Strategies for Loose Coupling in Large Java Desktop Applications. Geertjan Wielenga

Transcription

1 Strategies for Loose Coupling in Large Java Desktop Applications Geertjan Wielenga

2 Agenda Background Strategies Demos & Discussion

3 NetBeans: What Is It? NetBeans IDE NetBeans Platform NetBeans Community

4 December 1997

5 December 2011

6 Using NetBeans In Any Way At All? > We want to hear from you. > We want to help you (for free). > We want to promote any work you do (for free).

7 NetBeans Platform Overview > Framework for developing large Java desktop applications. > Provides > Runtime container. > APIs solving typical desktop problems.

8 NetBeans Platform

9 Why Use the NetBeans Platform? Pre-defined generic features. Code generators for custom features. Less boilerplate code, less cycles. Consistency of user interface. Modularity & loose coupling.

10 NetBeans Platform Features Pluggable: > menubar > toolbar > window system/docking framework > Options settings > JavaHelp > custom features Update Mechanism Modularity Generators for launchers, ZIP distributions, installers, and JNLP.

11 Examples Boeing Northrop Grumman South African Defence Force Swedish Defence Force Banks Bioinformatics Mining...

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26 Common Basis App Module 6 App Module 5 App Module 4 App Module 3 App Module 2 App Module 1 Runtime container handles lifecycle. APIs provide extension API Modules/Plugins points & utilities. Runtime Container

27 Strategies for Loose Coupling Service Registry Decouple tools from user interface Context Sensitivity Decouple actions from user interface

28 Air Traffic Control Requirements Create an ATC system for multiple different airports. Must be able to view & manage runways. Must be able to view engineers per runway. Moscow Airport > Runways: Pushkin, Tolstoy, Dostoyevksy > Must be able to reallocate engineers St. Petersburg Airport > Runway: Nabokov

29 Demo

30 Migrating to NetBeans Platform Keep all algorithms, processors, etc. Port everything to modules. Wrap JPanels in TopComponents. Wrap business objects in Nodes. Move to BeanTreeView from Jtree, etc. Integrate NetBeans RCP features. Leverage/reuse as much as you can. Focus on domain, not infrastructure. Porting is a process.

31 Technical Concepts Module == a collection of Java packages that defines a feature Lookup for Loose Coupling Central Registry TopComponent Cookies/Capabilities Node Explorer Views Actions: Global/Context Sensitive

32 Summary NetBeans Platform: > Framework simplifying the development of modular, scalable, Swing applications. > Free & open source. > Stable & very extensive. > Used internationally in many companies.

33 Using NetBeans In Any Way At All? > We want to hear from you. > We want to help you (for free). > We want to promote any work you do (for free).

34 platform.netbeans.org/tutorials

35 Course Basic Course > Cover all the basic NetBeans APIs. > A lot of hands on work & coding. > One lecture/one workshop pattern. > Very practically oriented, free book. Porting Workshop > Brief overview of NetBeans APIs. > Step by step guided migration of your app. > Simple prototype ready for demo. 3 or 5 days, X number of engineers nbplatform-certified-training/

36 Resources NetBeansDeveloperFAQ nbm-porting-basic.html nbplatform-certified-training/

37 Using NetBeans In Any Way At All? > We want to hear from you. > We want to help you (for free). > We want to promote any work you do (for free).

38 Questions & Answers