Welcome!

Java IoT Authors: Liz McMillan, Elizabeth White, Pat Romanski, Yeshim Deniz, Frank Lupo

Related Topics: Machine Learning , Microservices Expo

Machine Learning : Article

Resolving RIA-SOA Conflict

RIA-SOA Collaboration Pattern

The reason for using presentation services versus direct access to the cache is that they can be reused for similar types of interfaces or widgets. That is, they can be reused in different RIAs or parts of RIAs. If presentation services are owned by the RIA, coupling presentation services with business service programmatic interfaces is not recommended. For example, RIA might have independent widgets that refer directly to the business process (the user journey) implemented by the RIA; such business process can obtain needed business functionality from different business services that might have been unknown when the RIA was designed. At the same time, there's the case of a UI being bundled with a SOA business service; we will discuss that in the next section.

SOA Meets RIA
In one of his very interesting publications, John Crupi said:

"What I really want is a user-based composite application, not a middleware-based composite application....Direct connect SOA conveys the ability  to punch through the traditional curtain of portals and heavyweight process engines and directly (at least conceptually...) access SOA services. I don't just mean Web services either. It could be BPEL orchestration
services, coarse-grained POJO services, RSS feeds, or anything else that can be exposed as a ‘service,' albeit at the right level of business granularity."

This is quite the right approach to so-called social or community applications. However, it's difficult and dangerous to allow a user to compose applications in the financial, manufacturing, pharmaceutical, medical, and similar industries without strict control over the composition. I'm talking about composite applications, not about their interfaces.

The danger comes from unknown and uncontrolled resulting RWE - we cannot assume that all end users know and understand all interdependencies between SOA services when they start working on compositions. Plus, the behavior of SOA business services depends on the execution context. A composition represents a new context and service provider must test the service before promising that its behavior hasn't changed in the context. For example, a service execution context contains a policy that may be dependent on the locale - the country where the service is used. Financial laws in the U.S. and U.K. are different and application of related policies can result in different RWEs for the same business service operation and data. We have to remember that a SOA business service is not the same thing as a Web Service's WSDL with a couple of operations named after the business functions.

Saying this, I can only imagine one possible user-driven service composition - the one that is preliminarily tested and represented to the end user as a limited set of combination variants. That is, a meaningful business-driven approach (or RWE compatibility) constrains the presentation capabilities, especially in a rich user interface.

This line of logic lets me look at the RIA-SOA relationship from the service-oriented perspective. As we know, OASIS has started a stream of standards that recognizes a SOA service as a business-oriented consumer-centric serving entity that has its own behavior, which provides certain business functionality and enables consumers to reach a concrete RWE. A SOA business service has programmatic interfaces such as Web services, CORBA, and DCOM. At the same time, some business services can have related user interfaces that include Web-based interfaces. The conciliator mentioned above is a means to attach a UI to the programmatic interfaces of the business service. In this case, the conciliator is owned by the business service.

The richness of a Web-based UI for a business service depends on two factors: the complexity of the business functionality offered by the service and the specifics of the end-user audience. Combining business services in the form of an aggregate service or a business process leads to the composition of related user interfaces. Alternatively, an aggregate service or a business process can be represented as a new service with its own UI that may or may not include the UI from the engaged business services.

Creation of a service's UI composition appears to be a very special task that sometimes gets disconnected from the composition reasons and becomes error-prone. If we want RIA to collaborate with SOA, we have to agree that a rich interface assumes the use of multiple SOA business services as the RIA "application" part. However, SOA business services, in turn, dictate their service-oriented vision of the world - even a rich interface is just the interface to the service. At the same time, the richer the user interface in its capabilities, the easier you can integrate multiple UI from different business services together. In other words, business-driven service compositions can benefit from the user-centric UI integration capabilities of RIA. Figure 3 illustrates this conclusion.

What I said in this section is not really new. RIA is a client/server model but attention has been concentrated on the client side so far. An RIA application may be perfectly service-oriented but we shouldn't forget that the application defines its clients. Otherwise, we'd have to agree that people take flights because pilots exist not because airplanes exist.

Summary
This article discussed a discrepancy between RIA and SOA business services that looks like a mismatch in objective requirements, granularity, and data formats. An RIA-SOA collaboration design pattern was proposed to resolve the problem. The pattern's conciliator module was defined and illustrated in two examples of possible implementations. Finally, the article described SOA business services with bundled user interfaces and their aggregation in the RIA.

More Stories By Michael Poulin

Michael Poulin works as an enterprise-level solution architect in the financial industry in the UK. He is a Sun Certified Architect for Java Technology, certified TOGAF Practitioner, and Licensed ZapThink SOA Architect. Michael specializes in distributed computing, SOA, and application security.

Comments (0)

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.


