com.bigdata.rdf.inf

Class AbstractSPOBuffer

java.lang.Object

com.bigdata.rdf.inf.AbstractSPOBuffer

All Implemented Interfaces:

ISPOBuffer

Direct Known Subclasses:

SPOAssertionBuffer, SPORetractionBuffer

Deprecated.

by AbstractArrayBuffer, but this class is more tightly coupled to the AbstractTripleStore.

public abstract class AbstractSPOBuffer
extends Object
implements ISPOBuffer

Abtract base class for buffering SPOs for some batch api operation.

Version:

$Id$

Author:

Bryan Thompson

Field Summary

Fields

Modifier and Type	Field and Description
protected int	capacity Deprecated. The buffer capacity.
protected IElementFilter<ISPO>	filter Deprecated. An optional filter.
protected int	numStmts Deprecated. The #of statements currently in stmts
protected ISPO[]	stmts Deprecated. The array in which the statements are stored.

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

DEBUG, INFO, log

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractSPOBuffer(AbstractTripleStore store, IElementFilter<ISPO> filter, int capacity) Deprecated. Create a buffer.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	add(ISPO stmt) Deprecated. Adds an ISPO.
void	dump(AbstractTripleStore store) Deprecated. Dumps the state of the buffer on System.err.
abstract int	flush() Deprecated. Flush any buffered statements to the backing store.
ISPO	get(int i) Deprecated. The SPO at the given index (used by some unit tests).
protected AbstractTripleStore	getTermDatabase() Deprecated. The database in which the term identifiers are defined - this is exposed ONLY for use in logging messages.
boolean	isEmpty() Deprecated. True iff there are no statements in the buffer.
protected boolean	nearCapacity() Deprecated. Returns true iff there is no more space remaining in the buffer.
int	size() Deprecated. The #of statements currently in the buffer.
String	toString() Deprecated.

Methods inherited from class java.lang.Object

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

Field Detail

stmts

protected final ISPO[] stmts

Deprecated.

The array in which the statements are stored.

numStmts

protected int numStmts

Deprecated.

The #of statements currently in stmts

filter

protected final IElementFilter<ISPO> filter

Deprecated.

An optional filter. When present, statements matched by the filter are NOT retained by the SPOAssertionBuffer.

capacity

protected final int capacity

Deprecated.

The buffer capacity.

Constructor Detail

AbstractSPOBuffer

protected AbstractSPOBuffer(AbstractTripleStore store,
                 IElementFilter<ISPO> filter,
                 int capacity)

Deprecated.

Create a buffer.

Parameters:

store - The database used to resolve term identifiers in log statements (optional).

filter - Option filter. When present statements matched by the filter are NOT retained by the SPOAssertionBuffer and will NOT be added to the store.

capacity - The maximum #of Statements, URIs, Literals, or BNodes that the buffer can hold.

Method Detail

size

public int size()

Deprecated.

Description copied from interface: ISPOBuffer

The #of statements currently in the buffer.

Specified by:

size in interface ISPOBuffer

isEmpty

public boolean isEmpty()

Deprecated.

Description copied from interface: ISPOBuffer

True iff there are no statements in the buffer.

Specified by:

isEmpty in interface ISPOBuffer

get

public ISPO get(int i)

Deprecated.

The SPO at the given index (used by some unit tests).

Parameters:

i -

Returns:

getTermDatabase

protected AbstractTripleStore getTermDatabase()

Deprecated.

The database in which the term identifiers are defined - this is exposed ONLY for use in logging messages.

nearCapacity

protected boolean nearCapacity()

Deprecated.

Returns true iff there is no more space remaining in the buffer. Under those conditions adding another statement to the buffer could cause an overflow.

Returns:

True if the buffer might overflow if another statement were added.

toString

public String toString()

Deprecated.

Overrides:

toString in class Object

flush

public abstract int flush()

Deprecated.

Description copied from interface: ISPOBuffer

Flush any buffered statements to the backing store.

Specified by:

flush in interface ISPOBuffer

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)

add

public boolean add(ISPO stmt)

Deprecated.

Description copied from interface: ISPOBuffer

Adds an ISPO.

Specified by:

add in interface ISPOBuffer

Parameters:

stmt - The ISPO.

Returns:

true if the buffer will store the statement (i.e., the statement is not excluded by the filter).

dump

public void dump(AbstractTripleStore store)

Deprecated.

Dumps the state of the buffer on System.err.

Parameters:

store - Used to resolve the term identifiers to Values.