biz.hammurapi.rules
Class KnowledgeMaximizingHandleManager

java.lang.Object
  biz.hammurapi.config.ComponentBase
      biz.hammurapi.rules.KnowledgeMaximizingHandleManager

All Implemented Interfaces:

biz.hammurapi.config.Component, biz.hammurapi.config.Context, biz.hammurapi.metrics.MeasurementCollector, biz.hammurapi.metrics.MeasurementConsumer, HandleManager, Negatable

public class KnowledgeMaximizingHandleManager
extends biz.hammurapi.config.ComponentBase
implements HandleManager, biz.hammurapi.config.Component

Handle manager implementation which keeps handles in memory. Objects are compared by eqals(). This handle manager doesn't hold facts which superced each other, but retains only superceeding fact (e.g. if Mother supercedes Parent then Parent will not be retained in the manager when Mother is added).

Version:

${Revision}

Author:

Pavel Vlasov

Field Summary

Fields inherited from class biz.hammurapi.config.ComponentBase

owner

Constructor Summary

KnowledgeMaximizingHandleManager()

Method Summary

javax.rules.Handle	addObject(java.lang.Object object) Adds new object to the manager if this object is not already there and there is no superceding object.
void	clear() Removes all mappings.
boolean	contains(javax.rules.Handle handle)
java.util.Collection	getHandles()
java.lang.Object	getObject(javax.rules.Handle handle) Retrieves object by handle
java.util.Collection	getObjects()
boolean	isNegatedBy(Negator negator)
void	rebind(javax.rules.Handle handle, java.lang.Object object) Rebinds handle to another object
void	remove(javax.rules.Handle handle) Removes object entry by key.
void	remove(java.lang.Object obj) Removes object entry by value;
void	setStorageReference(java.lang.String storageReference) Path to object storage.
void	start()
void	stop()

Methods inherited from class biz.hammurapi.config.ComponentBase

addMeasurement, get, getChild, getMeasurementConsumer, getOwner, getOwner, setMeasurementConsumer, setOwner

Methods inherited from class java.lang.Object

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

Methods inherited from interface biz.hammurapi.config.Component

setOwner

Constructor Detail

KnowledgeMaximizingHandleManager

public KnowledgeMaximizingHandleManager()

Method Detail

setStorageReference

public void setStorageReference(java.lang.String storageReference)

Path to object storage.

Parameters:

storageReference -

addObject

public javax.rules.Handle addObject(java.lang.Object object)

Adds new object to the manager if this object is not already there and there is no superceding object. If object being added supercedes any objects in the manager these objects will be removed.

Specified by:

addObject in interface HandleManager

Returns:

getObject

public java.lang.Object getObject(javax.rules.Handle handle)

Description copied from interface: HandleManager

Retrieves object by handle

Specified by:

getObject in interface HandleManager

Returns:

getObjects

public java.util.Collection getObjects()

Specified by:

getObjects in interface HandleManager

Returns:

All objects with handles.

getHandles

public java.util.Collection getHandles()

Specified by:

getHandles in interface HandleManager

Returns:

All handles.

remove

public void remove(javax.rules.Handle handle)

Description copied from interface: HandleManager

Removes object entry by key.

Specified by:

remove in interface HandleManager

contains

public boolean contains(javax.rules.Handle handle)

Specified by:

contains in interface HandleManager

Returns:

True there is a mapping with given handle in the manager.

rebind

public void rebind(javax.rules.Handle handle,
                   java.lang.Object object)

Description copied from interface: HandleManager

Rebinds handle to another object

Specified by:

rebind in interface HandleManager

remove

public void remove(java.lang.Object obj)

Description copied from interface: HandleManager

Removes object entry by value;

Specified by:

remove in interface HandleManager

clear

public void clear()

Description copied from interface: HandleManager

Removes all mappings.

Specified by:

clear in interface HandleManager

start

public void start()
           throws biz.hammurapi.config.ConfigurationException

Specified by:

start in interface biz.hammurapi.config.Component

Throws:

biz.hammurapi.config.ConfigurationException

stop

public void stop()
          throws biz.hammurapi.config.ConfigurationException

Specified by:

stop in interface biz.hammurapi.config.Component

Throws:

biz.hammurapi.config.ConfigurationException

isNegatedBy

public boolean isNegatedBy(Negator negator)

Specified by:

isNegatedBy in interface Negatable

Returns:

true if negator negates this instance.