|By Bruno Schaeffer||
|March 1, 2008 05:00 AM EST||
Rich Internet Applications pick up the ball where plain Web applications dropped it: they promise to bring the power of desktop applications to the Web. Desktop applications almost went out of fashion with the advent of Web applications. But most people still prefer the rich user interface (UI) and interactivity of desktop applications such as Outlook compared to their Web-based siblings such as GMail and Yahoo! Mail. In many cases the convenience of ubiquity compensates for the inferior or cumbersome user interface.
Client-server applications with rich user interfaces first emerged at the beginning of the nineties. Usually implemented in C++ or Smalltalk, they followed a fat-client approach, the predominant client-server architecture at this time. The principal way to organize the presentation layer of such applications was the MVC model. The concept was first proposed by Trygve Reenskaug (see http://heim.ifi.uio.no/~trygver/2007/MVC_Originals.pdf) for the Smalltalk environment. As with any proven object-oriented design, MVC splits up the responsibilities of a user interface component into domain data (Model), rendering (View), and event handling (Controller). Quite often, view and controller are merged together, though.
Today’s GUI component libraries still make use of MVC. For example, most non-trivial UI components in Swing employ some sort of MVC. However, if one tries to apply MVC to complex (form-based) applications, which is typical for desktop or Rich Internet Applications, experience shows that criteria such as clean design, maintainability, or reusability cannot be met. There are several reasons:
- What is the model of a form based application with a rich UI? Most developers point to the business object to be rendered in the form as the model. A form-based RIA has more model states than just the business object, though. This additional state is usually kept in the view class and increases the complexity of the view.
- The presentation logic of a Rich Internet Application is vastly more complex compared to a traditional Web application. The presentation logic has to deal with more events caused by extended interactivity. Another feature of RIAs is an up-to-date rendering of the presentation state. For example, UI components may be enabled/disabled or visible/invisible depending on the state of the application. This is also part of the additional model state as mentioned above. On top of that, RIAs feature instant validation (without interrupting a user’s flow of work by throwing a modal dialog into their face). This “silent” validation has to be handled (at least partly) by the presentation logic as well. Naïve design puts all of these aspects into the view class. As a result, the view class becomes overly complex, hardly reusable, and difficult to maintain.
- Automated testing of such view classes can only be accomplished by running the user interface. Tests are executed by triggering user events through a test tool or accessing the components through a library (e.g. Jemmy for Swing component library). This way of testing is slow and fragile: running hundreds or thousands of UI tests takes quite some time and changes to the user interface are likely to break the tests resulting in false negatives.
As a company specializing in RIA, we at Canoo have witnessed quite a few transitions from plain ugly Web applications to the brave new world of RIA. Some of our observations:
- Typical Web developers have not heard of MVC and try to design RIAs like they would design a typical HTML application.
- Seasoned developers who may have had some experience with fat client-server applications try to apply MVC concepts in the same way that they did in the nineties, without adapting to the new scenario.
Both approaches have their weaknesses and lead to poor results. In part two of this blog post series - “The world needs more models” - we will discuss possible remedies to this situation.
SYS-CON Events announced today that Dyn, the worldwide leader in Internet Performance, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. Dyn is a cloud-based Internet Performance company. Dyn helps companies monitor, control, and optimize online infrastructure for an exceptional end-user experience. Through a world-class network and unrivaled, objective intelligence into Internet conditions, Dyn ensures traffic gets delivered faster, safer, and more reliably than ever.
Apr. 26, 2015 07:00 AM EDT Reads: 2,552
SYS-CON Events announced today that Open Data Centers (ODC), a carrier-neutral colocation provider, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place June 9-11, 2015, at the Javits Center in New York City, NY. Open Data Centers is a carrier-neutral data center operator in New Jersey and New York City offering alternative connectivity options for carriers, service providers and enterprise customers.
Apr. 26, 2015 06:45 AM EDT Reads: 2,904
The WebRTC Summit 2015 New York, to be held June 9-11, 2015, at the Javits Center in New York, NY, announces that its Call for Papers is open. Topics include all aspects of improving IT delivery by eliminating waste through automated business models leveraging cloud technologies. WebRTC Summit is co-located with 16th International Cloud Expo, @ThingsExpo, Big Data Expo, and DevOps Summit.
