Slides for my talk on Domain Specific Languages at the Eclipse DemoCamp in Berlin.

1. Peter Friese, itemis
@peterfriese
@xtext
(c) 2009 Peter Friese. Distributed under the EDL V1.0 - http://www.eclipse.org/org/documents/edl-v10.php
More info: http://www.peterfriese.de / http://www.itemis.com

2. ➊
Peter Friese, itemis
@peterfriese
@xtext
(c) 2009 Peter Friese. Distributed under the EDL V1.0 - http://www.eclipse.org/org/documents/edl-v10.php
More info: http://www.peterfriese.de / http://www.itemis.com

3. ➊ ➋ Peter Friese, itemis
@peterfriese
@xtext
(c) 2009 Peter Friese. Distributed under the EDL V1.0 - http://www.eclipse.org/org/documents/edl-v10.php
More info: http://www.peterfriese.de / http://www.itemis.com

4. ➊ ➋ ➌
Peter Friese, itemis
@peterfriese
@xtext
(c) 2009 Peter Friese. Distributed under the EDL V1.0 - http://www.eclipse.org/org/documents/edl-v10.php
More info: http://www.peterfriese.de / http://www.itemis.com

5. ➊ ➋ ➌
Peter Friese, itemis
@peterfriese
@xtext
(c) 2009 Peter Friese. Distributed under the EDL V1.0 - http://www.eclipse.org/org/documents/edl-v10.php
More info: http://www.peterfriese.de / http://www.itemis.com

7. ?
Right tool for the job?

8. Your trusty swiss army knife!

9. You’d want to core a few more apples...

10. ... for an apple cake.

11. Still the best tool for the job?

12. Better use this one.

13. and this one:

14. A DSL is...

15. A specific tool
for a specific job

16. A specific tool
for a specific job

17. Think about your job!

18. Feel like this?

19. ...

20. because

21. you

22. need

23. to

24. write

25. THIS?

26. THIS?

27. Wrong Level of Abstraction!
http://www.flickr.com/photos/rykerstribe/3222969466/

29. @SuppressWarnings("serial")
@Entity
@Table(name = "CUSTOMER_INFO")
public class CustomerInfo implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "idSeq")
@SequenceGenerator(name = "idSeq", sequenceName = "CUST_SEQ", allocationSize = 1)
@Column(name = "CUST_ID", nullable = false)
private String customerId;
public void setCustomerId(String customerId) {
this.customerId = customerId;
}
public String getCustomerId() {
return customerId;
}
@Column(name = "EMAIL", nullable = false, length = 128)
private String emailAddress;
public String getEmailAddress() {
return emailAddress;
}
public void setEmailAddress(String emailAddress) {
String oldValue = emailAddress;
this.emailAddress = emailAddress;
firePropertyChangedEvent("emailAddress", oldValue, this.emailAddress);
}

30. @SuppressWarnings("serial")
@Entity
@Table(name = "CUSTOMER_INFO")
public class CustomerInfo implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "idSeq")
@SequenceGenerator(name = "idSeq", sequenceName = "CUST_SEQ", allocationSize = 1)
@Column(name = "CUST_ID", nullable = false)
private String customerId;
public void setCustomerId(String customerId) {
this.customerId = customerId;
}
public String getCustomerId() {
return customerId;
}
@Column(name = "EMAIL", nullable = false, length = 128)
private String emailAddress;
public String getEmailAddress() {
return emailAddress;
}
public void setEmailAddress(String emailAddress) {
String oldValue = emailAddress;
this.emailAddress = emailAddress;
firePropertyChangedEvent("emailAddress", oldValue, this.emailAddress);
}

31. entity CustomerInfo
(id=CUST_ID, sequenceName=CUST_SEQ)
{
String emailAddress (notNull, length = 128)
}

32. entity CustomerInfo
(id=CUST_ID, sequenceName=CUST_SEQ)
{
String emailAddress (notNull, length = 128)
}
Bean
DAO
(POJO)

33. Demo
Creating an Entity DSL in 3 Simple Steps

34. ➊
Create a DSL

37. Define the Grammar

40. Compile the Grammar

43. Start the Runtime Workbench

46. Start Using the DSL

48. ➋

49. ➋
Pimp My Write

50. ➋

52. Create a Label Provider

54. ➌
Add a Generator

57. Adding a Builder

59. ∑

60. Concentrate on
Essentials

61. Higher Efficiency

62. Better Maintainability
http://www.flickr.com/photos/flyforfun/2638180406/

63. No More Boring Code

64. Twitter: @xtext
http://www.xtext.org

65. Committers
Heiko Sven Moritz Peter Dennis Jan Patrick Sebastian Michael Knut
Behrens Efftinge Eysholdt Friese Hübner Köhnlein Schönbach Zarnekow Clay Wannheden
Individual