Book Image

Web Content Management with Documentum

Book Image

Web Content Management with Documentum

Overview of this book

One of the world leaders in Enterprise Content Management, the EMC Documentum family of applications helps you manage all types of content across multiple departments within a single repository. With the Web Content Management suite of applications, you can efficiently manage content and underlying processes for your Web properties, and ensures that they are responsive to business needs. To fully realize the power of this system can seem daunting, but this book will help you achieve that. With easy to follow examples, this book will take you the simplest and most straightforward route to success. Along the way, you will learn insights that only a seasoned professional would know. Packed with practical examples, you will get hands-on with the powerful features of Documentum to grow your skills and confidence. You will see tips and tricks to handle complexities of the system, and avoid the common errors that waste your time. From installing and getting started with Documentum, you will see how to design and develop Documentum applications, before rounding off with deployment.
Table of Contents (33 chapters)
Web Content Management with Documentum
Credits
About the Author
Acknowledgements
Preface
Frequently Asked Questions and Answers

15.4 Using XDQL in Stylesheets


XDQL is short for eXtensible Document Query Language and as the name suggests, is a convenient mechanism to fire DQL queries from within XML and process query results through XML. Presentation files (or XSL stylesheets) can immensely benefit from XDQL.

DQL queries (only selects and not any updates!) can be invoked from within a presentation file using Documentum's XDQL interface: com.documentum.xml.xdql.IDfXmlQuery.

The set of methods defined in this interface have been implemented by the class DfXmlQuery.

The DQL query results are in the form of XML documents and can be parsed/processed by standard XPath language and other language semantics available in XSL stylesheets.

This leverages the industry-standard and widely used processing powers of XML and XSL via a simple-to-use Documentum interface that serves as an XML wrapper for DQL.

From a performance perspective this is quite reasonable, given the fact that DQL queries are fired within the Docbase and results...