com.google.inject.spi

Interface TypeEncounter<I>

Type Parameters:

I - the injectable type encountered

public interface TypeEncounter<I>

Context of an injectable type encounter. Enables reporting errors, registering injection listeners and binding method interceptors for injectable type I. It is an error to use an encounter after the hear() method has returned.

Since:

2.0

Method Summary

Modifier and Type	Method and Description
void	addError(Message message) Records an error message to be presented to the user at a later time.
void	addError(String message, Object... arguments) Records an error message for type I which will be presented to the user at a later time.
void	addError(Throwable t) Records an exception for type I, the full details of which will be logged, and the message of which will be presented to the user at a later time.
void	bindInterceptor(Matcher<? super Method> methodMatcher, MethodInterceptor... interceptors) Binds method interceptor[s] to methods matched in type I and its supertypes.
<T> MembersInjector<T>	getMembersInjector(Class<T> type) Returns the members injector used to inject dependencies into methods and fields on instances of the given type T.
<T> MembersInjector<T>	getMembersInjector(TypeLiteral<T> typeLiteral) Returns the members injector used to inject dependencies into methods and fields on instances of the given type T.
<T> Provider<T>	getProvider(Class<T> type) Returns the provider used to obtain instances for the given injection type.
<T> Provider<T>	getProvider(Key<T> key) Returns the provider used to obtain instances for the given injection key.
void	register(InjectionListener<? super I> listener) Registers an injection listener for type I.
void	register(MembersInjector<? super I> membersInjector) Registers a members injector for type I.

Method Detail

addError

void addError(String message,
              Object... arguments)

Records an error message for type I which will be presented to the user at a later time. Unlike throwing an exception, this enable us to continue configuring the Injector and discover more errors. Uses String.format(String, Object[]) to insert the arguments into the message.

addError

void addError(Throwable t)

Records an exception for type I, the full details of which will be logged, and the message of which will be presented to the user at a later time. If your type listener calls something that you worry may fail, you should catch the exception and pass it to this method.

addError

void addError(Message message)

Records an error message to be presented to the user at a later time.

getProvider

<T> Provider<T> getProvider(Key<T> key)

Returns the provider used to obtain instances for the given injection key. The returned provider will not be valid until the injector has been created. The provider will throw an IllegalStateException if you try to use it beforehand.

getProvider

<T> Provider<T> getProvider(Class<T> type)

Returns the provider used to obtain instances for the given injection type. The returned provider will not be valid until the injector has been created. The provider will throw an IllegalStateException if you try to use it beforehand.

getMembersInjector

<T> MembersInjector<T> getMembersInjector(TypeLiteral<T> typeLiteral)

Returns the members injector used to inject dependencies into methods and fields on instances of the given type T. The returned members injector will not be valid until the main injector has been created. The members injector will throw an IllegalStateException if you try to use it beforehand.

Parameters:

typeLiteral - type to get members injector for

getMembersInjector

<T> MembersInjector<T> getMembersInjector(Class<T> type)

Returns the members injector used to inject dependencies into methods and fields on instances of the given type T. The returned members injector will not be valid until the main injector has been created. The members injector will throw an IllegalStateException if you try to use it beforehand.

Parameters:

type - type to get members injector for

register

void register(MembersInjector<? super I> membersInjector)

Registers a members injector for type I. Guice will use the members injector after its performed its own injections on an instance of I.

register

void register(InjectionListener<? super I> listener)

Registers an injection listener for type I. Guice will notify the listener after all injections have been performed on an instance of I.

bindInterceptor

void bindInterceptor(Matcher<? super Method> methodMatcher,
                     MethodInterceptor... interceptors)

Binds method interceptor[s] to methods matched in type I and its supertypes. A method is eligible for interception if:

• Guice created the instance the method is on
• Neither the enclosing type nor the method is final
• And the method is package-private or more accessible

Parameters:

methodMatcher - matches methods the interceptor should apply to. For example: annotatedWith(Transactional.class).

interceptors - to bind