com.github.fge.lambdas.functions

Class FunctionChainer<T,R>

java.lang.Object

com.github.fge.lambdas.Chainer<Function<T,R>,ThrowingFunction<T,R>,FunctionChainer<T,R>>

com.github.fge.lambdas.functions.FunctionChainer<T,R>

All Implemented Interfaces:

ThrowingFunction<T,R>, Function<T,R>

public class FunctionChainer<T,R>
extends Chainer<Function<T,R>,ThrowingFunction<T,R>,FunctionChainer<T,R>>
implements ThrowingFunction<T,R>

Nested Class Summary

Nested classes/interfaces inherited from class com.github.fge.lambdas.Chainer

Chainer.InstantiationException

Field Summary

Fields inherited from class com.github.fge.lambdas.Chainer

throwing

Constructor Summary

Constructors

Constructor and Description
FunctionChainer(ThrowingFunction<T,R> function)

Method Summary

Modifier and Type	Method and Description
R	doApply(T t)
Function<T,R>	fallbackTo(Function<T,R> fallback) Fall back to a non throwing instance if this instance fails
Function<T,R>	orReturn(R retval)
<E extends RuntimeException> ThrowingFunction<T,R>	orThrow(Class<E> exclass) Rethrow the exception using a custom (unchecked!) exception class if this throwing instance fails
FunctionChainer<T,R>	orTryWith(ThrowingFunction<T,R> other) Try with another throwing instance if the first instance fails
Function<T,R>	sneakyThrow() Sneaky throw of the exception thrown by the instance

Methods inherited from class com.github.fge.lambdas.Chainer

doSneakyThrow, rethrow

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.github.fge.lambdas.functions.ThrowingFunction

apply

Methods inherited from interface java.util.function.Function

andThen, compose, identity

Constructor Detail

FunctionChainer

public FunctionChainer(ThrowingFunction<T,R> function)

Method Detail

doApply

public R doApply(T t)
          throws Throwable

Specified by:

doApply in interface ThrowingFunction<T,R>

Throws:

Throwable

orTryWith

public FunctionChainer<T,R> orTryWith(ThrowingFunction<T,R> other)

Description copied from class: Chainer

Try with another throwing instance if the first instance fails

Specified by:

orTryWith in class Chainer<Function<T,R>,ThrowingFunction<T,R>,FunctionChainer<T,R>>

Parameters:

other - the other throwing instance

Returns:

a new chain

orThrow

public <E extends RuntimeException> ThrowingFunction<T,R> orThrow(Class<E> exclass)

Description copied from class: Chainer

Rethrow the exception using a custom (unchecked!) exception class if this throwing instance fails

Your custom exception class must have a constructor accepting a single Throwable as an argument.

The original exception thrown will be the cause of the generated exception.

All instances of Error or RuntimeException thrown by the instance are thrown as is.

Specified by:

orThrow in class Chainer<Function<T,R>,ThrowingFunction<T,R>,FunctionChainer<T,R>>

Type Parameters:

E - type parameter of the exception class

Parameters:

exclass - the exception class

Returns:

a throwing instance

fallbackTo

public Function<T,R> fallbackTo(Function<T,R> fallback)

Description copied from class: Chainer

Fall back to a non throwing instance if this instance fails

Specified by:

fallbackTo in class Chainer<Function<T,R>,ThrowingFunction<T,R>,FunctionChainer<T,R>>

Parameters:

fallback - the fallback instance

Returns:

a non throwing instance

sneakyThrow

public Function<T,R> sneakyThrow()

Description copied from class: Chainer

Sneaky throw of the exception thrown by the instance

This code was inspited by the Lombok project.

Specified by:

sneakyThrow in class Chainer<Function<T,R>,ThrowingFunction<T,R>,FunctionChainer<T,R>>

orReturn

public Function<T,R> orReturn(R retval)