Eclipse is probably best known as a first class Java IDE, but it is so much more than that. In this talk, I will present the different tools that makes up the Eclipse Modeling Project from the simple (EMF) to the very complex (QVT/O). The emphasis will be on the immediately useful techniques with plenty of demonstrations. Presentation made for notesnet.dk 2010-10-26

1. PR0029 - 2010-05-31
Redistribution and other use of this material requires written permission from The RCP Company.
Eclipse Modeling Tools - 2010-10-26
Eclipse is probably best known as a first class Java IDE, but it is so much more than
that.
In this talk, I will present the different tools that makes up the Eclipse Modeling
Project from the simple (EMF) to the very complex (QVT/O). The emphasis will be on
the immediately useful techniques with plenty of demonstrations.

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Agenda
 Eclipse is… what exactly?
 The Eclipse Architecture
 The Eclipse Modeling Project and sub-projects
 EMF, EMFT, GMP, GMT, MDT, M2M, M2T, and TMF
 The Eclipse Modeling Tools
 EMF
 OCL
 CDO
 XText
 GMF
 Jet
 Xpand
 QVT/O

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Eclipse is… what exactly?

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Eclipse – The Sweets

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ECLIPSE – The Mitsubishi Car

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Eclipse – The Java IDE

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Eclipse – The Tools Platform

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Eclipse – The Application Platform

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Eclipse – The Application Platform

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IBM Lotus Notes
Version 8

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The Eclipse Modeling Project
and sub-projects

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Eclipse Modeling Project
 “The Eclipse Modeling Project focuses on the evolution and promotion of model-based
development technologies within the Eclipse community by providing a unified set of
modeling frameworks, tooling, and standards implementations.”

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Relevant Modeling Sub-Projects
 Administrative Projects
 EMF, EMFT, GMP, GMT, MDT, M2M, M2T, and TMF
 Some Relevant Technical Projects
 EMF – Eclipse Modeling Framework – is the base technology used to represent
models
 OCL – Object Constraint Language – allows you to specify advanced constraints
and invariants
 CDO – Connected Data Objects – is a distributed shared model framework for EMF
models and meta models
 XText – is a text based editor framework for EMF models based on EBNF grammars
 GMF – Graphical Modeling Framwork – is a graphics based editor framework for
EMF models
 JET – Java Emitter Templates – is a JSP like language for generating Java code from
a model
 Xpand – is a high-level template language used to translate models to text
 QVT/O – Operational QVT (Query/View/Transformation) – is a very, very high-level
language for model to model transformations
 Teneo – is a database persistency solution for EMF using Hibernate or EclipseLink

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EMF
 Eclipse Modeling Framework – is the base technology used to represent models
 Logical models based on ER diagrams

15. L0087 - 2010-09-19
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Logical Model for NBS – Noware Bike Shop
~
Item
HandlebarsFrame
Bike
0..*
Wheel Gear Saddle

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Logical Model for EMF
~ Named Element
Model Element
0..1
Typed ElementClassifier
Structural Feature
Attribute
Reference
Class
Data Type
0..*
0..*
0..*
type
opposite
superTypes
0..*

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OCL
 Object Constraint Language – allows you to specify advanced constraints and
invariants
 E.g.
 Item price is positive:

Context Item: inv self.price > 0
 It has exactly one Saddle:

Context Bike: inv self.items->select(i : Item | i.oclIsKindOf(Saddle))->size() == 1
 Can be tested using the interactive console
 Can be embedded directly in Ecore

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CDO
 Connected Data Objects – is a distributed shared model framework for EMF models
and meta models

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XText
 XText – is a text based editor framework for EMF models based on EBNF grammars
events
doorClosed D1CL
drawOpened D2OP
…
end
resetEvents
doorOpened
end
commands
unlockPanel PNUL
lockPanel PNLK
…
end
state idle
actions {unlockDoor lockPanel}
doorClosed => active
end
state active
drawOpened => waitingForLight
lightOn => waitingForDraw
end
…
grammar my.pack.SecretCompartments
with org.eclipse.xtext.common.Terminals
generate secretcompartment "http://www.eclipse.org/secretcompartment"
Statemachine :
'events'
(events+=Event)+
'end'
('resetEvents'
(resetEvents+=[Event])+
'end')?
'commands'
(commands+=Command)+
'end'
(states+=State)+;
Event : name=ID code=ID;
Command : name=ID code=ID;
State :
'state' name=ID
('actions' '{' (actions+=[Command])+ '}')?
(transitions+=Transition)*
'end';
Transition :
event=[Event] '=>' state=[State];

