Dependency Injection
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During our [[JavaOne2010]] talk about [[Modularity patterns]] we compared [[dependency injection]] and [[injectable singleton]]s. As the comparison was well accepted and as I think it revealed some things that were just implicitly present in our minds, here is an explicit enumeration. Here is the beginner's guide to [[modularity]] of [[dependency injection]] (namely [[Spring]]) fans. | During our [[JavaOne2010]] talk about [[Modularity patterns]] we compared [[dependency injection]] and [[injectable singleton]]s. As the comparison was well accepted and as I think it revealed some things that were just implicitly present in our minds, here is an explicit enumeration. Here is the beginner's guide to [[modularity]] of [[dependency injection]] (namely [[Spring]]) fans. | ||
| + | === Imports vs. [[Dependencies]] === | ||
| - | [[TBD]] | + | [[TBD]]: [[Dependency injection]] fans look into import section to find [[dependencies]] of their code. |
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| + | === Versioning === | ||
| + | |||
| + | [[TBD]]: No [[versioning]] in [[DI]]. | ||
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| + | === Application Factory & co. === | ||
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| + | [[TBD]]: Modularity (aka [[OSGi]] or [[NetBeans Runtime Container]]) provides only global application factories. | ||
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| + | === Initialization === | ||
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| + | [[TBD]]: Inherent in modularity. Verbose in [[DI]]. | ||
| + | |||
| + | === Injection === | ||
| + | |||
| + | [[TBD]]: Composable (e.g. no master description) in modularity. Explicit in [[DI]]. | ||
Revision as of 23:50, 26 September 2010
A special form of component injection following the classical Hollywood principle: the framework calls, and beans just react to such calls. See wikipedia::dependency injection.
Contents |
Translation Basics
During our JavaOne2010 talk about Modularity patterns we compared dependency injection and injectable singletons. As the comparison was well accepted and as I think it revealed some things that were just implicitly present in our minds, here is an explicit enumeration. Here is the beginner's guide to modularity of dependency injection (namely Spring) fans.
Imports vs. Dependencies
TBD: Dependency injection fans look into import section to find dependencies of their code.
Versioning
TBD: No versioning in DI.
Application Factory & co.
TBD: Modularity (aka OSGi or NetBeans Runtime Container) provides only global application factories.
Initialization
TBD: Inherent in modularity. Verbose in DI.
Injection
TBD: Composable (e.g. no master description) in modularity. Explicit in DI.
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