309 lines
7.4 KiB
Perl
309 lines
7.4 KiB
Perl
package WebGUI::Exception;
|
|
|
|
=head1 LEGAL
|
|
|
|
-------------------------------------------------------------------
|
|
WebGUI is Copyright 2001-2009 Plain Black Corporation.
|
|
-------------------------------------------------------------------
|
|
Please read the legal notices (docs/legal.txt) and the license
|
|
(docs/license.txt) that came with this distribution before using
|
|
this software.
|
|
-------------------------------------------------------------------
|
|
http://www.plainblack.com info@plainblack.com
|
|
-------------------------------------------------------------------
|
|
|
|
=cut
|
|
|
|
use strict;
|
|
|
|
sub WebGUI::Error::full_message {
|
|
my $self = shift;
|
|
my $message = $self->message ? $self->message : $self->description;
|
|
my @fields = map { defined $self->$_ ? ($_ . ': ' . $self->$_) : () } $self->Fields;
|
|
if (@fields) {
|
|
$message .= ' (' . join( q{, }, @fields ) . ')';
|
|
}
|
|
return $message;
|
|
}
|
|
|
|
=head1 NAME
|
|
|
|
Package WebGUI::Exception;
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
A base class for all exception handling. It creates a few base exception objects.
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
use WebGUI::Exception;
|
|
|
|
# throw
|
|
WebGUI::Error->throw(error=>"Something bad happened.");
|
|
WebGUI::Error::ObjectNotFound->throw(error=>"Couldn't instanciate object.", id=>$id);
|
|
|
|
# try
|
|
eval { someFunction() };
|
|
eval { my $obj = SomeClass->new($id) };
|
|
|
|
# catch
|
|
if (my $e = WebGUI::Error->caught("WebGUI::Error::ObjectNotFound")) {
|
|
my $errorMessage = $e->error;
|
|
my $objectId = $e->id;
|
|
# do something
|
|
}
|
|
|
|
B<NOTE>: Though the package name is WebGUI::Exception, the handler objects that are created are WebGUI::Error.
|
|
|
|
=head1 EXCEPTION TYPES
|
|
|
|
These exception classes are defined in this class:
|
|
|
|
=cut
|
|
|
|
#-------------------------------------------------------------------
|
|
|
|
=head2 WebGUI::Error
|
|
|
|
A basic do nothing exception. ISA Exception::Class.
|
|
|
|
=head3 error
|
|
|
|
The error message
|
|
|
|
WebGUI::Error->throw(error => "Something bad happened");
|
|
|
|
$message = $e->error;
|
|
|
|
=head3 file
|
|
|
|
A read only exception method that returns the file name of the file where the exception was thrown.
|
|
|
|
$filename = $e->file;
|
|
|
|
=head3 line
|
|
|
|
A read only exception method that returns the line number where the exception was thrown.
|
|
|
|
$lineNumber = $e->line;
|
|
|
|
=head3 package
|
|
|
|
A read only exception method that returns the package name where the exception was thrown.
|
|
|
|
=cut
|
|
|
|
#-------------------------------------------------------------------
|
|
|
|
=head2 WebGUI::Error::OverrideMe
|
|
|
|
An interface was not overriden as expected.
|
|
|
|
=cut
|
|
|
|
#-------------------------------------------------------------------
|
|
|
|
=head2 WebGUI::Error::MethodNotFound
|
|
|
|
Tried calling a method that doesn't exist.
|
|
|
|
=head3 method
|
|
|
|
The method called.
|
|
|
|
=cut
|
|
|
|
#-------------------------------------------------------------------
|
|
|
|
=head2 WebGUI::Error::InvalidObject
|
|
|
|
Used when looking to make sure objects are passed in that you expect. ISA WebGUI::Error::InvalidParam.
|
|
|
|
=head3 expected
|
|
|
|
The type of object expected ("HASH", "ARRAY", "WebGUI::User", etc).
|
|
|
|
=head3 got
|
|
|
|
The object type we got.
|
|
|
|
=cut
|
|
|
|
#-------------------------------------------------------------------
|
|
|
|
=head2 WebGUI::Error::InvalidParam
|
|
|
|
Used when an invalid parameter is passed into a subroutine.
|
|
|
|
=head3 param
|
|
|
|
Used to return the bad parameter, if present.
|
|
|
|
=cut
|
|
|
|
#-------------------------------------------------------------------
|
|
|
|
=head2 WebGUI::Error::ObjectNotFound
|
|
|
|
Used when an object is trying to be retrieved, but does not exist. ISA WebGUI::Error.
|
|
|
|
=head3 id
|
|
|
|
The id of the object to be retrieved.
|
|
|
|
=cut
|
|
|
|
#-------------------------------------------------------------------
|
|
|
|
=head2 WebGUI::Error::ObjectNotFound::Template
|
|
|
|
Used when a template is trying to be retrieved, but does not exist. ISA WebGUI::Error::ObjectNotFound.
