|By Shay Shmeltzer||
|April 10, 2008 11:00 AM EDT||
One solution is to enable the specification of methods as part of the flow. This would allow JSF to navigate not just from page to page but also from a page to a method and from a method to a page. Using this approach, the code is extracted from its specific page context and becomes more reusable. JSF page flow diagrams would now be able to convey more accurate information about what's going on in the application. This is helpful both to someone who plans a new flow, as well as to someone who is trying to maintain existing code and understand the flow of the application.
While we're at it, there's another kind of operation that would be useful to the JSF navigation model - a simple switcher. A switcher would let developers externalize navigation decisions from the backing bean of a specific page to the actual flow layer. For example, Figure 1 contains both switcher navigation - determining the method of payment - and a method call to validate a credit card.
Make Flows Reusable
Although you can use several jsf-config files in a single application, essentially breaking down your application into smaller flows, it's still too hard to create a flow that's truly reusable across applications in JSF.
The idea here would be to define standalone flows that can be incorporated into other flows. And to make things truly reusable, these flows should include a standalone memory scope and a transaction scope. This will let developers incorporate the flow into encapsulating flows without interfering with the transaction and memory scope of the encapsulating flow.
To make the use of the flow even more dynamic, I'd like to see the next iteration include parameter passing to and from JSF flows. These parameters could be used not just to pass information but to customize the behavior of the flow in different invocations. Note that in Figure 1 the flow has two return points that will return a value of "approved" or "rejected" to any calling flow that will reuse the payment flow.
Add Declarative UI to Business Components Binding
This layer has been missing from Java EE for too long. Connecting UI components to data components should be done in a declarative way, without much coding. Binding should take care of not only showing the information in the UI, but also processing updates and sending them to the right component on the back-end.
The Java community is becoming aware of the need to simplify binding. There are already three JSRs revolving around the binding issue. JSR 299-Web Beans, based on ideas from the JBoss SEAM framework, aims to define an annotation-driven approach to connecting JSF to an EJB 3.0 back-end. JSR 295-Beans Binding focuses on binding between Java beans and Swing. JSR 227, based on ideas from the Oracle Application Development Framework, aims to be a more generic binding architecture. It offers a metadata approach to binding that applies the same technique to any Java EE stack including JSF, Swing, and other UIs, as well as EJB 3.0, POJO, Web Services, and other back-ends.
While none of these JSRs has been finalized yet and none of them is part of the Java EE stack, their existence points to the need of a better solution for establishing connections between UI and business services.
JSF has been a great step in the right direction for Java developers. A big part of its benefit lies in the fact that it's part of the Java EE standard and as such gets extensive support from all the major players in the market. The popularity of JSF is enhanced further by frameworks that use JSF as their basis and then add functionality to address the gaps they see in the spec right now. Frameworks such as Oracle ADF, JBoss Seam, and Apace Shale take JSF productivity to new heights. With the work on JSF 2.0 (JSR-314) now on its way, I'm hoping to see the ideas implemented in these frameworks standardized for the benefit of the Java community.
The 3rd International Internet of @ThingsExpo, co-located with the 16th International Cloud Expo - to be held June 9-11, 2015, at the Javits Center in New York City, NY - announces that its Call for Papers is now open. The Internet of Things (IoT) is the biggest idea since the creation of the Worldwide Web more than 20 years ago.
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The security devil is always in the details of the attack: the ones you've endured, the ones you prepare yourself to fend off, and the ones that, you fear, will catch you completely unaware and defenseless. The Internet of Things (IoT) is nothing if not an endless proliferation of details. It's the vision of a world in which continuous Internet connectivity and addressability is embedded into a growing range of human artifacts, into the natural world, and even into our smartphones, appliances, and physical persons. In the IoT vision, every new "thing" - sensor, actuator, data source, data con...
