Welcome!

Industrial IoT Authors: Liz McMillan, Gopala Krishna Behara, Sridhar Chalasani, Tirumala Khandrika, William Schmarzo

Related Topics: Industrial IoT

Industrial IoT: Article

XML Heaven or XML Hell?

Why anti-XML sentiment is misguided

"With proper markup/logic separation, a POJO data model, and a refreshing lack of XML..." So begins the introduction to one of the current crop of open source Web application frameworks on its Web site. Sadly this seems to be a common sentiment within the Java framework development community; the phrase "XML Hell" is thrown around with the same vehemence once reserved for the "DLL Hell" so characteristic of early versions of Microsoft Windows. Is this wisdom genuine or apocryphal? In this article I will examine some of the reasons why anti-XML sentiment is misguided.

The Roots of the Myth
Where does this distaste for XML in the Java framework development community come from? Several factors immediately spring to mind.

First of all, XML's lack of tooling support is a significant issue. Let's use the XML-driven framework Apache Struts as an example. Though popular, Struts is often held up as an illustration of how XML-configured frameworks are bad (although many making this claim are competitors of Struts). In reality, I think the problem has nothing to do with XML; rather it's the fact that the Struts page-flow metadata represents a series of complex relationships. Of course the raw XML that describes these relationships is hard to understand, but that's not really a problem with the XML itself. Any textual description of a page flow, in code or metadata, is hard to understand. Put that same relationship map into the form of a diagram and the problem goes away. Indeed when mainstream development environments such as Oracle JDeveloper and Eclipse started to provide visual diagramming for Struts, the framework's popularity skyrocketed. An inability to understand something often translates into dislike - perhaps XML has been the innocent bystander in a bigger battle against perceived complexity.

Overuse also adds to the negative perception of XML. While great for describing complex relationships, XML can be viewed as overkill for simple framework configuration. Enterprise JavaBeans (EJB) are often held up as an example of how badly XML can be overused. Interestingly one of the key features of the latest version of the EJB specification (3.0) addressed the issue head on. In the latest version, although XML metadata is still a valid option for describing the entities, code annotations and "configuration by exception" are the norm for describing simpler relationships. XML is only used for the corner cases.

Are Annotations the Future?
After EJB adopted annotations as a configuration option, the floodgates opened and annotations seemed to be the one true path to framework configuration. New annotation-based frameworks such as Seam were developed, and old frameworks such as Struts were hastily retrofitted in a misguided attempt to gain favor.

More Stories By Duncan Mills

Duncan Mills is senior director of product management for Oracle's Application Development Tools - including the JDeveloper IDE, and the Oracle Application Development Framework. He has been in the IT industry for the past 19 years working with Oracle, Java, and a variety of more obscure programming languages and frameworks along the way. Duncan is the co-author of the Oracle Press book: Oracle JDeveloper 10g for Forms and PL/SQL Developers - a Guide to Web Development with Oracle ADF.

Comments (1) View Comments

Share your thoughts on this story.

Add your comment
You must be signed in to add a comment. Sign-in | Register

In accordance with our Comment Policy, we encourage comments that are on topic, relevant and to-the-point. We will remove comments that include profanity, personal attacks, racial slurs, threats of violence, or other inappropriate material that violates our Terms and Conditions, and will block users who make repeated violations. We ask all readers to expect diversity of opinion and to treat one another with dignity and respect.


Most Recent Comments
hkara 11/25/08 11:36:20 AM EST

Well, there is truth in this article, but there is
also truth in the developers that speak of
"XML hell". XML is great when computers speak to
computers, and it was made in great part for that :
to quickly write reliable and fast parsers for
structured documents. Unfortunately, just like when
Tim Berners Lee never thought that people would
actually *write* html using text editors, people
started writing xml with text editors.
Why ? Because there's nothing else, most of the
time. Imagine what would have happened if XML had
existed when relational databases were invented...
Imagine expressing SQL queries in XML (this actually
exists, but it's for machines).

