Package com.google.inject.throwingproviders

Class CheckedProviders

java.lang.Object

com.google.inject.throwingproviders.CheckedProviders

public final class CheckedProviders
extends Object

Static utility methods for creating and working with instances of CheckedProvider.

Since:

4.2

Method Summary

Modifier and Type	Method	Description
static <T,P extends CheckedProvider<? super T>> P	of(TypeLiteral<P> providerType, T instance)	Returns a CheckedProvider which always provides instance.
static <T,P extends CheckedProvider<? super T>> P	of(Class<P> providerType, T instance)	Returns a CheckedProvider which always provides instance.
static <T,P extends CheckedProvider<? super T>> P	throwing(TypeLiteral<P> providerType, Class<? extends Throwable> throwable)	Returns a CheckedProvider which always throws exceptions.
static <T,P extends CheckedProvider<? super T>> P	throwing(Class<P> providerType, Class<? extends Throwable> throwable)	Returns a CheckedProvider which always throws exceptions.

Methods inherited from class java.lang.Object

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

Method Detail

of

public static <T,P extends CheckedProvider<? super T>> P of(TypeLiteral<P> providerType,
                                                                  @Nullable
                                                                  T instance)

Returns a CheckedProvider which always provides instance.

The provider type passed as providerType must be an interface. Calls to methods other than CheckedProvider.get() will throw UnsupportedOperationException.

Parameters:

providerType - the type of the CheckedProvider to return

instance - the instance that should always be provided

of

public static <T,P extends CheckedProvider<? super T>> P of(Class<P> providerType,
                                                                  @Nullable
                                                                  T instance)

Returns a CheckedProvider which always provides instance.

Parameters:

providerType - the type of the CheckedProvider to return

instance - the instance that should always be provided

See Also:

#of(TypeLiteral, T)

throwing

public static <T,P extends CheckedProvider<? super T>> P throwing(TypeLiteral<P> providerType,
                                                                        Class<? extends Throwable> throwable)

Returns a CheckedProvider which always throws exceptions.

This method uses the nullary (no argument) constructor of throwable to create a new instance of the given Throwable on each method invocation which is then thrown immediately.

See #of(TypeLiteral, T) for more information.

Parameters:

providerType - the type of the CheckedProvider to return

throwable - the type of the Throwable to throw

See Also:

#of(TypeLiteral, T)

throwing

public static <T,P extends CheckedProvider<? super T>> P throwing(Class<P> providerType,
                                                                        Class<? extends Throwable> throwable)

Returns a CheckedProvider which always throws exceptions.

Parameters:

providerType - the type of the CheckedProvider to return

throwable - the type of the Throwable to throw

See Also:

throwing(TypeLiteral, Class)