com.bigdata.rdf.inf

Class SPORetractionBuffer

java.lang.Object

com.bigdata.rdf.inf.AbstractSPOBuffer

com.bigdata.rdf.inf.SPORetractionBuffer

All Implemented Interfaces:

ISPOBuffer

Deprecated.

by AbstractElementBuffer.DeleteBuffer and AbstractSolutionBuffer.DeleteSolutionBuffer and the changes to how truth maintenance is handled (rule rewrites).

public class SPORetractionBuffer
extends AbstractSPOBuffer

A buffer for SPOs which causes the corresponding statements (and their Justifications) be retracted from the database when it is flush()ed.

Version:

$Id$

Author:

Bryan Thompson

Field Summary

Fields

Modifier and Type	Field and Description
protected IChangeLog	changeLog Deprecated. Optional change log for change notification.

Fields inherited from class com.bigdata.rdf.inf.AbstractSPOBuffer

capacity, filter, numStmts, stmts

Fields inherited from interface com.bigdata.rdf.spo.ISPOBuffer

DEBUG, INFO, log

Constructor Summary

Constructors

Constructor and Description
SPORetractionBuffer(AbstractTripleStore store, int capacity, boolean computeClosureForStatementIdentifiers) Deprecated.
SPORetractionBuffer(AbstractTripleStore store, int capacity, boolean computeClosureForStatementIdentifiers, IChangeLog changeLog) Deprecated.

Method Summary

Methods

Modifier and Type	Method and Description
int	flush() Deprecated. Flush any buffered statements to the backing store.

Methods inherited from class com.bigdata.rdf.inf.AbstractSPOBuffer

add, dump, get, getTermDatabase, isEmpty, nearCapacity, size, toString

Methods inherited from class java.lang.Object

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

Field Detail

changeLog

protected final IChangeLog changeLog

Deprecated.

Optional change log for change notification.

Constructor Detail

SPORetractionBuffer

public SPORetractionBuffer(AbstractTripleStore store,
                   int capacity,
                   boolean computeClosureForStatementIdentifiers)

Deprecated.

Parameters:

store - The database from which the statement will be removed when the buffer is flush()ed.

capacity - The capacity of the retraction buffer.

computeClosureForStatementIdentifiers - See AbstractTripleStore#removeStatements(com.bigdata.rdf.spo.ISPOIterator, boolean)

SPORetractionBuffer

public SPORetractionBuffer(AbstractTripleStore store,
                   int capacity,
                   boolean computeClosureForStatementIdentifiers,
                   IChangeLog changeLog)

Deprecated.

Parameters:

store - The database from which the statement will be removed when the buffer is flush()ed.

capacity - The capacity of the retraction buffer.

computeClosureForStatementIdentifiers - See AbstractTripleStore#removeStatements(com.bigdata.rdf.spo.ISPOIterator, boolean)

changeLog - optional change log for change notification

Method Detail

flush

public int flush()

Deprecated.

Description copied from interface: ISPOBuffer

Flush any buffered statements to the backing store.

Specified by:

flush in interface ISPOBuffer

Specified by:

flush in class AbstractSPOBuffer

Returns:

The cumulative #of statements that were written on the indices since the last time the counter was reset. A statement that was previously an axiom or inferred and that is converted to an explicit statement by this method will be reported in this count as well as any statement that was not pre-existing in the database. Statement removal also counts as a "write".

See Also:

#flush(boolean)