com.ontotext.ordi.wrappers
Class SesameImpl

java.lang.Object
  com.ontotext.ordi.wrappers.SesameImpl

All Implemented Interfaces:

TripleStore

public class SesameImpl
extends java.lang.Object
implements TripleStore

A Reference implementation of TripleStore using Sesame.

Version:

$Revision: 1.1 $ $Date: 2006/02/01 14:17:15 $

Author:

not attributable

Field Summary

static java.lang.String	SESAME_CONFIG_PARAM the loccation of the external configuration file used to initialise sesame
static java.lang.String	SESAME_PASS the sesame's user passwor
static java.lang.String	SESAME_REPOSITORY the id of the sesame's repository used to store wsml entiites
static java.lang.String	SESAME_RMI_HOST RMI connect parameters to a previously initialized Sesame Server on the net
static java.lang.String	SESAME_RMI_PORT
static java.lang.String	SESAME_USER sesame user used to connect to the sesame instance

Constructor Summary

SesameImpl()

Method Summary

void	addStatement(org.wsmo.common.Identifier subj, org.wsmo.common.IRI pred, org.wsmo.common.Identifier obj) add a single statement to the repository
void	addStatement(org.wsmo.common.Identifier subj, org.wsmo.common.IRI pred, java.lang.String literal) add a single statement to the repository
void	beginUpdate() invoke it to enable further modifications to the repository
boolean	canUpdate() check if modificatin is possible in the current state of the repository
void	commitUpdate() invoke it to commit the modifications made to the repository and disamble further modifications
TripleIterator	getStatements(org.wsmo.common.Identifier subj, org.wsmo.common.IRI pred, org.wsmo.common.Identifier obj) return a TripleIterator with the statements matching the arguments
TripleIterator	getStatements(org.wsmo.common.Identifier subj, org.wsmo.common.IRI pred, java.lang.String literal) return a TripleIterator with the statements matching the arguments
boolean	hasStatement(org.wsmo.common.Identifier subj, org.wsmo.common.IRI pred, org.wsmo.common.Identifier obj) check if a statement is present in the rpository
boolean	hasStatement(org.wsmo.common.Identifier subj, org.wsmo.common.IRI pred, java.lang.String literal) check if a statement is present in the rpository
void	initialize(java.util.Map params) invoked to initialize the reposiotry.
int	removeStatements(org.wsmo.common.Identifier subj, org.wsmo.common.IRI pred) remove all statements with the given subject and predicate from the reposiotry
int	removeStatements(org.wsmo.common.Identifier subj, org.wsmo.common.IRI pred, org.wsmo.common.Identifier obj) remove all statements with the given subject, predicate and object from the reposiotry
int	removeStatements(org.wsmo.common.Identifier subj, org.wsmo.common.IRI pred, java.lang.String literal) remove all statements with the given subject, predicate and object from the reposiotry
void	shutdown() invoked to shut down the reposiroty.

Methods inherited from class java.lang.Object

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

Field Detail

SESAME_REPOSITORY

public static java.lang.String SESAME_REPOSITORY

the id of the sesame's repository used to store wsml entiites

SESAME_USER

public static java.lang.String SESAME_USER

sesame user used to connect to the sesame instance

SESAME_PASS

public static java.lang.String SESAME_PASS

the sesame's user passwor

SESAME_CONFIG_PARAM

public static java.lang.String SESAME_CONFIG_PARAM

the loccation of the external configuration file used to initialise sesame

SESAME_RMI_HOST

public static java.lang.String SESAME_RMI_HOST

RMI connect parameters to a previously initialized Sesame Server on the net

SESAME_RMI_PORT

public static java.lang.String SESAME_RMI_PORT

Constructor Detail

SesameImpl

public SesameImpl()

Method Detail

initialize

public void initialize(java.util.Map params)

Description copied from interface: TripleStore

invoked to initialize the reposiotry.

Specified by:

initialize in interface TripleStore

Parameters:

params - is a map with innitialization parameters. Strings are used as keys and the values may be key dependand

shutdown

public void shutdown()

Description copied from interface: TripleStore

invoked to shut down the reposiroty.

