net.walend.lyophil.memory
Class MemStorage

java.lang.Object
  |
  +--net.walend.lyophil.memory.MemStorage

All Implemented Interfaces:

java.io.Serializable

public class MemStorage

extends java.lang.Object

implements java.io.Serializable

An in-memory storage point.

Since:

20010103

Author:

David Walend

Field Summary

protected Caster	caster
protected MultiValueIndex	classIndex
protected MemSet	memSet
static java.lang.String	MEMSTORAGE
protected SingleValueIndex	typableKeyIndex

Constructor Summary

MemStorage()

Method Summary

void	clear()
boolean	containsTypableKey(java.lang.String key) Returns true if the typable key is in use already.
int	count()
int	countByClass(java.lang.Class interf) Count the number of freezables that implement this interf.
SetOfFreezables	findByClass(java.lang.Class interf) Returns the set of Freezables that can be cast to interf.
Freezable	findByIdentifier(java.io.Serializable identifier) Freeze and findByIdentifier methods in MemStorage always return the same instance of the object.
HasTypableKey	findByTypableKey(java.lang.String key) Returns the Freezable that has the typable key
java.io.Serializable	findIDForTypableKey(java.lang.String key)
void	freeze(Freezable victem) Put the victem in all the Maps.
SetOfFreezables	getAll()
protected void	init() This method should be called by the MemStorage constructor only.
boolean	isAvailable(java.io.Serializable identifier)
void	throwOut(java.io.Serializable identifier) Remove this victem from all the Maps

Methods inherited from class java.lang.Object

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

Field Detail

MEMSTORAGE

public static final java.lang.String MEMSTORAGE

memSet

protected MemSet memSet

classIndex

protected MultiValueIndex classIndex

typableKeyIndex

protected SingleValueIndex typableKeyIndex

caster

protected Caster caster

Constructor Detail

MemStorage

public MemStorage()

Method Detail

init

protected void init()

This method should be called by the MemStorage constructor only. It creates a MemSet of size 7 to use inside this Freezer. Override this method if you'd like to use a weak Set, for example.

freeze

public void freeze(Freezable victem)

Put the victem in all the Maps.

Freeze and findByIdentifier methods in MemStorage always return the same instance of the object. This behavior is appropirate for client object caches, but not for safe transactions.

findByIdentifier

public Freezable findByIdentifier(java.io.Serializable identifier)
                           throws NotInFreezerException

Freeze and findByIdentifier methods in MemStorage always return the same instance of the object. This behavior is appropirate for client object caches, but not for safe transactions.

throwOut

public void throwOut(java.io.Serializable identifier)
              throws NotInFreezerException

Remove this victem from all the Maps

isAvailable

public boolean isAvailable(java.io.Serializable identifier)

getAll

public SetOfFreezables getAll()

clear

public void clear()

count

public int count()

countByClass

public int countByClass(java.lang.Class interf)

Count the number of freezables that implement this interf.

findByClass

public SetOfFreezables findByClass(java.lang.Class interf)

Returns the set of Freezables that can be cast to interf.

Throws:

PersistenceFailureException

findByTypableKey

public HasTypableKey findByTypableKey(java.lang.String key)
                               throws NotInFreezerException

Returns the Freezable that has the typable key

Throws:

PersistenceFailureException

NotInFreezerException

findIDForTypableKey

public java.io.Serializable findIDForTypableKey(java.lang.String key)
                                         throws NotInFreezerException

containsTypableKey

public boolean containsTypableKey(java.lang.String key)

Returns true if the typable key is in use already.

Throws:

PersistenceFailureException