Enhance your Maven plugins with Groovy
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The document discusses enhancing Maven plugins with Groovy. It provides examples of rewriting Java-based Maven plugin code in Groovy, including generating archetypes, writing console output, executing external programs, checking URLs, and testing. The experiences section notes that Groovy allows for more task-oriented and testable code while Java may involve more complex and procedural code with low cohesion. It invites questions and notes job openings are available on the provided website.
Enhance your Maven plugins with Groovy
- 1. © Computas AS 09.09.2010Enhance your Maven plugins with Groovy(experiences with Groovyfication)Harald Søvikhso @ computas.com
- 2. SpeakersHarald SøvikJava Tech Lead, M.Sc.hso@computas.com2© Computas AS 09.09.2010bpmwork support systemsknowledgemanagementconsultancy servicescustom software solutions180 employees w/ M.Sc. or Ph.D.100% owned by employees
- 3. 3© Computas AS 09.09.2010GroovyOOdynamicrun onjvmJava-likeJava-interoperablescripting / web / jms ++
- 4. 4© Computas AS 09.09.2010Pro formaI’m not a Groovyexpert !I’mfocusingon Java <> Groovynot neccessarilythevery best wayofsolving it alltogether !Using pure Java librarieswould make a different story
- 5. 5© Computas AS 09.09.2010GoalInvestigate home-brew enterprise Maven pluginsWould Groovyfication™ affect ..Simplicity? Maintainability? Testability?
- 6. 6© Computas AS 09.09.2010Recipe for your Maven projectadd build step with gmaven-pluginadd dependency to gmaven-mojosrc/java vssrc/groovy.java vs.groovycompile and enjoy !
- 7. 7© Computas AS 09.09.2010Example 0: archetype:generatePurposeWrite text to fileCode generated from archetype:generate type 12A Maven Java plugin development projectDifferencesException handlingControlling flow of execution
- 8. 8© Computas AS 09.09.2010Example 1: plugin:goal ”help”PurposeWrite text to consoleDifferencesMulti line output
- 9. 9© Computas AS 09.09.2010Example 2: Enterprise pluginlogicPurposeExecute external programDetermine exit valueDifferencesException handlingControlling flow of execution
- 10. 10© Computas AS 09.09.2010Example 4: Enterprise pluginlogicPurposeCheckif URL has content (~ ping)DifferencesException handlingControlling flow of execution (“debug comments”)Readability
- 11. 11© Computas AS 09.09.2010Example 5: DTOPurposeInternal ”entity” classDifferencesConstructorConstructorcall, readabilityAccessormethods
- 12. 12© Computas AS 09.09.2010Example 6: TestabilityPurposeTest a method converting a String with windows style path to posix-style pathDifferences”Groovy set of mind”Highlight low cohesionRefactoring opportunities
- 13. 13© Computas AS 09.09.2010Experiences>> Task-oriented, high-level operations Testability readyness<< Complex, procedural code Detailed logging, exception handling Low cohesion
- 14. Questions or comments ?14© Computas AS 09.09.2010Booth B5jobopenings for experienceddevelopers !www.computas.com
Editor's Notes
- #3: computasdrivert stort sett med modellering av forretningsprosesser, fagsystemer og integrasjon