Apr. 26, 2015 06:45 AM EDT Reads: 2,468
SYS-CON Events announced today that Vitria Technology, Inc. will exhibit at SYS-CON’s @ThingsExpo, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. Vitria will showcase the company’s new IoT Analytics Platform through live demonstrations at booth #330. Vitria’s IoT Analytics Platform, fully integrated and powered by an operational intelligence engine, enables customers to rapidly build and operationalize advanced analytics to deliver timely business outcomes for use cases across the industrial, enterprise, and consumer segments.
Apr. 26, 2015 06:00 AM EDT Reads: 2,660
SYS-CON Events announced today that Alert Logic, the leading provider of Security-as-a-Service solutions for the cloud, has been named “Bronze Sponsor” of SYS-CON's 16th International Cloud Expo® and DevOps Summit 2015 New York, which will take place June 9-11, 2015, at the Javits Center in New York City, NY, and the 17th International Cloud Expo® and DevOps Summit 2015 Silicon Valley, which will take place November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA.
Apr. 26, 2015 05:45 AM EDT Reads: 2,070
BroadSoft on Tuesday announced that it is a recipient of the 2014 Frost & Sullivan Market Leadership Award in the Hosted/Cloud Internet Protocol (IP) Telephony market for Latin America. According to Frost & Sullivan market research, the Latin America (LATAM) hosted/cloud Internet Protocol (IP) telephony market, including integrated unified communications and collaboration (UC&C) applications, is currently experiencing a rapid growth trajectory and is expected to exhibit a tenfold rise in annual revenues in the 2013-2020 period. With more than 600 cloud deployments internationally, BroadSoft w...
Apr. 26, 2015 05:00 AM EDT Reads: 2,405
SYS-CON Events announced today that Akana, formerly SOA Software, has been named “Bronze Sponsor” of SYS-CON's 16th International Cloud Expo® New York, which will take place June 9-11, 2015, at the Javits Center in New York City, NY. Akana’s comprehensive suite of API Management, API Security, Integrated SOA Governance, and Cloud Integration solutions helps businesses accelerate digital transformation by securely extending their reach across multiple channels – mobile, cloud and Internet of Things. Akana enables enterprises to share data as APIs, connect and integrate applications, drive part...
Apr. 26, 2015 05:00 AM EDT Reads: 2,050
Temasys has announced senior management additions to its team. Joining are David Holloway as Vice President of Commercial and Nadine Yap as Vice President of Product. Over the past 12 months Temasys has doubled in size as it adds new customers and expands the development of its Skylink platform. Skylink leads the charge to move WebRTC, traditionally seen as a desktop, browser based technology, to become a ubiquitous web communications technology on web and mobile, as well as Internet of Things compatible devices.
Apr. 26, 2015 04:45 AM EDT Reads: 2,334
SYS-CON Events announced today that CommVault has been named “Bronze Sponsor” of SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY, and the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. A singular vision – a belief in a better way to address current and future data management needs – guides CommVault in the development of Singular Information Management® solutions for high-performance data protection, universal availability and sim...
Apr. 26, 2015 04:45 AM EDT Reads: 2,068
SYS-CON Events announced today that SafeLogic has been named “Bag Sponsor” of SYS-CON's 16th International Cloud Expo® New York, which will take place June 9-11, 2015, at the Javits Center in New York City, NY. SafeLogic provides security products for applications in mobile and server/appliance environments. SafeLogic’s flagship product CryptoComply is a FIPS 140-2 validated cryptographic engine designed to secure data on servers, workstations, appliances, mobile devices, and in the Cloud.
Apr. 26, 2015 04:30 AM EDT Reads: 2,125
SYS-CON Events announced today that StorPool Storage will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. StorPool is distributed storage software that allows service providers, enterprises and other cloud builders to run data storage on standard x86 servers, instead of using expensive and inefficient storage arrays (SAN).
Apr. 26, 2015 04:00 AM EDT Reads: 2,249
GENBAND has announced that SageNet is leveraging the Nuvia platform to deliver Unified Communications as a Service (UCaaS) to its large base of retail and enterprise customers. Nuvia’s cloud-based solution provides SageNet’s customers with a full suite of business communications and collaboration tools. Two large national SageNet retail customers have recently signed up to deploy the Nuvia platform and the company will continue to sell the service to new and existing customers. Nuvia’s capabilities include HD voice, video, multimedia messaging, mobility, conferencing, Web collaboration, deskt...
