Package io.smallrye.beanbag

Interface BeanSupplier<T>

public interface BeanSupplier<T>

A value supplier for use from within a given scope.

Method Summary

Modifier and Type	Method	Description
T	get(Scope scope)	Get the supplied value.
static <T> BeanSupplier<T>	of(T instance)	Get a bean supplier which always returns the given value.
static <T> BeanSupplier<T>	resolving(Class<T> type, String name, boolean optional, DependencyFilter filter)	Get a bean supplier whose value is the result of resolution of a bean with the given parameters.
static <T> BeanSupplier<List<T>>	resolvingAll(Class<T> type, String name, DependencyFilter filter)	Get a bean supplier whose value is a list representing the result of resolving all the beans with the given parameters.
static <T> BeanSupplier<Map<String,T>>	resolvingAllByName(Class<T> type, DependencyFilter filter)	Get a bean supplier whose value is a map representing the result of resolving all the beans with the given parameters.
default <U> BeanSupplier<U>	transform(Function<T,U> function)	Get a bean supplier which applies the given transformation function to the result of this supplier.

Method Detail

get

T get(Scope scope)

Get the supplied value.

Parameters:

scope - the scope of the current resolution operation (not null)

Returns:

the (possibly null) resolved value

of

static <T> BeanSupplier<T> of(T instance)

Get a bean supplier which always returns the given value.

Type Parameters:

T - the value type

Parameters:

instance - the value to return

Returns:

the value that was given

transform

default <U> BeanSupplier<U> transform(Function<T,U> function)

Get a bean supplier which applies the given transformation function to the result of this supplier.

Type Parameters:

U - the transformed value type

Parameters:

function - the transformation function (must not be null)

Returns:

the transformed supplier (not null)

resolving

static <T> BeanSupplier<T> resolving(Class<T> type,
                                     String name,
                                     boolean optional,
                                     DependencyFilter filter)

Get a bean supplier whose value is the result of resolution of a bean with the given parameters.

Type Parameters:

T - the bean type

Parameters:

type - the bean type class (must not be null)

name - the bean name, or "" for any (must not be null)

optional - true if the bean should be optional, or false if it should be required

filter - the filter to apply to determine whether a given bean should be included (must not be null)

Returns:

the supplier (not null)

resolvingAll

static <T> BeanSupplier<List<T>> resolvingAll(Class<T> type,
                                              String name,
                                              DependencyFilter filter)

Get a bean supplier whose value is a list representing the result of resolving all the beans with the given parameters.

Type Parameters:

T - the bean type

Parameters:

type - the bean type class (must not be null)

name - the bean name, or "" for any (must not be null)

filter - the filter to apply to determine whether a given bean should be included (must not be null)

Returns:

the supplier (not null)

resolvingAllByName

static <T> BeanSupplier<Map<String,T>> resolvingAllByName(Class<T> type,
                                                                DependencyFilter filter)

Get a bean supplier whose value is a map representing the result of resolving all the beans with the given parameters. The key of the map is the bean name, and the value is the bean instance.

Type Parameters:

T - the bean type

Parameters:

type - the bean type class (must not be null)

filter - the filter to apply to determine whether a given bean should be included (must not be null)

Returns:

the supplier (not null)