ch.jalu.injector.handlers.instantiation

Class ProviderHandler

java.lang.Object

ch.jalu.injector.handlers.instantiation.ProviderHandler

All Implemented Interfaces:

Handler

public class ProviderHandler
extends Object
implements Handler

Default handler for Provider objects. Registers providers and classes and creates Resolution objects for classes it can handle.

Field Summary

Fields

Modifier and Type	Field and Description
protected Map<Class<?>,ch.jalu.injector.handlers.instantiation.ProviderHandler.ProviderBasedInstantiation<?>>	providers

Constructor Summary

Constructors

Constructor and Description
ProviderHandler()

Method Summary

Modifier and Type	Method and Description
<T> void	onProvider(Class<T> clazz, javax.inject.Provider<? extends T> provider) Processes the given provider.
<T,P extends javax.inject.Provider<? extends T>> void	onProviderClass(Class<T> clazz, Class<P> providerClass) Processes the given provider class.
Resolution<?>	resolve(ResolutionContext context) Resolves the context such that the object identified by the context's object identifier can be instantiated or retrieved.

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, postProcess

Field Detail

providers

protected Map<Class<?>,ch.jalu.injector.handlers.instantiation.ProviderHandler.ProviderBasedInstantiation<?>> providers

Constructor Detail

ProviderHandler

public ProviderHandler()

Method Detail

onProvider

public <T> void onProvider(Class<T> clazz,
                           javax.inject.Provider<? extends T> provider)

Description copied from interface: Handler

Processes the given provider.

Specified by:

onProvider in interface Handler

Type Parameters:

T - the class' type

Parameters:

clazz - the class to associate the provider with

provider - the provider

onProviderClass

public <T,P extends javax.inject.Provider<? extends T>> void onProviderClass(Class<T> clazz,
                                                                             Class<P> providerClass)

Description copied from interface: Handler

Processes the given provider class.

Specified by:

onProviderClass in interface Handler

Type Parameters:

T - the class' type

P - the provider class' type

Parameters:

clazz - the class to associate the provider class with

providerClass - the provider class

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