Weblogic Authors: Yeshim Deniz, Elizabeth White, Michael Meiner, Michael Bushong, Avi Rosenthal

Related Topics: Weblogic

Weblogic: Article

Services-Oriented Architecture and Services-Oriented Development of Applications

A strategy for transition

Services-oriented development of applications (SODA) is an important development model for enabling organizations to reorient business processes in the transition to a service-oriented architecture (SOA). This article describes one such approach.

Services-Oriented Development of Applications (SODA)
Gartner refers to SOA and SODA as foundational elements of future computing. SODA is a new style of developing software, designed to work specifically within the SOA paradigm. SOA represents a collection of loosely coupled, coarse-grained, heterogeneous components that can be easily snapped together using Web services. The result is enhanced developer productivity, code reuse, and business agility. The SOA Blueprints (www.middlewareresearch.com/soa-blueprints/), an industry-derived set of best practices and associated reference implementation, is an excellent resource for those looking to move to an SOA.

SODA is centered on the creation and assembly of services and service contracts first, deferring the design and implementation of the objects and components that realize the services until after the coarse-grained service contracts have been ironed out. SODA developers focus more on the process flow within and between applications, and less on the code that creates the underlying system. For a brief and to the point description of SODA, see www.serviceoriented.org/soda.html.

Pain Points
The issues described below are certainly not all-encompassing, but are meant to exemplify the issues that often impact a development process (particularly when undertaken by larger enterprises with multiple development teams), and which might be alleviated by transitioning to a SODA-based development approach.

Dependencies / Bottlenecks
Bottlenecks related to the ordering of dependencies are usually the biggest issue. Developers are often waiting for a dependent item to be designed and/or implemented before they can continue with their tasking. One of the issues is the division of labor in a multi-team environment. A standard division of labor often employed in this environment consists of having different teams working on the same vertical slice of functionality in different tiers, causing these dependency-related bottlenecks to spring up.

Management and mitigation of dependency-related issues is crucial to ensuring that developers can continue to be productive throughout development iterations; however, it isn't possible to "manage" a dependency issue away if many of the pieces are being developed in parallel (which is often the case with a fixed deadline).

Creation of the data model for each of an organization's releases (iterations) oftentimes begins roughly in parallel with the development of the software that interacts with it and not much earlier, which is not ideal but not always possible to avoid. Similarly, the domain model for a release may not be completed prior to a development iteration that will be using it. Proper planning in building out the data and domain models first is critical to avoiding these issues but if the project is already well underway, it is what it is ("next time, we'll do it right"). These issues result in a bottleneck for the business services, object/relational persistence mapping, and enterprise application integration (EAI)/business-to-business (B2B) developers, who require both data and domain models to be completed before much of their work can commence. The dependency problems can quickly cascade.

Division of Labor
Development teams are often divided horizontally by tier (especially those that are geographically dispersed). One team may be working on the presentation tier and the other on the business tier. This division often exists out of necessity due to the fact that off-site teams may not have access to the back-end systems with which the business tier needs to interact. Development of the presentation-tier functionality does not require access to these systems (at least during the design and initial implementation phases of the iteration). This division of labor has its problems, though, in that the development of discrete pieces of functionality (use cases) is being performed by separate (again, often geographically separated) teams. These teams often communicate through interfaces to business services and the data transfer objects (DTOs) (http://java.sun.com/blueprints/corej2eepatterns/ Patterns/TransferObject.html) exposed through them - a standard Java 2 Enterprise Edition (J2EE) best practice. The DTO structure and content often changes during a development iteration, as both the presentation and business services developers dig deeper into their designs and subsequent implementations. In addition, the structure/content of the DTOs is (mostly) driven by the structure of the domain model, and as it evolves, so do they. These issues could be lessened somewhat if the same team were working on an end-to-end slice of functionality (one team would be in control of the structure/content of the domain model, DTOs, business service interfaces, and the associated presentation). The key roadblock to going down a road with this approach is the capability to consistently simulate interfaces with the back-end systems, so that an off-site team can be given a full vertical slice. When teams are collocated, such back-end systems often have usage restrictions, especially when the back-end system is connected to and/or owned by another project, department, or business.

How Can a SODA Approach Help?
All resources are considered to be as services with SODA (from UI components on the front end to interaction with an external business partner on the back end). The primary development activity for the vast majority of developers here is the orchestration of those services. A small number of J2EE and integration gurus are responsible for the development of the implementation and/or extension of services in the case where the chosen SODA tools do not provide them off-the-shelf.

More Stories By Steve Buzzard

Steve Buzzard is currently working as a J2EE principal architect with Anexinet Corporation (www.anexinet.com), a leading systems integration firm headquartered in Philadelphia, with offices in New York and Washington D.C. Steve has over 19 years of experience in professional software development and has been working almost exclusively with the WebLogic Technology Stack since late 1998.

