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The web framework dream team Johan Eltes [email_address] www.callistaenterprise.se
Agenda ,[object Object],[object Object],[object Object],[object Object],[object Object],The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB
Strategic drivers behind reference architecture The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB … National IT strategi for healthcare Regional strategi Regional projects IT architecture Portal framework
IT Architecture for VGRegion Healthcare Core Healthcare interop infrastructure Legacy EPR 1 Legacy EPR 2 Internal log Internal log … Internal Workflow Internal Workflow Gradual adoption of legacy healthcare systems Unified Information View (portal) EPR My Tasks SOAPlatform Alarming and logging Portal framework People Directory Internal roles database LabProcess Internal roles database Adapters Adapters Workflow Engine YP Legacy Lab System Internal log Internal Workflow Internal roles database Adapters Taxonomy services New business process support (composite apps), utilizing service enabled back-ends  Native Services
Layered View Back-end enterprise resources Canonical (Enterprise) Services Composite Applications Business Model Workflow Presentation Composite Services Local development. Put together a development framework! SOA  Platform COTS and semi-COTS
Requirement: “Use-Case-as-service” The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB Usecase  Process Service Data Service Business Value
Requirement: Portability The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB Container portability (Java EE) Portability across Web app and Portlet Web-app Portlet
Requirement: Web designer friendly templating technology The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB NetWeaver Design in DreamWeaver Development in XML editor
Requirement: Support Verva web design requirements ,[object Object],[object Object],[object Object],[object Object],[object Object],The web framework dream team , Slide  Copyright 2007, Callista Enterprise AB
Requirements: Agile Development environment ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB
Major Challenge: Re-use at Use-Case-level The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB Usecase  Process Service Data Service Business Value
How will Use-cases become components? The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB Demo
Use-cases as Components The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB Semantically equivalent to calling modal dialog in Swing! Composite Application «webcomp» :Edit Address Entry «webcomp» :NewCategory «webcomp» :AddressList 1: editAddressEntry(long) :entryId of new Entry 1.1: addNewCategory() :CategoryId 1.2: addNewCategory() :CategoryId
Web realization versus Rich Client ,[object Object],[object Object],The web framework dream team ,  Slide  Copyright 2008, Callista Enterprise AB Use-case logic Back-end services
Re-use in another composite application The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB
Adding portability… ,[object Object],[object Object],[object Object],The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB Portlet WebApp «webcomp» :Edit Address Entry
“ Remove” inherent web programming issues  The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB public class Game extends Element { private static Random randomNumbers = new Random(); public void processElement() { Template template = getHtmlTemplate(&quot;game&quot;); int answer = 0, guesses = 0, guess = -1; answer = randomNumbers.nextInt(101); while (guess != answer) { print(template); pause(); template.clear(); guess = getParameterInt(&quot;guess&quot;, -1); if (guess < 0 || guess > 100) { template.setBlock(&quot;warning&quot;, &quot;invalid&quot;); continue; } guesses++; if (answer < guess)  template.setBlock(&quot;msg&quot;, &quot;lower&quot;); else if (answer > guess) template.setBlock(&quot;msg&quot;, &quot;higher&quot;); } ContinuationContext.getActiveContext().removeContextTree(); template = getHtmlTemplate(&quot;success&quot;); template.setValue(&quot;answer&quot;, answer); template.setValue(&quot;guesses&quot;, guesses); print(template); } } 0. Get a random number between 0 and 100 1. Show the guess-form 2. Repeat until successful guess: 2.1. The user enters a value and submits the form 2.2. Validate the guess. I error (not between 0 and 100), continue at 2. 2.3. Unless successful guess, show whether the guess was under or above the answer. 2.4. Display guess-form. 3.0 Show congratulations screen with number of guesses.
