org.andromda.core.metafacade

Class MetafacadeCache

java.lang.Object

org.andromda.core.metafacade.MetafacadeCache

All Implemented Interfaces:

Serializable

public final class MetafacadeCache
extends Object
implements Serializable

A global cache for metafacades. Used by the MetafacadeFactorywhen constructing or retrieving metafacade instances. If the cache constains the metafacade it should not be constructed again.

Author:

Chad Brandon

See Also:

Serialized Form

Method Summary

Methods

Modifier and Type	Method and Description
void	add(Object mappingObject, MetafacadeBase metafacade) Adds the metafacade to the cache according to first mappingObject, second the metafacade, and finally by the current namespace.
void	clear() Clears the cache of any metafacades
MetafacadeBase	get(Object mappingObject, Class metafacadeClass) Returns the metafacade from the metafacade cache.
static MetafacadeCache	newInstance() Constructs a new instance of this class.
void	setNamespace(String namespace) Sets the namespace to which the cache currently applies.
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

newInstance

public static MetafacadeCache newInstance()

Constructs a new instance of this class.

Returns:

the new instance

setNamespace

public final void setNamespace(String namespace)

Sets the namespace to which the cache currently applies.

Parameters:

namespace - the current namespace.

get

public final MetafacadeBase get(Object mappingObject,
                 Class metafacadeClass)

Returns the metafacade from the metafacade cache. The Metafacades are cached first by according to its mappingObject, next the metafacadeClass, and finally by the current namespace.

Metafacades must be cached in order to keep track of the state of its validation. If we keep creating a new one each time, we can never tell whether or not a metafacade has been previously validated. Not to mention tremendous performance gains.

Parameters:

mappingObject - the object to which the mapping applies

metafacadeClass - the class of the metafacade.

Returns:

MetafacadeBase stored in the cache.

add

public final void add(Object mappingObject,
       MetafacadeBase metafacade)

Adds the metafacade to the cache according to first mappingObject, second the metafacade, and finally by the current namespace.

Parameters:

mappingObject - the mappingObject for which to cache the metafacade.

metafacade - the metafacade to cache.

clear

public final void clear()

Clears the cache of any metafacades

toString

public String toString()

Overrides:

toString in class Object

See Also:

Object.toString()