GORM - Object Relational Mapping with Hibernate De-mystified
Hibernate is an immensely powerful ORM layer with an array of features and mapping options which comes at the cost of complexity. The web application framework Grails ships with an ORM layer that builds of top of Hibernate, but eliminates much of the complexity through clever use of convention and the dynamic features of the Groovy language. Known as GORM, it offers a convention-based mapping strategy that hooks into the Hibernate configuration model and provides an abstraction layer above Hibernate with powerful features like Groovy builders for Criteria, dynamic finders and transaction management through closures.
This talk, by Grails project lead Graeme Rocher, will walk you through the features of GORM and demonstrate how to create different persistence mappings. Once the basics of mapping is understood you'll dive head first into persisting and reading data without ever accessing a Hibernate session!
Session Topics:
- GORM - An Introduction
- Mapping Domain Models with GORM
- Persisting and Reading data
- Querying with Dynamic finders
- Querying with Criteria"
About Graeme Rocher
As Head of Grails Development for SpringSource, Graeme Rocher is the project lead and co-founder of the Grails web application framework. He's a member of the JSR-241 Expert Group which standardizes the Groovy language. Graeme authored the Definitive Guide to Grails for Apress and is a frequent speaker at JavaOne, JavaPolis, NoFluffJustStuff, JAOO, the Sun TechDays and more. Graeme joined SpringSource in late 2008 upon the acquisition of G2One Inc. Before founding G2One, Graeme was the CTO of SkillsMatter, a skills transfer company specializing in open source technology and agile software development, where Graeme was in charge of the company's courseware development strategy and general technical direction.
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