Module org.eclipse.persistence.core
Package org.eclipse.persistence.internal.identitymaps
package org.eclipse.persistence.internal.identitymaps
-
ClassDescriptionPurpose: Caches objects, and allows their retrieval by their primary key.Abstract
Enumeration
interface implementation forIdentityMap
interface.Defines a wrapper for a primary key (Id) to use as a key in the cache.Purpose: A fixed size LRU cachePurpose: Container class for storing objects in an IdentityMap.Purpose: A FullIdentityMap holds all objects stored within it for the life of the application.Purpose: A HardCacheWeakIdentityMap is identical to the weak identity map, however the weak reference can be a performance problem for some types of apps because it can cause too much garbage collection of objects read causing them to be re-read and re-built (this defeats the purpose of the cache).Purpose: Provides the interface for IdentityMap interaction.Allows to iterate overCacheKey
instances stored in theIdentityMap
.Purpose: Maintain identity maps for domain classes mapped with EclipseLink.Purpose: Provides the capability to insert CacheKeys into a Linked List.Purpose: Provide the capability to not cache objects at all.Purpose: Container class for storing objects in an IdentityMap.Purpose: A SoftCacheWeakIdentityMap is identical to the WeakIdentityMap, however the weak reference can be a performance problem for some types of apps because it can cause too much garbage collection of objects read causing them to be re-read and re-built (this defeats the purpose of the cache).Purpose: A SoftIdentityMap holds all objects referenced by the application.Unit of work specific identity map which avoid additional overhead not required in unit of work, such as locking and synchronization.Purpose: Container class for storing objects in an IdentityMap.Purpose: A WeakIdentityMap holds all objects referenced by the application only.