1. Model Driven Software Development
with Eclipse
Sven Efftinge
Sebastian Zarnekow

2. MDA
Model Driven Architecture

3. MDSD IS NOT MDA!

4. TOP5
DON’TS
IN CODE GENERATION

5. UML for
CODE GENERATION?

6. CODE GENERATION
USED TO CONSTRAIN
DEVELOPERS

7. SLOW GENERATION /
BAD INTEGRATION

8. OVER-REUSE

9. OVER-ENGINEERING

11. • Domain Specific Language Development Framework
• Based on:
• Eclipse
• Eclipse Modeling Framework (EMF)
• Antlr parser generator

12. • Domain mming Language Development Framework
Progra Specific
• Based on:
• Eclipse
• Eclipse Modeling Framework (EMF)
• Antlr parser generator

13. • Domain mming Language Development Framework
Progra Specific
• Based on:

14. • Domain mming Language Development Framework
Progra Specific
• Based on:
• Eclipse

15. • Domain mming Language Development Framework
Progra Specific
• Based on:
• Eclipse
• Eclipse Modeling Framework (EMF)

16. • Domain mming Language Development Framework
Progra Specific
• Based on:
• Eclipse
• Eclipse Modeling Framework (EMF)
• Antlr parser generator

18. • History

19. • History
• 2005 : Prototype @ openArchitectureWare

20. • History
• 2005 : Prototype @ openArchitectureWare
• 2007 : Xtext goes Eclipse TMF

21. • History
• 2005 : Prototype @ openArchitectureWare
• 2007 : Xtext goes Eclipse TMF
• 01/2008 : itemis forms development team

22. • History
• 2005 : Prototype @ openArchitectureWare
• 2007 : Xtext goes Eclipse TMF
• 01/2008 : itemis forms development team
• 06/2009 : TMF Xtext 0.7.0 @ Eclipse Galileo

23. • History
• 2005 : Prototype @ openArchitectureWare
• 2007 : Xtext goes Eclipse TMF
• 01/2008 : itemis forms development team
• 06/2009 : TMF Xtext 0.7.0 @ Eclipse Galileo
• 09/2009 : Galileo SR1 with Xtext 0.7.2

24. in numbers

25. 9 active committers

26. ~1.000.000
lines of code

27. ~2.000 unit tests

28. ~400 newsgroup
messages per month

29. ~200 Followers for
@Xtext

30. -6.750
Hudson build points

31. 182 project years

32. 182 project years
says Ohloh.net

33. Some
users

34. Deutsche Börse
Systems AG

35. Fraunhofer IWES

36. BMW Car IT

37. APG Affichage

38. @SuppressWarnings("serial")
@Entity
Entity
@Table(name = "BUCHUNGSKREISE_F")
BUCHUNGSKREISE_F
public class BuchungskreiseF extends AbstractEntity implements Serializable {
@SuppressWarnings("unused")
@Id
Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "bkrIdSeq")
@SequenceGenerator(name = "bkrIdSeq", sequenceName = "BKR_SEQ", allocationSize = 1)
BKR_SEQ
@Column(name = "BKR_ID", nullable = false
BKR_ID false)
private Long bkrId
bkrId;
public Long getBkrId() {
return bkrId;
}
public void setBkrId(final Long bkrId) {
this.bkrId = bkrId;
}
@Column(name = "KONTO_NR", nullable = false length = 45
KONTO_NR false, 45)
private String kontoNr;
kontoNr
public String getKontoNr() {
return kontoNr;
}
public void setKontoNr(final String kontoNr) {
String oldValue = this.kontoNr;
this.kontoNr = kontoNr;
firePropertyChangeEvent("kontoNr", oldValue, this.kontoNr);
}

