net.fortytwo.linkeddata.sail

Class LinkedDataSail

java.lang.Object

net.fortytwo.linkeddata.sail.LinkedDataSail

All Implemented Interfaces:

org.openrdf.sail.NotifyingSail, org.openrdf.sail.Sail, org.openrdf.sail.StackableSail

public class LinkedDataSail
extends Object
implements org.openrdf.sail.StackableSail, org.openrdf.sail.NotifyingSail

A dynamic storage layer which treats the Semantic Web as a single global graph of linked data. LinkedDataSail is layered on top of another Sail which serves as a database for cached Semantic Web documents.

Author:

Joshua Shinavier (http://fortytwo.net)

Field Summary

Fields

Modifier and Type	Field and Description
static String	CACHE_LIFETIME
static String	MEMORY_CACHE_CAPACITY

Constructor Summary

Constructors

Constructor and Description
LinkedDataSail(org.openrdf.sail.Sail baseSail)
LinkedDataSail(org.openrdf.sail.Sail baseSail, LinkedDataCache cache)

Method Summary

Methods

Modifier and Type	Method and Description
void	addSailChangedListener(org.openrdf.sail.SailChangedListener listener)
org.openrdf.sail.Sail	getBaseSail()
LinkedDataCache	getCache()
org.openrdf.sail.NotifyingSailConnection	getConnection()
File	getDataDir()
org.openrdf.model.ValueFactory	getValueFactory()
void	initialize()
boolean	isWritable()
void	removeSailChangedListener(org.openrdf.sail.SailChangedListener listener)
void	setBaseSail(org.openrdf.sail.Sail baseSail)
void	setDataDir(File dataDir)
void	shutDown()

Methods inherited from class java.lang.Object

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

Field Detail

CACHE_LIFETIME

public static final String CACHE_LIFETIME

See Also:

Constant Field Values

MEMORY_CACHE_CAPACITY

public static final String MEMORY_CACHE_CAPACITY

See Also:

Constant Field Values

Constructor Detail

LinkedDataSail

public LinkedDataSail(org.openrdf.sail.Sail baseSail,
              LinkedDataCache cache)
               throws RippleException

Parameters:

baseSail - base Sail which provides a storage layer for aggregated RDF data (Note: the base Sail should be initialized before this Sail is used)

cache - a custom WebClosure providing an RDF-document-level view of the Web

Throws:

RippleException - if there is a configuration error

LinkedDataSail

public LinkedDataSail(org.openrdf.sail.Sail baseSail)
               throws RippleException

Parameters:

baseSail - base Sail which provides a storage layer for aggregated RDF data (Note: the base Sail should be initialized before this Sail is used)

Throws:

RippleException - if there is a configuration error

Method Detail

addSailChangedListener

public void addSailChangedListener(org.openrdf.sail.SailChangedListener listener)

Specified by:

addSailChangedListener in interface org.openrdf.sail.NotifyingSail

getConnection

public org.openrdf.sail.NotifyingSailConnection getConnection()
                                                       throws org.openrdf.sail.SailException

Specified by:

getConnection in interface org.openrdf.sail.NotifyingSail

Specified by:

getConnection in interface org.openrdf.sail.Sail

Throws:

org.openrdf.sail.SailException

getDataDir

public File getDataDir()

Specified by:

getDataDir in interface org.openrdf.sail.Sail

getValueFactory

public org.openrdf.model.ValueFactory getValueFactory()

Specified by:

getValueFactory in interface org.openrdf.sail.Sail

initialize

public void initialize()
                throws org.openrdf.sail.SailException

Specified by:

initialize in interface org.openrdf.sail.Sail

Throws:

org.openrdf.sail.SailException

isWritable

public boolean isWritable()
                   throws org.openrdf.sail.SailException

Specified by:

isWritable in interface org.openrdf.sail.Sail

Throws:

org.openrdf.sail.SailException

removeSailChangedListener

public void removeSailChangedListener(org.openrdf.sail.SailChangedListener listener)

Specified by:

removeSailChangedListener in interface org.openrdf.sail.NotifyingSail

setDataDir

public void setDataDir(File dataDir)

Specified by:

setDataDir in interface org.openrdf.sail.Sail

shutDown

public void shutDown()
              throws org.openrdf.sail.SailException

Specified by:

shutDown in interface org.openrdf.sail.Sail

Throws:

org.openrdf.sail.SailException

getBaseSail

public org.openrdf.sail.Sail getBaseSail()

Specified by:

getBaseSail in interface org.openrdf.sail.StackableSail

setBaseSail

public void setBaseSail(org.openrdf.sail.Sail baseSail)

Specified by:

setBaseSail in interface org.openrdf.sail.StackableSail

getCache

public LinkedDataCache getCache()

Returns:

this LinkedDataSail's cache manager