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Publish dynamic XML content with Cocoon 2, Part 3: Cocoon 2: Build database-driven sites

Generate and publish XML and HTML content based on database data

Leigh Dodds (leigh@xmlhack.com), Developer and editor, Ingenta, Ltd.
Photo of Leigh Dodds
Leigh Dodds is team leader of the Research and Technology Group at Ingenta, Ltd. He has five years of experience in developing on the Java platform, and he has spent the last three years working with XML and related technologies. Leigh is also a contributing editor to xmlhack.com, and has been writing the regular "XML-Deviant" column on XML.com since February 2000. He holds a bachelor's degree in biological science, and a master's in computing. When he's not wrestling with pointy brackets, Leigh can be found making silly noises with his son, Ethan.

Summary:  The first two tutorials in this series introduced the basic concepts of the Cocoon 2 architecture and XML Server Pages (XSP) as a means for creating and publishing dynamic XML content. This tutorial goes a natural step further and discusses how to use Cocoon 2 to generate and publish XML and HTML content based on database data. Any Web site that has reached a certain size and complexity will require a database to manage at least part, if not all, of its data.

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Date:  30 May 2002
Level:  Introductory
PDF:  A4 and Letter (116 KB | 30 pages)Get Adobe® Reader®

Activity:  4176 views
Comments:  

Summary

Where next?

Dynamic content publishing is an everyday reality on the Web. To meet this demand, any mature server framework must provide functionality for working with information held in relational databases. This tutorial has reviewed the main components in Cocoon 2 that support this functionality.

The initial section of the tutorial contained detailed instructions for configuring data sources in Cocoon 2, allowing the server to manage connection pools on behalf of individual applications. This configuring involves installing and loading a JDBC driver and configuring various resource management options for the connection pool.

The tutorial then progressed to describing the basic elements in the ESQL logicsheet. This logicsheet provides the expected range of functionality required for working with database data, including selecting, inserting, updating, and deleting records. A number of examples based around a sample database illustrated this functionality. In particular, various options for mapping relational data into XML documents were discussed. These included options for element naming, processing query results with custom logic, and creating hierarchical documents using nested queries and data grouping.

Lastly, to ensure data integrity in user-submitted data, the tutorial reviewed the functionality provided by the Form Validator Action and its supporting logicsheet. These components provide a means to declaratively associate validation rules with HTTP request parameters.

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static.content.url=http://www.ibm.com/developerworks/js/artrating/
SITE_ID=1
Zone=XML
ArticleID=138221
TutorialTitle=Publish dynamic XML content with Cocoon 2, Part 3: Cocoon 2: Build database-driven sites
publish-date=05302002
author1-email=leigh@xmlhack.com
author1-email-cc=dwxed@us.ibm.com

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