39. @SuppressWarnings("serial")
@Entity
Entity
@Table(name = "BUCHUNGSKREISE_F")
BUCHUNGSKREISE_F
public class BuchungskreiseF extends AbstractEntity implements Serializable {
@SuppressWarnings("unused")
@Id
Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "bkrIdSeq")
@SequenceGenerator(name = "bkrIdSeq", sequenceName = "BKR_SEQ", allocationSize = 1)
BKR_SEQ
@Column(name = "BKR_ID", nullable = false
BKR_ID false)
private Long bkrId
bkrId;
public Long getBkrId() {
return bkrId;
}
public void setBkrId(final Long bkrId) {
this.bkrId = bkrId;
}
@Column(name = "KONTO_NR", nullable = false length = 45
KONTO_NR false, 45)
private String kontoNr;
kontoNr
public String getKontoNr() {
return kontoNr;
}
public void setKontoNr(final String kontoNr) {
String oldValue = this.kontoNr;
this.kontoNr = kontoNr;
firePropertyChangeEvent("kontoNr", oldValue, this.kontoNr);
}

40. External DSL with Xtext
entity BuchungskreiseF
(id=bkrId sequenceName=BKR_SEQ) {
String kontoNr (notNull, length=45)
Long rgNrBkrIdentifikator (notNull, length=1)
String referenzcodeKontoNr (notNull, length=45)
}

41. External DSL with Xtext
entity BuchungskreiseF
(id=bkrId sequenceName=BKR_SEQ) {
String kontoNr
Long rgNrBkrIdentifikator
String referenzcodeKontoNr
}

42. External DSL with Xtext
BUCHUNGSKREISE_F
entity BuchungskreiseF
(id=bkrId sequenceName=BKR_SEQ) {
String kontoNr
RG_NR_BKR_IDENTIFIKATOR
Long rgNrBkrIdentifikator
String referenzcodeKontoNr
}

43. entity BuchungskreiseF
(id=bkrId sequenceName=BKR_SEQ)
{
}

44. entity BuchungskreiseF
(id=bkrId sequenceName=BKR_SEQ)
{
}
TABLE BUCHUNGSKREISE_F
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
Database Schema

45. entity BuchungskreiseF
(id=bkrId sequenceName=BKR_SEQ)
{
}
TABLESimilar to
BUCHUNGSKREISE_F
Ruby On Rails
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
Database Schema

46. Getting Started with Xtext

69. Working with

70. Codegeneration
Editor

71. Codegeneration
Editor
AST

72. Editor
AST
TeX Xpa
T ma p
TeXeXpa p n nd
m l
p
Te m a p n ad
m pln lad te
pl ad te
at te
e
Generator
Codegeneration

73. Editor
AST
TeX Xpa
T ma p
TeXeXpa p n nd
m l
p
Te m a p n ad
m pln lad te
pl ad te
at te
e
Generator
Codegeneration
E
Ex xe
Ex A c
r
Ex Ae etcu uta
Aecrtcuifata bl
A rti uifata ctbl e
rt fata ctb e
ifa c b le
ct t le

74. Accessing models from Java

75. Accessing models from Java
// create a URI that points to the model file
URI uri = URI.createURI("foo.mydsl");

76. Accessing models from Java
// create a URI that points to the model file
URI uri = URI.createURI("foo.mydsl");
// create a resource
Resource resource = new ResourceSetImpl().getResource(uri,true);

77. Accessing models from Java
// create a URI that points to the model file
URI uri = URI.createURI("foo.mydsl");
// create a resource
Resource resource = new ResourceSetImpl().getResource(uri,true);
// get root model element from resource
Model model = (Model) resource.getContents().get(0);

78. Accessing models from Java
// create a URI that points to the model file
URI uri = URI.createURI("foo.mydsl");
// create a resource
Resource resource = new ResourceSetImpl().getResource(uri,true);
// get root model element from resource
Model model = (Model) resource.getContents().get(0);
// print name of first element
System.out.println(model.getElements().get(0).getName());

79. Accessing models from Java
// create a URI that points to the model file
URI uri = URI.createURI("foo.mydsl");
// create a resource
Resource resource = new ResourceSetImpl().getResource(uri,true);
// get root model element from resource
Model model = (Model) resource.getContents().get(0);
// print name of first element
System.out.println(model.getElements().get(0).getName());
// change name of first element to "Bar"
model.getElements().get(0).setName("Bar");

