Yaron Telem and Shay Litvak are IT/J2EE architects, working for "Mamdas", involved in the construction of large enterprise systems in the last 5 years. Yaron received his B.Sc. and M.Sc. in Computer Science and Mathematics from Tel-Aviv University. Shay received his B.Sc. in Computer Science from the Israel Institute of Technology.
As part of building the infrastructures for a large J2EE project, we've spent
the last few months designing and implementing a JDO-based O/R persistency
framework. This framework provides our business logic programmers with the
following features: an interface-based abstract view of the data-layer with
full OO semantics, zero-need knowledge of the object-to-database mapping
details, "delta" support, and more. This article presents the persistency
framework that we've built on top of JDO, and offers a commentary on the
current advantages and shortcomings based on our experience with the JDO
specification.
Choosing an Object Persistency Layer
Choosing the right object persistency layer is a major milestone in almost
every J2EE project. Given the state of today's market, you should follow the
"buy, don't reinvent" rule (assuming your object persistency demands haven't ... (more)
Yaron Telem and Shay Litvak are IT/J2EE architects, working for "Mamdas", involved in the construction of large enterprise systems in the last 5 years. Yaron received his B.Sc. and M.Sc. in Computer Science and Mathematics from Tel-Aviv University. Shay received his B.Sc. in Computer Science from the Israel Institute of Technology.
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