Package com.semedy.reasoner.reasoning.processes

Class SwappableRelation

java.lang.Object

com.semedy.reasoner.edb.persistentstore.AbstractCacheUnit

com.semedy.reasoner.reasoning.processes.SwappableRelation

All Implemented Interfaces:

CacheUnit

Direct Known Subclasses:

SwappableIncrementalRelation

public class SwappableRelation
extends AbstractCacheUnit

Store for a swappable relation.
Either relation is in main memory or it is persistent.
Main memory incremental relation can be swapped out.

Author:

angele

Field Summary

Fields

Modifier and Type	Field	Description
TupleStore	_tupleStore	tuple store

Constructor Summary

Constructors

Constructor	Description
SwappableRelation(int arity, ReasoningMonitor monitor, String tempDir, boolean releasable, boolean cepReasoning, boolean retracts)
SwappableRelation(int arity, ReasoningMonitor monitor, String tempDir, boolean releasable, boolean cepReasoning, boolean retracts, boolean duplicates)	the receiver it is a part of

Method Summary

Modifier and Type	Method	Description
boolean	addTuple(int tuple)	add a tuple
boolean	addTuple(long[] tuple)	add a tuple
boolean	addTuple(TupleBuffer tuple)	add a tuple
void	clear()	clear relation
void	destroy()	destroy it.
void	finalize()	finally destroy it
ReasoningRelation	getTuples()	get all tuples as reasoning relation
TupleStore	getTupleStore()	get the tuple store behind
boolean	isInMemory()	is it in main memory
boolean	isReleasable()	is it releasable?
void	release()	swap out.
void	remove()	remove all tuples
long	size()	number of tuples
long	sizeInBytes()	get the approximate size in bytes used in main memory
ReasoningRelation	swapout(TupleFile tupleFile)	swapout and return it as (persistent) reasoning relation
void	swapOut()	swap out to temp dir
void	swapOut(TupleFile tupleFile)	swap out to tuple file
TupleFile	swapOutToTupleFile()	Swap out to a tuple file with a generic name in temp directory

Methods inherited from class com.semedy.reasoner.edb.persistentstore.AbstractCacheUnit

getLast, getNext, setLast, setNext, touch

Methods inherited from class java.lang.Object

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

Field Details

_tupleStore

public TupleStore _tupleStore

tuple store

Constructor Details

SwappableRelation

public SwappableRelation(int arity,
 ReasoningMonitor monitor,
 String tempDir,
 boolean releasable,
 boolean cepReasoning,
 boolean retracts,
 boolean duplicates)

the receiver it is a part of

SwappableRelation

public SwappableRelation(int arity,
 ReasoningMonitor monitor,
 String tempDir,
 boolean releasable,
 boolean cepReasoning,
 boolean retracts)

Method Details

clear

public void clear()
           throws IOException

clear relation

Throws:

IOException

isInMemory

public boolean isInMemory()

is it in main memory

Returns:

addTuple

public boolean addTuple(long[] tuple)
                 throws IOException,
EDBException

add a tuple

Parameters:

tuple -

Returns:

Throws:

IOException

EDBException

addTuple

public boolean addTuple(TupleBuffer tuple)
                 throws IOException,
EDBException

add a tuple

Parameters:

tuple -

Returns:

Throws:

IOException

EDBException

addTuple

public boolean addTuple(int tuple)
                 throws IOException,
EDBException

add a tuple

Parameters:

tuple -

Returns:

Throws:

IOException

EDBException

getTuples

public ReasoningRelation getTuples()

get all tuples as reasoning relation

getTupleStore

public TupleStore getTupleStore()

get the tuple store behind

Returns:

sizeInBytes

public long sizeInBytes()

get the approximate size in bytes used in main memory

Specified by:

sizeInBytes in interface CacheUnit

Specified by:

sizeInBytes in class AbstractCacheUnit

Returns:

swapout

public ReasoningRelation swapout(TupleFile tupleFile)
                          throws IOException,
EDBException

swapout and return it as (persistent) reasoning relation

Parameters:

tupleFile -

Returns:

Throws:

IOException

EDBException

swapOutToTupleFile

public TupleFile swapOutToTupleFile()
                             throws IOException,
EDBException

Swap out to a tuple file with a generic name in temp directory

Returns:

Throws:

IOException

EDBException

swapOut

public void swapOut(TupleFile tupleFile)
             throws IOException,
EDBException

swap out to tuple file

Parameters:

tupleFile -

Throws:

IOException

EDBException

swapOut

public void swapOut()
             throws IOException,
EDBException

swap out to temp dir

Throws:

IOException

EDBException

release

public void release()
             throws IOException,
EDBException

swap out. Used in cache manager

Specified by:

release in interface CacheUnit

Specified by:

release in class AbstractCacheUnit

Throws:

EDBException

IOException

isReleasable

public boolean isReleasable()
                     throws IOException

is it releasable?

Specified by:

isReleasable in interface CacheUnit

Specified by:

isReleasable in class AbstractCacheUnit

Returns:

Throws:

IOException

remove

public void remove()
            throws IOException

remove all tuples

Throws:

IOException

size

public long size()
          throws IOException,
EDBException

number of tuples

Returns:

Throws:

IOException

EDBException

destroy

public void destroy()

destroy it. Used in cache manager

finalize

public void finalize()

finally destroy it