Introduction to Model Driven Engineering using Eclipse ...€¦ · Model Driven Development Engine...

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Introduction to Model Driven Engineering using Eclipse

Frameworks

Bruce Trask

Angel Roman

MDE Systems

Model

Driven

Development

Generator

Abstraction

Refinement

Model

Driven

Development

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Agenda• Part I

– What is Model Driven Engineering

• Part II

– MDE, Eclipse in Action, Live Demo

– Questions and Answers

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Warning

The live demo in this tutorial is real and contains

pictures of coding done without model driven

development. Some of the scenes you will see

may not be appropriate for children under the age

of 13

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Summary

Model

Driven

Development

Generator

Abstraction

Refinement

Model

Driven

Development

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Complexity and Change

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Abstraction Gap

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Software Engineering/Computer Science

• Raising the level of Abstraction

• Introducing layers of indirection to solve problems1

1 Dennis DeBruler, Refactoring, Fowler et. al. Addison Wesley 1999

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Components

Frameworks

Middleware

Libraries

APIs

OS

HW

Language and Platform

Change

Complexity

TEAM

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Components

Frameworks

Middleware

Libraries

APIs

OS

HW

Language and Platform – where we are now

Change

Complexity

TEAM

Cla

ssic

Pro

duct

Lin

e

Assets

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Rote vs. Creative Code

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Domain Specific vs. Domain Independent Code

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Duplicate vs. Unique Code

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What’s underneath the problems

• Language technology has not kept pace with platform technology1

• Insufficient linguistic power to tackle

platform and domain complexity

• Lack of tools to deal with increased complexity

1 Douglas C. Schmidt IEEE Computer Magazine February 2006

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Solution

• Leverage recent critical innovations to provide a quantum leap of language technology and tools to overcome the

complexity gap

• Eclipse provides the necessary tools

to make this happen

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Models - participants

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Abstract(ion)• “Thought of as apart from concrete

realities, specific objects, or actual instances

• “Expressing a quality or characteristic apart from any specific object or instance”1

• Derivation: abs– away or away from, tract – to pull or draw1 – relate to domain/product

• “Doing more with less” [Unknown]

1Random House Unabridged Dictionary 2nd Edition, Random House 1993

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Abstraction - Language

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Groups of Abstractions

• Groups of abstractions are used to tackle complex problems

• Abstractions have particular relationships and can be combined in meaningful ways1

• New names, new relationships

• Creation of a vocabulary and grammar = language1

1Software Factories, Greenfield et. al. Wiley 2004

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Abstraction

PackagingPatterns

Tools

Frameworks

Libraries

Pattern

Language

Components

Languages

ABSTRACTION

Traditional

Software Product

Line

Assets

MDD

Artifacts

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Abstraction

Refinement Control

Productivity/Power

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Model Driven Development• Program with Models

• Create Models that can be processed by a machined to produce lower level abstraction artifacts

• Language - Editor - Generator

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Model Driven Development

The Anatomy and Pattern

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Purpose

• Language– define the abstract syntax, or grammar, upon which

the editor, serialization concrete syntax, and in-memory concrete syntax are based.

• Editor– The purpose of the editor is to render, capture and

express design intent

• Generator– Provides automatic ways to get to lower levels of

more executable forms of code. – Provides the actual meaning or semantics to the

higher levels of abstractions.

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Synonyms• Model Driven Development

• Domain Specific Language

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Language

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Language

Vocabulary

+ Grammar

= Language

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Metamodel

Object oriented representation of

the grammar of a language

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Sidebar

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Non Software Example “Domain Independent”

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Non Software Example

“Domain Specific”

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Non Software Example

“Domain Specific”

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Domain Specific Language

• Model concepts found in a specific domain

• Contrast to General Purpose Language –encodes generic abstractions

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Editor

• Textual – Syntax and highlighting, intellisense

• Graphical – Domain Specific Graphics

• Meant for the human

• Nominated to a first class MDD participant

• Constraints at modeling time

• See the design

• Program in terms of domain

elements and relationships

• Declarative

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Generator• Where the rubber meets the road in MDD

• Correct by construction

• Best Practice and Design Pattern replication

• Programming Power

• Maintainability – two sides of the same coin when bug occurs

• Portability of design

• Opens the world up to

new programmers

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Framework

• Abstract architectures

and classes that

provide a partial

solution to a family of

problems.

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DSLs, Models and Frameworks

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Making it actually happen

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Language Workbench1

Domain Model

Serializer

Observer

Reflection

Metamodel

Grammar

Model View

Controller

Command

Graphical

Framework

Chain of

Responsibility

Abstract

Factory

Factory

Method

State

Template

View Visitor Strategy

Serializer

http://www.martinfowler.com/articles/languageWorkbench.html

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Language Workbench

Workbench

Modeling

Framework

Workbench

Generator

Framework

Workbench

Graphical

Editor

Framework

Workbench

Testing

Framework

Workbench

Graphical

Modeling

Framework

Workbench

Debugging

Framework

Workbench

Constraint

Framework

Workbench

Transformation

Framework

Language

Workbench

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Eclipse1

http://www.martinfowler.com/articles/languageWorkbench.html

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Eclipse – Language Workbench

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Tasks

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Workbench

Modeling

Framework

Workbench

Generator

Framework

Workbench

Graphical

Editor

Framework

Workbench

Testing

Framework

Workbench

Graphical

Modeling

Framework

Workbench

Debugging

Framework

Workbench

Constraint

Framework

Workbench

Transformation

Framework

Language

Workbench

Workbench

Textual

Modeling

Framework

Launch

Framework

JET

xPand

M2T

EMF

GEF

ATL

oAW

M2M

M2T

TMF

ELF

ETM

EVF

GMF

EDF

xUnit

TPTP

Frameworks and Projects

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Eclipse as a Model Driven Development

EngineEclipse

Modeling

Framework

Java

Emitter

Templates

Graphical

Editor

Framework

Eclipse

Testing

Framework

Graphical

Modeling

Framework

Eclipse

Debugging

Framework

Eclipse

Constraint

Framework

Eclipse

Transformation

Framework

(ATL)

Domain

Specific

Graphics

Domain

Specific

Models

Domain

Specific

Generators

Domain

Specific

Debuggers

Domain

Specific

Graphics

Mapping

Domain

Specific

Constraints

Domain

Specific

Test

Domain

Specific

Transformations

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Part 2

Model Driven Development, Software Product Lines

and Eclipse

in Action

Live Demo

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