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Re: new module pl2sql

by Corion (Pope)
on Sep 19, 2012 at 07:34 UTC ( #994420=note: print w/ replies, xml ) Need Help??


in reply to new module pl2sql

I briefly looked at the linked documentation, and couldn't find a section on how it compares to Class::DBI, DBIx::Class and other Object-Relational Mappers. If your module is not an ORM, maybe it is something more along the lines of a Triplestore (RDF::Trine)? I didn't find any explanation, but I only looked for a short time.

PS: The site is unreadable with Javascript disabled.


Comment on Re: new module pl2sql
Re^2: new module pl2sql
by tqisjim (Beadle) on Sep 20, 2012 at 18:25 UTC

    I would describe pl2sql as an ORM, as the name implies. However, I would describe Class::DBI and the others as an ROM, since it maps database functions (normally implemented in SQL) to class methods. Hence, Class::DBI defines numerous methods to correspond to their database equivalents. For nomenclature, this ORM designation seems somewhat Orwellian- its name has an opposite meaning. In fact, a Class::DBI object is exactly an RDB table represented as a Perl object.

    PL2SQL takes the opposite approach. It provides automatic persistence (in an RDB table) of any arbitrary complex object. PL2SQL has two methods: The first assigns the object to a designated table via a unique ID. The second retrieves the object. It also uses a "Universal table definition" which provides reusability. Finally, a single table can be applied to numerous object types, instead of the one-to-one correspondence required of Class::DBI.

    In fact, the "Universal table definition" is based on an XML representation of an arbitrary object. I lack the expertise to precisely place this module in the Universal jingo taxonomy, but based on Wikipedia, I would describe it as an XML-enabled XML database.

    I took the liberty of posting your response on my website and my response there is structured a little differently. You should have better luck reading the description, but you'll need to enable javascript in order to read the comments. That feature is uses AJAX.

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