Swing to SWT and Back: Patterns for API Migration by Wrapping - - PowerPoint PPT Presentation

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Swing to SWT and Back: Patterns for API Migration by Wrapping - - PowerPoint PPT Presentation

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Swing to SWT and Back: Patterns for API Migration by Wrapping Thiago Tonelli Bartolomei Ralf L ammel Krzysztof Czarnecki University of Waterloo University of Koblenz-Landau September 15, 2010 Outline Outline 1 - API Migration 2 - Study

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SLIDE 1

Swing to SWT and Back: Patterns for API Migration by Wrapping

Thiago Tonelli Bartolomei Ralf L¨ ammel Krzysztof Czarnecki

University of Waterloo University of Koblenz-Landau

September 15, 2010

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SLIDE 2

Outline

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SLIDE 3

Outline

3

1 - API Migration 2 - Study Design 3 - Study Results 4 - Conclusion and Future Work

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SLIDE 4

1 - API Migration

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SLIDE 5

API Migration

5

Application API Source

Uses

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SLIDE 6

API Migration

6

Application API Source

Uses

Target API

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SLIDE 7

API Migration

7

Application API Source

Uses

Target API Modified Application

Rewrite Uses

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SLIDE 8

API Migration

8

Application API Source

Uses

Target API Modified Application

Rewrite Uses

Wrapper

Wraps Implements Adapt

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SLIDE 9

Related Work

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SLIDE 10

API Migration

10

Application API Source

Uses

Target API Modified Application

Rewrite Uses

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SLIDE 11

API Migration

11

Application API Source

Uses

Target API Modified Application

Rewrite Uses Chow,Notkin [ICSM96] Padioleau et al. [EuroSys08] Procedural

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SLIDE 12

API Migration

12

Application API Source

Uses

Target API Modified Application

Rewrite Uses Chow,Notkin [ICSM96] Padioleau et al. [EuroSys08] Procedural la n et al. [ ] Nita,Notkin [IC 0] Simple OO

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SLIDE 13

API Migration

13

Application API Source

Uses

Target API Modified Application

Rewrite Uses Chow,Notkin [ICSM96] Padioleau et al. [EuroSys08] Procedural la n et al. [ ] Nita,Notkin [IC 0] Simple OO el, iwan [ICSE0 ] Perkins [PASTE0 ] Upgrade

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SLIDE 14

API Migration

14

Application API Source

Uses

Target API Wrapper

Wraps Implements Adapt

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SLIDE 15

API Migration

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Application API Source

Uses

Target API Wrapper

Wraps Implements Adapt r I Procedural to OO

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SLIDE 16

API Migration

16

Application API Source

Uses

Target API Wrapper

Wraps Implements Adapt r I Procedural to OO a a l To Services

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SLIDE 17

API Migration

17

Application API Source

Uses

Target API Wrapper

Wraps Implements Adapt r I Procedural to OO a a l To Services l i l I Upgrade

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SLIDE 18

API Migration

18

Application API Source

Uses

Target API Wrapper

Wraps Implements Adapt

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SLIDE 19

Limitations (Motivations)

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SLIDE 20

Limitations (Motivations)

20

Simple APIs

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SLIDE 21

Limitations (Motivations)

20

Simple APIs No Deep Inheritance Hierarchies

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SLIDE 22

Limitations (Motivations)

20

Simple APIs No Deep Inheritance Hierarchies Simple Mappings

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SLIDE 23

2 - Study Design

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SLIDE 24

Research Questions

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SLIDE 25

Research Questions

23

  • 1. What are the design challenges faced by developers

when implementing wrapping layers around OO APIs?

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SLIDE 26

Research Questions

23

  • 1. What are the design challenges faced by developers

when implementing wrapping layers around OO APIs?

