org.cactoos

Class Fallback.From<T>

java.lang.Object

org.cactoos.Fallback.From<T>

Type Parameters:

T - Type of result

All Implemented Interfaces:

Fallback<T>, Func<Throwable,T>

Enclosing interface:

Fallback<X>

public static final class Fallback.From<T>
extends Object
implements Fallback<T>

Fallback from exception.

There is no thread-safety guarantee.

Since:

1.0

Nested Class Summary

Nested classes/interfaces inherited from interface org.cactoos.Fallback

Fallback.From<T>, Fallback.None<X>

Constructor Summary

Constructors

Constructor and Description
From(Class<? extends Throwable> exp, Func<Throwable,T> func) Ctor.
From(Iterable<Class<? extends Throwable>> exps, Func<Throwable,T> func) Ctor.

Method Summary

Modifier and Type	Method and Description
T	apply(Throwable exp) Apply it.
int	support(Throwable exception) Calculate level of support of the given exception type.

Methods inherited from class java.lang.Object

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

Constructor Detail

From

public From(Class<? extends Throwable> exp,
            Func<Throwable,T> func)

Ctor.

Parameters:

exp - Supported exception type

func - Function that converts the given exception into required one

From

public From(Iterable<Class<? extends Throwable>> exps,
            Func<Throwable,T> func)

Ctor.

Parameters:

exps - Supported exceptions types

func - Function that converts the given exception into required one

Method Detail

apply

public T apply(Throwable exp)
        throws Exception

Description copied from interface: Func

Apply it.

Specified by:

apply in interface Func<Throwable,T>

Parameters:

exp - The argument

Returns:

The result

Throws:

Exception - If fails

support

public int support(Throwable exception)

Description copied from interface: Fallback

Calculate level of support of the given exception type.

Specified by:

support in interface Fallback<T>

Parameters:

exception - Exception

Returns:

Level of support: greater or equals to 0 if the target is supported and Integer.MIN_VALUE otherwise