Who Is Implementing JDO 1.0?


There has been worldwide interest in the JDO standard. A number of vendors are selling implementations that target relational databases. These implementations generally work with any relational database for which there is a JDBC 2.0 driver. The open source example code that accompanies this book features the products of three vendors that target relational databases. The three vendors are SolarMetric (http://www.solarmetric.com) with the Kodo implementation, LIBeLIS (http://www.libelis.com) with the Lido implementation, and Signsoft (http://www.signsoft.com) with the IntelliBO implementation. They were selected because they had early versions of JDO, they updated their versions regularly, and they had free trial versions and good support.

JDO implementations are also starting to appear on the ODBMS side. Poet (http://www.poet.com) is providing a JDO interface to its FastObjects database. Poet and other vendors are supporting the JDOCentral Web site (http://www.JDOCentral.com). This site has a lot of information on JDO and available implementations

As part of the specification process, Sun Microsystems is providing a reference implementation of JDO using a b-tree file datastore. Sun also hosts the informal expert group's Web page at http://access1.sun.com/jdo.

Open source implementations of JDO are starting to appear. ObJectRelationalBridge at Apache's Jakarta project (http://jakarta.apache.org/ojb) is an ODMG 3.0-compliant object database that is in the process of implementing a JDO interface. In addition, TriActive JDO and XORM can be found at http://sourceforge.net.




Using and Understanding Java Data Objects
Using and Understanding Java Data Objects
ISBN: 1590590430
EAN: 2147483647
Year: 2005
Pages: 156
Authors: David Ezzio

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