CASE STUDY ON XADL

These tools are described in a later section. They could, for example, describe things developed by the same author, or things that are running on the same machine in a distributed system, or things that are written in the same programming language. The advantage is that the lack of a language-induced constraint here means that different xADL users have the opportunity to redefine the semantics of signatures or ignore them entirely if that makes sense in their target domain. 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 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.

For instance, Rapide focuses strongly on event-based communication between components and simulatable specifications, to the exclusion of other aspects of software architecture. The Instances Core xArch Section 4: The advantage is that the lack of a language-induced constraint here means that different xADL users have the opportunity to redefine the semantics of signatures or ignore them entirely if that makes sense in their target domain. Each language focused on one or two particular features of architecture description and provided rich constructs dealing with that feature. Case studies aim to analyze specific issues within the boundaries of a specific environment Case Studies Power Point 1.

Notionally, in a boxes-and-arrows sense, the relationships between components, connectors, interfaces, and csae can be seen in this diagram example: Coca Cola Integrated Marketing Communications. These tools are described in a later section.

When there are multiple, generic connectors e. This has advantages and disadvantages. Another excellent international case study comes from bike manufacturer Triumph, which lost steam acse its British home base three decades ago, Elements may be nested as necessary, but may not overlap.

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case study on xadl

Read the Unilever case study, powered by the AWS cloud. So, a link may link a particular “in” interface instance on component instance A to a particular “out” interface instance on connector instance B. However, we do not view this as a disadvantage of the language. If this is true, then both C1 and C2 should expose the same types of interfaces i. Stidy structure and types, Product families architectural versions, options, and variantsand Implementation mappings mappings from architecture types to their implementations.

They will investigate what actions caused the Instead, we provide powerful tools with the xADL language to visualize and manipulate xADL documents, with both user and programmatic interfaces.

With appropriately documented semantics, however, type inheritance could easily be added through a new schema. An obvious corrollary of this assumption is that hierarchically structured architectures really are not hierarchically structured—that the outer components merely provide a way of grouping similar internal architectures.

Specializations of this general group construct can be specified in extensions to the construct. The signatures in the component type T prescribe what types of interfaces must exist on a component of type T for that component to properly be “of that type. The xADL constructs available for modeling architectural types are: A text editor is a poor way to describe an architecture, no matter how simple the language is.

xADL Distilled

In the diagram, two components C1 and C2 share a type, T1. In this diagram, the server has an atomic type—that is, the type is not broken down any further.

case study on xadl

For instance, Rapide focuses strongly on event-based communication between components and simulatable specifications, to the exclusion of other aspects of software architecture. Thus, two components or connectors who share a type will also have the same internal architecture if any.

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xADL – Concepts and Info – Guide

This is not inconsistent with the object-oriented view of interfaces. The rationale behind signatures is as follows: Each component or connector instance has a set of interface instances explained below. What tags are allowed and what do they mean?

When this xzdl, the “subarchitecture” element of the component or connector will contain: It is used to describe various aspects of the architecture of a software system. The xADL Type System In the software architecture community, the precise meaning and usage of types is still a hotly contested issue.

xadl case study

Interfaces for the inner architecture have been added in this diagram other signatures, interfaces still omitted for clarity. Each component or connector type has a set of signatures. In xADL, the constructs in the instance schema are used to define running instances of these things; that is, to provide a way to describe these constructs as part of a running software system, oh than a system design.

case study on xadl

The general groups are intended to serve as collections of xADL constructs, without any particular semantics at this stage. In addition to the set of xADL schemas provided by U.

However, when a language sample in XML is needed, xsdl will be provided stripped of namespace information and other extraneous tags for clarity’s sake.