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  Think Big – Now Think Even Bigger
  Join Us at Internet of Things at Cloud Expo, November 11-13,
at the Javits Center!

The Internet of Things (IoT) is the most profound change in personal and enterprise IT since the creation of the Worldwide Web more than 20 years ago.

All major researchers estimate there will be tens of billions devices - computers, smartphones, tablets, and sensors - connected to the Internet by 2020. This number will continue to grow at a rapid pace for the next several decades.

With major technology companies and startups seriously embracing IoT strategies, now is the perfect time to attend Internet of Things at Cloud Expo in New York City. Learn what is going on, contribute to the discussions, and ensure that your enterprise is as "IoT-Ready" as it can be!

Delegates to Internet of Things at Cloud Expo will be able to attend eight separate, information-packed tracks:

  • Enterprise Cloud
  • Digital Transformation
  • The API Enterprise | Mobility & Security
  • DevOps | Containers & Microservices
  • Cognitive Computing | AI, ML, DL
  • Big Data | Analytics
  • IoT | IIoT | Smart Cities
  • Hot Topics | FinTech | WebRTC

There are 120 breakout sessions in all, with Keynotes, General Sessions, and Power Panels adding to three days of incredibly rich presentations and content.

We'll see you in New York!

Day 3 Keynote at @ThingsExpo | Chris Matthieu, CTO of Octoblu
In his keynote at @ThingsExpo, Chris Matthieu, Director of IoT Engineering at Citrix and co-founder and CTO of Octoblu, focused on building an IoT platform and company. He provided a behind-the-scenes look at Octoblu's platform, business, and pivots along the way (including the Citrix acquisition of Octoblu).
  Themes & Topics to Be Discussed

Consumer IoT
• Wearables
• Smart Appliances
• Smart Cars
• Smartphones 2.0
• Automation
• Smart Travel
• Personal Fitness
• Health Care
• Personalized Marketing
• Customized Shopping
• Personal Finance
• The Digital Divide
• Mobile Cash & Markets
• Games & The IoT
• The Future of Education
• Virtual Reality

Enterprise IoT
• The Business Case for
x IoT
• Smart Grids
• Smart Cities
• Smart Transportation
• The Smart Home
• M2M
• Authentication/Security
• Wiring the IoT
• The Internet of
x Everything
• Digital Transformation
x of Enterprise IT
• Agriculture
• Transportation
• Manufacturing
• Local & State
x Government
• Federal Government

IoT Developers | WebRTC Summit
• Eclipse Foundation
• Cloud Foundry
• Linux Containers
• Node-Red
• Open Source Hardware
• Ajax and the IoT
• Leveraging SOA
• Multi-Cloud IoT
• Evolving Standards
• WebSockets
• Security & Privacy
x Protocols
• GPS & Proximity
x Services
• Bluetooth/RFID/etc
• Nest Labs

The Top Keynotes, the Best Sessions, a Rock Star Faculty and the Most Qualified Delegates of ANY Internet of Things Event!

The future of computing lies in these things. As computing takes a much more active role in our lives it will at the same time become much more invisible. Internet of Things Expo will address the challenges in getting from where we are today to this future.
The high-energy event is a must-attend for senior technologists from CEOs on down – including CIOs, CTOs, directors of infrastructure, VPs of technology, IT directors and managers, network and storage managers, network engineers, enterprise architects, and communications and networking specialists.

@ThingsExpo Power Panel | The World's Many IoTs: Which Are the Most Important?
The Internet of Things is clearly many things: data collection and analytics, wearables, Smart Grids and Smart Cities, the Industrial Internet, and more. Cool platforms like Arduino, Raspberry Pi, Intel's Galileo and Edison, and a diverse world of sensors are making the IoT a great toy box for developers in all these areas. In this Power Panel at @ThingsExpo, panelists discussed what things are the most important, which will have the most profound effect on the world, and what should we expect to see over the next couple of years.
Benefits of Attending the Three-Day Technical Program
  LEARNexactly why Internet of Things is relevant today from an economic, business and technology standpoint.
  HEAR first-hand from industry experts the common issues and requirements for creating a platform for the Internet of Things.
  SEE what new tools and approaches the Internet of Things requires.
  DISCOVER how to drive a distributed approach to the Internet of Things, where applications move to the data.
  FIND OUThow the vast volumes of new data produced by the Internet of Things provides a valuable new source of business insight through advanced analytical techniques.
  MASTER how the ongoing development of smart cities, cars, and houses will enhance connectivity infrastructure.
Lunch Power Panel | Microservices & IoT- Moderated by Jason Bloomberg
In this Power Panel at @DevOpsSummit, moderated by Jason Bloomberg, president of Intellyx, panelists Roberto Medrano, Executive Vice President at Akana; Lori MacVittie, Evangelist for F5 Networks; and Troy Topnik, ActiveState's Technical Product Manager; and Otis Gospodnetic, founder of Sematext; peeled away the buzz and discuss the important architectural principles behind implementing IoT solutions for the enterprise. As remote IoT devices and sensors become increasingly intelligent, they become part of our distributed cloud environment, and we must architect and code accordingly. At the very least, you'll have no problem filling in your buzzword bingo cards.

