SimpleORM (like Hibernate) and SimpleWebApp (Ruby on Rails for Java)

SimpleORM
Simple Java Object Relational Mapping

Power without complexity.

Simple adj. 1. Easy to understand, deal with, use etc. 2. not elaborate or artificial. 3. unaffected, unassuming. 4. not complex or complicated. [Macquarie Dictionary].

New! SimpleORM 3.0 released with the new DataSet architecture

Overview

SimpleORM is a full featured Java object relational mapping system that avoids exotic technologies such as byte code generation. SimpleWebApp is a framework that can use SimpleORM to implement Java web applications very easily. Simple applications should not be complex to implement.

SimpleORM/Web's extensive use of meta data also enables applications to be deeply customized by external jars. This enables more complex applications to be delivered as core services and separate but deeply integrated plug in modules.

Both are open source projects (Apache style license).

SimpleORM Version 3.*

SimpleORM provides similar functionality to Hibernate by mapping data in a relational database to Java objects in memory. Queries can be specified in terms of Java objects, object identity is aligned with database keys, relationships between objects are maintained and modified objects are automatically flushed to the database with optimistic locks.

But unlike Hibernate, SimpleORM uses a very simple object structure and architecture that avoids the need for complex parsing, byte code processing etc. SimpleORM is small and transparent, packaged in two jars of just 79K and 52K in size, with only one small and optional dependency (Slf4j). (Hibernate is over 2400K plus about 2000K of dependent Jars.) This makes SimpleORM easy to understand and so greatly reduces technical risk.

SimpleORM version 3.* is a major upgrade that provides a distinct DataSet component while simplifying record definitions.

See the SimpleORM White Paper for a full description of how SimpleORM works.

Simplets

See www.simplets.org for a very simple environment for running web applications as servlets. No JSPs, no XML at all. There are two styles of usage, procedure based or a component model. The easiest and quickest way to build simple web applications.

(SimpleWebApp)

A discontinued tool to quickly develop high quality web applications. It provides reusable templates that encapsulate standard user interaction patterns that list, view and update data (CRUD). SimpleWebApp also cut through the layers to integrate interfaces with databases. This means that the only code you needed to write is real application logic rather than large quantities of repetitive glue code. And the code you did write is plain old Java code with minimal reflection etc. because developing web application should be ... simple.

However, SimpleWebAp uses JSP technologies to render the templates. Ultimately, it just became too hard to use JSPs with all their bugs and limitations, so the move to Simplets.

Mailing Lists

SimpleORMAnnounce for occasional announcements about SimpleORM such as new versions and any critical bugs. Send email to SimpleORMAnnounce-subscribe@yahoogroups.com to subscribe.
SimpleORM is the main SimpleORM discussion mailing list. Send email to SimpleORM-subscribe@yahoogroups.com to subscribe. If you subscribe to this group you should also subscribe to the Announce group above.

Download

Download SimpleORM sources.

Contributions

All inquiries, suggestions or offers of assistance most welcome.

Contactinfo@SimpleORM.org .

Many programmers are clever enough to write clever code, a few programmers are clever enough not to.

No XML, no reflection, no annotations. It's simply typesafe java code. It's easy to use. Because it is open source and the amount of source code is rather small, there will be always somebody who will maintain the software. The dataset component is independent from the jdbc-component. -- Thomas Leichner

Additional Keywords: hibernate Java Simple ORM O/R mapping map mapper JDO JPA