Package org.apache.cayenne.di
Interface Injector
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- All Known Implementing Classes:
DefaultInjector
public interface InjectorA facade to the Cayenne DI container. To create an injector useDIBootstrapstatic methods.- Since:
- 3.1
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description <T> TgetInstance(Class<T> type)Returns a service instance bound in the container for a specific type.<T> TgetInstance(Key<T> key)Returns a service instance bound in the container for a specific binding key.<T> Provider<T>getProvider(Class<T> type)<T> Provider<T>getProvider(Key<T> key)voidinjectMembers(Object object)Performs field injection on a given object, ignoring constructor injection.voidshutdown()A lifecycle method that let's the injector's services to clean up their state and release resources.
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Method Detail
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getInstance
<T> T getInstance(Class<T> type) throws DIRuntimeException
Returns a service instance bound in the container for a specific type. ThrowsDIRuntimeExceptionif the type is not bound, or an instance can not be created.- Throws:
DIRuntimeException
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getInstance
<T> T getInstance(Key<T> key) throws DIRuntimeException
Returns a service instance bound in the container for a specific binding key. ThrowsDIRuntimeExceptionif the key is not bound, or an instance can not be created.- Throws:
DIRuntimeException
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getProvider
<T> Provider<T> getProvider(Class<T> type) throws DIRuntimeException
- Throws:
DIRuntimeException
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getProvider
<T> Provider<T> getProvider(Key<T> key) throws DIRuntimeException
- Throws:
DIRuntimeException
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injectMembers
void injectMembers(Object object)
Performs field injection on a given object, ignoring constructor injection. Since Cayenne DI injector returns fully injected objects, this method is rarely used directly.Note that using this method inside a custom DI
Providerwill most likely result in double injection, as custom provider is wrapped in a field-injecting provider by the DI container. Instead custom providers must initialize object properties manually, obtaining dependencies from Injector.
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shutdown
void shutdown()
A lifecycle method that let's the injector's services to clean up their state and release resources. This method would normally generate a scope end event for the injector's one and only singleton scope.
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