Perfect Partner for Web Services: Getting to Know XForms
Find out about XForms and why they are the perfect partner for Web Services

HTML forms are one of the best-known techniques for gathering data from a user and submitting that data to a server. However, HTML forms are only simple tools and don't natively support some of the features needed by current Web applications such as sophisticated data validation. Also, the user interface created by HTML forms is essentially hard coded for one device, meaning the same form can't be easily re-tasked for, say, PDAs or mobile phones.

The W3C XForms Recommendation is one way of addressing some of these issues. (XForms is both plural and singular, so there's no XForm, only XForms.) XForms are XML tags embedded in host documents such as XHTML that, when rendered by an XForms-aware browser, give applications some rich and dynamic capabilities such as:

  • XForms can take advantage of the strong data typing offered by XML Schemas to validate user input at the client without using any scripting. More sophisticated data validation is also possible, such as enforcing relationships between different form values.
  • XForms' user interface components are device-independent, meaning they are rendered according to whatever device they are being displayed on.
  • XForms create and consume XML, rather than name/value pairs, making them the ideal client for Web services.
To show how some of these capabilities can be used, this article walks through the development of a simple XForms application that uses an Amazon Web service to query and display a typical book search.

Setting Up for XForms
To take advantage of the power of XForms, we first of all need something over and above the simple HTML forms processing model - an XForms engine. XForms engines are programs that are usually installed on the client side, for example as browser plug-ins, and typically work in the following way:

  • A request is made for a host document containing XForms markup by, for example, opening a document on a file system or issuing an HTTP GET.
  • The XForms engine reads the markup and renders the form. Because XForms' user interface components are defined in an abstract way, the same XForms will be rendered in a way that is appropriate to the client device. Therefore, while a date input field might be rendered as a calendar picker on a desktop browser, on a more constrained device such as a PDA, the same input field may be rendered as a single-line text box.
  • Once the form has been rendered, the users work with it to accomplish what they need to. As they are doing this, events will be fired to, amongst other things, enforce data validation rules, conditionally display different user interface components, or perform calculations. (XForms calculations and field updates are performed using the same depth-first search and topological sorting as spreadsheets.)
  • When the user has completed the form, he or she clicks a button to submit it. The XForms engine will then create an XML instance document and deal with this payload according to the rules defined by the form. The target of a submission is always a URI, which may mean that the XML payload is written to a file, sent to an e-mail address, submitted to a Web service, or to any other HTTP or HTTPS endpoint.
The advantage of having the XForms engine on the client is that all processing happens in one place and unnecessary traffic with the server is avoided. However, until XForms implementations become more common, developers can't always assume that their clients will have the right installation. Alternatively, server-side XForms engines can deliver equivalent XForms functionality to plain clients, usually through a combination of scripting and the normal markup of the host language. This means that clients don't need their own XForms engine, but the markup delivered to the client may be bulky and may not support the full range of XForms features.

For the examples used in this article, I'll be using a client-side XForms engine called FormsPlayer ( Sidebar 1 has more details about some of the XForms engines that are available today.

XForms Basics
XForms are not intended to be stand-alone XML documents, but rather are embedded in what is known as a host "language." Often, this host language will be XHTML, but it might also be Wireless Markup Language (WML) or Scalable Vector Graphics (SVG), among others. Within their host languages, XForms closely follow the Model View Controller (MVC) pattern, which means there is a clean separation of data, presentation, and logic.

