io.atlassian.fugue

Class Checked

java.lang.Object

io.atlassian.fugue.Checked

public class Checked
extends Object

Helpers to work with functions that may throw exceptions. Used with Try.

Since:

4.4.0

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	Checked.Function<A,B,E extends Exception> Represents a Checked.Function that may throw an exception.
static interface	Checked.Supplier<A,E extends Exception> Represents a Checked.Supplier that may throw an exception.

Method Summary

Modifier and Type	Method and Description
static <A,B,E extends Exception> Function<A,Try<B>>	lift(Checked.Function<A,B,E> f) Lifts a function that potentially throws into a function that either returns a Success of the value or a failure containing the thrown exception.
static <A,E extends Exception> Try<A>	of(Checked.Supplier<A,E> s) Create a new Try representing the result of a potentially exception throwing operation.

Methods inherited from class java.lang.Object

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

Method Detail

lift

public static <A,B,E extends Exception> Function<A,Try<B>> lift(Checked.Function<A,B,E> f)

Lifts a function that potentially throws into a function that either returns a Success of the value or a failure containing the thrown exception.

Type Parameters:

A - the function argument type

B - the function return type

E - The type of exception potentially thrown

Parameters:

f - a function that can throw

Returns:

the argument function lifted into returning a Try

of

public static <A,E extends Exception> Try<A> of(Checked.Supplier<A,E> s)

Create a new Try representing the result of a potentially exception throwing operation. If the provided supplier throws an exception this will return a failure wrapping the exception, otherwise a success of the supplied value will be returned.

Type Parameters:

A - the type of value s supplies

E - The type of exception potentially thrown

Parameters:

s - a supplier that may throw an exception

Returns:

If s throws an exception this will return a failure wrapping the exception, otherwise a success of the supplied value.