Specified by:

shutdown in interface TripleStore

getStatements

public TripleIterator getStatements(org.wsmo.common.Identifier subj,
                                    org.wsmo.common.IRI pred,
                                    org.wsmo.common.Identifier obj)

Description copied from interface: TripleStore

return a TripleIterator with the statements matching the arguments

Specified by:

getStatements in interface TripleStore

Parameters:

subj - is Identifier or null indicating a wildcard

pred - is IRI or null indicating a wildcard

obj - is Identifier or null indicating a wildcard

Returns:

a TripleIterator that enumerates the matched statements

getStatements

public TripleIterator getStatements(org.wsmo.common.Identifier subj,
                                    org.wsmo.common.IRI pred,
                                    java.lang.String literal)

Description copied from interface: TripleStore

return a TripleIterator with the statements matching the arguments

Specified by:

getStatements in interface TripleStore

Parameters:

subj - is Identifier or null indicating a wildcard

pred - is IRI or null indicating a wildcard

literal - String representation of a the literal or the DataValue

Returns:

a TripleIterator that enumerates the matched statements

hasStatement

public boolean hasStatement(org.wsmo.common.Identifier subj,
                            org.wsmo.common.IRI pred,
                            org.wsmo.common.Identifier obj)

Description copied from interface: TripleStore

check if a statement is present in the rpository

Specified by:

hasStatement in interface TripleStore

Parameters:

subj - is Identifier or null indicating a wildcard

pred - is IRI or null indicating a wildcard

obj - is Identifier or null indicating a wildcard

Returns:

true if statement is found in the repository, false otherwise

hasStatement

public boolean hasStatement(org.wsmo.common.Identifier subj,
                            org.wsmo.common.IRI pred,
                            java.lang.String literal)

Description copied from interface: TripleStore

check if a statement is present in the rpository

Specified by:

hasStatement in interface TripleStore

Parameters:

subj - is Identifier or null indicating a wildcard

pred - is IRI or null indicating a wildcard

literal - String representation of a the literal or the DataValue

Returns:

true if statement is found in the repository, false otherwise

addStatement

public void addStatement(org.wsmo.common.Identifier subj,
                         org.wsmo.common.IRI pred,
                         org.wsmo.common.Identifier obj)

Description copied from interface: TripleStore

add a single statement to the repository

Specified by:

addStatement in interface TripleStore

Parameters:

subj - is Identifier, null is not allowed

pred - is IRI, null is not allowed

obj - is Identifier, null is not allowed

addStatement

public void addStatement(org.wsmo.common.Identifier subj,
                         org.wsmo.common.IRI pred,
                         java.lang.String literal)

Description copied from interface: TripleStore

add a single statement to the repository

Specified by:

addStatement in interface TripleStore

Parameters:

subj - is Identifier,null is not allowed

pred - is IRI,null is not allowed

literal - String representation of a the literal or the DataValue,null is not allowed

removeStatements

public int removeStatements(org.wsmo.common.Identifier subj,
                            org.wsmo.common.IRI pred)

Description copied from interface: TripleStore

remove all statements with the given subject and predicate from the reposiotry

Specified by:

removeStatements in interface TripleStore

Parameters:

subj - is Identifier or null indicating a wildcard

pred - is IRI or null indicating a wildcard

Returns:

number of statements removed

removeStatements

public int removeStatements(org.wsmo.common.Identifier subj,
                            org.wsmo.common.IRI pred,
                            org.wsmo.common.Identifier obj)

Description copied from interface: TripleStore

remove all statements with the given subject, predicate and object from the reposiotry

Specified by:

removeStatements in interface TripleStore

Parameters:

subj - is Identifier or null indicating a wildcard

pred - is IRI or null indicating a wildcard

obj - is Identifier or null indicating a wildcard

Returns:

number of statements removed

removeStatements

public int removeStatements(org.wsmo.common.Identifier subj,
                            org.wsmo.common.IRI pred,
                            java.lang.String literal)

Description copied from interface: TripleStore

remove all statements with the given subject, predicate and object from the reposiotry

Specified by:

removeStatements in interface TripleStore

Parameters:

subj - is Identifier or null indicating a wildcard

pred - is IRI or null indicating a wildcard

literal - String representation of a the literal or the DataValue

Returns:

number of statements removed

canUpdate

public boolean canUpdate()

Description copied from interface: TripleStore

check if modificatin is possible in the current state of the repository

Specified by:

canUpdate in interface TripleStore

Returns:

true if allowed, false otherwise

beginUpdate

public void beginUpdate()

Description copied from interface: TripleStore

invoke it to enable further modifications to the repository

Specified by:

beginUpdate in interface TripleStore

commitUpdate

public void commitUpdate()

Description copied from interface: TripleStore

invoke it to commit the modifications made to the repository and disamble further modifications

Specified by:

commitUpdate in interface TripleStore