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Evolving systems and the link to service orientation

Angelo van der Sijpt
Angelo van der Sijpt

A talk I gave at the Semantic Technology & Business Conference in London, 26 September 2011 ( http://semtechbizuk2011.semanticweb.com/sessionPop.cfm?confid=63&proposalid=4198 )

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Evolving systems and the link to service orienta4on ...and the search for a shorter .tle Angelo van der Sijpt angelo.vandersijpt@luminis.eu 鞄岳岳沿://敬敬敬.鍖i界一姻.界看馨/沿鞄看岳看壊/温姻岳看鉛看乙/313055444/
$ whoami Angelo van der Sijpt Commi:er with Apache ACE So=ware engineer at Luminis Technologies angelo.vandersijpt@luminis.eu Buzzwords: Java, OSGi, Agile
ARL 鞄岳岳沿://敬敬敬.鍖i界一姻.界看馨/沿鞄看岳看壊/壊鞄看稼一/57302289/
Formal' curriculum ... ... school's'objec+ves curriculum personal)objec-ves ... ... personal)learning)path
personal)learning)path Goal%selec)on Learning( objec-ves
Learning( objec-ves Object'selec*on Content Executable* learning design Execu&on
Formal' curriculum ... ... school's'objec3ves curriculum personal'objec3ves ... ... personal'learning'path Goal'selec3on Learning( objec-ves Object'selec*on Content Executable* learning design Execu&on
ARL Where is this student compared to his class? ve Re a( st ric or pl What learning style do I have? (v Ex ed e uc pro . 鍖le Who else has problems with this? Educ.& domain What should I do now? http://www.鍖ickr.com/photos/jeffsmallwood/233853485
The pro鍖le service 鞄岳岳沿://敬敬敬.鍖i界一姻.界看馨/沿鞄看岳看壊/界姻温噛霞稼艶庄乙鞄恢看姻鉛温糸霞/411869140/
Pluggable Evolvable Driven by code
Query q = new Query() .select(person()) .where(person().firstName(literal("Roy"))); RowSet<Row> rowSet = q.select(model); Person roy = rowSet.iterator().next().get(person()); roy.lastName(); roy.lastName("Trenneman");
PIM:Person Subject9 Curriculum hasTopConcept SKOS: hasEduca/on Achievement ha f sA O ch SKOS:Concept sist iev con ed Educa/on Learing Objec/ve
new Query().select(curriculum().label(), learningDimension(), learningDimension().label(), achievement(), learningdimension("sublearningdimension")) .where( curriculum() .hasTopConcept(learningDimension()) .label()), learningdimension("sublearningdimension") .broader(learningDimension()) learningDimension() .label(), p.has(education()), optional( education() .consistsOf(achievement()), achievement() .hasAchieved(learningdimension("sublearningdimension"))), filter("bound(" + achievement() + ")");
Service Orienta4on 鞄岳岳沿://敬敬敬.鍖i界一姻.界看馨/沿鞄看岳看壊/界温馨一稼看敬壊/4712191684
A Service Oriented Architecture is comprised of independently de鍖ned components, providing services through agreed-足upon interfaces. Components can in turn have dependencies on other services. 鞄岳岳沿://敬敬敬.鍖i界一姻.界看馨/沿鞄看岳看壊/界温馨一稼看敬壊/4712191684
Service Orienta4on Mo.va.on Isola.on & decoupling (Coping with or causing) B A dynamic composi.on binding Vocabulary Service, component, mandatory/op.onal dependency Excluded Rules Discovery Services are self-足contained Orchestra.on Interfaces are de鍖ned Communica.on beforehand method
鞄岳岳沿://敬敬敬.鍖i界一姻.界看馨/沿鞄看岳看壊/温姻岳看鉛看乙/313055444/
Service Module Lifecycle Framework
More on OSGi De鍖nes a framework Bundles (components) are Java jar 鍖les Contain code, metadata, and arbitrary data Hall et al. C rea tin g M odu lar A ppl ica tio ns in J ava OSGi IN ACTION Richard S. Hall Karl Pauls Stuart McCulloch David Savage FOREWORD BY PETER KRIENS MANNING MANNING
SOA and data
Code centric Data never dies, but code can go Plugging axioms and entailments
Evolving systems and the link to service orientation
Allows (de-足)installa.on of components Respects the service dependency tree Tradeo鍖s Transform data, or pay with code complexity
Versioning Semantic Versioning Code: were ge[ng there Technical Whitepaper Revision 1.0 May 6, 2010 Major/minor/micro Ontologies: version from the start Closed system? Place addi.ons in 息 2010 OSGi Alliance All Rights Reserved. same version Open system? Bump version on every change (but minimize those)
In short Code and data can learn from each other Evolve code and data together Package them together Consider your versioning scheme Do, or dont, worry about interchangeability
Evolving systems and the link to service orienta4on Angelo van der Sijpt angelo.vandersijpt@luminis.eu http://www.鍖ickr.com/photos/98469445@N00/327471676/