80. Accessing models from Java
// create a URI that points to the model file
URI uri = URI.createURI("foo.mydsl");
// create a resource
Resource resource = new ResourceSetImpl().getResource(uri,true);
// get root model element from resource
Model model = (Model) resource.getContents().get(0);
// print name of first element
System.out.println(model.getElements().get(0).getName());
// change name of first element to "Bar"
model.getElements().get(0).setName("Bar");
// save resource
resource.save(null);

81. Integration with EMF

82. Integration with EMF
eclipse
Any EMF-based modeling
Code Generator GMF Editor P R O J E C T
Component

83. Integration with EMF
eclipse
Any EMF-based modeling
Code Generator GMF Editor P R O J E C T
Component
<<abstract>>
XMIResource
Resource

84. Integration with EMF
eclipse
Any EMF-based modeling
Code Generator GMF Editor P R O J E C T
Component
<<abstract>>
XMIResource
Resource

85. Integration with EMF
eclipse
Any EMF-based modeling
Code Generator GMF Editor P R O J E C T
Component
<<abstract>> XMI
XMIResource
Resource

86. Integration with EMF
eclipse
Any EMF-based modeling
Code Generator GMF Editor P R O J E C T
Component
<<abstract>> XMI
XMIResource
Resource

87. Integration with EMF
eclipse
Any EMF-based modeling
Code Generator GMF Editor P R O J E C T
Component
<<abstract>> XMI
XMIResource
Resource
XtextResource

88. Integration with EMF
eclipse
Any EMF-based modeling
Code Generator GMF Editor P R O J E C T
Component
<<abstract>> XMI
XMIResource
Resource
XtextResource

89. Integration with EMF
eclipse
Any EMF-based modeling
Code Generator GMF Editor P R O J E C T
Component
<<abstract>> XMI
XMIResource
Resource
XtextResource Text

90. Integration with EMF
eclipse
Any EMF-based modeling
Code Generator GMF Editor P R O J E C T
Component
<<abstract>> XMI
XMIResource
Resource
XtextResource Text
Parser Linker Serializer
ValueConverter ScopeProvider Formatter

91. Customizing
licensed by http://www.wordle.net/

92. Customizing
licensed by http://www.wordle.net/

93. Customizing
licensed by http://www.wordle.net/

94. Customizing
licensed by http://www.wordle.net/

95. Customizing
licensed by http://www.wordle.net/

96. Customizing
MyCustomLabelProvider
licensed by http://www.wordle.net/

97. Dependency Injection with
Google Guice

98. Dependency Injection with
Google Guice

99. Dependency Injection with
Google Guice
No dependency to concrete implementation

100. Dependency Injection with
Google Guice
No dependency to concrete implementation
No explicit construction

101. Dependency Injection with
Google Guice
No dependency to concrete implementation
No explicit construction
Easy testing

102. Dependency Injection with
Google Guice
No dependency to concrete implementation
No explicit construction
Easy testing
Easy composition

103. Advanced Editor
Features

104. Navigation and Validation

105. Navigation and Validation

106. Find declaration
in index

109. Default builder indexes
whole class path

110. Incremental builder

111. Incremental builder

115. Incremental generation

116. Incremental generation

122. Textual
&
Graphical
Combined

131. Navigation

132. Navigation

134. Inplace editing

135. Inplace editing

137. Referring
to
Types

138. Referring
to
Types
• EMF Model for Java types and their members

139. Referring
to
Types
• EMF Model for Java types and their members
• @Runtime: java.lang.reflect

140. Referring
to
Types
• EMF Model for Java types and their members
• @Runtime: java.lang.reflect
• @Eclipse: org.eclipse.jdt.core

141. Java classes

142. Java classes

144. Imports
for Java types

145. Imports
for Java types

146. Instant feedback

148. Content Assist

150. ... with respect to imports

152. Navigation to Java source code

156. Advanced matching of proposals

168. Questions?
www.xtext.org Twitter: @Xtext