Apr. 26, 2015 03:30 AM EDT Reads: 1,923
Sonus Networks introduced the Sonus WebRTC Services Solution, a virtualized Web Real-Time Communications (WebRTC) offer, purpose-built for the Cloud. The WebRTC Services Solution provides signaling from WebRTC-to-WebRTC applications and interworking from WebRTC-to-Session Initiation Protocol (SIP), delivering advanced real-time communications capabilities on mobile applications and on websites, which are accessible via a browser.
Apr. 26, 2015 02:45 AM EDT Reads: 2,004
SYS-CON Events announced today that Site24x7, the cloud infrastructure monitoring service, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. Site24x7 is a cloud infrastructure monitoring service that helps monitor the uptime and performance of websites, online applications, servers, mobile websites and custom APIs. The monitoring is done from 50+ locations across the world and from various wireless carriers, thus providing a global perspective of the end-user experience. Site24x7 supports monitoring H...
Apr. 26, 2015 02:30 AM EDT Reads: 2,091
SYS-CON Events announced today that Intelligent Systems Services will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. Established in 1994, Intelligent Systems Services Inc. is located near Washington, DC, with representatives and partners nationwide. ISS’s well-established track record is based on the continuous pursuit of excellence in designing, implementing and supporting nationwide clients’ mission-critical systems. ISS has completed many successful projects in Healthcare, Commercial, Manufacturing, ...
Apr. 26, 2015 02:15 AM EDT Reads: 2,819
“With easy-to-use SDKs for Atmel’s platforms, IoT developers can now reap the benefits of realtime communication, and bypass the security pitfalls and configuration complexities that put IoT deployments at risk,” said Todd Greene, founder & CEO of PubNub. PubNub will team with Atmel at CES 2015 to launch full SDK support for Atmel’s MCU, MPU, and Wireless SoC platforms. Atmel developers now have access to PubNub’s secure Publish/Subscribe messaging with guaranteed ¼ second latencies across PubNub’s 14 global points-of-presence. PubNub delivers secure communication through firewalls, proxy ser...
Apr. 26, 2015 02:00 AM EDT Reads: 3,883
SYS-CON Events announced today that B2Cloud, a provider of enterprise resource planning software, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. B2cloud develops the software you need. They have the ideal tools to help you work with your clients. B2Cloud’s main solutions include AGIS – ERP, CLOHC, AGIS – Invoice, and IZUM
Apr. 26, 2015 02:00 AM EDT Reads: 3,587
SYS-CON Events announced today that Tufin, the market-leading provider of Security Policy Orchestration Solutions, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. As the market leader of Security Policy Orchestration, Tufin automates and accelerates network configuration changes while maintaining security and compliance. Tufin's award-winning Orchestration Suite™ gives IT organizations the power and agility to enforce security policy across complex, multi-vendor enterprise networks. With more than 1...
Apr. 26, 2015 01:45 AM EDT Reads: 3,625
VoxImplant has announced full WebRTC support in the newest versions of its Android SDK and iOS SDK. The updated SDKs, which enable audio and video calls on mobile devices, are now compatible with the WebRTC standard to allow any mobile app to communicate with WebRTC-enabled browsers, including Google Chrome, Mozilla Firefox, Opera, and, when available, Microsoft Spartan. The WebRTC-updated SDKs represent VoxImplant's continued leadership in simplifying the development of real-time communications (RTC) services for app developers. VoxImplant (built by Zingaya, the real-time communication servi...
Apr. 26, 2015 01:45 AM EDT Reads: 2,214
SYS-CON Events announced today that Cloudian, Inc., the leading provider of hybrid cloud storage solutions, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. Cloudian, Inc., is a Foster City, California - based software company specializing in cloud storage software. The main product is Cloudian, an Amazon S3-compliant cloud object storage platform, the bedrock of cloud computing systems, that enables cloud service providers and enterprises to build reliable, affordable and scalable cloud storage solu...
Apr. 26, 2015 01:00 AM EDT Reads: 2,756