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Evolving systems and the link to service orientation

  • 1. Evolving systems and the link to service orienta4on ...and the search for a shorter .tle Angelo van der Sijpt angelo.vandersijpt@luminis.eu 鞄岳岳沿://敬敬敬.鍖i界一姻.界看馨/沿鞄看岳看壊/温姻岳看鉛看乙/313055444/
  • 2. $ whoami Angelo van der Sijpt Commi:er with Apache ACE So=ware engineer at Luminis Technologies angelo.vandersijpt@luminis.eu Buzzwords: Java, OSGi, Agile
  • 3. ARL 鞄岳岳沿://敬敬敬.鍖i界一姻.界看馨/沿鞄看岳看壊/壊鞄看稼一/57302289/
  • 4. Formal' curriculum ... ... school's'objec+ves curriculum personal)objec-ves ... ... personal)learning)path
  • 5. personal)learning)path Goal%selec)on Learning( objec-ves
  • 6. Learning( objec-ves Object'selec*on Content Executable* learning design Execu&on
  • 7. Formal' curriculum ... ... school's'objec3ves curriculum personal'objec3ves ... ... personal'learning'path Goal'selec3on Learning( objec-ves Object'selec*on Content Executable* learning design Execu&on
  • 8. ARL Where is this student compared to his class? ve Re a( st ric or pl What learning style do I have? (v Ex ed e uc pro . 鍖le Who else has problems with this? Educ.& domain What should I do now? http://www.鍖ickr.com/photos/jeffsmallwood/233853485
  • 9. The pro鍖le service 鞄岳岳沿://敬敬敬.鍖i界一姻.界看馨/沿鞄看岳看壊/界姻温噛霞稼艶庄乙鞄恢看姻鉛温糸霞/411869140/
  • 10. Pluggable Evolvable Driven by code
  • 11. Query q = new Query() .select(person()) .where(person().firstName(literal("Roy"))); RowSet<Row> rowSet = q.select(model); Person roy = rowSet.iterator().next().get(person()); roy.lastName(); roy.lastName("Trenneman");
  • 12. PIM:Person Subject9 Curriculum hasTopConcept SKOS: hasEduca/on Achievement ha f sA O ch SKOS:Concept sist iev con ed Educa/on Learing Objec/ve
  • 13. new Query().select(curriculum().label(), learningDimension(), learningDimension().label(), achievement(), learningdimension("sublearningdimension")) .where( curriculum() .hasTopConcept(learningDimension()) .label()), learningdimension("sublearningdimension") .broader(learningDimension()) learningDimension() .label(), p.has(education()), optional( education() .consistsOf(achievement()), achievement() .hasAchieved(learningdimension("sublearningdimension"))), filter("bound(" + achievement() + ")");
  • 14. Service Orienta4on 鞄岳岳沿://敬敬敬.鍖i界一姻.界看馨/沿鞄看岳看壊/界温馨一稼看敬壊/4712191684
  • 15. A Service Oriented Architecture is comprised of independently de鍖ned components, providing services through agreed-足upon interfaces. Components can in turn have dependencies on other services. 鞄岳岳沿://敬敬敬.鍖i界一姻.界看馨/沿鞄看岳看壊/界温馨一稼看敬壊/4712191684
  • 16. Service Orienta4on Mo.va.on Isola.on & decoupling (Coping with or causing) B A dynamic composi.on binding Vocabulary Service, component, mandatory/op.onal dependency Excluded Rules Discovery Services are self-足contained Orchestra.on Interfaces are de鍖ned Communica.on beforehand method
  • 18. Service Module Lifecycle Framework
  • 19. More on OSGi De鍖nes a framework Bundles (components) are Java jar 鍖les Contain code, metadata, and arbitrary data Hall et al. C rea tin g M odu lar A ppl ica tio ns in J ava OSGi IN ACTION Richard S. Hall Karl Pauls Stuart McCulloch David Savage FOREWORD BY PETER KRIENS MANNING MANNING
  • 21. Code centric Data never dies, but code can go Plugging axioms and entailments
  • 23. Allows (de-足)installa.on of components Respects the service dependency tree Tradeo鍖s Transform data, or pay with code complexity
  • 24. Versioning Semantic Versioning Code: were ge[ng there Technical Whitepaper Revision 1.0 May 6, 2010 Major/minor/micro Ontologies: version from the start Closed system? Place addi.ons in 息 2010 OSGi Alliance All Rights Reserved. same version Open system? Bump version on every change (but minimize those)
  • 25. In short Code and data can learn from each other Evolve code and data together Package them together Consider your versioning scheme Do, or dont, worry about interchangeability
  • 26. Evolving systems and the link to service orienta4on Angelo van der Sijpt angelo.vandersijpt@luminis.eu http://www.鍖ickr.com/photos/98469445@N00/327471676/