org.needle4j.injection

Class InjectionProviders

java.lang.Object

org.needle4j.injection.InjectionProviders

public final class InjectionProviders
extends Object

Utility class for creating InjectionProviders with default behavior.

Usage:

 import static org.needle4j.injection.InjectionProviders.*;
 

then call static factory methods to create providers.

Author:

Jan Galinski, Holisticon AG

Method Summary

Methods

Modifier and Type	Method and Description
static <T> InjectionProvider<T>	providerForInstance(T instance) InjectionProvider that provides a singleton instance of type T whenever injection is required.
static <T> InjectionProvider<T>	providerForNamedInstance(String name, T instance) InjectionProvider that provides a singleton instance of type T for every injection point that is annotated with a Named qualifier with value "name".
static <T> InjectionProvider<T>	providerForQualifiedInstance(Class<? extends Annotation> qualifier, T instance) InjectionProvider that provides a singleton instance of type T for every injection point that is annotated with the given qualifier.
static InjectionProvider<?>[]	providersForInstancesSuppliers(InjectionProviderInstancesSupplier... suppliers) Create array of providers from given suppliers.
static InjectionProvider<?>[]	providersToArray(Collection<InjectionProvider<?>> providers) Create array of InjectionProviders for given collection.
static Set<InjectionProvider<?>>	providersToSet(InjectionProvider<?>... providers)
static InjectionProviderInstancesSupplier	supplierForInjectionProviders(InjectionProvider<?>... providers) Creates a new Supplier.
static InjectionProviderInstancesSupplier	supplierForInjectionProviders(Set<InjectionProvider<?>> providers)

Methods inherited from class java.lang.Object

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

Method Detail

providerForInstance

public static <T> InjectionProvider<T> providerForInstance(T instance)

InjectionProvider that provides a singleton instance of type T whenever injection is required.

Parameters:

instance - the instance to return whenever assignable

Returns:

InjectionProvider for instance

providerForNamedInstance

public static <T> InjectionProvider<T> providerForNamedInstance(String name,
                                                T instance)

InjectionProvider that provides a singleton instance of type T for every injection point that is annotated with a Named qualifier with value "name".

Parameters:

name - value of Named annotation

instance - the instance to return whenever needed

Returns:

InjectionProvider for instance

providerForQualifiedInstance

public static <T> InjectionProvider<T> providerForQualifiedInstance(Class<? extends Annotation> qualifier,
                                                    T instance)

InjectionProvider that provides a singleton instance of type T for every injection point that is annotated with the given qualifier.

Parameters:

qualifier - qualifying annotation of injection point

instance - the instance to return whenever needed

Returns:

InjectionProvider for instance

supplierForInjectionProviders

public static InjectionProviderInstancesSupplier supplierForInjectionProviders(InjectionProvider<?>... providers)

Creates a new Supplier.

Parameters:

providers - vararg array of providers

Returns:

new supplier

supplierForInjectionProviders

public static InjectionProviderInstancesSupplier supplierForInjectionProviders(Set<InjectionProvider<?>> providers)

providersForInstancesSuppliers

public static InjectionProvider<?>[] providersForInstancesSuppliers(InjectionProviderInstancesSupplier... suppliers)

Create array of providers from given suppliers.

Parameters:

suppliers - vararg array of suppliers

Returns:

array of providers for use with vararg method

providersToSet

public static Set<InjectionProvider<?>> providersToSet(InjectionProvider<?>... providers)

providersToArray

public static InjectionProvider<?>[] providersToArray(Collection<InjectionProvider<?>> providers)

Create array of InjectionProviders for given collection.

Parameters:

providers - providers to be contained

Returns:

array of given providers