Reduce semantic gap: Flow of events ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB
The resulting reference architecture The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB
Systemnivå: Komponenthierarki Web Framework Dream Team, Slide  Copyright 2008, Callista Enterprise AB : Entitetskomponent Resursskikt Verksamhetsskikt Komponenttjänst Anslutningsskikt : Entitetskomponent 1 Resursskikt Verksamhetsskikt Komponenttjänst Anslutningsskikt Integrationstjänst Webgränssnitt : Entitetskomponent Resursskikt Verksamhetsskikt Komponenttjänst Anslutningsskikt : Processkomponent 1 Resursskikt Verksamhetsskikt Komponenttjänst Anslutningsskikt Integrationstjänst Webgränssnitt
Logisk nivå (system-nivå): Beroenden vid återanvändning av web-dialog Web Framework Dream Team, Slide  Copyright 2008, Callista Enterprise AB : Entitetskomponent Resursskikt Verksamhetsskikt Komponenttjänst Anslutningsskikt : Entitetskomponent 1 Resursskikt Verksamhetsskikt Komponenttjänst Anslutningsskikt Integrationstjänst Webgränssnitt : Entitetskomponent Resursskikt Verksamhetsskikt Komponenttjänst Anslutningsskikt : Processkomponent 1 Resursskikt Verksamhetsskikt Komponenttjänst Anslutningsskikt Integrationstjänst Webgränssnitt
Design-nivå: Beroenden vid återanvändning av web-komposit The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB Hierakiskt beroende i systemmodellen
Logisk nivå (system-nivå): Beroenden vid återanvändning av komponenttjänst Web Framework Dream Team, Slide  Copyright 2008, Callista Enterprise AB : Entitetskomponent Resursskikt Verksamhetsskikt Komponenttjänst Anslutningsskikt : Entitetskomponent 2 Resursskikt Verksamhetsskikt Komponenttjänst Anslutningsskikt Integrationstjänst Webgränssnitt : Entitetskomponent Resursskikt Verksamhetsskikt Komponenttjänst Anslutningsskikt : Processkomponent 2 Resursskikt Verksamhetsskikt Komponenttjänst Anslutningsskikt Integrationstjänst Webgränssnitt
Design-nivå: Beroenden vid återanvändning av service-komposit The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB Hierakiskt beroende i systemmodellen
Dynamic view (runtime perspective) The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB Business Component 1 Business Component 2 Composite Application <webcomp> Address List <webcomp> Add Category <webcomp> Address Entry
Selected frameworks ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB
Anatomy of a web use-case component (web composite) The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB Presentation Use-case logic Back-end integration Input / output parameters Context for use-case component instance state «webcomp» :Category
Anatomy of a web use-case component (web composite) The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB Presentation Use-case logic Back-end integration Input / output parameters Context for use-case component instance state Spring WebFlow: category-flow.xml «webcomp» :Category
WebFlow – Sample – AddressEntryComposite Open ESB, Slide  Copyright 2007, Callista Enterprise AB «action» getNewOrExistingAddressEntity start «view» editAddressEntry «action» save «subflow» enterNewCategory «action» assignNewCategory exit «flow» «flow» «flow» ok «flow» cancel «flow» «flow» cancel add category
Anatomy of a web use-case component (web composite) The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB Presentation Use-case logic Back-end integration Input / output parameters Context for use-case component instance state Facelets: Category.xhtml «webcomp» :Category
Facelets– Sample – Category Composite ,[object Object],[object Object],[object Object],The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB <h:commandLink action=“viewAddressEntryAction” ..>
Anatomy of a web use-case component (web composite) The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB Presentation Use-case logic Back-end integration Input / output parameters Context for use-case component instance state Java: CategoryFlowSupport.java Façade per use-case component. Additional model beans  when required «webcomp» :Category
Use-case façade The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB
But what about JSF? ,[object Object],[object Object],[object Object],The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB <?xml version=&quot;1.0&quot;?> <!DOCTYPE faces-config PUBLIC &quot;-//Sun Microsystems, Inc.//DTD JavaServer Faces Config 1.0//EN&quot; &quot;http://java.sun.com/dtd/web-facesconfig_1_0.dtd&quot;> <faces-config> <application> <navigation-handler> org.springframework.webflow.executor.jsf.FlowNavigationHandler </navigation-handler> <variable-resolver> org.springframework.webflow.executor.jsf.DelegatingFlowVariableResolver </variable-resolver> <view-handler>com.sun.facelets.FaceletViewHandler</view-handler> </application> <lifecycle> <phase-listener> org.springframework.webflow.executor.jsf.FlowPhaseListener </phase-listener> </lifecycle> </faces-config>JSF
Environments ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Web Framework Dream Team, Slide  Copyright 2008, Callista Enterprise AB
Lessons learned ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB
Summary Re-usable Use-case Components Delivered! The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB Usecase  Process Service Data Service Business Value  … by the dream team: Spring WebFlow, Facelets, JSF, a reference architecture and some glue
Time (?) for Questions! The web framework dream team , Slide  Copyright 2008, Callista Enterprise AB

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The Web Framework Dream Team

  • 1. The web framework dream team Johan Eltes [email_address] www.callistaenterprise.se
  • 2.
