Package jadex.rules.rulesystem.rete.nodes

Class ReteNode

java.lang.Object

jadex.rules.rulesystem.rete.nodes.AbstractNode

jadex.rules.rulesystem.rete.nodes.ReteNode

All Implemented Interfaces:

INode, IObjectSourceNode, java.lang.Cloneable

public class ReteNode
extends AbstractNode
implements IObjectSourceNode

ReteNode implementation of the IConditionSystem.

Field Summary

Fields

Modifier and Type	Field	Description
protected ReteBuilder	builder	The rete builder.
protected int	changecnt
protected boolean	check	Do a consistency check after each state change (requires asserts).
protected java.util.List	checked
protected java.util.Map	indirectnodesets	Indirectly affected nodes for an attribute type (cached for speed).
protected boolean	inited	For debugging: node is inited and network must not be changed anymore.
protected InitialFactNode	initialfact	The initial fact node (if any).
protected int	nodecounter	The node counter in this network.
protected AttributeSet	relevants	The set of relevant attributes.
protected java.util.Map	terminalnodes	The terminal nodes (IRule -> Node).
protected java.util.Map	typenodes	The type nodes.
protected java.util.Map	typenodesets	Matching nodes for each (sub)type (cached for speed).

Fields inherited from class jadex.rules.rulesystem.rete.nodes.AbstractNode

clones, nodeid

Constructor Summary

Constructors

Constructor	Description
ReteNode()	Create a new rete system.

Method Summary

Modifier and Type	Method	Description
void	addObject(java.lang.Object id, OAVObjectType type, IOAVState state, ReteMemory mem, AbstractAgenda agenda)	Tell the condition system about a new object in the state.
void	addObjectConsumer(IObjectConsumerNode node)	Add an object consumer node.
void	addRule(IRule rule)	Add a rule to the network.
protected boolean	checkConsistency(ReteMemory mem)	Check consistency of Rete network/memory.
java.lang.Object	createNodeMemory(IOAVState state)	Create the node memory.
protected void	doClone(java.lang.Object theclone)	Do clone makes a deep clone without regarding cycles.
ReteBuilder	getBuilder()	Get the builder.
AttributeSet	getIndirectAttributes()	Get the set of indirect attribute types.
protected java.util.Set	getIndirectNodes(OAVAttributeType attrtype, OAVTypeModel tmodel)	Get the set of indirectly affected nodes for an attribute type.
InitialFactNode	getInitialFactNode()	Get the initial fact node (if any).
int	getNextNodeId()	Get the next nodecounter.
int	getNodeCount()	Get the number of nodes in the network.
java.util.Collection	getNodeMemory(ReteMemory mem)	Get the memory for this node.
IObjectConsumerNode[]	getObjectConsumers()	Get all object consumer nodes.
AttributeSet	getRelevantAttributes()	Get the set of relevant attribute types.
TerminalNode	getTerminalNode(IRule rule)	Set the terminal node for a rule.
TypeNode	getTypeNode(OAVObjectType type)	Get the node for a type.
protected java.util.Set	getTypeNodes(OAVObjectType type)	Get the set of matching type nodes for a (sub)type.
void	modifyIndirectObject(java.lang.Object object, OAVAttributeType type, java.lang.Object oldvalue, java.lang.Object newvalue, IOAVState state, ReteMemory mem, AbstractAgenda agenda)	Propagate an indirect object change to this node.
void	modifyObject(java.lang.Object id, OAVObjectType type, OAVAttributeType attr, java.lang.Object oldvalue, java.lang.Object newvalue, IOAVState state, ReteMemory mem, AbstractAgenda agenda)	Tell the condition system about a modified object in the state.
void	putTerminalNode(TerminalNode node)	Set the terminal node for a rule.
void	removeObject(java.lang.Object id, OAVObjectType type, IOAVState state, ReteMemory mem, AbstractAgenda agenda)	Tell the condition system about a removed object in the state.
void	removeObjectConsumer(IObjectConsumerNode node)	Remove an object consumer.
void	removeRule(IRule rule)	Remove a rule from the network.
void	setInited(boolean inited)	Set the inited state.

Methods inherited from class jadex.rules.rulesystem.rete.nodes.AbstractNode

checkNodeConsistency, clone, equals, getNodeId, hashCode, toString, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface jadex.rules.rulesystem.rete.nodes.INode

checkNodeConsistency, clone, getNodeId

Field Detail

typenodes

protected java.util.Map typenodes

The type nodes.

typenodesets

protected java.util.Map typenodesets

Matching nodes for each (sub)type (cached for speed).

indirectnodesets

protected volatile java.util.Map indirectnodesets

Indirectly affected nodes for an attribute type (cached for speed).

initialfact

protected InitialFactNode initialfact

The initial fact node (if any).

terminalnodes

protected java.util.Map terminalnodes

The terminal nodes (IRule -> Node).

builder

protected ReteBuilder builder

The rete builder.

relevants

protected volatile AttributeSet relevants

The set of relevant attributes.

check

protected boolean check

Do a consistency check after each state change (requires asserts).

nodecounter

protected int nodecounter

The node counter in this network.

inited

protected boolean inited

For debugging: node is inited and network must not be changed anymore.

changecnt

protected int changecnt

checked

protected java.util.List checked

Constructor Detail

ReteNode

public ReteNode()

Create a new rete system.

