ch.jalu.injector.handlers.instantiation

Class InstantiationCache

java.lang.Object

ch.jalu.injector.handlers.instantiation.InstantiationCache

All Implemented Interfaces:

Handler

public class InstantiationCache
extends Object
implements Handler

Primitive "cache" for instantiation methods. It is recommended to use a more suitable cache structure instead, e.g. with Guava's CacheBuilder. As such, this handler is not included by default.

Field Summary

Fields

Modifier and Type	Field and Description
protected Map<Class,WeakReference<Resolution>>	entries

Constructor Summary

Constructors

Constructor and Description
InstantiationCache()

Method Summary

Modifier and Type	Method and Description
<T> T	postProcess(T object, ResolutionContext context, Resolution<?> resolution) Processes the newly created object.
Resolution<?>	resolve(ResolutionContext context) Resolves the context such that the object identified by the context's object identifier can be instantiated or retrieved.
protected boolean	shouldCacheMethod(ResolutionContext context) Returns whether the instantiation method from the given context should be cached.

Methods inherited from class java.lang.Object

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

Methods inherited from interface ch.jalu.injector.handlers.Handler

onAnnotation, onProvider, onProviderClass

Field Detail

entries

protected Map<Class,WeakReference<Resolution>> entries

Constructor Detail

InstantiationCache

public InstantiationCache()

Method Detail

resolve

public Resolution<?> resolve(ResolutionContext context)

Description copied from interface: Handler

Resolves the context such that the object identified by the context's object identifier can be instantiated or retrieved. May throw an exception if something is invalid, such as when the requested object is not possible to resolve (e.g. wrong combination of annotations, unmet conditions).

The returned Resolution must correspond to the type represented by the context's object identifier.

Specified by:

resolve in interface Handler

Parameters:

context - the resolution context

Returns:

the instantiation for the class, or null if not possible

postProcess

public <T> T postProcess(T object,
                         ResolutionContext context,
                         Resolution<?> resolution)

Description copied from interface: Handler

Processes the newly created object.

Specified by:

postProcess in interface Handler

Type Parameters:

T - the object's type

Parameters:

object - the object that was instantiated

context - the resolution context

resolution - the resolution that was used to create the object

Returns:

the new object to replace the instance with, null to keep the object the same

shouldCacheMethod

protected boolean shouldCacheMethod(ResolutionContext context)

Returns whether the instantiation method from the given context should be cached.

Parameters:

context - the context to process

Returns:

true to cache the instantiation method, false otherwise