pragmatic agile model driven development using smart use cases

@aahoogendoorn

Sander HoogendoornPrincipal Technology Officer, Global Agile Thought Leader Capgemini

PRAGMATIC AGILE MODEL DRIVEN DEVELOPMENT USING SMART USE CASES

UML AND SMART USE CASES©2001 - 2014 Sander Hoogendoorn. All Rights Reserved@aahoogendoorn

2Sander HoogendoornMe

Dad (3)

Programmer, trainer, coach, architect

Books (3)

Articles (+250)

International conferences (+100)

Capgemini

Principal technology officer

Global design authority agile

Web

www.sanderhoogendoorn.com

www.smartusecase.com

www.speedbird9.com

@aahoogendoorn


4On being a developer...


5Agenda Agile. How does it work?

Agile requirements and modeling?

The backlog. Where does it come from?

User stories. An agile requirements anti-pattern

Smart use cases

Different levels of use cases

Standardizing and stereotypes

Estimating smart use cases

The backlog revisited. Where does it come from?

Automating test design

Generating code from agile requirements

In retrospective


6Agenda. Demo’s Agile. How does it work?

Agile requirements and modeling?

The backlog. Where does it come from?

User stories. An agile requirements anti-pattern

Smart use cases

Different levels of use cases

Standardizing and stereotypes

Estimating smart use cases

The backlog revisited. Where does it come from?

Automating test design

Generating code from agile requirements

In retrospective

@aahoogendoorn

AGILE. HOW DOES IT WORK?


8Agile. Backlog


9Agile. Iterations


10Agile. In iteration


11Agile. Iteration backlog


12Agile. Working in iterations


13Agile. New work items


14Agile. Remaining work items

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WHAT ABOUT AGILE REQUIREMENTS AND MODELING?


16Scrum

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THE BACKLOG.WHERE DOES IT COME FROM?

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AND ON THE SEVENTH DAY KEN CREATED THE BACKLOG


19The automagical backlog


20The automagical backlog


21Agile. Where does the backlog come from?


22Preliminary iterations


23Preliminary iterations


24Smart

Create

project

proposal

Write

project plan

Deliver

working

software

Stabilize

software

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An agile requirements anti-patternUSER STORIES


26User stories


27User stories. The approach


28User stories in complex system landscapes

Often too unstructured

Unsuitable in complex environments

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Part I. From scope to smart use casesSMART USE CASES


30Levels of requirements


31Agile requirements. Approach

D

E

F

SmartUse Cases

A

Project

Scope

D

Use Cases

A

B C

Hierarchical

Processes

B

D

D

Hierarchical

Processes

Chronological

Processes

Cloud Level Kite Level Sea Level Fish Level

C


32Identifying scope at cloud level


33Cloud level


34Kite level


35Modeling smart use cases. Sea and fish level

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Modeling at different levels of granularitySMART USE CASES


37Different levels of use cases

User goal

Sub function


38Different levels of use casesTraditional

use cases

Smart

use cases

Format Textual Visual

Granularity Different Unified

Estimate Hard Easy

Unit of work Lousy Good

Reuse Incidental Normal

Traceability Possible Normal

Testability Poor Good


39Identifying sub-function level use casesGuidelines for identifying sub-function level use cases

Identify re-use

Model one form per use case

Model one use case per functional web part

Isolate unknown functionality

Identify complex functionality

Show reporting

Model complex calculations

Isolate interaction with others

Avoid low level (database) interaction


41Smart use cases. Stereotyped


42Smart use cases. Service orientation


43Identifying reuse

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Thinking in stereotypesSMART USE CASES


45Smart use case stereotypes

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Using www.speedbird9.com

DEMO THE BACKLOG REVISITED.WHERE DOES IT COME FROM?


47Filling the backlog (www.speedbird9.com)


48www.speedbird9.com

@aahoogendoorn

ESTIMATING SMART USE CASES


50Estimating smart use cases


51Estimating smart use cases

4

32

3

84

3

3


52Standardizing estimationEstimating smart use cases

while modeling

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Using Enterprise Architect, Tobago MDA

DEMO GENERATINGYOUR ESTIMATES

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Part II. Implementing smart use casesSMART USE CASES


55The smart use case life cycle

Define work

on use case

Write

test cases

Generate

and build

use case

Run

test cases

Adjust

use case

Describe

use case

Accept

use case


56Analysis & Design. Writing use cases


57Test Design. Test scenarios for smart use cases


58Test Design. Testing smart use cases


59Test Design. Test cases for smart use cases

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Using Sparx’ Enterprise Architect

DEMO AUTOMATING SMART USE CASE TEST DESIGN


62Writing smart use cases. Using Enterprise Architect



Alternative flows

Exception flows

Basic flow



Fields on form

with smart use cases

Smart use case

specific business rules

and validations


65Test scenarios for a smart use case


66Testing a smart use case. Using Enterprise Architect

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CAN WE GENERATE CODE FROM (AGILE) REQUIREMENTS?


68Can we generate code from (agile) requirements?Why generate code?

Higher productivity?

Higher quality?

Get rid of repetitive work?

Prototyping?

Prerequisites to generating code

Standardize, standardize, standardize

A decent and pragmatic model

A simple code generator

A straightforward templating language

Templates!

Clear and present software architecture

Frameworks to back up your software architecture


Presentation

Process

Domain

Data / Services

Outside world

Pages

UserControls

Panels

Use cases

Workflow

Domain objects / Entities

Factories / Repositories

Enums / Value objects / Smart references

Data / Service gateways

Service locators

[Mapping]

Databases

Services / ESB

Exact SAP BizTalk Java


70Using Tobago MDA


71Model driven development - Templates


Forms

Use cases

Domain

objects

Data / Serviceclasses

Databases

Software Architecture

TobagoMDA

Test

scenario’s

FrameworksSpecifications

Existing

Applications

Businessmodels

DomainModel

Smartuse cases

User interface

specification

1. Map

business processes

to smart use cases

2. Set up

domain model3. Refine

software

architecture(s)

4. Generate

code using

a text template engine

5. Finalize

application


73Generated code in ASP.NET


74Generated code Windows 8


75Generating code. Twitter Bootstrap & JSF

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Using Enterprise Architect, Tobago MDA, Visual Studio 2013

DEMO GENERATING CODE FROM SMART USE CASES

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IN RETROSPECTIVE?

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www.sanderhoogendoorn.comwww.smartusecase.comwww.speedbird9.com

[email protected]

@aahoogendoorn

REFERENCES AND QUESTIONS