Package jadex.rules.state.javaimpl

Class OAVMixedWeakState

java.lang.Object

jadex.rules.state.javaimpl.OAVAbstractState

jadex.rules.state.javaimpl.OAVMixedWeakState

All Implemented Interfaces:

IOAVState

public class OAVMixedWeakState
extends OAVAbstractState

An object holding the state as OAV triples (object, attribute, value).

Field Summary

Fields

Modifier and Type	Field	Description
protected java.util.Map	objects	The objects table (oid -> content map).
protected java.util.Map	weakobjects	The weak objects (object id -> content map).

Fields inherited from class jadex.rules.state.javaimpl.OAVAbstractState

beanlistenercnt, deletedobjects, eventhandler, generator, javaidentity, javaobjects, nocheck, objectusages, PCL, pcls, profiler, rootobjects, substates, synchronizator, tmodel, TYPE

Constructor Summary

Constructors

Constructor	Description
OAVMixedWeakState(OAVTypeModel tmodel)	Create a new empty OAV state representation.

Method Summary

Modifier and Type	Method	Description
void	addExternalObjectUsage(java.lang.Object id, java.lang.Object external)	Add an external usage of a state object (oid).
protected boolean	checkValidStateObjectRead(java.lang.Object id)	Test if reading the object (oid) is allowed.
protected java.util.Map	getObject0(java.lang.Object id)	Get an object map for its id.
protected boolean	internalContainsObject(java.lang.Object id)	Test if an object is contained in the state.
protected java.util.Map	internalCreateObject(java.lang.Object id)	Internally create an object.
protected java.util.Map	internalGetObjectContent(java.lang.Object id)	Get the object content of an object.
protected java.util.Set	internalGetObjects()	Get a set of the internal state objects.
protected int	internalObjectsSize()	Test how many object are contained in the state.
protected java.util.Map	internalRemoveObject(java.lang.Object id)	Remove an object from the state objects.
protected boolean	isExternallyUsed(java.lang.Object id)	Test if an object is externally used.
void	removeExternalObjectUsage(java.lang.Object id, java.lang.Object external)	Remove an external usage of a state object (oid).
protected void	removeObject(java.lang.Object id)	Ultimately remove an object (oid), when there are no more external or internal references.

Methods inherited from class jadex.rules.state.javaimpl.OAVAbstractState

addAttributeValue, addJavaRootObject, addObjectUsage, addStateListener, addSubstate, checkMultiplicity, checkMultiplicity, checkTypeDefined, checkTypeHasAttribute, checkValidStateObject, checkValidStateValue, checkValueCompatibility, containsKey, containsObject, createIdGenerator, createObject, createObject, createRootObject, deregisterValue, dispose, dropObject, equals, expungeStaleObjects, findCycle, findCycleForValue, getAttributeKeys, getAttributeValue, getAttributeValue, getAttributeValues, getDeepObjects, getObject, getObjects, getObjectUsages, getProfiler, getReferencingObjects, getRootObjects, getSize, getSubstates, getSynchronizator, getType, getTypeModel, getUnreferencedObjects, internalDropObject, isIdentifier, isJavaIdentity, isManaged, isReachable, notifyEventListeners, registerValue, removeAttributeValue, removeJavaRootObject, removeObjectUsage, removeStateListener, setAttributeValue, setProfiler, setSynchronizator, toString

Methods inherited from class java.lang.Object

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

Field Detail

objects

protected java.util.Map objects

The objects table (oid -> content map).

weakobjects

protected java.util.Map weakobjects

The weak objects (object id -> content map).

Constructor Detail

OAVMixedWeakState

public OAVMixedWeakState(OAVTypeModel tmodel)

Create a new empty OAV state representation.

Method Detail

removeObject

protected void removeObject(java.lang.Object id)

Ultimately remove an object (oid), when there are no more external or internal references.

Overrides:

removeObject in class OAVAbstractState

addExternalObjectUsage

public void addExternalObjectUsage(java.lang.Object id,
                                   java.lang.Object external)

Add an external usage of a state object (oid). This prevents the oav object of being garbage collected as long as external references are present.

Specified by:

addExternalObjectUsage in interface IOAVState

Specified by:

addExternalObjectUsage in class OAVAbstractState

Parameters:

id - The oav object id.

external - The user object.

removeExternalObjectUsage

public void removeExternalObjectUsage(java.lang.Object id,
                                      java.lang.Object external)

Remove an external usage of a state object (oid). This allows the oav object of being garbage collected when no further external references and no internal references are present.

Specified by:

removeExternalObjectUsage in interface IOAVState

Specified by:

removeExternalObjectUsage in class OAVAbstractState

Parameters:

id - The oav object id.

external - The state external object.

isExternallyUsed

protected boolean isExternallyUsed(java.lang.Object id)

Test if an object is externally used.

Specified by:

isExternallyUsed in class OAVAbstractState

Parameters:

id - The id.

Returns:

True, if externally used.

getObject0

protected java.util.Map getObject0(java.lang.Object id)

Get an object map for its id.

Overrides:

getObject0 in class OAVAbstractState

Parameters:

id - The id.

Returns:

The object map.

checkValidStateObjectRead

protected boolean checkValidStateObjectRead(java.lang.Object id)

Test if reading the object (oid) is allowed. Reading is allowed on removed objects as long as there are external references.

Overrides:

checkValidStateObjectRead in class OAVAbstractState

Parameters:

id - The object (oid).

Returns:

True, if valid.

internalCreateObject

protected java.util.Map internalCreateObject(java.lang.Object id)

Internally create an object.

Specified by:

internalCreateObject in class OAVAbstractState

Parameters:

id - The id.

Returns:

The content map of the new object.

internalRemoveObject

protected java.util.Map internalRemoveObject(java.lang.Object id)

Remove an object from the state objects.

Specified by:

internalRemoveObject in class OAVAbstractState

Parameters:

id - The id.

Returns:

The content map of the object.

internalGetObjectContent

protected java.util.Map internalGetObjectContent(java.lang.Object id)

Get the object content of an object.

Specified by:

internalGetObjectContent in class OAVAbstractState

Parameters:

id - The id.

Returns:

The content map of the object.

internalContainsObject

protected boolean internalContainsObject(java.lang.Object id)

Test if an object is contained in the state.

Specified by:

internalContainsObject in class OAVAbstractState

Parameters:

id - The id.

Returns:

True, if object is contained.

internalObjectsSize

protected int internalObjectsSize()

Test how many object are contained in the state.

Specified by:

internalObjectsSize in class OAVAbstractState

Returns:

The number of objects.

internalGetObjects

protected java.util.Set internalGetObjects()

Get a set of the internal state objects.

Specified by:

internalGetObjects in class OAVAbstractState

Returns:

A set of the state objects.