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Bending GORM: 5-minute Techniques for Enterprise Integration
Have you seen someone develop a Rails or Grails application in a matter of
minutes, only to later discover that their domain model and database schema
followed conventions that are different from your existing systems? Or
perhaps you're interested in using Grails, but you don't want to duplicate
your existing Java domain classes in Groovy. In this session, we'll see how
GORM (Grails Object Relational Mapping) makes it easy to hook into your
pre-defined schemas or existing entity classes, while still getting all the
rapid application development (RAD) goodness that Grails has to offer.
In an enterprise environment, you're no doubt surrounded by legacy schemas
that pre-date Grails by many years, possibly even a decade or so. You want
to develop web applications quickly with one of the next-gen frameworks, but
there's no chance that management will agree to change all the schemas just
so you can code your app using the conventions employed by the next big
thing. However, we'll see that Grails offers a slew of options for quickly
and easily adapting Grails to any database schema. Whether you prefer the
GORM DSL, a few annotations, or even trusty ol' Hibernate XML, we can easily
wire together our Grails domain models to our existing schema and still get
most of the RAD benefits of Grails, including the super-productive dynamic
finders, highly-configurable validation rules, powerful Hibernate criteria
builders, and more.