DBIx::Class::Exception - Exception objects for DBIx::Class

DBIx-Class documentation Contained in the DBIx-Class distribution.

Index

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NAME

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DBIx::Class::Exception - Exception objects for DBIx::Class

DESCRIPTION

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Exception objects of this class are used internally by the default error handling of throw_exception in DBIx::Class::Schema to prevent confusing and/or redundant re-application of Carp's stack trace information.

These objects stringify to the contained error message, and use overload fallback to give natural boolean/numeric values.

METHODS

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throw

Arguments: $exception_scalar, $stacktrace

This is meant for internal use by DBIx::Class's throw_exception code, and shouldn't be used directly elsewhere.

Expects a scalar exception message. The optional argument $stacktrace tells it to use longmess in Carp instead of croak in Carp::Clan.

  DBIx::Class::Exception->throw('Foo');
  eval { ... }; DBIx::Class::Exception->throw($@) if $@;

rethrow

This method provides some syntactic sugar in order to re-throw exceptions.

AUTHORS

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Brandon L. Black <blblack@gmail.com>

LICENSE

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You may distribute this code under the same terms as Perl itself.

DBIx-Class documentation Contained in the DBIx-Class distribution. 
package DBIx::Class::Exception;

use strict;
use warnings;

use Carp::Clan qw/^DBIx::Class/;
use Scalar::Util qw/blessed/;

use overload
    '""' => sub { shift->{msg} },
    fallback => 1;


sub throw {
    my ($class, $msg, $stacktrace) = @_;

    # Don't re-encapsulate exception objects of any kind
    die $msg if blessed($msg);

    # use Carp::Clan's croak if we're not stack tracing
    if(!$stacktrace) {
        local $@;
        eval { croak $msg };
        $msg = $@
    }
    else {
        $msg = Carp::longmess($msg);
    }

    my $self = { msg => $msg };
    bless $self => $class;

    die $self;
}


sub rethrow {
    die shift;
}


1;