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Brent Carlson

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I know what you're probably thinking as you look at the title of this article: "software reuse - been there, done that, and it doesn't work...." And it's true that many a software architect or project leader on a WebLogic project has broken his or her pick on the slag heap of reuse efforts and that the legacy of monolithic CASE tool suites has left a bad taste in many developers' mouths when it comes to developing reusable software. So, what has changed to make software reuse feasible today? Three key factors make software reuse initiatives worth considering or reconsidering at this juncture: Mature, component-based development environments Web services and service-oriented architectures Software engineering processes and tools oriented towards reuse I'll be discussing why each of these factors makes a difference towards the goal of effective software reuse, and why,... (more)

Discovering and Documenting Business Application Patterns

You're probably saying to yourself, "Oh, no! Not another patterns article!" Technically, that's what this is. However, instead of simply showing you a finished pattern, we're going to look at pattern discovery. And, while what we'll talk about can help you capture fundamental patterns (that is, if there are any fundamental patterns left to be defined) we're going to focus on the capture of more workaday patterns. These are patterns that may be useful to only you and your team and might never be made into formal patterns or even shared outside of your group. In fact a pattern puri... (more)

Discovering and Documenting Business Application Patterns

This month we'll look at pattern discovery in more detail by continuing to examine a business application pattern we discovered and documented. Our focus isn't on creating formal patterns, but on capturing, refining, and sharing the knowledge gained during development. We'll discuss the steps we went through as we discovered and captured our pattern. As we progress through the steps, we'll show you not only what we learned as we captured this pattern, but also things we learned as we captured other patterns. In Part 1 we identified the problem - managing configurable balance inf... (more)

Discovering and Documenting Business Application Patterns

Over the past two months, we've looked at the process of extracting a business application pattern from a series of business requirements. You've seen this pattern take shape, from its original form as a design meeting the specific needs of a particular business application (configurable product balance information) through an initial abstraction that was modified by other business requirements to reach its final form. In this article, the last of a three-part series, we'll look at applying the key pattern and cached balances pattern (with others) to the construction of applicati... (more)

SOA Governance Best Practices – Architectural, Organizational, and SDLC Implications

The fact that you're reading this article means that you are probably planning a service-oriented architecture (SOA) initiative and recognize that some level of governance is required in order to be successful. If you are like most people in this position, you are also somewhat confused as to the meaning of SOA governance. Governance is the current buzzword, and combining governance with SOA creates a phrase that every independent software vendor (ISV) wants a piece of. How do you sort out what is marketing hype from what is truly valuable and relevant to your organization's SOA ... (more)