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
Large industrial manufacturing organizations are adopting the agile principles of cloud software companies. The industrial manufacturing development process has not scaled over time. Now that design CAD teams are geographically distributed, centralizing their work is key. With large multi-gigabyte projects, outdated tools have stifled industrial team agility, time-to-market milestones, and impacted P&L stakeholders.
"Cloud Academy is an enterprise training platform for the cloud, specifically public clouds. We offer guided learning experiences on AWS, Azure, Google Cloud and all the surrounding methodologies and technologies that you need to know and your teams need to know in order to leverage the full benefits of the cloud," explained Alex Brower, VP of Marketing at Cloud Academy, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clar...
Gemini is Yahoo’s native and search advertising platform. To ensure the quality of a complex distributed system that spans multiple products and components and across various desktop websites and mobile app and web experiences – both Yahoo owned and operated and third-party syndication (supply), with complex interaction with more than a billion users and numerous advertisers globally (demand) – it becomes imperative to automate a set of end-to-end tests 24x7 to detect bugs and regression. In th...
"Akvelon is a software development company and we also provide consultancy services to folks who are looking to scale or accelerate their engineering roadmaps," explained Jeremiah Mothersell, Marketing Manager at Akvelon, 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.
"MobiDev is a software development company and we do complex, custom software development for everybody from entrepreneurs to large enterprises," explained Alan Winters, U.S. Head of Business Development at MobiDev, 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.
SYS-CON Events announced today that CrowdReviews.com has been named “Media Sponsor” of SYS-CON's 22nd International Cloud Expo, which will take place on June 5–7, 2018, at the Javits Center in New York City, NY. CrowdReviews.com is a transparent online platform for determining which products and services are the best based on the opinion of the crowd. The crowd consists of Internet users that have experienced products and services first-hand and have an interest in letting other potential buye...
"IBM is really all in on blockchain. We take a look at sort of the history of blockchain ledger technologies. It started out with bitcoin, Ethereum, and IBM evaluated these particular blockchain technologies and found they were anonymous and permissionless and that many companies were looking for permissioned blockchain," stated René Bostic, Technical VP of the IBM Cloud Unit in North America, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Conventi...
SYS-CON Events announced today that Telecom Reseller has been named “Media Sponsor” of SYS-CON's 22nd International Cloud Expo, which will take place on June 5-7, 2018, at the Javits Center in New York, NY. Telecom Reseller reports on Unified Communications, UCaaS, BPaaS for enterprise and SMBs. They report extensively on both customer premises based solutions such as IP-PBX as well as cloud based and hosted platforms.
"Space Monkey by Vivent Smart Home is a product that is a distributed cloud-based edge storage network. Vivent Smart Home, our parent company, is a smart home provider that places a lot of hard drives across homes in North America," explained JT Olds, Director of Engineering, and Brandon Crowfeather, Product Manager, at Vivint Smart Home, in this SYS-CON.tv interview at @ThingsExpo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
Coca-Cola’s Google powered digital signage system lays the groundwork for a more valuable connection between Coke and its customers. Digital signs pair software with high-resolution displays so that a message can be changed instantly based on what the operator wants to communicate or sell. In their Day 3 Keynote at 21st Cloud Expo, Greg Chambers, Global Group Director, Digital Innovation, Coca-Cola, and Vidya Nagarajan, a Senior Product Manager at Google, discussed how from store operations and ...
In his session at 21st Cloud Expo, Carl J. Levine, Senior Technical Evangelist for NS1, will objectively discuss how DNS is used to solve Digital Transformation challenges in large SaaS applications, CDNs, AdTech platforms, and other demanding use cases. Carl J. Levine is the Senior Technical Evangelist for NS1. A veteran of the Internet Infrastructure space, he has over a decade of experience with startups, networking protocols and Internet infrastructure, combined with the unique ability to it...
It is of utmost importance for the future success of WebRTC to ensure that interoperability is operational between web browsers and any WebRTC-compliant client. To be guaranteed as operational and effective, interoperability must be tested extensively by establishing WebRTC data and media connections between different web browsers running on different devices and operating systems. In his session at WebRTC Summit at @ThingsExpo, Dr. Alex Gouaillard, CEO and Founder of CoSMo Software, presented ...
"There's plenty of bandwidth out there but it's never in the right place. So what Cedexis does is uses data to work out the best pathways to get data from the origin to the person who wants to get it," explained Simon Jones, Evangelist and Head of Marketing at Cedexis, 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.
WebRTC is great technology to build your own communication tools. It will be even more exciting experience it with advanced devices, such as a 360 Camera, 360 microphone, and a depth sensor camera. In his session at @ThingsExpo, Masashi Ganeko, a manager at INFOCOM Corporation, introduced two experimental projects from his team and what they learned from them. "Shotoku Tamago" uses the robot audition software HARK to track speakers in 360 video of a remote party. "Virtual Teleport" uses a multip...
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...
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.
Leading companies, from the Global Fortune 500 to the smallest companies, are adopting hybrid cloud as the path to business advantage. Hybrid cloud depends on cloud services and on-premises infrastructure working in unison. Successful implementations require new levels of data mobility, enabled by an automated and seamless flow across on-premises and cloud resources. In his general session at 21st Cloud Expo, Greg Tevis, an IBM Storage Software Technical Strategist and Customer Solution Architec...
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 ...
An increasing number of companies are creating products that combine data with analytical capabilities. Running interactive queries on Big Data requires complex architectures to store and query data effectively, typically involving data streams, an choosing efficient file format/database and multiple independent systems that are tied together through custom-engineered pipelines. In his session at @BigDataExpo at @ThingsExpo, Tomer Levi, a senior software engineer at Intel’s Advanced Analytics gr...
When talking IoT we often focus on the devices, the sensors, the hardware itself. The new smart appliances, the new smart or self-driving cars (which are amalgamations of many ‘things’). When we are looking at the world of IoT, we should take a step back, look at the big picture. What value are these devices providing? IoT is not about the devices, it’s about the data consumed and generated. The devices are tools, mechanisms, conduits. In his session at Internet of Things at Cloud Expo | DXWor...