 |
A stereotype denotes a
variation on an existing modeling element with the same
form but with a modified intent. Stereotypes are
effectively used to extend the
UML in a consistent
manner. |
|
Figure 1.
Indicating stereotypes.
Figure 2. A
frame encompassing a sequence diagram.
- Name Stereotypes in
<<user interface>> and <<UI>> format.
- List Stereotypes
Last. In Figure 1
the second version of the Customer class lists the
stereotypes for its operations after the operation
signature, not before it.
- Don’t
Indicate Assumed Stereotypes. In Figure 1
I dropped the <<business domain>> stereotype because it
is common practice to assume that unless marked
otherwise that a class is a business domain one.
-
Prefer Naming Conventions over Stereotypes. For example, instead of applying the stereotype
<<getter>> on an operation, you could simply start all
getters with the text get. This simplifies your
diagrams and increases the consistency of your source
code. Normally would have ditched <<getter>> in
Figure 1 but I left it there for
the discussion of
Tagged Values
Follow Stereotypes.
- Tagged
Values Follow Stereotypes.
- Center
Classifier Stereotypes. The stereotype for a classifier,
such as the Customer class in Figure
1 should be centered (as should the name itself).
- Introduce New Stereotypes Sparingly.
- Apply
Stereotypes Consistently.
- Apply
Visual Stereotypes Sparingly.
Figure 2
depicts a
sequence diagram which includes the standard
robustness diagram symbols which are commonly
applied to
UML communication diagrams.
|
|
|
The Elements of UML 2.0 Style describes a collection
of standards, conventions, and
guidelines
for creating effective
UML diagrams. They are based on sound, proven
software engineering principles that lead to diagrams
that are easier to understand and work with. These
conventions exist as a collection of simple, concise
guidelines that if applied consistently, represent an
important first step in increasing your productivity as
a modeler. This book is oriented towards
intermediate to advanced UML modelers, although there
are numerous examples throughout the book it would not
be a good way to learn the UML (instead, consider
The Object Primer). The book is a brief 188
pages long and is conveniently pocket-sized so it's easy
to carry around. |
 |
|
The Object Primer 3rd Edition: Agile Model Driven
Development with UML 2 is an
important reference book for agile modelers,
describing how to develop 35
types of agile
models including all 13
UML 2 diagrams.
Furthermore, this book describes the techniques
of the
Full Lifecycle Object Oriented Testing
(FLOOT) methodology to give you the fundamental
testing skills which you require to succeed at
agile software development. The book also
shows how to move from your agile models to
source code (Java examples are provided) as well
as how to succeed at implementation techniques
such as
refactoring and
test-driven development
(TDD). The Object Primer also includes a
chapter overviewing the critical database
development techniques (database refactoring,
object/relational mapping,
legacy analysis, and
database access coding) from my award-winning
Agile Database Techniques
book. |
 |
|
Agile Modeling: Effective Practices for Extreme
Programming and the Unified Process is the seminal
book describing how agile software developers approach
modeling and
documentation. It describes principles and
practices which you can tailor into your existing
software process, such as
XP, the
Rational Unified Process (RUP), or the
Agile Unified Process (AUP), to streamline your
modeling and documentation efforts. Modeling and
documentation are important aspects of any software
project, including agile projects, and this book
describes in detail how to
elicit requirements,
architect, and then
design your system in an agile manner. |
|
|
We actively work with clients around the world to
improve their information technology (IT) practices,
typically in the role of mentor/coach, team lead, or trainer. A full
description of what we do, and how to contact us, can be
found at Scott W.
Ambler + Associates.
|
