Package jadex.rules.rulesystem.rete.nodes

Class BetaMemory

java.lang.Object

jadex.rules.rulesystem.rete.nodes.BetaMemory

Direct Known Subclasses:

NotMemory

public class BetaMemory
extends java.lang.Object

Memory for a beta node. It consists of: - indexed memories for each equal constraint (optional for speed) - a result memory (collection)

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	BetaMemory.IndexedConstraintMemory	A memory for an indexed constraint.

Field Summary

Fields

Modifier and Type	Field	Description
protected java.util.Set	resultmem	The result memory.
protected IOAVState	state	The state.
protected java.util.Map	xmems	The indexed memories (indexed constraint evaluator -> memory).

Constructor Summary

Constructors

Constructor	Description
BetaMemory(IOAVState state)	Create a new beta memory.

Method Summary

Modifier and Type	Method	Description
void	addObject(java.lang.Object value, java.lang.Object object, ConstraintIndexer ci)	Add an value -> object pair to the object index.
boolean	addResultTuple(Tuple tuple)	Add a tuple to the result.
void	addTuple(java.lang.Object value, Tuple tuple, ConstraintIndexer ci)	Add an value -> object pair to the tuple index.
protected BetaMemory.IndexedConstraintMemory	getIndexedMemory(ConstraintIndexer ci)	Get the indexed memory per constraint indexer.
java.util.Set	getObjects(Tuple tuple, ConstraintIndexer ci)	Get the indexed objects per tuple.
java.util.Collection	getResultMemory()	Get the result memory.
java.util.Set	getTuples(java.lang.Object object, ConstraintIndexer ci)	Get the indexed tuples per object.
void	removeObject(java.lang.Object object, ConstraintIndexer ci)	Remove an object from the object index.
boolean	removeResultTuple(Tuple tuple)	Remove from the result.
void	removeTuple(Tuple tuple, ConstraintIndexer ci)	Remove an value -> object pair from the tuple index.
int	size()	Get the size of the beta memory (including indexed memories).
java.lang.String	toString()	Get the string representation.

Methods inherited from class java.lang.Object

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

Field Detail

state

protected IOAVState state

The state.

xmems

protected java.util.Map xmems

The indexed memories (indexed constraint evaluator -> memory).

resultmem

protected java.util.Set resultmem

The result memory.

Constructor Detail

BetaMemory

public BetaMemory(IOAVState state)

Create a new beta memory.

Parameters:

node - The beta node.

Method Detail

addResultTuple

public boolean addResultTuple(Tuple tuple)

Add a tuple to the result.

Parameters:

tuple - The result node.

Returns:

True, if could be added.

removeResultTuple

public boolean removeResultTuple(Tuple tuple)

Remove from the result.

Parameters:

tuple - The tuple.

Returns:

True, if could be removed.

getResultMemory

public java.util.Collection getResultMemory()

Get the result memory.

Returns:

The result memory.

getObjects

public java.util.Set getObjects(Tuple tuple,
                                ConstraintIndexer ci)

Get the indexed objects per tuple.

Parameters:

tuple - The indexed tuple.

ci - The constraint indexer.

getTuples

public java.util.Set getTuples(java.lang.Object object,
                               ConstraintIndexer ci)

Get the indexed tuples per object.

Parameters:

object - The indexed object.

ci - The constraint indexer.

addObject

public void addObject(java.lang.Object value,
                      java.lang.Object object,
                      ConstraintIndexer ci)

Add an value -> object pair to the object index.

Parameters:

value - The value.

object - The object.

ci - The constraint indexer.

removeObject

public void removeObject(java.lang.Object object,
                         ConstraintIndexer ci)

Remove an object from the object index.

Parameters:

object - The object.

ci - The constraint indexer.

addTuple

public void addTuple(java.lang.Object value,
                     Tuple tuple,
                     ConstraintIndexer ci)

Add an value -> object pair to the tuple index.

Parameters:

value - The value.

tuple - The tuple.

ci - The constraint indexer.

removeTuple

public void removeTuple(Tuple tuple,
                        ConstraintIndexer ci)

Remove an value -> object pair from the tuple index.

Parameters:

object - The object.

ci - The constraint indexer.

getIndexedMemory

protected BetaMemory.IndexedConstraintMemory getIndexedMemory(ConstraintIndexer ci)

Get the indexed memory per constraint indexer.

Parameters:

ci - The constraint indexer.

size

public int size()

Get the size of the beta memory (including indexed memories).

Returns:

The size of the memory.

toString

public java.lang.String toString()

Get the string representation.

Overrides:

toString in class java.lang.Object

Returns:

The string representation.