  • 2. What are the solutions employed in practice?
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SLIDE 27

Subjects

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SLIDE 28

Subjects

25

SwingWT

31 Kloc

SWTSwing

65 Kloc

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SLIDE 29

Subjects

26

v3.2.2, 90 Kloc

SWT

v1.4, 234 Kloc

Swing

Wraps Wraps

SwingWT

31 Kloc

SWTSwing

65 Kloc

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SLIDE 30

Subjects

27

XOM2JDOM

7 Kloc v3.2.2, 90 Kloc

SWT

v1.4, 234 Kloc

Swing

Wraps Wraps

SwingWT

31 Kloc

SWTSwing

65 Kloc

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SLIDE 31

Subjects

28

v1.2.1, 19 Kloc

XOM

v1.1, 9 Kloc

JDOM

Wraps

XOM2JDOM

7 Kloc v3.2.2, 90 Kloc

SWT

v1.4, 234 Kloc

Swing

Wraps Wraps

SwingWT

31 Kloc

SWTSwing

65 Kloc

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SLIDE 32

Methodology

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SLIDE 33

Methodology

30

  • 1. Uncover design challenges
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SLIDE 34

Methodology

30

  • 1. Uncover design challenges

Source Code Original Developers Type Correspondences

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SLIDE 35

Methodology

30

  • 1. Uncover design challenges

Source Code Original Developers Type Correspondences

  • 2. Understand solutions
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SLIDE 36

Methodology

30

  • 1. Uncover design challenges

Source Code Original Developers Type Correspondences

  • 2. Understand solutions

Source Code Code Queries Design Patterns

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SLIDE 37

Methodology

30

  • 1. Uncover design challenges

Source Code Original Developers Type Correspondences

  • 2. Understand solutions

Source Code Code Queries Design Patterns

  • 3. Measure presence of design patterns
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SLIDE 38

Methodology

30

  • 1. Uncover design challenges

Source Code Original Developers Type Correspondences

  • 2. Understand solutions

Source Code Code Queries Design Patterns

  • 3. Measure presence of design patterns

Metrics

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SLIDE 39

3 - Study Results

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SLIDE 40

API Wrapping Challenges & Design Patterns

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SLIDE 41

API Wrapping Challenges and Design Patterns

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Challenge Design Pattern Non-trivial Mapping Multiplicities Layered Adapter Stateful Adapter Inversion of Control Inverse Delegation Correspondence of Object Identities Wrapping Identity Map Varying Creation and Wiring Protocols Delayed Instantiation Varying Type Hierarchies

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SLIDE 42

ADAPTER Pattern

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SLIDE 43

Java Vectors to ArrayLists

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Vector to ArrayList

36

Application Vector

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Vector to ArrayList

37

Application Vector

i cla Vector i Vector i void add Object i void setSize int

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SLIDE 46

Vector to ArrayList

38

Application Vector

ro

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Vector to ArrayList

39

Application Vector

ro

i cla Vector i Vector i void add Object i void setSize int

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SLIDE 48

Vector to ArrayList

40

Application Vector Arra

ro

i cla Vector i Vector i void add Object i void setSize int

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Vector to ArrayList

41

Application Vector Arra

ro

i cla Vector ArrayList ptee i Vector i void add Object i void setSize int

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Vector to ArrayList

42

Application Vector Arra

ro

i cla Vector ArrayList ptee i Vector a ptee ArrayList i void add Object a ptee add o i void setSize int le a ptee size a ptee add le a ptee size a ptee

  • ve
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SLIDE 51

Sample GUI Application

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Sample GUI Application

44

SWT Swing

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SWT GUI

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SLIDE 54

SWT GUI

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SLIDE 55

SWT GUI

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Shell

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SLIDE 56

SWT GUI

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Display Shell

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SWT GUI

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Display Shell List

data

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SLIDE 58

SWT GUI

50

Display Shell List

data

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SLIDE 59

SWT GUI

51

Display Shell List

data

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SLIDE 60

SWT GUI

52

Display Shell List Sel i s

data

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SLIDE 61

SWT GUI

53

Display Shell List Sel i s

data

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SLIDE 62

Swing GUI

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SLIDE 63

Swing GUI

55

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Swing GUI

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JFrame Container

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Swing GUI

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JFrame JScrollPane Container

