Find out how to expose XQuery data integration services by invoking them through a Java servlet using a REST interface.
by Jonathan Robie
March 9, 2007
any web applications exchange data as XML, but that data is usually stored in and queried from relational databases, CRM, ERP, proprietary repositories, and a hodgepodge of other systems. Unfortunately, the languages most commonly used for creating or processing data on the web were designed neither for processing XML nor for integrating data among multiple heterogeneous sources. These are precisely the tasks for which the XQuery language was designed.
This paper shows how to use XQuery for data integration, and how to expose an XQuery as a RESTful data service using a Java servlet. Listing 1 contains the source code for the servlet. This servlet uses the name and external variables of any XQuery to provide a REST interface to the query and deploys the query.
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any web applications exchange data as XML, but that data is usually stored in and queried from relational databases, CRM, ERP, proprietary repositories, and a hodgepodge of other systems. Unfortunately, the languages most commonly used for creating or processing data on the web were designed neither for processing XML nor for integrating data among multiple heterogeneous sources. These are precisely the tasks for which the XQuery language was designed.