The XForms equivalent of the MVC model is, appropriately enough, the model element. An XForms model is really a template for the XML payload that will eventually be created, and it has a dual role in loading the model with any initial data. Listing 1, a basic Hello World XForms, shows a simple model inside the head of an XHTML document. Models are typically placed in the head to emphasize the fact that they are a non-rendered component. Any well-formed XML document can be placed within the model's instance sub-element, or it can contain a pointer to an external instance document Figure 1).

One of the key advantages XForms have over HTML forms is the ability to perform data validation, constraint checking, and calculations without the need for client-side scripting. XForms allows this to be done in a number of ways.

  • An XML Schema can be associated with the instance data elements. For small models, these constraints and validations can also be specified inline rather than referring to a separate XML Schema.
  • The bind element can be used to establish a data binding between user interface controls and elements in the instance document and at the same time specify a data type for the instance element. The bind element also contains any calculations or restrictions (as XPath expressions) that need to be applied.
The last part of the XForms model is the submission element, which uses a URI to describe what should be done with the XML payload once it has been populated. In our Hello World example, the XML payload is simply written out to a named file when the user clicks on the Write to Disk button.

Once the model is defined, all or part of it is exposed through user interface components. Following the MVC pattern, XForms user interface components provide a view onto the model, with the two being linked by either XPath expressions as in Listing 1, or through a bind element. Whereas HTML defines explicit user interface components such as radio buttons and check boxes, XForms defines a set of abstract components. These abstract components say what a component should do, but the actual rendering will depend on the host language and the device on which the components will be displayed.

While the XForms engine takes care of most of the rendering of the XForms user interface, developers can still have a style influence in a couple of ways. XForms can be directly styled according to the features available in the host language, so when using XHTML, this might mean using tables, headings, and other XHTML tags, with the XForms components arranged within these. However, by hard coding the styling details in this way, the device-independence of the form is limited.

The alternative styling approach is to use only the minimum host-language structure necessary to accommodate the XForms markup. Again, when using XHTML, this would mean placing the XForms model in the head section and the abstract user interface definition and bindings in the body section. An external stylesheet, such as Listing 2, would then provide the colors, fonts, and other formatting for each particular device.

The final part of the MVC pattern, the controller, equates to XForms events and actions. Events in XForms are defined by the XML Events specification, which in turn provides an element-based interface to the Document Object Model (DOM) Level 2 event syntax (see the Resources for more details). Meanwhile, XForms actions are the handlers that respond to XForms events. This means that XForms follow the well-known Gang of Four Observer pattern in which observers are attached to particular elements, which are notified when nominated events occurs, and then certain actions are performed.

About Craig Caulfield
Craig Caulfield is a senior software engineer for a defense and commercial software house in Perth, Western Australia. He has a Bachelors degree in Computer Science, a Masters degree in Software Engineering, and holds certifications in Java, XML, DB2, UML, MySQL, and WebSphere.

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Reader Feedback: Page 1 of 1

HTML forms are one of the best-known techniques for gathering data from a user and submitting that data to a server. However, HTML forms are only simple tools and don't natively support some of the features needed by current Web applications such as sophisticated data validation. Also, the user interface created by HTML forms is essentially hard coded for one device, meaning the same form can't be easily re-tasked for, say, PDAs or mobile phones.

HTML forms are one of the best-known techniques for gathering data from a user and submitting that data to a server. However, HTML forms are only simple tools and don't natively support some of the features needed by current Web applications such as sophisticated data validation. Also, the user interface created by HTML forms is essentially hard coded for one device, meaning the same form can't be easily re-tasked for, say, PDAs or mobile phones.

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2016 | 2015 | 2014 | 2013 | 2012
This week I had the pleasure of delivering the opening keynote at Cloud Expo New York. It was amazing to be back in the great city of New York with thousands of cloud enthusiasts eager to learn about the next step on their journey to embracing a cloud-first worldl."
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Thank you @ThingsExpo for such a great event. All of the people we met over the past three days makes us confident IoT has a bright future."
One of the best conferences we have attended in a while. Great job, Cloud Expo team! Keep it going."


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NanoVMs is the only production ready unikernel infrastructure solution on the market today. Unikernels prevent server intrusions by isolating applications to one virtual machine with no users, no shells and no way to run other programs on them. Unikernels run faster and are lighter than even docker containers.
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