache) Whether to use a file based caching solution, i.e.
private boolean	useCache()
private void	writeToDisk(URI uri, org.apache.jena.rdf.model.Model model)

Methods inherited from class java.lang.Object

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

Field Detail

logger

private static final org.apache.log4j.Logger logger

contentType

private String contentType

cacheDirectory

private File cacheDirectory

useCache

private boolean useCache

cacheFileLanguage

private org.apache.jena.riot.Lang cacheFileLanguage

cacheFileExtension

private String cacheFileExtension

Constructor Detail

URIDereferencer

public URIDereferencer(File cacheDirectory)

URIDereferencer

public URIDereferencer()

Method Detail

dereference

public org.apache.jena.rdf.model.Model dereference(String uri)
                                            throws URIDereferencer.DereferencingFailedException

Get the triples that describe the entity identified by the URI.

Parameters:

uri - the URI of the entity

Returns:

JENA model containing the triples

Throws:

URIDereferencer.DereferencingFailedException

dereference

public org.apache.jena.rdf.model.Model dereference(URI uri)
                                            throws URIDereferencer.DereferencingFailedException

Get the triples that describe the entity identified by the URI.

Parameters:

uri - the URI of the entity

Returns:

JENA model containing the triples

Throws:

URIDereferencer.DereferencingFailedException

setUseCache

public void setUseCache(boolean useCache)

Whether to use a file based caching solution, i.e. for each URI the result is stored in a separate file on disk.

Parameters:

useCache - use cache or not

useCache

private boolean useCache()

getCacheFile

private File getCacheFile(URI uri)

loadFromDisk

private org.apache.jena.rdf.model.Model loadFromDisk(URI uri)

writeToDisk

private void writeToDisk(URI uri,
                         org.apache.jena.rdf.model.Model model)