About the standardized way of using Dependency Injection in OSGi applications

1. Declarative Services Dependency Injection OSGi style Felix Meschberger Day Management AG [email_address] Zurich, September 22 nd 2009

3. [email_address]

4. http://blog.meschberger.ch

6. Configuration Admin

7. Metatype Service

9. Implementations for OSGi

10. Declarative Services

11. Issues

12. Maven SCR Plugin

13. Declarative Services 1.1

15. Traditionally Descriptor Based

16. Current Trend: Java Annotations

18. iPOJO (Evolution of Declarative Services)

19. Spring DM

20. Blueprint Service (Evolution of Spring DM)

21. Peaberry (based on Google Guice)

22. … possibly more …

24. Part of Compendium Services since R4

25. XML Descriptor Based

26. Lifecycle Management

27. Dependency Injection (Services)

28. Configuration Support

30. Descriptors may be embedded

34. Instantiation

35. Configuration

36. Activation

37. Dependency Injection

38. Deactivation

39. Unload on Bundle Stop

45. Service

46. Service Factory

47. Component Factory

49. Lookup oriented using ComponentContext

50. Optionality

51. Multiplicity

52. Binding Policy

54. Properties from Descriptor

55. Provided through ComponentContext.getProperties()

60. ComponentInstance.dispose()

61. Controlled by Application Only

62. Configuration may not be Factory Configuration

71. Wrappers of primitive types

72. String

74. Problematic to keep in-sync with DS Classes

75. YAXF – Yet another XML File

78. Activate and Deactivate method names fixed

79. Configuration through ComponentContext

80. Service properties through ServiceReference

81. Fixed in Declarative Services 1.1

83. Configurable names for (de)activator methods

85. BundleContext

86. Map

87. int/Integer (deactivator only)

88. Any combination

90. Service instance

92. Ignore

95. protected

96. private (if in the component class)

98. Questions

99. Thank You!