com.bigdata.rdf.rio
Class AbstractStatementBuffer.StatementBuffer2<F extends Statement,G extends BigdataStatement>

java.lang.Object
  com.bigdata.rdf.rio.AbstractStatementBuffer<F,G>
      com.bigdata.rdf.rio.AbstractStatementBuffer.StatementBuffer2<F,G>

Type Parameters:

F - The generic type of the source Statement added to the buffer by the callers.

G - The generic type of the BigdataStatements stored in the buffer.

All Implemented Interfaces:

IStatementBuffer<F>, IBuffer<F>

Enclosing class:

AbstractStatementBuffer<F extends Statement,G extends BigdataStatement>

public static class AbstractStatementBuffer.StatementBuffer2<F extends Statement,G extends BigdataStatement>
extends AbstractStatementBuffer<F,G>

Loads Statements into an RDF database.

Version:

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

Author:

Bryan Thompson

Nested Class Summary

Nested classes/interfaces inherited from class com.bigdata.rdf.rio.AbstractStatementBuffer

AbstractStatementBuffer.StatementBuffer2<F extends Statement,G extends BigdataStatement>

Field Summary

Fields inherited from class com.bigdata.rdf.rio.AbstractStatementBuffer

DEBUG, INFO, log, readOnly, statementBuffer

Constructor Summary

AbstractStatementBuffer.StatementBuffer2(AbstractTripleStore lexiconStore, AbstractTripleStore statementStore, boolean readOnly, int capacity)

AbstractStatementBuffer.StatementBuffer2(AbstractTripleStore lexiconStore, boolean readOnly, int capacity)

Method Summary

long	flush() Converts any buffered statements and any deferred statements and then invokes AbstractStatementBuffer.overflow() to flush anything remaining in the buffer.
AbstractTripleStore	getStatementStore() From the ctor.
protected int	handleProcessedStatements(G[] a) Writes the Statements onto the getStatementStore().

Methods inherited from class com.bigdata.rdf.rio.AbstractStatementBuffer

add, add, add, add, clear, convertValue, getDatabase, getValueFactory, isEmpty, overflow, processBufferedValues, processDeferredStatements, reset, setBNodeMap, size

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractStatementBuffer.StatementBuffer2

public AbstractStatementBuffer.StatementBuffer2(AbstractTripleStore lexiconStore,
                                                boolean readOnly,
                                                int capacity)

Parameters:

lexiconStore - The database against which the Values will be resolved (or added). If this database supports statement identifiers, then statement identifiers for the converted statements will be resolved (or added) to the lexicon.

readOnly - When true, Values (and statement identifiers iff enabled) will be resolved against the LexiconRelation, but entries WILL NOT be inserted into the LexiconRelation for unknown Values (or for statement identifiers for unknown Statements when statement identifiers are enabled).

capacity - The capacity of the backing buffer.

AbstractStatementBuffer.StatementBuffer2

public AbstractStatementBuffer.StatementBuffer2(AbstractTripleStore lexiconStore,
                                                AbstractTripleStore statementStore,
                                                boolean readOnly,
                                                int capacity)

Parameters:

lexiconStore - The database against which the Values will be resolved (or added). If this database supports statement identifiers, then statement identifiers for the converted statements will be resolved (or added) to the lexicon.

statementStore - The database against which the Statements will be resolved (or added).

readOnly - When true, Values (and statement identifiers iff enabled) will be resolved against the LexiconRelation, but entries WILL NOT be inserted into the LexiconRelation for unknown Values (or for statement identifiers for unknown Statements when statement identifiers are enabled). Likewise, when true, Statements will not be written onto the SPORelation.

capacity - The capacity of the backing buffer.

Method Detail

getStatementStore

public AbstractTripleStore getStatementStore()

From the ctor.

Specified by:

getStatementStore in interface IStatementBuffer<F extends Statement>

Overrides:

getStatementStore in class AbstractStatementBuffer<F extends Statement,G extends BigdataStatement>

handleProcessedStatements

protected int handleProcessedStatements(G[] a)

Writes the Statements onto the getStatementStore().

Specified by:

handleProcessedStatements in class AbstractStatementBuffer<F extends Statement,G extends BigdataStatement>

Parameters:

a - An array of processed BigdataStatements.

Returns:

The #of statements actually written on the statement indices.

flush

public long flush()

Description copied from class: AbstractStatementBuffer

Converts any buffered statements and any deferred statements and then invokes AbstractStatementBuffer.overflow() to flush anything remaining in the buffer.

Specified by:

flush in interface IBuffer<F extends Statement>

Overrides:

flush in class AbstractStatementBuffer<F extends Statement,G extends BigdataStatement>

Returns:

The total #of statements written on the getStatementStore(). This will be ZERO (0L) if readOnly == true.