org.openrdf.sesame.sailimpl.rdbms
Class RdfRepository

java.lang.Object
  org.openrdf.sesame.sailimpl.rdbms.RdfSource
      org.openrdf.sesame.sailimpl.rdbms.RdfRepository

All Implemented Interfaces:

RdfRepository, RdfSource, Sail, TableNames, ValueFactory

Direct Known Subclasses:

RdfSchemaRepository

public class RdfRepository

extends RdfSource

implements RdfRepository, TableNames

A portable implementation of the RdfRepository interface for relational databases, based on (a subset of) the SQL2/SQL92 standard. This class defines the update methods. The superclass RdfSource defines the read-only methods.

Author:

Arjohn Kampman

Field Summary

Fields inherited from class org.openrdf.sesame.sailimpl.rdbms.RdfSource

JDBC_DRIVER_KEY, JDBC_URL_KEY, KEY_EXPORT_FLAGS, KEY_SCHEMACREATOR, KEY_SCHEMAVERSION, PASSWORD_KEY, USER_KEY, VALUE_DIRTY, VALUE_UP_TO_DATE

Fields inherited from interface org.openrdf.sesame.sailimpl.rdbms.TableNames

ADDED_TRIPLES_TABLE, ALL_INFERRED_TABLE, ALL_NEW_TRIPLES_TABLE, CLASS_TABLE, DEPEND_TABLE, DIRECT_SUBCLASSOF_TABLE, DIRECT_SUBPROPERTYOF_TABLE, DOMAIN_TABLE, EXPIRED_LITERALS_TABLE, EXPIRED_RESOURCES_TABLE, EXPIRED_TRIPLES_TABLE, EXPIRED_VALUES_TABLE, GROUNDED_TRIPLES_TABLE, INFERRED_TABLE, INSTANCEOF_TABLE, LITERALS_TABLE, NAMESPACES_TABLE, NEW_GROUNDED_TRIPLES_TABLE, NEW_TRIPLES_TABLE, PROPER_INSTANCEOF_TABLE, PROPERTY_TABLE, RANGE_TABLE, RAW_TRIPLES_TABLE, REP_INFO_TABLE, RESOURCES_TABLE, SUBCLASSOF_TABLE, SUBPROPERTYOF_TABLE, TRIPLES_TABLE

Constructor Summary

RdfRepository()

Method Summary

void	addListener(SailChangedListener listener)
void	addStatement(Resource subj, URI pred, Value obj) Adds a statament to the repository.
void	changeNamespacePrefix(String namespace, String prefix) Changes the prefix of a namespace.
void	clearRepository() Clears the repository.
void	commitTransaction() Commits a started transaction.
void	initialize(Map configParams) Initializes the Sail using a set of configuration parameters.
void	removeListener(SailChangedListener listener)
int	removeStatements(Resource subj, URI pred, Value obj) Removes data statements that match the (subject, predicate, object) pattern from the repository.
void	startTransaction() Starts a transaction.
boolean	transactionStarted() Checks whether a transaction has been started.

Methods inherited from class org.openrdf.sesame.sailimpl.rdbms.RdfSource

createBNode, createBNode, createLiteral, createLiteral, createLiteral, createStatement, createURI, createURI, getLiteral, getNamespaces, getResource, getStatements, getStatements, getValue, getValueFactory, hasStatement, hasStatement, initialize, initialize, optimizeQuery, shutDown

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.openrdf.sesame.sail.RdfSource

getNamespaces, getStatements, getValueFactory, hasStatement, optimizeQuery

Methods inherited from interface org.openrdf.sesame.sail.Sail

shutDown

Constructor Detail

RdfRepository

public RdfRepository()

Method Detail

initialize

public void initialize(Map configParams)
                throws SailInitializationException

Description copied from interface: Sail

Initializes the Sail using a set of configuration parameters. The relevant names and values of the parameters are determined by the implementation of the interface.

Specified by:

initialize in interface Sail

Overrides:

initialize in class RdfSource

Parameters:

configParams - configuration parameters

Throws:

SailInitializationException - If the RdfSource could not be initialized using the supplied parameters.

See Also:

Sail.initialize(java.util.Map)

startTransaction

public void startTransaction()

Description copied from interface: RdfRepository

Starts a transaction. A transaction needs to be started before data can be added to or removed from the repository.

Specified by:

startTransaction in interface RdfRepository

transactionStarted

public boolean transactionStarted()

Description copied from interface: RdfRepository

Checks whether a transaction has been started.

Specified by:

transactionStarted in interface RdfRepository

Returns:

true if a transaction has been started, false otherwise.

addStatement

public void addStatement(Resource subj,
                         URI pred,
                         Value obj)
                  throws SailUpdateException

Description copied from interface: RdfRepository

Adds a statament to the repository. You must start a transaction before this method can be used.

Specified by:

addStatement in interface RdfRepository

Parameters:

subj - subject of statement

pred - predicate of statement

obj - object of statement

Throws:

SailUpdateException - If the statement could not be added.

See Also:

RdfRepository.startTransaction()

removeStatements

public int removeStatements(Resource subj,
                            URI pred,
                            Value obj)
                     throws SailUpdateException

Description copied from interface: RdfRepository

Removes data statements that match the (subject, predicate, object) pattern from the repository. All three parameters may be null to indicate wildcards. You must start a transaction before this method can be used.

Specified by:

removeStatements in interface RdfRepository

Parameters:

subj - subject of statement

pred - predicate of statement

obj - object of statement

Returns:

the number of statements that have been removed.

Throws:

SailUpdateException - If the statement(s) could not be removed.

See Also:

RdfRepository.startTransaction()

commitTransaction

public void commitTransaction()

Description copied from interface: RdfRepository

Commits a started transaction. A transaction needs to be commited to be guaranteed that data has been added to, or removed from the repository.

Specified by:

commitTransaction in interface RdfRepository

clearRepository

public void clearRepository()
                     throws SailUpdateException

Description copied from interface: RdfRepository

Clears the repository. After the repository was cleared, it will be in the same state as after initialization. You must start a transaction before this method can be used.

Specified by:

clearRepository in interface RdfRepository

Throws:

SailUpdateException - If the repository could not be cleared (for example when a transaction was not started first).

changeNamespacePrefix

public void changeNamespacePrefix(String namespace,
                                  String prefix)
                           throws SailUpdateException

Description copied from interface: RdfRepository

Changes the prefix of a namespace. The new prefix must be unique in the repository; it is not allowed to be associated with any other namespace. You must start a transaction before this method can be used.

Specified by:

changeNamespacePrefix in interface RdfRepository

Parameters:

namespace - The namespace for which the associated prefix should be changed.

prefix - The new prefix.

Throws:

SailUpdateException - If the namespace prefix could not be changed, for example when no transaction was started.

addListener

public void addListener(SailChangedListener listener)

Specified by:

addListener in interface RdfRepository

removeListener

public void removeListener(SailChangedListener listener)

Specified by:

removeListener in interface RdfRepository