  • 3. Strategic drivers behind reference architecture The web framework dream team , Slide Copyright 2008, Callista Enterprise AB … National IT strategi for healthcare Regional strategi Regional projects IT architecture Portal framework
  • 4. IT Architecture for VGRegion Healthcare Core Healthcare interop infrastructure Legacy EPR 1 Legacy EPR 2 Internal log Internal log … Internal Workflow Internal Workflow Gradual adoption of legacy healthcare systems Unified Information View (portal) EPR My Tasks SOAPlatform Alarming and logging Portal framework People Directory Internal roles database LabProcess Internal roles database Adapters Adapters Workflow Engine YP Legacy Lab System Internal log Internal Workflow Internal roles database Adapters Taxonomy services New business process support (composite apps), utilizing service enabled back-ends Native Services
  • 5. Layered View Back-end enterprise resources Canonical (Enterprise) Services Composite Applications Business Model Workflow Presentation Composite Services Local development. Put together a development framework! SOA Platform COTS and semi-COTS
  • 6. Requirement: “Use-Case-as-service” The web framework dream team , Slide Copyright 2008, Callista Enterprise AB Usecase Process Service Data Service Business Value
  • 7. Requirement: Portability The web framework dream team , Slide Copyright 2008, Callista Enterprise AB Container portability (Java EE) Portability across Web app and Portlet Web-app Portlet
  • 8. Requirement: Web designer friendly templating technology The web framework dream team , Slide Copyright 2008, Callista Enterprise AB NetWeaver Design in DreamWeaver Development in XML editor
  • 9.
  • 10.
  • 11. Major Challenge: Re-use at Use-Case-level The web framework dream team , Slide Copyright 2008, Callista Enterprise AB Usecase Process Service Data Service Business Value
  • 12. How will Use-cases become components? The web framework dream team , Slide Copyright 2008, Callista Enterprise AB Demo
  • 13. Use-cases as Components The web framework dream team , Slide Copyright 2008, Callista Enterprise AB Semantically equivalent to calling modal dialog in Swing! Composite Application «webcomp» :Edit Address Entry «webcomp» :NewCategory «webcomp» :AddressList 1: editAddressEntry(long) :entryId of new Entry 1.1: addNewCategory() :CategoryId 1.2: addNewCategory() :CategoryId
  • 14.
  • 15. Re-use in another composite application The web framework dream team , Slide Copyright 2008, Callista Enterprise AB
  • 16.
  • 17. “ Remove” inherent web programming issues The web framework dream team , Slide Copyright 2008, Callista Enterprise AB public class Game extends Element { private static Random randomNumbers = new Random(); public void processElement() { Template template = getHtmlTemplate(&quot;game&quot;); int answer = 0, guesses = 0, guess = -1; answer = randomNumbers.nextInt(101); while (guess != answer) { print(template); pause(); template.clear(); guess = getParameterInt(&quot;guess&quot;, -1); if (guess < 0 || guess > 100) { template.setBlock(&quot;warning&quot;, &quot;invalid&quot;); continue; } guesses++; if (answer < guess) template.setBlock(&quot;msg&quot;, &quot;lower&quot;); else if (answer > guess) template.setBlock(&quot;msg&quot;, &quot;higher&quot;); } ContinuationContext.getActiveContext().removeContextTree(); template = getHtmlTemplate(&quot;success&quot;); template.setValue(&quot;answer&quot;, answer); template.setValue(&quot;guesses&quot;, guesses); print(template); } } 0. Get a random number between 0 and 100 1. Show the guess-form 2. Repeat until successful guess: 2.1. The user enters a value and submits the form 2.2. Validate the guess. I error (not between 0 and 100), continue at 2. 2.3. Unless successful guess, show whether the guess was under or above the answer. 2.4. Display guess-form. 3.0 Show congratulations screen with number of guesses.
  • 18.
