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![Practical Code Generation: Java Productivity Enhancement David Noble [email_address] Sr. Solutions Architect, Exist Global San Gabriel Valley Java Users Group http://www.sgvjug.org/ February 25, 2008](https://image.slidesharecdn.com/javacodegenerationdavidnoble-1226528573882543-8/85/Java-Code-Generation-for-Productivity-1-320.jpg)
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![Verbosity “ Succinctness is power” Paul Graham [1] Case study [citation needed] Yellowpages.com Originally in Java: 100 KLOC Converted to Rails: 10 KLOC [1] http://www.paulgraham.com/power.html](https://image.slidesharecdn.com/javacodegenerationdavidnoble-1226528573882543-8/85/Java-Code-Generation-for-Productivity-7-320.jpg)
![Defect Rates Bugs/LOC is basically constant CMU study [citation needed] LOC/day is basically constant Fred Brooks](https://image.slidesharecdn.com/javacodegenerationdavidnoble-1226528573882543-8/85/Java-Code-Generation-for-Productivity-8-320.jpg)
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![Defect Rates Bugs/LOC is basically constant CMU study [citation needed] LOC/day is basically constant Fred Brooks](https://image.slidesharecdn.com/javacodegenerationdavidnoble-1226528573882543-8/75/Java-Code-Generation-for-Productivity-8-2048.jpg)
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Uploaded byDavid Noble
Java Code Generation for Productivity
David Noble presented on practical code generation techniques to improve Java productivity. He discussed how tools, practices, and frameworks can help developers write less code, have fewer defects, and develop applications faster. Specific techniques mentioned include model-driven development, annotations, aspect-oriented programming, bytecode manipulation, and code generation from metadata. Examples of productivity tools for Java include IDE features, code snippet libraries, GUI builders, application generators, and frameworks like Maven, Grails, and Wicket.
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Similar to Java Code Generation for Productivity
Java Code Generation for Productivity
- 1. Practical Code Generation: Java Productivity Enhancement David Noble [email_address] Sr. Solutions Architect, Exist Global San Gabriel Valley Java Users Group http://www.sgvjug.org/ February 25, 2008
- 2. Target Faster development Less defects http://flickr.com/photos/ntang/21736774
- 3. Target http://flickr.com/photos/ntang/21736774 ToolsPractices Productivity
- 4. Java public ListgetIds(List items) { List result = new ArrayList(); Iterator itemIterator = items.iterator(); while (itemIterator.hasNext()) { item = (Item) itemIterator.next(); result.add(item.getId()); } return result; } Example from Matt Good @ matt-good.net
- 5. Java public List<ItemId>getIds(List<Item> items) { List<ItemId> result = new ArrayList<ItemId>(); for (Item item : items) { result.add(item.getId()); } return result; } Example from Matt Good @ matt-good.net
- 6. Python def get_ids(items):return [item.id for item in items]
- 7. Verbosity “ Succinctnessis power” Paul Graham [1] Case study [citation needed] Yellowpages.com Originally in Java: 100 KLOC Converted to Rails: 10 KLOC [1] http://www.paulgraham.com/power.html
- 8. Defect Rates Bugs/LOC is basically constant CMU study [citation needed] LOC/day is basically constant Fred Brooks
- 9. Syntax Declarations CastingGenerics Data structures Helper classes
- 10. Meta-programming Issues AnnotationsReflection Aspect-Oriented Programming (AOP) Bytecode manipulation
- 11. Startup Weekend Oneweekend to launch Over a dozen companies started Only 1 chose Java
- 12. DEMO Rails web application
- 13. Rails Productivity Projectgeneration File generation Model-driven framework Meta-programming
- 14. DEMO Basic Java application
- 15. Java Productivity: IDEProject generation File generation Code snippet generation
- 16. Java Productivity: LanguageAnnotations (JSR 175) Metadata Design time for tools Execution time
- 17. Java Productivity: FrameworkModel-driven frameworks Grails Wicket NakedObjects OpenXava
- 18. Java Productivity: AOPAspect - feature Advice - behavior Joinpoint - execution trigger Pointcut - set of joinpoints Targets - objects to apply aspects to Introduction - add methods to object
- 19. Bytecode Manipulation Example:persistence injection Hibernate TopLink Libraries, etc ASM, BCEL, CGLIB, Javassist, JiBX
- 20. DEMO AppFuse
- 21. DEMO GUI Builder
- 22. SOAP Web ServicesWSDL to Java Java to WSDL
- 23. Application Generators CASErevisited
- 24.
- 25. Resources Code GenerationNetwork http://codegeneration.net/
- 26. Resources Eclipse macrosWindow > Preferences > Java > Editor > Templates Annotations http://java.sun.com/javase/6/docs/technotes/guides/language/annotations.html http://www.developer.com/java/other/article.php/3556176 http://jcp.org/en/jsr/detail?id=175 Maven archetypes http://maven.apache.org/guides/introduction/introduction-to-archetypes.html
- 27. Resources AppFuse http://appfuse.org/display/APF/AppFuse+Maven+PluginGWT http://code.google.com/webtoolkit/
- 28. Resources Wicket http://wicket.apache.org/Grails http://grails.org/ NakedObjects http://www.nakedobjects.org/
- 29. Resources Metro (JAX-WS et al) https://metro.dev.java.net/ Axis2 http://ws.apache.org/axis2/ CXF (formerly XFire) http://cxf.apache.org/
- 30. Resources Netbeans Matissehttp://www.netbeans.org/features/java/swing.html Eclipse VE http://wiki.eclipse.org/VE
- 31. Resources AOP (Aspect Oriented Programming) AspectJ http://www.eclipse.org/aspectj/ JBoss AOP http://www.jboss.org/jbossaop/ Spring http://springframework.org/about
- 32. Resources Eclipse JEThttp://www.eclipse.org/modeling/m2t/?project=jet Eclipse EMF http://www.eclipse.org/modeling/emf/
- 33. Resources Sculptor http://fornax-platform.org/cp/display/fornax/Sculptor+(CSC)http://www.theserverside.com/tt/articles/article.tss?l=ProductivityWithSculptor OptimalJ http://frontline.compuware.com/javacentral/tools/
- 34. Resources MDA (model driven architecture) http://www.omg.org/mda/ Executable UML http://en.wikipedia.org/wiki/Executable_UML
- 35. DISCUSSION Productivity, practices, tools Thanks for coming! David Noble [email_address]