NAME

Data::Object::Role::Errable

ABSTRACT

Errable Role for Perl 5

SYNOPSIS

  package Example;

  use Moo;

  with 'Data::Object::Role::Errable';

  package main;

  my $example = Example->new;

  # $example->error('Oops!')

DESCRIPTION

This package provides a mechanism for handling errors (exceptions). It's a more structured approach to being "throwable". The idea is that any object that consumes this role can set an error which automatically throws an exception which if trapped includes the state (object as thrown) in the exception context.

INTEGRATES

This package integrates behaviors from:

Data::Object::Role::Tryable

LIBRARIES

This package uses type constraints from:

Data::Object::Types

ATTRIBUTES

This package has the following attributes:

error

  error(ExceptionObject)

This attribute is read-write, accepts (ExceptionObject) values, and is optional.

METHODS

This package implements the following methods:

error

  error(ExceptionObject $exception | HashRef $options | Str $message) : ExceptionObject

The error method takes an error message (string) or hashref of exception object constructor attributes and throws an "exception". If the exception is trapped the exception object will contain the object as the exception context. The original object will also have the exception set as the error attribute. The error attribute can be cleared using the error_reset method.

error example #1

  package main;

  my $example = Example->new;

  $example->error('Oops!');

  # throws exception

error example #2

  package main;

  my $example = Example->new;

  $example->error({ message => 'Oops!'});

  # throws exception

error example #3

  package main;

  my $example = Example->new;
  my $exception = Data::Object::Exception->new('Oops!');

  $example->error($exception);

  # throws exception

error_reset

  error_reset() : Any

The error_reset method clears any exception object set on the object.

error_reset example #1

  package main;

  my $example = Example->new;

  eval { $example->error('Oops!') };

  $example->error_reset

AUTHOR

Al Newkirk, awncorp@cpan.org

LICENSE

Copyright (C) 2011-2019, Al Newkirk, et al.

This is free software; you can redistribute it and/or modify it under the terms of the The Apache License, Version 2.0, as elucidated in the "license file".

PROJECT

Wiki

Project

Initiatives

Milestones

Contributing

Issues

cpanm Data::Object::Role::Errable

perl -MCPAN -e shell
install Data::Object::Role::Errable