Parameters:

state - The state.

Method Detail

addObject

public void addObject(java.lang.Object id,
                      OAVObjectType type,
                      IOAVState state,
                      ReteMemory mem,
                      AbstractAgenda agenda)

Tell the condition system about a new object in the state.

Parameters:

object - The new object.

removeObject

public void removeObject(java.lang.Object id,
                         OAVObjectType type,
                         IOAVState state,
                         ReteMemory mem,
                         AbstractAgenda agenda)

Tell the condition system about a removed object in the state.

Parameters:

object - The removed object.

modifyObject

public void modifyObject(java.lang.Object id,
                         OAVObjectType type,
                         OAVAttributeType attr,
                         java.lang.Object oldvalue,
                         java.lang.Object newvalue,
                         IOAVState state,
                         ReteMemory mem,
                         AbstractAgenda agenda)

Tell the condition system about a modified object in the state.

Parameters:

object - The new object.

modifyIndirectObject

public void modifyIndirectObject(java.lang.Object object,
                                 OAVAttributeType type,
                                 java.lang.Object oldvalue,
                                 java.lang.Object newvalue,
                                 IOAVState state,
                                 ReteMemory mem,
                                 AbstractAgenda agenda)

Propagate an indirect object change to this node.

Specified by:

modifyIndirectObject in interface INode

Parameters:

object - The changed object.

addRule

public void addRule(IRule rule)

Add a rule to the network.

Parameters:

rule - The rule to add.

removeRule

public void removeRule(IRule rule)

Remove a rule from the network.

Parameters:

rule - The rule to remove.

putTerminalNode

public void putTerminalNode(TerminalNode node)

Set the terminal node for a rule.

Parameters:

rule - The rule.

node - The node.

getTerminalNode

public TerminalNode getTerminalNode(IRule rule)

Set the terminal node for a rule.

Parameters:

rule - The rule.

node - The node.

getNodeCount

public int getNodeCount()

Get the number of nodes in the network.

Returns:

The number of nodes.

addObjectConsumer

public void addObjectConsumer(IObjectConsumerNode node)

Add an object consumer node.

Specified by:

addObjectConsumer in interface IObjectSourceNode

Parameters:

node - A new consumer node.

removeObjectConsumer

public void removeObjectConsumer(IObjectConsumerNode node)

Remove an object consumer.

Specified by:

removeObjectConsumer in interface IObjectSourceNode

Parameters:

node - The consumer node.

getNodeMemory

public java.util.Collection getNodeMemory(ReteMemory mem)

Get the memory for this node.

Specified by:

getNodeMemory in interface INode

Specified by:

getNodeMemory in interface IObjectSourceNode

Returns:

The memory.

getObjectConsumers

public IObjectConsumerNode[] getObjectConsumers()

Get all object consumer nodes.

Specified by:

getObjectConsumers in interface IObjectSourceNode

Returns:

All object consumer nodes.

getTypeNode

public TypeNode getTypeNode(OAVObjectType type)

Get the node for a type.

Parameters:

type - The type.

Returns:

The type node (if any).

getInitialFactNode

public InitialFactNode getInitialFactNode()

Get the initial fact node (if any).

createNodeMemory

public java.lang.Object createNodeMemory(IOAVState state)

Create the node memory.

Specified by:

createNodeMemory in interface INode

Parameters:

state - The state.

Returns:

The node memory.

getRelevantAttributes

public AttributeSet getRelevantAttributes()

Get the set of relevant attribute types.

Specified by:

getRelevantAttributes in interface INode

getIndirectAttributes

public AttributeSet getIndirectAttributes()

Get the set of indirect attribute types. I.e. attributes of objects, which are not part of an object conditions (e.g. for chained extractors)

Specified by:

getIndirectAttributes in interface INode

Returns:

The relevant attribute types.

getBuilder

public ReteBuilder getBuilder()

Get the builder.

Returns:

The rete builder.

getTypeNodes

protected java.util.Set getTypeNodes(OAVObjectType type)

Get the set of matching type nodes for a (sub)type.

Parameters:

type - The object type.

Returns:

The set of type nodes for that object type.

getIndirectNodes

protected java.util.Set getIndirectNodes(OAVAttributeType attrtype,
                                         OAVTypeModel tmodel)

Get the set of indirectly affected nodes for an attribute type.

Parameters:

attrtype - The attribute type.

tmodel - The OAV type model.

Returns:

The set of indirectly affected nodes for that attribute type.

doClone

protected void doClone(java.lang.Object theclone)

Do clone makes a deep clone without regarding cycles.

Specified by:

doClone in class AbstractNode

Parameters:

clone - The clone.

checkConsistency

protected boolean checkConsistency(ReteMemory mem)

Check consistency of Rete network/memory. For debugging. Only performs some simple checks and does not assure complete consistency.

getNextNodeId

public int getNextNodeId()

Get the next nodecounter.

Returns:

The id for the next node.

setInited

public void setInited(boolean inited)

Set the inited state.