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- Using JDO for Transparent Persistence by William Korb - [Clicks: 146]
Transparent persistence simplifies the programming model for Java object storage and retrieval. Read a case study where JDO allowed for migrating a new schema to employ an interface.
http://www.ftponline.com/javapro/2004_12/online/wkorb_12_08_04/ - Dec, 2004 - JDO Community Process: JDO 2 Queries - Part 2 by Robin Roos - [Clicks: 72]
Welcome to Part II of my four-part series on JDOQL. The articles in this series illustrate the new capabilities which the forthcoming JDO 2.0 standard is bringing to JDOQL. JDOQL Part II - Projection, aggregation and the grouping ad de-duplication (making distinct) of query results.
http://www.theserverside.com/articles/article.tss?l=JDOQueryPart2 - Nov, 2004 - JPOX and Tapestry : The Developer's Guide to the Petshop Example by David Ezzio - [Clicks: 330]
The Petshop example uses Tapestry and JPOX. This document is a guide for building the Petshop example from source. It also discusses the recommended design choices followed by the example code, and it compares the use of JPOX to the use of the Data-Access-Object (DAO) design pattern. JPOX provides a downloadable sample with the code described here.
http://www.jpox.org/docs/1_1/tutorials/tapestry_petstore.html - Nov, 2004 - Developing web applications with Spring Framework and JCredo JDO by Hristo Katsarski - [Clicks: 91]
The purpose of this article is to give developers a quick and practical approach on how to write applications using Spring and JCredo JDO. Adding possibilities to separate presentation from service layer in a few easy steps is yet another reason to pick Spring and JDO and abandon non-developer-friendly DTO approach. Thus, creating persistence-enabled applications is freed of the burden to deal with different transaction demarcation strategies and care of underlying datastore as a whole. With the clearness of Spring and natural access to the persistence domain model of JDO the developer receives a POJO-like feeling still keeping an ACID-like environment. You are encouraged to experiment and modify the supplied example to the extent of your imagination. Good luck!
[Includes source code]
http://www.jcredo.com/home/examples/springjcredo/Spring-JCredo.html - Oct, 2004 - JPOX and Tapestry : The VLib example by David Ezzio - [Clicks: 108]
This tutorial explains how to use JPOX with Tapestry, using the VLib example as the template. JPOX provides a downloadable sample with the code described here.
http://www.jpox.org/docs/1_1/tutorials/tapestry_vlib.html - Oct, 2004 - JDO Community Process: JDO 2 Queries - Part 1 by Robin Roos - [Clicks: 60]
Welcome to Part I of my four-part series on JDOQL. The articles in this series illustrate the new capabilities which the forthcoming JDO 2.0 standard is bringing to JDOQL. JDOQL Part I - New operator and method support, paging of query results, and datastore-delegated "deletion by query".
http://www.theserverside.com/articles/article.tss?l=JDOQueryPart1 - Sep, 2004 - Persisting Model Components With Java Data Objects by N. Alex Rupp - [Clicks: 70]
The sample web application for this issue of the Tech Tips provides a simple example of using JDO. There are several books and dozens of articles available that show how to use the JDO API (see the resources at the end of this tip). So instead of describing how to use JDO API, this tip focuses on the most challenging part of getting started with JDO: setting up the development environment and getting the first object to verifiably persist. The sample web application illustrates how to do that.
[Includes sample code]
http://java.sun.com/developer/EJTechTips/2004/tt0923.html#2 - Sep, 2004 - JPOX and the SpringFramework - [Clicks: 62]
Spring Framework is suited to a wide variety of architectures, and can be utilised in discrete parts of a system, as well as across the whole system. Let's give an example where we want to use Spring for the business and data access tiers of a system. In our system we have a typical business service SampleService, which utilises a data-access SampleDAO. We define these as Java Beans (default constructor, and properties with getters/setters). Once we have defined our beans we then define the "glue" to link them together. This is performed via an XML configuration file. There are many ways you can utilise Spring in this respect. Here's our definition using what is typically the simplest pattern. This file is used to create an ApplicationContext which loads all of these beans at startup automatically.
http://www.jpox.org/docs/1_1/tutorials/springframework.html - Aug, 2004 - Web-Application Persistence: JDO & More by Michael Nash - [Clicks: 52]
Virtually all significant Web applications have a need for a persistence service. Review persistence techniques and examine a fairly new Java API designed to bring some uniformity to these techniques.
http://www.developer.com/java/data/article.php/3331581 - Mar, 2004 - For JDO, the Time Is Now by Bruce Tate - [Clicks: 42]
Without a dominant proprietary solution and with EJB in disarray, the software industry has a significant vacuum in the Java persistence solution market. Many are looking to the next best standard. With the Java Data Objects (JDO) 2.0 specification under way, the timing is right for JDO to seize this opportunity.
http://www.devx.com/Java/Article/20422 - Mar, 2004 - How Do You Spell Freedom? J-D-O by John Neal - [Clicks: 30]
The JDO standard has the legs to let developers make object persistence choices later in the process. Here's an application experiment that shows why JDO may have wings as well.
http://www.ftponline.com/javapro/2004_03/online/jdo_jneal_03_10_04/ - Mar, 2004
- Objects, Data Structures and Abstraction : Using Java
by Elliot Koffman, Paul Wolfgang - [Clicks: 46]
Wiley, Paperback - 2004
- Practical Java Design with Struts and JDO by Amir Firdus - [Clicks: 69]
Many times we read excellent articles with refreshing ideas. Every so often there is a book that inspires us. From time to time we would like to build a prototype. Soon after we sit in front of our computers and face the same problem, days if not weeks to do anything. For this reason, this book and companion sample application have one primary goal, to put together practical and affordable environment that enables fast application development.
[Online book]
http://www.firdus.com/fs-webemp/doc/index.html - 2004
- JDO 2.0: Another shot at transparent persistence by Dion Almaer - [Clicks: 28]
Java Data Objects offers a standard model for transparent persistence (or close to it). The 2.0 version of the specification has given us many new features. For one, it attacks the OR view, with a standard OR mapping schema. It has also learnt from other practical issues that have come out of the use of JDO 1.x. Now you are not locked into JDO-QL (which has been improved), and bytecode twiddling isn't required anymore. This talk discusses what JDO is, and isn't; what JDO 2.0 is all about, and how it can help you scale out your data tier.
http://www.denverjug.org/meetings/files/200409_JDO.zip - Sep, 2004 - (PPT - 406 Kb)
