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

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

Karsten Thoms Sebastian Zarnekow
Jan Köhnlein
Markus Voelter

Karsten Thoms Sebastian Zarnekow
Jan Köhnlein
Markus Voelter

Domain-specific Language
(DSL)

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

Example: JPA

@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;
}
}

@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;
}
}

Abstraction

The right tool
for
the right job

MWE
Xpand

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Reference
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Model
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Reference
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Model
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Reference
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DSL Workbench

Reference
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DSL Workbench
Editor

Reference
ar
Model
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DSL Workbench
Editor Infrastucture

Reference
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Model
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DSL Workbench
Editor Infrastucture Generator

Editor
Generator

Editor
AST
Generator

Editor
AST TeX Xpa
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Editor
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Editor
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Showtime

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

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