When people are not in contact with XML directly,
XML isn't a problem. When we edit an SVG document
in Inkscape, when I change my preferences in Eclipe,
I use an XML document, but through a specialized
user interface that does not make the whole thing
cumbersome and painful. Yet the documents produced
have all the advandages of XML : portability, reliability, ease of parsing, etc. So I guess the
problem is more : how easy is it to configure the
system ? If you have to edit XML directly, chance
are that this is difficult. It may be powerful,
portable, etc, but it is still difficult.
I agree that annotations are not the right thing.
For me, the right thing is either a specialized
language using an LL or LR parser, or a specialized
editor that manipulates the XML for the user.

Besides that, I think that your article is hitting the right point.

Best regards,

Harry

@ThingsExpo Stories
To get the most out of their data, successful companies are not focusing on queries and data lakes, they are actively integrating analytics into their operations with a data-first application development approach. Real-time adjustments to improve revenues, reduce costs, or mitigate risk rely on applications that minimize latency on a variety of data sources. In his session at @BigDataExpo, Jack Norris, Senior Vice President, Data and Applications at MapR Technologies, reviewed best practices to ...
"Digital transformation - what we knew about it in the past has been redefined. Automation is going to play such a huge role in that because the culture, the technology, and the business operations are being shifted now," stated Brian Boeggeman, VP of Alliances & Partnerships at Ayehu, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
"Evatronix provides design services to companies that need to integrate the IoT technology in their products but they don't necessarily have the expertise, knowledge and design team to do so," explained Adam Morawiec, VP of Business Development at Evatronix, in this SYS-CON.tv interview at @ThingsExpo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
Smart cities have the potential to change our lives at so many levels for citizens: less pollution, reduced parking obstacles, better health, education and more energy savings. Real-time data streaming and the Internet of Things (IoT) possess the power to turn this vision into a reality. However, most organizations today are building their data infrastructure to focus solely on addressing immediate business needs vs. a platform capable of quickly adapting emerging technologies to address future ...
In his Opening Keynote at 21st Cloud Expo, John Considine, General Manager of IBM Cloud Infrastructure, led attendees through the exciting evolution of the cloud. He looked at this major disruption from the perspective of technology, business models, and what this means for enterprises of all sizes. John Considine is General Manager of Cloud Infrastructure Services at IBM. In that role he is responsible for leading IBM’s public cloud infrastructure including strategy, development, and offering m...
Product connectivity goes hand and hand these days with increased use of personal data. New IoT devices are becoming more personalized than ever before. In his session at 22nd Cloud Expo | DXWorld Expo, Nicolas Fierro, CEO of MIMIR Blockchain Solutions, will discuss how in order to protect your data and privacy, IoT applications need to embrace Blockchain technology for a new level of product security never before seen - or needed.
The 22nd International Cloud Expo | 1st DXWorld Expo has announced that its Call for Papers is open. Cloud Expo | DXWorld Expo, to be held June 5-7, 2018, at the Javits Center in New York, NY, brings together Cloud Computing, Digital Transformation, Big Data, Internet of Things, DevOps, Machine Learning and WebRTC to one location. With cloud computing driving a higher percentage of enterprise IT budgets every year, it becomes increasingly important to plant your flag in this fast-expanding busin...
SYS-CON Events announced today that Synametrics Technologies will exhibit at SYS-CON's 22nd International Cloud Expo®, which will take place on June 5-7, 2018, at the Javits Center in New York, NY. Synametrics Technologies is a privately held company based in Plainsboro, New Jersey that has been providing solutions for the developer community since 1997. Based on the success of its initial product offerings such as WinSQL, Xeams, SynaMan and Syncrify, Synametrics continues to create and hone inn...
Digital Transformation (DX) is not a "one-size-fits all" strategy. Each organization needs to develop its own unique, long-term DX plan. It must do so by realizing that we now live in a data-driven age, and that technologies such as Cloud Computing, Big Data, the IoT, Cognitive Computing, and Blockchain are only tools. In her general session at 21st Cloud Expo, Rebecca Wanta explained how the strategy must focus on DX and include a commitment from top management to create great IT jobs, monitor ...
