team.unnamed.inject.provision.std

Class ProviderTypeProvider<T>

java.lang.Object

team.unnamed.inject.provision.StdProvider<T>

team.unnamed.inject.provision.std.ProviderTypeProvider<T>

All Implemented Interfaces:

Provider<T>

public class ProviderTypeProvider<T>
extends StdProvider<T>
implements Provider<T>

Represents a provider that gets instantiated the first time that gets called, then the instance is saved. The get() method functionality is delegated to the delegate instance.

For example

 public interface Foo {
     // ...
 }

 public class FooProvider implements Provider<Foo> {

     @Inject private Baz baz;

     @Override
     public Foo get() {
          // create Foo using some baz property
     }

 }
 

Bindings like bind(Foo.class).toProvider(FooProvider.class) and bind(Foo.class).toProvider(new FooProvider()) work, The difference is that the binding to the provider class creates the provider instance using Injector.getInstance(java.lang.Class<T>), so the constructor can be injected

Field Summary

Fields inherited from class team.unnamed.inject.provision.StdProvider

injected

Constructor Summary

Constructors

Constructor and Description
ProviderTypeProvider(TypeReference<? extends Provider<? extends T>> providerClass)

Method Summary

Modifier and Type	Method and Description
T	get()
Provider<? extends T>	getProvider()
void	inject(ProvisionStack stack, InjectorImpl injector) Used by standard providers and some other providers to delegate the injection to the wrapped provider (when it's a wrapper provider) or injecting some provider properties without checking everything
java.lang.String	toString()

Methods inherited from class team.unnamed.inject.provision.StdProvider

get, isInjected, onBind, setInjected, withScope

Methods inherited from class java.lang.Object

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

Constructor Detail

ProviderTypeProvider

public ProviderTypeProvider(TypeReference<? extends Provider<? extends T>> providerClass)

Method Detail

inject

public void inject(ProvisionStack stack,
                   InjectorImpl injector)

Description copied from class: StdProvider

Used by standard providers and some other providers to delegate the injection to the wrapped provider (when it's a wrapper provider) or injecting some provider properties without checking everything

Overrides:

inject in class StdProvider<T>

Parameters:

stack - The thread injection stack (passed as argument instead of getting it from the thread-local held by the injector)

injector - The injector used to inject this provider

get

public T get()

Specified by:

get in interface Provider<T>

Overrides:

get in class StdProvider<T>

getProvider

public Provider<? extends T> getProvider()

Returns:

The targeted provider instance

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object