Achieving Platform-Independent Database Access with Open SQL/SQLJ - Embedded SQL for Java in the SAP Web Application Server

  • by Adrian Goerler, Java Server Technology Group, SAP AG
  • Andreas Fischbach, Java Server Technology Group, SAP
  • January 15, 2004
Starting with Release 6.20, the SAP Web Application Server (Web AS) contains a full-fledged J2EE server that provides standard Java support for SAP applications. However, the techniques for accessing relational databases directly from Java in Web AS 6.20 remained largely platform-specific and code-intensive. Web AS 6.30 introduces Open SQL for Java, a framework for relational database access that provides an API - Open SQL/SQLJ - for achieving true platform-independent database access with design-time checking. This article introduces you to Open SQL/SQLJ and, using several practical examples, shows you how to take full advantage of its key features.

Adrian Goerler

Adrian Görler studied physics at the Ruprecht-Karls-University in Heidelberg, Germany, where he specialized in computational biophysics. He received his doctorate at the Max-Planck-Institute for Medical Research, Heidelberg, and did postdoctoral research work in various international laboratories. In 1999, Adrian joined SAP and became a member of the Business Programming Languages group, where he worked as a kernel developer responsible for the implementation and maintenance of Open SQL as well as Native SQL in ABAP. Since 2001, Adrian has been a member of the Java Server Technology group, where he has been working on the implementation of Open SQL for Java, especially Open SQL/SQLJ.

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Andreas Fischbach

Andreas Fischbach studied Commercial Information Technology and received his diploma in 1996. During that same year, he joined the SAP/Informix porting team, where he was responsible for Informix-specific aspects of the SAP R/3 system. In 2001, Andreas started working on Java persistence in the Java Server Technology group. He focuses mainly on relational persistence, in particular SQLJ. Additionally, Andreas is engaged in object persistence with JDO.

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