Class::Factory allows you to decouple these things -- you can map a name/type to a class name and initialize a factory with them, then call 'new' on the factory and pass it the name/type and get back an object of the right type.

Here's an example, untested. (See the docs for more.)

package InvoiceCalculatorFactory;

use base qw( Class::Factory );

__PACKAGE__->add_factory_type(
         old_school => 'InvoiceCalculator::OldSchool' );
__PACKAGE__->add_factory_type(
         new_school => 'InvoiceCalculator::NewSchool' );
__PACKAGE__->add_factory_type(
        delinquent => 'InvoiceCalculator::Delinquent' );
[download]

And then, assuming your client object has a field 'type' or something, you can do:

my $calculator = InvoiceCalculatorFactory->new( $client->type );
[download]

Good luck!

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.