@ThingsExpo Stories
SYS-CON Events announced today that Yuasa System will exhibit at the Japan External Trade Organization (JETRO) Pavilion 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. Yuasa System is introducing a multi-purpose endurance testing system for flexible displays, OLED devices, flexible substrates, flat cables, and films in smartphones, wearables, automobiles, and healthcare.
SYS-CON Events announced today that Taica will exhibit at the Japan External Trade Organization (JETRO) Pavilion 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. Taica manufacturers Alpha-GEL brand silicone components and materials, which maintain outstanding performance over a wide temperature range -40C to +200C. For more information, visit http://www.taica.co.jp/english/.
SYS-CON Events announced today that SourceForge has been named “Media Sponsor” of 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. SourceForge is the largest, most trusted destination for Open Source Software development, collaboration, discovery and download on the web serving over 32 million viewers, 150 million downloads and over 460,000 active development projects each and every month.
SYS-CON Events announced today that Nihon Micron will exhibit at the Japan External Trade Organization (JETRO) Pavilion 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. Nihon Micron Co., Ltd. strives for technological innovation to establish high-density, high-precision processing technology for providing printed circuit board and metal mount RFID tags used for communication devices. For more inf...
Enterprises have taken advantage of IoT to achieve important revenue and cost advantages. What is less apparent is how incumbent enterprises operating at scale have, following success with IoT, built analytic, operations management and software development capabilities – ranging from autonomous vehicles to manageable robotics installations. They have embraced these capabilities as if they were Silicon Valley startups. As a result, many firms employ new business models that place enormous impor...
SYS-CON Events announced today that MIRAI Inc. will exhibit at the Japan External Trade Organization (JETRO) Pavilion 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. MIRAI Inc. are IT consultants from the public sector whose mission is to solve social issues by technology and innovation and to create a meaningful future for people.
Widespread fragmentation is stalling the growth of the IIoT and making it difficult for partners to work together. The number of software platforms, apps, hardware and connectivity standards is creating paralysis among businesses that are afraid of being locked into a solution. EdgeX Foundry is unifying the community around a common IoT edge framework and an ecosystem of interoperable components.
SYS-CON Events announced today that Dasher Technologies 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. Dasher Technologies, Inc. ® is a premier IT solution provider that delivers expert technical resources along with trusted account executives to architect and deliver complete IT solutions and services to help our clients execute their goals, plans and objectives. Since 1999, we'v...
SYS-CON Events announced today that TidalScale, a leading provider of systems and services, 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. TidalScale has been involved in shaping the computing landscape. They've designed, developed and deployed some of the most important and successful systems and services in the history of the computing industry - internet, Ethernet, operating s...
SYS-CON Events announced today that Massive Networks, that helps your business operate seamlessly with fast, reliable, and secure internet and network solutions, has been named "Exhibitor" of 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. As a premier telecommunications provider, Massive Networks is headquartered out of Louisville, Colorado. With years of experience under their belt, their team of...
SYS-CON Events announced today that IBM has been named “Diamond Sponsor” of SYS-CON's 21st Cloud Expo, which will take place on October 31 through November 2nd 2017 at the Santa Clara Convention Center in Santa Clara, California.
Infoblox delivers Actionable Network Intelligence to enterprise, government, and service provider customers around the world. They are the industry leader in DNS, DHCP, and IP address management, the category known as DDI. We empower thousands of organizations to control and secure their networks from the core-enabling them to increase efficiency and visibility, improve customer service, and meet compliance requirements.
SYS-CON Events announced today that TidalScale 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. TidalScale is the leading provider of Software-Defined Servers that bring flexibility to modern data centers by right-sizing servers on the fly to fit any data set or workload. TidalScale’s award-winning inverse hypervisor technology combines multiple commodity servers (including their ass...
As hybrid cloud becomes the de-facto standard mode of operation for most enterprises, new challenges arise on how to efficiently and economically share data across environments. In his session at 21st Cloud Expo, Dr. Allon Cohen, VP of Product at Elastifile, will explore new techniques and best practices that help enterprise IT benefit from the advantages of hybrid cloud environments by enabling data availability for both legacy enterprise and cloud-native mission critical applications. By rev...
As popularity of the smart home is growing and continues to go mainstream, technological factors play a greater role. The IoT protocol houses the interoperability battery consumption, security, and configuration of a smart home device, and it can be difficult for companies to choose the right kind for their product. For both DIY and professionally installed smart homes, developers need to consider each of these elements for their product to be successful in the market and current smart homes.
Join IBM November 1 at 21st Cloud Expo at the Santa Clara Convention Center in Santa Clara, CA, and learn how IBM Watson can bring cognitive services and AI to intelligent, unmanned systems. Cognitive analysis impacts today’s systems with unparalleled ability that were previously available only to manned, back-end operations. Thanks to cloud processing, IBM Watson can bring cognitive services and AI to intelligent, unmanned systems. Imagine a robot vacuum that becomes your personal assistant tha...
In his Opening Keynote at 21st Cloud Expo, John Considine, General Manager of IBM Cloud Infrastructure, will lead you through the exciting evolution of the cloud. He'll look 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 ...
SYS-CON Events announced today that N3N will exhibit at SYS-CON's @ThingsExpo, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. N3N’s solutions increase the effectiveness of operations and control centers, increase the value of IoT investments, and facilitate real-time operational decision making. N3N enables operations teams with a four dimensional digital “big board” that consolidates real-time live video feeds alongside IoT sensor data a...
In a recent survey, Sumo Logic surveyed 1,500 customers who employ cloud services such as Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform (GCP). According to the survey, a quarter of the respondents have already deployed Docker containers and nearly as many (23 percent) are employing the AWS Lambda serverless computing framework. It’s clear: serverless is here to stay. The adoption does come with some needed changes, within both application development and operations. Tha...
SYS-CON Events announced today that Avere Systems, a leading provider of enterprise storage for the hybrid cloud, 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. Avere delivers a more modern architectural approach to storage that doesn't require the overprovisioning of storage capacity to achieve performance, overspending on expensive storage media for inactive data or the overbui...