Hello Ilya,
thank you for your fast answer. Did I got you right, that when I want to change other configuration parameters like this 
&CCS::Data::Datatype::base_class::config_parameter(
        max_length => {max => 255, default => 255},
        min_length => {max => 255});

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which is taken from my String class, I need to override your sub parameter_config in this way? 
sub parameter_config {
    return {max_length => {max => 255, default =>255));
}

[download]
But I also need the other parameters from base class (like min => 0 and valid => 0 in this case).

Or could I do something like this: 
my $parameter_config = SUPER->parameter_config;
$parameter_config->{max_length}{max} = 255;
$parameter_config->{max_length}{default} = 255;

sub parameter_config { $parameter_config }

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My classes not only inherit from base_class.pm. There are also datatypes that inherit from other datatypes. Such as Text inherits from String (but no direct base_class) and PrimaryKey inherits from Integer. Is such inheritance with one of this configuration methods combineable?

My goal is, that I can add new parameters only in base_class (let's say has_double_letters or max_number / min_number) and all the datatypes need only to "activate" this new parameters via the ->valid_parameter(qw(mandatory max_number)) call.

Thanks, Uwe

In reply to Re: Re: OO - problem with inheritance by uwevoelker
in thread OO - problem with inheritance by uwevoelker

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