org.cactoos.scalar

Class FallbackFrom<T>

java.lang.Object

org.cactoos.scalar.FallbackFrom<T>

Type Parameters:

T - Type of result

All Implemented Interfaces:

Func<Throwable,T>

public final class FallbackFrom<T>
extends Object
implements Func<Throwable,T>

Fallback from exception.

There is no thread-safety guarantee.

Since:

0.31

Nested Class Summary

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

Func.NoNulls<X,Y>

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
T	apply(Throwable exp) Apply it.
Integer	support(Class<? extends Throwable> target) 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

FallbackFrom

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

Ctor.

Parameters:

exp - Supported exception type

func - Function that converts the given exception into required one

FallbackFrom

public FallbackFrom(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 Integer support(Class<? extends Throwable> target)

Calculate level of support of the given exception type.

Parameters:

target - Exception type

Returns:

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

See Also:

InheritanceLevel