Domain-specific Languages with Eclipse Modeling with Sebastian Zarnekow, Karsten Thoms, Markus Völter Tutorial at Eclipse Summit Europe 2009

1. Software Installation
• Unzip the Eclipse distribution matching your OS
Windows users: Use a location close to the root directory
• Run the Eclipse executable
• Choose File -> Import -> Existing projects into workspace
• Select Archive file and choose workspace.zip from the USB
stick

2. Domain-specific Languages
With
Eclipse Modeling
Jan Köhnlein, Karsten Thoms
Markus Völter, Sebastian Zarnekow
itemis AG

4. Karsten Thoms Sebastian Zarnekow
Jan Köhnlein
Markus Voelter

5. Karsten Thoms Sebastian Zarnekow
Jan Köhnlein
Markus Voelter

6. Domain-specific Language
(DSL)

7. Domain-specific Language
(DSL)
a formal, processable language
targeting at a specific viewpoint
or aspect of a system.

8. Example: JPA

9. @Entity
public class Customer implements Serializable {
private Long id;
private String name;
private Address address;
private Collection<Order> orders = new HashSet<Order>();
private Set<PhoneNumber> phones = new HashSet<PhoneNumber>();
public Customer() {}
@Id
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Address getAddress() {
return address;
}
public void setAddress(Address address) {
this.address = address;
}
@OneToMany
public Collection<Order> getOrders() {
return orders;
}
public void setOrders(Collection<Order> orders) {
this.orders = orders;
}
@ManyToMany
public Set<PhoneNumber> getPhones() {
return phones;
}
public void setPhones(Set<PhoneNumber> phones) {
this.phones = phones;
}
}

10. @Entity
public class Customer implements Serializable {
private Long id;
private String name;
private Address address;
private Collection<Order> orders = new HashSet<Order>();
private Set<PhoneNumber> phones = new HashSet<PhoneNumber>();
public Customer() {}
@Id
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
} entity Customer {
public void setName(String name) {
this.name = name;
String name
} Address address
public Address getAddress() {
return address; Order* orders
}
public void setAddress(Address address) {
PhoneNumber** phones
this.address = address; }
}
@OneToMany
public Collection<Order> getOrders() {
return orders;
}
public void setOrders(Collection<Order> orders) {
this.orders = orders;
}
@ManyToMany
public Set<PhoneNumber> getPhones() {
return phones;
}
public void setPhones(Set<PhoneNumber> phones) {
this.phones = phones;
}
}

11. Abstraction

12. The right tool
for
the right job

13. MWE
Xpand

15. G
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ar

16. Reference
ar
Model
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17. Reference
ar
Model
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18. Reference
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Model
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DSL Workbench

19. Reference
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Model
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DSL Workbench
Editor

20. Reference
ar
Model
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ra
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DSL Workbench
Editor Infrastucture

21. Reference
ar
Model
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DSL Workbench
Editor Infrastucture Generator

22. Editor
Generator

23. Editor
AST
Generator

24. Editor
AST TeX Xpa
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m l
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Te m a p n ad
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at te
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Generator

25. Editor
AST TeX Xpa
T ma p
TeXeXpa p n nd
m l
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Te m a p n ad
m pln lad te
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Generator

26. Editor
AST TeX Xpa
T ma p
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Generator
E
Ex xe
Ex A c
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Ex Ae etcu uta
Aecrtcuifata bl
A rti uifata ctbl e
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ifa c b le
ct t le

27. Showtime

28. Generation Gap
Pattern
BaseClass
baseMethod()
framework
manually written
AbstractGeneratedClass
generatedMethod() generated
ConcreteCustomizedClass
overriddenMethod()
generated once
additionalMethod() modified manually

29. Questions?
find out more at
http://www.xtext.org