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GMF
 Graphical Modeling Framwork – is a graphics based editor framework for EMF models
 In itself also a number of models that describe how objects and graphical items and
tools maps

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JET
 Java Emitter Templates – is a JSP like language for generating Java code from a model
public <%if (isEnum) {%>enum<%} else {%>final class<%}%> <%=genEnum.getName()%> <%if (isEnum) {%>implements<%}
else {%>extends<%}%> <%=genModel.isSuppressEMFMetaData() && !genModel.isSuppressInterfaces() ? "Internal" +
genEnum.getName() : genModel.getImportedName(isEnum ? "org.eclipse.emf.common.util.Enumerator" :
"org.eclipse.emf.common.util.AbstractEnumerator")%>
{
<%if (isEnum) {%>
<%if (genEnum.getGenEnumLiterals().isEmpty()) {%>
;
<%}else {%>
<%for (Iterator<GenEnumLiteral> l = genEnum.getGenEnumLiterals().iterator(); l.hasNext(); )
{ GenEnumLiteral genEnumLiteral = l.next(); %>
/**
* The '<em><b><%=genEnumLiteral.getFormattedName()%></b></em>' literal object.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @see #<%=genEnumLiteral.getEnumLiteralValueConstantName()%>
* @generated
* @ordered
*/
<%=genEnumLiteral.getEnumLiteralInstanceConstantName()%>(<%=genEnumLiteral.getValue()%>, "<
%=genEnumLiteral.getName()%>", <%=Literals.toStringLiteral(genEnumLiteral.getLiteral(), genModel)%>)<%if
(l.hasNext()) {%>,<%} else {%>;<%}%><%=genModel.getNonNLS()%><%=genModel.getNonNLS(2)%>
<%}%>
<%}%>
<%}%>

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Xpand
 Xpand – is a high-level template language used to translate models to text
 Expandable and type-safe
 Has an aspect-based extension system to allow users to extend current templates
«DEFINE Root FOR data::DataModel»
«EXPAND Entity FOREACH entity»
«ENDDEFINE»
«DEFINE Entity FOR data::Entity»
«FILE name + ".java"»
public class «name» {
«FOREACH attribute AS a»
// bad practice
private «a.type» «a.name»;
«ENDFOREACH»
}
«ENDFILE»
«ENDDEFINE»

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Eclipse.dk – The Danish Eclipse Society
 Eclipse.dk was created in Marts 2007 as a meeting place for everyone interested in the
Eclipse (www.eclipse.org) platform.
 The purpose of Eclipse.dk is as follows:
 To promote the knowledge of Eclipse in Denmark.
 To create networks amongst danish Eclipse-users and developers.
 To build knowledge on Eclipse in Denmark, especially

In danish institutes of higher education.

Between danish companies developing applications based on Eclipse.
 Create and maintain a web site on Eclipse for danish users – eclipse.dk.
 Strengthen the relations between danish and international Eclipse-users and
organizations.
 The eclipse.dk society has members representing not only vendors of Eclipse-based
products and services, but also users of the platform and representatives from
institutions of higher education.

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Q & A

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About Me
 Tonny Madsen, Founder and Owner of The RCP Company
 20 years of experience in system development in major companies
 9 years experience as the Systems Architect of an 20+ MLoC project
 8 years of experience with Eclipse and Eclipse RCP
 Solutions Member of the Eclipse Foundation
 Chairman of Eclipse.dk
 Extern Lecturer at IT-University on Model Driven Development and
Domain Specific Languages
 Regular speaker at EclipseCon, Eclipse Summit, etc

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If You Want to Know More about Eclipse
 The Foundation:
 http://eclipse.org
 The Danish User Group:
 http://eclipse.dk
 The training:
 http://www.eclipse.org/community/training/classes.php
 Resources on Eclipse:
 http://www.eclipse.org/resources/
 Consolidated Blog:
 http://planeteclipse.org/

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If You Want to Know More about Modeling
 The Project:
 http://eclipse.org/modeling/
 Downloading Eclipse for Modeling:
 http://www.eclipse.org/downloads/packages/eclipse-modeling-tools-includes-
incubating-components/heliossr1
 The training:
 Not yet, but coming after the Summer
 ITU have a 14 weeks class on “Model Driven Development” -
https://mit.itu.dk/ucs/cb_www/course.sml?
course_id=913525&semester_id=912846
 Tutorials on modeling