|
|
|
|
=head3 templateId | id | assetId
|
|
|
|
The id of the object to be retrieved.
|
|
|
|
=cut
|
|
|
|
#-------------------------------------------------------------------
|
|
|
|
=head2 WebGUI::Error::InvalidFile
|
|
|
|
Used when accessing a file and there are formatting or data problems found in the file. ISA WebGUI::Error.
|
|
|
|
=head3 brokenFile
|
|
|
|
The filename.
|
|
|
|
=head3 brokenLine
|
|
|
|
The line the error was found on.
|
|
|
|
=cut
|
|
|
|
#-------------------------------------------------------------------
|
|
|
|
=head2 WebGUI::Error::Template
|
|
|
|
Used when a template has parsing errors. ISA WebGUI::Error.
|
|
|
|
=cut
|
|
|
|
#-------------------------------------------------------------------
|
|
|
|
=head2 WebGUI::Error::Connection
|
|
|
|
Used when connecting to an external resource and it fails for some reason. ISA WebGUI::Error.
|
|
|
|
=head3 resource
|
|
|
|
The name or configuration or URL of the resource trying to be accessed.
|
|
|
|
=cut
|
|
|
|
use Exception::Class (
|
|
|
|
'WebGUI::Error' => {
|
|
description => "A general error occured.",
|
|
},
|
|
|
|
|
|
'WebGUI::Error::OverrideMe' => {
|
|
isa => 'WebGUI::Error',
|
|
description => 'This method should be overridden by subclasses.',
|
|
},
|
|
|
|
|
|
'WebGUI::Error::MethodNotFound' => {
|
|
isa => 'WebGUI::Error',
|
|
description => q|Called a method that doesn't exist.|,
|
|
fields => 'method'
|
|
},
|
|
|
|
|
|
'WebGUI::Error::InvalidObject' => {
|
|
isa => 'WebGUI::Error::InvalidParam',
|
|
description => "Expected to get a reference to an object type that wasn't gotten.",
|
|
fields => ["expected","got"],
|
|
},
|
|
|
|
|
|
'WebGUI::Error::InvalidParam' => {
|
|
isa => 'WebGUI::Error',
|
|
description => "Expected to get a param we didn't get.",
|
|
fields => ["param"],
|
|
},
|
|
|
|
|
|
'WebGUI::Error::Compile' => {
|
|
isa => 'WebGUI::Error',
|
|
description => "Unable to compile the requested class",
|
|
fields => ["class", "cause"],
|
|
},
|
|
|
|
|
|
'WebGUI::Error::ObjectNotFound' => {
|
|
isa => 'WebGUI::Error',
|
|
description => "The object you were trying to retrieve does not exist.",
|
|
fields => ["id"],
|
|
},
|
|
|
|
|
|
'WebGUI::Error::ObjectNotFound::Template' => {
|
|
isa => 'WebGUI::Error',
|
|
description => "The template an asset was trying to retrieve does not exist.",
|
|
fields => [qw/templateId assetId/],
|
|
},
|
|
|
|
|
|
'WebGUI::Error::InvalidFile' => {
|
|
isa => 'WebGUI::Error',
|
|
description => "The file you have provided has errors.",
|
|
fields => [qw{ brokenFile brokenLine }],
|
|
},
|
|
|
|
|
|
'WebGUI::Error::Template' => {
|
|
isa => 'WebGUI::Error',
|
|
description => "A template has errors that prevent it from being processed.",
|
|
},
|
|
|
|
|
|
'WebGUI::Error::Connection' => {
|
|
isa => 'WebGUI::Error',
|
|
description => "Couldn't establish a connection.",
|
|
fields => [qw{ resource }],
|
|
},
|
|
|
|
'WebGUI::Error::Fatal' => {
|
|
isa => 'WebGUI::Error',
|
|
description => "Fatal error that should be shown to all site visitors.",
|
|
},
|
|
|
|
'WebGUI::Error::Database' => {
|
|
isa => 'WebGUI::Error',
|
|
description => 'A database error',
|
|
},
|
|
|
|
'WebGUI::Error::NotInConfig' => {
|
|
isa => 'WebGUI::Error',
|
|
description => 'A module was requested that does not exist in the configuration file.',
|
|
fields => [qw{ module configKey }],
|
|
},
|
|
);
|
|
|
|
{
|
|
package WebGUI::Error;
|
|
use overload '~~' => sub {
|
|
return $_[0]->isa($_[1]);
|
|
},
|
|
'eq' => sub {
|
|
return $_[0]->error eq $_[1];
|
|
},
|
|
'ne' => sub {
|
|
return $_[0]->error ne $_[1];
|
|
};
|
|
}
|
|
|
|
1;
|
|
|