com.ibm.xtools.mmi.core.cache

Class MMIResourceCache

java.lang.Object

com.ibm.xtools.mmi.core.cache.MMIResourceCache

public class MMIResourceCache
extends java.lang.Object

This class provides the implementation for a cache of mapped objects.

Clients can cache newly created target elements, Recache existing target elements with a new StructuredReferenceKey, Get cached target elements for a given StructuredReferenceKey

Constructor Summary

Constructors

Constructor and Description
MMIResourceCache()

Method Summary

Modifier and Type	Method and Description
static void	cache(org.eclipse.emf.transaction.TransactionalEditingDomain domain, org.eclipse.emf.ecore.EObject element) Caches the specified target element using its StructuredReference as a key.
static void	dump(org.eclipse.emf.transaction.TransactionalEditingDomain domain) Dumps the cache.
static org.eclipse.emf.ecore.EObject	getCachedElement(org.eclipse.emf.transaction.TransactionalEditingDomain domain, StructuredReferenceKey key) Retrieves the cached element for a given key.
static int	getSize(org.eclipse.emf.transaction.TransactionalEditingDomain domain) Returns the size of the resource cache.
static void	recache(org.eclipse.emf.transaction.TransactionalEditingDomain domain, StructuredReferenceKey oldKey, StructuredReferenceKey newKey) Recaches a cached element for a given oldKey with a newKey.

Methods inherited from class java.lang.Object

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

Constructor Detail

MMIResourceCache

public MMIResourceCache()

Method Detail

getCachedElement

public static org.eclipse.emf.ecore.EObject getCachedElement(org.eclipse.emf.transaction.TransactionalEditingDomain domain,
                                                             StructuredReferenceKey key)

Retrieves the cached element for a given key. The key is based on StructuredReference used to activate the target object.

Parameters:

domain - TransactionalEditingDomain that contains the ResourceSet of the EObject's Resource

key - StructuredReferenceKey to locate the target element in the cache.

Returns:

The target element if cached, else null.

cache

public static void cache(org.eclipse.emf.transaction.TransactionalEditingDomain domain,
                         org.eclipse.emf.ecore.EObject element)

Caches the specified target element using its StructuredReference as a key. Caching won't work if the element doesn't exist in resource.

Parameters:

domain - TransactionalEditingDomain containing the MMI resource in which the EObject element will be cached

element - ITarget to be cached. The element passed should implement ITarget.

recache

public static void recache(org.eclipse.emf.transaction.TransactionalEditingDomain domain,
                           StructuredReferenceKey oldKey,
                           StructuredReferenceKey newKey)

Recaches a cached element for a given oldKey with a newKey.

Parameters:

domain - TransactionalEditingDomain containing the MMI resource in which the EObject element will be recached

oldKey - Old Key for the mapped element

newKey - New Key for the mapped element

getSize

public static int getSize(org.eclipse.emf.transaction.TransactionalEditingDomain domain)

Returns the size of the resource cache.

This is for testing only!

Parameters:

domain - TransactionalEditingDomain of the cache

Returns:

number of elements in the cache

dump

public static void dump(org.eclipse.emf.transaction.TransactionalEditingDomain domain)

Dumps the cache.

This is for testing only!

Parameters:

domain - TransactionalEditingDomain of the cache