de.hybris.platform.persistence

Class ItemCacheKey

java.lang.Object

de.hybris.platform.persistence.ItemCacheKey

All Implemented Interfaces:

java.lang.Cloneable

Direct Known Subclasses:

ItemACLCacheKey, ItemPropertyCacheKey

public abstract class ItemCacheKey
extends java.lang.Object
implements java.lang.Cloneable

using this key object, transient caches can be stored for an Item using its methods ItemEJB.getCachedValueForModification(de.hybris.platform.persistence.ItemCacheKey) and ItemEJB.getCachedValueForReading(de.hybris.platform.persistence.ItemCacheKey)

Constructor Summary

Constructors

Modifier	Constructor and Description
	ItemCacheKey()
protected	ItemCacheKey(java.lang.Object value)

Method Summary

Modifier and Type	Method and Description
protected abstract java.lang.Object	cloneValue(java.lang.Object value) this method should clone a cached value object.
protected abstract java.lang.Object	computeValue(ItemEJB item) initially creates the cached data object for a specified item.
protected abstract java.lang.Object	createUnmodifiableViewOfValue(java.lang.Object value) it's ok to return the result of getValue in this method; otherwise, the returned object has to reflect subsequent changes of the object returned by getValue
protected void	dispose(boolean inRemove) called when this cache key object is remove from cache.
ItemCacheKey	getCopy() create a copy of this ItemCacheKey; must be public for hjmp
protected abstract java.lang.Object	getQualifier()
protected java.lang.Object	getValueForModification(ItemEJB item)
protected java.lang.Object	getValueForReading(ItemEJB item)
protected java.lang.Object	getValueForReadingIfAvailable(ItemEJB item)
protected java.lang.Object	getValueInternal()
protected abstract boolean	isValid(ItemEJB item)

Methods inherited from class java.lang.Object

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

Constructor Detail

ItemCacheKey

public ItemCacheKey()

ItemCacheKey

protected ItemCacheKey(java.lang.Object value)

Method Detail

getCopy

public final ItemCacheKey getCopy()

create a copy of this ItemCacheKey; must be public for hjmp

getValueInternal

protected final java.lang.Object getValueInternal()

getQualifier

protected abstract java.lang.Object getQualifier()

Returns:

an key for the CachedValue that is unique within the Item instance

isValid

protected abstract boolean isValid(ItemEJB item)

Returns:

true if the cache key object is still valid for the given item. this is called each time when the cache key is retrieved.

dispose

protected void dispose(boolean inRemove)

called when this cache key object is remove from cache.

computeValue

protected abstract java.lang.Object computeValue(ItemEJB item)

initially creates the cached data object for a specified item. this method is only called once for one ItemCacheKey instance.

getValueForReading

protected final java.lang.Object getValueForReading(ItemEJB item)

getValueForReadingIfAvailable

protected final java.lang.Object getValueForReadingIfAvailable(ItemEJB item)

getValueForModification

protected final java.lang.Object getValueForModification(ItemEJB item)

cloneValue

protected abstract java.lang.Object cloneValue(java.lang.Object value)

this method should clone a cached value object. it will be called during getCopy() only if this ItemCacheKey object already holds a cached value object.

createUnmodifiableViewOfValue

protected abstract java.lang.Object createUnmodifiableViewOfValue(java.lang.Object value)

it's ok to return the result of getValue in this method; otherwise, the returned object has to reflect subsequent changes of the object returned by getValue