A strange thing is happening along the way to the Internet of Things, namely far too many devices to work with and manage. It has become clear that we'll need much higher efficiency user experiences that can allow us to more easily and scalably work with the thousands of devices that will soon be in each of our lives. Enter the conversational interface revolution, combining bots we can literally talk with, gesture to, and even direct with our thoughts, with embedded artificial intelligence, whic...
Cloud Expo | DXWorld Expo have announced the conference tracks for Cloud Expo 2018. Cloud Expo will be held June 5-7, 2018, at the Javits Center in New York City, and November 6-8, 2018, at the Santa Clara Convention Center, Santa Clara, CA. Digital Transformation (DX) is a major focus with the introduction of DX Expo within the program. Successful transformation requires a laser focus on being data-driven and on using all the tools available that enable transformation if they plan to survive ov...
Recently, REAN Cloud built a digital concierge for a North Carolina hospital that had observed that most patient call button questions were repetitive. In addition, the paper-based process used to measure patient health metrics was laborious, not in real-time and sometimes error-prone. In their session at 21st Cloud Expo, Sean Finnerty, Executive Director, Practice Lead, Health Care & Life Science at REAN Cloud, and Dr. S.P.T. Krishnan, Principal Architect at REAN Cloud, discussed how they built...
Recently, WebRTC has a lot of eyes from market. The use cases of WebRTC are expanding - video chat, online education, online health care etc. Not only for human-to-human communication, but also IoT use cases such as machine to human use cases can be seen recently. One of the typical use-case is remote camera monitoring. With WebRTC, people can have interoperability and flexibility for deploying monitoring service. However, the benefit of WebRTC for IoT is not only its convenience and interopera...
With tough new regulations coming to Europe on data privacy in May 2018, Calligo will explain why in reality the effect is global and transforms how you consider critical data. EU GDPR fundamentally rewrites the rules for cloud, Big Data and IoT. In his session at 21st Cloud Expo, Adam Ryan, Vice President and General Manager EMEA at Calligo, examined the regulations and provided insight on how it affects technology, challenges the established rules and will usher in new levels of diligence arou...
SYS-CON Events announced today that Evatronix will exhibit at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Evatronix SA offers comprehensive solutions in the design and implementation of electronic systems, in CAD / CAM deployment, and also is a designer and manufacturer of advanced 3D scanners for professional applications.
No hype cycles or predictions of a gazillion things here. IoT is here. You get it. You know your business and have great ideas for a business transformation strategy. What comes next? Time to make it happen. In his session at @ThingsExpo, Jay Mason, an Associate Partner of Analytics, IoT & Cybersecurity at M&S Consulting, presented a step-by-step plan to develop your technology implementation strategy. He also discussed the evaluation of communication standards and IoT messaging protocols, data...
In his session at 21st Cloud Expo, Raju Shreewastava, founder of Big Data Trunk, provided a fun and simple way to introduce Machine Leaning to anyone and everyone. He solved a machine learning problem and demonstrated an easy way to be able to do machine learning without even coding. Raju Shreewastava is the founder of Big Data Trunk (www.BigDataTrunk.com), a Big Data Training and consulting firm with offices in the United States. He previously led the data warehouse/business intelligence and B...
Nordstrom is transforming the way that they do business and the cloud is the key to enabling speed and hyper personalized customer experiences. In his session at 21st Cloud Expo, Ken Schow, VP of Engineering at Nordstrom, discussed some of the key learnings and common pitfalls of large enterprises moving to the cloud. This includes strategies around choosing a cloud provider(s), architecture, and lessons learned. In addition, he covered some of the best practices for structured team migration an...
22nd International Cloud Expo, taking place June 5-7, 2018, at the Javits Center in New York City, NY, and co-located with the 1st DXWorld Expo will feature technical sessions from a rock star conference faculty and the leading industry players in the world. Cloud computing is now being embraced by a majority of enterprises of all sizes. Yesterday's debate about public vs. private has transformed into the reality of hybrid cloud: a recent survey shows that 74% of enterprises have a hybrid cloud ...
22nd International Cloud Expo, taking place June 5-7, 2018, at the Javits Center in New York City, NY, and co-located with the 1st DXWorld Expo will feature technical sessions from a rock star conference faculty and the leading industry players in the world. Cloud computing is now being embraced by a majority of enterprises of all sizes. Yesterday's debate about public vs. private has transformed into the reality of hybrid cloud: a recent survey shows that 74% of enterprises have a hybrid cloud ...