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Swing GUI

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JFrame JScrollPane

data

a

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Swing GUI

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JFrame JScrollPane

data

a

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Swing GUI

60

JFrame JScrollPane n

data

a

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Swing GUI

61

JFrame JScrollPane n

  • nListener

ListModel

data

Container

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Swing GUI

62

JFrame JScrollPane JList JCheckBox JButton ActionListener ListModel

data

Container

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SLIDE 71

Swing GUI

63

JFrame JScrollPane JList JCheckBox JButton ActionListener ListModel

data

Container

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Mapping SWT to Swing

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SWT to Swing

65

Display Shell List Sel i s

data

a l a st i s List

data

ai

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SWT to Swing

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Display Shell

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SWT to Swing

67

Display Shell JFrame Container

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SLIDE 76

SWT to Swing

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Display Shell JFrame Container

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SWT to Swing

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Display Shell JFrame Container

isDisposed()

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SLIDE 78

SWT to Swing

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Display Shell List a ai

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SWT to Swing

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Display Shell List a l a st List

data

ai

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SWT to Swing

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Display Shell List a l a st List

data

ai

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SWT to Swing

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Display Shell List a l a st List

data

ai

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SWT to Swing

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Display Shell List a l a st List

data

ai

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SWT to Swing

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Display Shell List a l a st List

data

ai

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SWT to Swing

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Display Shell List a l a st List

data

ai

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SLIDE 85

SWT to Swing

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Display Shell List a l a st List

data

ai

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SLIDE 86

SWT to Swing

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Display Shell List a l a st List

data

ai

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SLIDE 87

Non-trivial Mapping Multiplicities

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Target Multiplicities

80

Name Example

No Target

Display→ ∅

Single Target

Vector→ArrayList

Alternative Targets

Button→JButton | JCheckBox

Composite Targets

List→JList, ListModel

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SLIDE 89

Target Multiplicities

80

Name Example

No Target

Display→ ∅

Single Target

Vector→ArrayList

Alternative Targets

Button→JButton | JCheckBox

Composite Targets

List→JList, ListModel Alternative and Composite List → (JList, ListModel)|(JList, ListModel, JScrollPane)

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SLIDE 90

Layered Adapter

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Layered Adapter

82

ScrollableJListAdapter SimpleJListAdapter

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SLIDE 92

Layered Adapter

82

ScrollableJListAdapter SimpleJListAdapter

Alternative and Composite List → (JList, ListModel)|(JList, ListModel, JScrollPane)

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Stateful Adapter

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Stateful Adapter

84

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SWT to Swing

85

Display Shell List a l a st List

data

ai

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SWT to Swing

86

Display Shell List Sel i s a l a st List

data

ai

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SLIDE 97

SWT to Swing

87

Display Shell List Sel i s a l a st i s List

data

ai

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SLIDE 98

SWT to Swing

88

Display Shell List Sel i s a l a st i s List

data

ai

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Inversion of Control

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Inverse Delegation

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SWT to Swing

91

Display Shell List Sel i s a l a st i s List

data

ai

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SWT to Swing

92

Display Shell List Sel i s a l a st i s List

data

ai

getChildren()

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SWT to Swing

93

Display Shell List Sel i s a l a st i s List

data

ai

getChildren() getComponents()

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SWT to Swing

94

Display Shell List Sel i s a l a st i s List

data

ai

getChildren() getComponents()

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SWT to Swing

95

Display Shell List Sel i s a l a st i s List

data

ai

getChildren() getComponents()

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Correspondence of Object Identities

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Wrapping Identity Map

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SLIDE 108

Wrapper Metrics

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SLIDE 109

Wrapper Metrics

99

Wrapper

SwingWT SWTSwing XOM2JDOM

Layered Adapters 64 54 1 Stateful Adapter 98 181 13 Inverse Delegation 20 59 1 Wrapping Identity Map ✔ ✔ ✔ Delayed Instantiation ✔ ✘ ✘

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4 - Conclusion and Future Work

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Conclusion

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Conclusion

102

Challenges of OO API Migration by Wrapping in practice

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Conclusion

102

Challenges of OO API Migration by Wrapping in practice Solutions as design patterns

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Future Work

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Future Work

104

Validation of patterns in additional projects and domains

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SLIDE 116

Future Work

104

Validation of patterns in additional projects and domains DSL for API Migration

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Questions?