  • 19. The resulting reference architecture The web framework dream team , Slide Copyright 2008, Callista Enterprise AB
  • 20. Systemnivå: Komponenthierarki Web Framework Dream Team, Slide Copyright 2008, Callista Enterprise AB : Entitetskomponent Resursskikt Verksamhetsskikt Komponenttjänst Anslutningsskikt : Entitetskomponent 1 Resursskikt Verksamhetsskikt Komponenttjänst Anslutningsskikt Integrationstjänst Webgränssnitt : Entitetskomponent Resursskikt Verksamhetsskikt Komponenttjänst Anslutningsskikt : Processkomponent 1 Resursskikt Verksamhetsskikt Komponenttjänst Anslutningsskikt Integrationstjänst Webgränssnitt
  • 21. Logisk nivå (system-nivå): Beroenden vid återanvändning av web-dialog Web Framework Dream Team, Slide Copyright 2008, Callista Enterprise AB : Entitetskomponent Resursskikt Verksamhetsskikt Komponenttjänst Anslutningsskikt : Entitetskomponent 1 Resursskikt Verksamhetsskikt Komponenttjänst Anslutningsskikt Integrationstjänst Webgränssnitt : Entitetskomponent Resursskikt Verksamhetsskikt Komponenttjänst Anslutningsskikt : Processkomponent 1 Resursskikt Verksamhetsskikt Komponenttjänst Anslutningsskikt Integrationstjänst Webgränssnitt
  • 22. Design-nivå: Beroenden vid återanvändning av web-komposit The web framework dream team , Slide Copyright 2008, Callista Enterprise AB Hierakiskt beroende i systemmodellen
  • 23. Logisk nivå (system-nivå): Beroenden vid återanvändning av komponenttjänst Web Framework Dream Team, Slide Copyright 2008, Callista Enterprise AB : Entitetskomponent Resursskikt Verksamhetsskikt Komponenttjänst Anslutningsskikt : Entitetskomponent 2 Resursskikt Verksamhetsskikt Komponenttjänst Anslutningsskikt Integrationstjänst Webgränssnitt : Entitetskomponent Resursskikt Verksamhetsskikt Komponenttjänst Anslutningsskikt : Processkomponent 2 Resursskikt Verksamhetsskikt Komponenttjänst Anslutningsskikt Integrationstjänst Webgränssnitt
  • 24. Design-nivå: Beroenden vid återanvändning av service-komposit The web framework dream team , Slide Copyright 2008, Callista Enterprise AB Hierakiskt beroende i systemmodellen
  • 25. Dynamic view (runtime perspective) The web framework dream team , Slide Copyright 2008, Callista Enterprise AB Business Component 1 Business Component 2 Composite Application <webcomp> Address List <webcomp> Add Category <webcomp> Address Entry
  • 26.
  • 27. Anatomy of a web use-case component (web composite) The web framework dream team , Slide Copyright 2008, Callista Enterprise AB Presentation Use-case logic Back-end integration Input / output parameters Context for use-case component instance state «webcomp» :Category
  • 28. Anatomy of a web use-case component (web composite) The web framework dream team , Slide Copyright 2008, Callista Enterprise AB Presentation Use-case logic Back-end integration Input / output parameters Context for use-case component instance state Spring WebFlow: category-flow.xml «webcomp» :Category
  • 29. WebFlow – Sample – AddressEntryComposite Open ESB, Slide Copyright 2007, Callista Enterprise AB «action» getNewOrExistingAddressEntity start «view» editAddressEntry «action» save «subflow» enterNewCategory «action» assignNewCategory exit «flow» «flow» «flow» ok «flow» cancel «flow» «flow» cancel add category
  • 30. Anatomy of a web use-case component (web composite) The web framework dream team , Slide Copyright 2008, Callista Enterprise AB Presentation Use-case logic Back-end integration Input / output parameters Context for use-case component instance state Facelets: Category.xhtml «webcomp» :Category
  • 31.
  • 32. Anatomy of a web use-case component (web composite) The web framework dream team , Slide Copyright 2008, Callista Enterprise AB Presentation Use-case logic Back-end integration Input / output parameters Context for use-case component instance state Java: CategoryFlowSupport.java Façade per use-case component. Additional model beans when required «webcomp» :Category
  • 33. Use-case façade The web framework dream team , Slide Copyright 2008, Callista Enterprise AB
  • 34.
  • 35.
  • 36.
  • 37. Summary Re-usable Use-case Components Delivered! The web framework dream team , Slide Copyright 2008, Callista Enterprise AB Usecase Process Service Data Service Business Value … by the dream team: Spring WebFlow, Facelets, JSF, a reference architecture and some glue
  • 38. Time (?) for Questions! The web framework dream team , Slide Copyright 2008, Callista Enterprise AB