Build, protect and deploy apps across any platform and mobile device
Leverage a complete UI toolbox for web, mobile and desktop development
Automate UI, load and performance testing for web, desktop and mobile
Rapidly develop, manage and deploy business apps, delivered as SaaS in the cloud
Automate decision processes with a no-code business rules engine
Build mobile apps for iOS, Android and Windows Phone
Deploy automated machine learning to accurately predict machine failures with technology optimized for Industrial IoT.
Optimize data integration with high-performance connectivity
Connect to any cloud or on-premises data source using a standard interface
Build engaging multi-channel web and digital experiences with intuitive web content management
This is the first post in a series about XQJ (JSR 225). The XQJ initiative aims to provide the standard Java API to access XQuery implementations. Eventually XQJ will be for XQuery what JDBC means for SQL.
XQJ is currently in public review, the specification can be downloaded here.
I hope this series will give a good overview of the major interfaces and functionality offered by XQJ, mostly through example code. The majority of the code should be implementation independent, but I have to admit, it will be tested using DataDirect XQuery 3.0, which supports the XQJ Public Draft.
We have today the following essays in the XQJ series (the list is updated as more posts become available),
Let's start with our first simple XQJ application; the XQuery/XQJ version of "Hello World!".
[cc lang="java"]XQDataSource xqjd = new DDXQDataSource();
XQConnection xqjc = xqjd.getConnection();
XQExpression xqje = xqjc.createExpression();
XQSequence xqjs = xqje.executeQuery("'Hello World!'");
[/cc]I assume most of it speaks for itself. But don't worry if you have some questions, things will become clear in the upcoming posts.
Some of you might recognize some of the JDBC concepts in the code example above.
Indeed, the XQJ expert group decided to make XQJ stylistic consistent with JDBC. Similar to JDBC is has concepts like,
But at the same time, XQuery is not SQL, as such XQJ differs from JDBC,
The next post in this series will introduce data sources and setting up connections.
digg_skin = 'compact';
View all posts from Marc Van Cappellen on the Progress blog. Connect with us about all things application development and deployment, data integration and digital business.
Copyright © 2017 Progress Software Corporation and/or its subsidiaries or affiliates.
All Rights Reserved.
Progress, Telerik, and certain product names used herein are trademarks or registered trademarks of Progress Software Corporation and/or one of its subsidiaries or affiliates in the U.S. and/or other countries. See Trademarks for appropriate markings.