Vincent,
The simplest way to do this is to catch the exception, so wrap the
object creation inside an eval { } and if you get an exception write
the info to your log file.
There is a way to alter the Moose error handling behavior, but it
would be overkill in this case where simple exception handling would
suffice.
- Stevan
On Sep 22, 2008, at 9:40 AM, vincent roudil wrote:
Hello Moose,
I am just starting to explore Moose. This is probably something
simple, but
I can't figure out the best way to do this.
With the Moose type constraint, I would like to get control of the
error
handling when the type is invalid.
Here is an example.
a class host, with 2 attributes, name and ip_addr, with a control
on the IP
address validity:
##### package host.pm
package host;
use Moose;
use Moose::Util::TypeConstraints;
use Regexp::Common qw /net/;
subtype IPAddr
=> as Str
=> where {/^$RE{net}{IPv4}$/}
=> message { 'invalid IP address'};
has 'ip_addr' => (isa => 'IPAddr', is => 'ro', required => 1);
has 'name' => (isa => 'Str', is => 'ro', required => 1);
1;
##### end package host.pm
The type constraints works fine. Only that when the IP address is
invalid
the program dies, with great verbosity.
I would just like when IP address is invalid, to print a message in
a log
file, and that the creation of the instance fails quietly, so I
could use
the host class like this:
##### main.pl:
use host;
my $h=host->new(name=>'jupiter', ip_addr=>'10.10.10.1');
if ($h) {
print $h->name." created successfully with the IP address ".$h-
>ip_addr;
}
If someone could point me to the right direction, that would be great.
Thanks in advance.
Vincent.
