RoPkg::Exceptions (3pm)

RoPkg::Exceptions is a collection of predefined exceptions used by all modules from RoPkg namespace.

 #!/usr/bin/perl

use strict; use warnings;

use RoPkg::Exceptions;

sub main { eval { if ( $#ARGV == -1 ) { Param::Missing->throw('No parameter found'); } };

if ( my $e = Exception::Class->caught('Param::Missing') ) { print STDERR $e->message,$/,$e->trace,$/; } }

main();

It is very possible that you don't find a good reason for using exceptions from this example. And you are right. This example is kind of silly. But, try to use exceptions in a real project. Then, you will apreciate their real value.

RoPkg::Exceptions require perl 5.008 or later and the Exception::Class module.

The following exceptions are defined in this class:

*) General - general pourpose exception

*) OutsideClass - raised when a method is called outside a class instance

*) File - the base for all file related exceptions . This exception has the filename parameter, who can be used to specify the path to the file. filename parameter can be used by all derivated exceptions. The following exceptions are derivated from File:

*) File::NotFound - the file was not found

*) File::Open - error while opening file

*) File::Create - could not create file

*) Dir - the base for all directory related exceptions . This exception has the dirname parameter, who can be used to specify the path to the directory. dirname parameter can be used by all derivated exceptions. The following exceptions are derivated from Dir:

*) Dir::NotFound - the directory was not found

*) Dir::Open - error while opening directory

*) Dir::Create - could not create directory

*) Param - the base for all parameters related exceptions. This exception has the name parameter, who can be used to specify the parameter name. name can be used by all derivated exceptions. The following exceptions are derivated from Param:

*) Param::Missing - the parameter was not found

*) Param::Unknown - the parameter is unknown

*) Param::Wrong - the parameter has the wrong value or is not defined

*) \s-1DB\s0 - the base for all database related exceptions. This exception has the following parameters: dsn, user and pass . This exception (and the ones derivated from her) are mostly used in RoPkg::DB class. Of course, this doesn't means that you can't use them in your application ;) .The following exceptions are derivated from \s-1DB\s0:

*) DB::Connect - raised when the connection with the database could not be established

*) DB::ConnExists - raised when a connection with the same name already exists.

*) DB::ConnNotFound - the requested connection was not found

*) DB::NoResults - the sql query returned no results

\s-1ROOT\s0

General

OutsideClass

File

File::NotFound

File::Open

File::Create

Dir

Dir::NotFound

Dir::Open

Dir::Create

Param

Param::Missing

Param::Unknown

Param::Wrong

\s-1DB\s0

DB::Connect

DB::ConnExists

DB::ConnNotFound

DB::NoResults

RoPkg::Utils

Subredu Manuel <[email protected]>

The current version is 0.2.1

The tests for this module are located in t directory. To run those tests, use the following command: make test

This module does not have any public methods.

None known to me

This module is perl critic level 1 compliant with 1 exception.

No known bugs. If you find one (or many) please send me a detailed report.

No configuration file or environment variables are used by this module.

Copyright (C) 2005 Subredu Manuel. All Rights Reserved. This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The \s-1LICENSE\s0 file contains the full text of the license.