Package dev.comfast.util

Class ErrorKit

java.lang.Object

dev.comfast.util.ErrorKit

public class ErrorKit
extends Object

ErrorKit is a set of useful functions for error handling.

Constructor Summary

Constructors

Constructor	Description
ErrorKit()

Method Summary

Modifier and Type	Method	Description
static Supplier<RuntimeException>	_fail(String errorMsg, Object... msgParams)	Short supplier for RuntimeException, fits to Streams/Optionals
static <T> T	rethrow(Supplier<T> getter, String errorMsg, Object... msgParams)	Similarly to lombok SneakyThrows, wraps any checked / unchecked Exception into RuntimeException

Methods inherited from class java.lang.Object

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

Constructor Details

ErrorKit

public ErrorKit()

Method Details

_fail

public static Supplier<RuntimeException> _fail(String errorMsg,
 Object... msgParams)

Short supplier for RuntimeException, fits to Streams/Optionals

Usage example:

 found = someStream.findFirst().orElseThrow(_fail("Not found '%s'", someParam))
 value = someOptional.orElseThrow(_fail("Oh no !"))
 

Parameters:

errorMsg - message if error happens

msgParams - format params for errorMsg

Returns:

Supplier for RuntimeException, fits to Streams/Optionals

rethrow

public static <T> T rethrow(Supplier<T> getter,
 String errorMsg,
 Object... msgParams)

Similarly to lombok SneakyThrows, wraps any checked / unchecked Exception into RuntimeException

Adds additional error message and original Exception as cause.

Usage example:

 rethrow(() -> somethingThrowsCheckedException(), "Something failed");
 rethrow(() -> somethingCanFail(), "Something failed, see: '%s'", "some param");
 

Type Parameters:

T - function return type

Parameters:

getter - wrapped function

errorMsg - message if error happen

msgParams - format params for errorMsg

Returns:

function result