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The Internet of Things is tied together with a thin strand that is known as time. Coincidentally, at the core of nearly all data analytics is a timestamp. When working with time series data there are a few core principles that everyone should consider, especially across datasets where time is the common boundary. In his session at Internet of @ThingsExpo, Jim Scott, Director of Enterprise Strategy & Architecture at MapR Technologies, discussed single-value, geo-spatial, and log time series data. By focusing on enterprise applications and the data center, he will use OpenTSDB as an example t...
Nov. 27, 2014 03:00 PM EST Reads: 1,501
An entirely new security model is needed for the Internet of Things, or is it? Can we save some old and tested controls for this new and different environment? In his session at @ThingsExpo, New York's at the Javits Center, Davi Ottenheimer, EMC Senior Director of Trust, reviewed hands-on lessons with IoT devices and reveal a new risk balance you might not expect. Davi Ottenheimer, EMC Senior Director of Trust, has more than nineteen years' experience managing global security operations and assessments, including a decade of leading incident response and digital forensics. He is co-author of t...
Nov. 27, 2014 01:00 PM EST Reads: 1,699
The Internet of Things will greatly expand the opportunities for data collection and new business models driven off of that data. In her session at @ThingsExpo, Esmeralda Swartz, CMO of MetraTech, discussed how for this to be effective you not only need to have infrastructure and operational models capable of utilizing this new phenomenon, but increasingly service providers will need to convince a skeptical public to participate. Get ready to show them the money!
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The Internet of Things will put IT to its ultimate test by creating infinite new opportunities to digitize products and services, generate and analyze new data to improve customer satisfaction, and discover new ways to gain a competitive advantage across nearly every industry. In order to help corporate business units to capitalize on the rapidly evolving IoT opportunities, IT must stand up to a new set of challenges. In his session at @ThingsExpo, Jeff Kaplan, Managing Director of THINKstrategies, will examine why IT must finally fulfill its role in support of its SBUs or face a new round of...
Nov. 27, 2014 10:00 AM EST Reads: 1,255
One of the biggest challenges when developing connected devices is identifying user value and delivering it through successful user experiences. In his session at Internet of @ThingsExpo, Mike Kuniavsky, Principal Scientist, Innovation Services at PARC, described an IoT-specific approach to user experience design that combines approaches from interaction design, industrial design and service design to create experiences that go beyond simple connected gadgets to create lasting, multi-device experiences grounded in people's real needs and desires.
Nov. 27, 2014 08:00 AM EST Reads: 1,270
Enthusiasm for the Internet of Things has reached an all-time high. In 2013 alone, venture capitalists spent more than $1 billion dollars investing in the IoT space. With "smart" appliances and devices, IoT covers wearable smart devices, cloud services to hardware companies. Nest, a Google company, detects temperatures inside homes and automatically adjusts it by tracking its user's habit. These technologies are quickly developing and with it come challenges such as bridging infrastructure gaps, abiding by privacy concerns and making the concept a reality. These challenges can't be addressed w...
Nov. 27, 2014 07:45 AM EST Reads: 1,549
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Nov. 27, 2014 07:00 AM EST Reads: 1,523
Connected devices and the Internet of Things are getting significant momentum in 2014. In his session at Internet of @ThingsExpo, Jim Hunter, Chief Scientist & Technology Evangelist at Greenwave Systems, examined three key elements that together will drive mass adoption of the IoT before the end of 2015. The first element is the recent advent of robust open source protocols (like AllJoyn and WebRTC) that facilitate M2M communication. The second is broad availability of flexible, cost-effective storage designed to handle the massive surge in back-end data in a world where timely analytics is e...
Nov. 27, 2014 06:45 AM EST Reads: 1,355
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Bit6 today issued a challenge to the technology community implementing Web Real Time Communication (WebRTC). To leap beyond WebRTC’s significant limitations and fully leverage its underlying value to accelerate innovation, application developers need to consider the entire communications ecosystem.
Nov. 24, 2014 12:00 PM EST Reads: 1,640
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Nov. 24, 2014 11:00 AM EST Reads: 1,773
Cloud Expo 2014 TV commercials will feature @ThingsExpo, which was launched in June, 2014 at New York City's Javits Center as the largest 'Internet of Things' event in the world.
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