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: SPORetractionBuffer.java 2265 2009-10-26 12:51:06Z thompsonbry $

Author:

Bryan Thompson

Field Summary

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

SPORetractionBuffer(AbstractTripleStore store, int capacity, boolean computeClosureForStatementIdentifiers)
Deprecated.

Method Summary

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

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)

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)