at.newmedialab.ldpath.backend.linkeddata
Class LDPersistentBackend

java.lang.Object
  at.newmedialab.ldpath.backend.sesame.AbstractSesameBackend
      at.newmedialab.ldpath.backend.sesame.SesameRepositoryBackend
          at.newmedialab.ldpath.backend.linkeddata.AbstractLDBackend
              at.newmedialab.ldpath.backend.linkeddata.LDPersistentBackend

All Implemented Interfaces:

LDCacheProvider, at.newmedialab.ldpath.api.backend.RDFBackend<org.openrdf.model.Value>

public class LDPersistentBackend
extends AbstractLDBackend

A Linked Data backend with persistent caching of the retrieved data. All data is read and stored in the directory passed as constructor argument.

Author: Sebastian Schaffert

Constructor Summary

LDPersistentBackend(File dataDirectory)
Create a persistent linked data backend storing the cache data in the directory passed as argument.

Method Summary

Map<String,CacheEntry>	getMetadataRepository() /** Return a map that can be used to store caching metadata about resources.
void	shutdown()

Methods inherited from class at.newmedialab.ldpath.backend.linkeddata.AbstractLDBackend

getTripleRepository, listEndpoints, listObjects, listSubjects, registerEndpoint, unregisterEndpoint

Methods inherited from class at.newmedialab.ldpath.backend.sesame.SesameRepositoryBackend

createLiteral, createLiteral, createURI, getRepository, setRepository

Methods inherited from class at.newmedialab.ldpath.backend.sesame.AbstractSesameBackend

booleanValue, createLiteralInternal, createLiteralInternal, createURIInternal, dateTimeValue, dateValue, debugType, decimalValue, doubleValue, floatValue, getLiteralLanguage, getLiteralType, getThreadPool, integerValue, intValue, isBlank, isLiteral, isURI, listObjectsInternal, listSubjectsInternal, longValue, stringValue, supportsThreading, timeValue

Methods inherited from class java.lang.Object

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

Constructor Detail

LDPersistentBackend

public LDPersistentBackend(File dataDirectory)
                    throws IOException

Create a persistent linked data backend storing the cache data in the directory passed as argument. The directory will be created if it does not exist.

Parameters:

dataDirectory -

Throws:

IOException

Method Detail

shutdown

public void shutdown()

getMetadataRepository

public Map<String,CacheEntry> getMetadataRepository()

/** Return a map that can be used to store caching metadata about resources. The LDCacheProvider should take care of persisting the metadata if desired.

Returns:

a map for storing caching metadata