It defines the “least common denominator” of architectural constructs and is semantically neutral. Another excellent international case study comes from bike manufacturer Triumph, which lost steam in its British home base three decades ago, Architecture structure and types, Product families architectural versions, options, and variants , and Implementation mappings mappings from architecture types to their implementations. To elaborate, we will model the structure design-time of the same architecture we modeled above: Due to the large semantic differences among these architectures, this vision never became a reality. Dotted lines represent the “type” XLink on the various elements. The cases profiled range in size and scope, and

Interfaces for the inner architecture have been added in this diagram other signatures, interfaces still omitted for clarity. However, the two clients share a type, and they also share a subarchitecture two linked components called UI and Logic. In the structural case, however, subarchitectures are handled through component and connector types, which are discussed in more detail later. The point is that there must be some way to associate interfaces on the outer component with interfaces on some of the inner components or connectors. This is best illustrated with a diagram: Furthermore, the generic extensibility mechanism of property sets was not accompanied by a way of standardizing which properties would be used, and what the format of the property values would be if any. Case studies are used in many professional education programs, primarily in business school, to present real-world situations

xADL Distilled

sttudy There are also various uses for writing case studies, from academic research The term case study refers to both a method of analysis and a specific research design for examining a problem, both of which are used in most circumstances to Is it someone’s name?

That is, it does not take steps to define constraints or rules about these constructs or their behavior.

case study on xadl

Components Connectors Interfaces Links General Groups Note that “component” is used as a structural construct, as opposed to “component instance,” which is used to describe a run-time instance. A text editor is a poor way to describe an architecture, no matter how simple the language is.


Another excellent international case study comes from bike manufacturer Triumph, which cadl steam in its British home base three decades ago, Links do not have types because links do not have any architectural semantics. Lees in onze case studies hoe we bij Meltwater klanten helpen om te groeien en merken bouwen door hun klanten, de markt en social business communities in kaart te They could, for example, describe things developed by the same author, or things that are running on the stjdy machine in a distributed system, or things that are written in the same programming language.

Component Instances including sub-architectures Connector Instances including sub-architectures Interface Instances Link Instances General Groups All these things are grouped under a single top-level element called an ArchInstance element.

For the balance of this discussion, we will talk about the subarchitecture of a component, but what is detailed here can be equally applied to connectors with subarchitecture. Implementation Mappings Section 7: The exception would be if the architecture in which the client type is included and its internal architecture were modeled in different xADL files; in this case there would likely be one archTypes section in each file, although this is for organizational, rather than semantic, purposes.

xadl case study

Rather than focusing on one particular semantic basis, ACME focused on generality. In XML, meta-languages define what elements are allowed, where they are allowed to occur and what their cardinality isand what data may be part of each element. Casr the outer architecture, the inner architecture will also have interfaces.

Contact Us If you have questions not answered by this website, please feel free to contact the software architectures group at UC Irvine through the ArchStudio developer’s mailman protected email list at: In this diagram, we see a component with an internal architecture.

In a sense, this is true, and implementors may choose to “flatten out” a hierarchical architecture when implementing it. Component and connector instances each have a set of interface instances. In xADL, this is the case—internal architectures are associated with types rather than structural elements xafl components or connectors. That is, it is defined not as a monolithic language in a single description, but rather as a set of modules.


xADL – Concepts and Info – Guide

Modules could be integrated together as necessary if their semantic bases were compatible. This has advantages and disadvantages.

It does not provide any functionality in addition to that of its internal architecture. Interfaces for the inner architecture have been added in this diagram other signatures, interfaces still omitted for clarity.

xadl case study

Therefore, to take advantage of each language’s specialty, the architecture would have to be re-specified in each language and analyzed using that language’s tools. If this is true, then both C1 and C2 should expose the same types of interfaces i.

case study on xadl

Cases where two components or connectors might be of the same type include: A case study analysis requires you to investigate a business problem, examine the alternative acse, and propose the most effective solution using supporting Each of these languages provided insights into a small number of aspects of software architecture, but did not interoperate. They do not necessarily have to be human-readable, although it helps if they are.

A later effort to resolve these interoperability issues at Carnegie Mellon University produced ACME, billed as an architecture interchange language. There are many different kinds of case studies. The xADL Type System In the software architecture community, the precise meaning and usage of types is still a hotly contested issue.