Tapestry 5: Java Power, Scripting Ease

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Overview of Tapestry 5 given at ApacheCon 2009 in Oakland, CA.

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Tapestry 5: Java Power, Scripting Ease

  1. 1. Tapestry 5: Java Power, Scripting Ease! Howard M. Lewis Ship TWD Consulting hlship@comcast.net 1 © 2009 Howard M. Lewis Ship
  2. 2. Howard Lewis Ship • Creator, Apache Tapestry • Author, "Tapestry in Action" • Independent Consultant 2 © 2009 Howard M. Lewis Ship
  3. 3. What is Tapestry? 3 © 2009 Howard M. Lewis Ship
  4. 4. Java 4 © 2009 Howard M. Lewis Ship
  5. 5. Open Source 5 © 2009 Howard M. Lewis Ship
  6. 6. Component Based 6 © 2009 Howard M. Lewis Ship
  7. 7. Developer Focused 7 © 2009 Howard M. Lewis Ship
  8. 8. Concise 8 © 2009 Howard M. Lewis Ship
  9. 9. Fast! 9 © 2009 Howard M. Lewis Ship
  10. 10. Mature 10 © 2009 Howard M. Lewis Ship
  11. 11. Tapestry Elements 11 © 2009 Howard M. Lewis Ship
  12. 12. Tapestry Templates Login.tml <html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_1_0.xsd"> <body> <h1>Please Login</h1> Login <t:form> <t:label for="userId"/> <t:textfield value="userId"/> <br/> form <t:label for="password"/> <t:passwordfield value="password"/> <br/> label <input type="submit" value="Login"/> </t:form> </html> textfield label passwordfield 12 © 2009 Howard M. Lewis Ship
  13. 13. Page Classes Login.tml <html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_1_0.xsd"> <body> <h1>Please Login</h1> Login.java <t:form> <t:label for="userId"/> public class Login <t:textfield value="userId"/> { <br/> @Property <t:label for="password"/> private String userId; <t:passwordfield value="password"/> <br/> @Property <input type="submit" value="Login"/> private String password; </t:form> </html> Object onSuccess() { … } } 13 © 2009 Howard M. Lewis Ship
  14. 14. Page Flows Login.java UserProfile.java public class Login public class UserProfile { { @Property … private String userId; } @Property private String password; void onValidate() { … } Object onSuccess() { … return UserProfile.class; } } 14 © 2009 Howard M. Lewis Ship
  15. 15. Inversion of Control Login.java public class Login Your code { @Property private String userId; @Property private String password; … Inject IoC @Inject Service private Session session; into field @CommitAfter Object onSuccess() { … User user = (User) session. … user.setLastLogin(new Date()); } } return UserProfile.class; Tapestry Services 15 © 2009 Howard M. Lewis Ship
  16. 16. Meta-Programming Login.java public class Login Generate getter & setter { @Property private String userId; @Property private String password; @InjectPage private UserProfile userProfilePage; … @Inject private Session session; Commit Hibernate transaction @CommitAfter Object onSuccess() { … User user = (User) session. … user.setLastLogin(new Date()); return userProfilePage; } } 16 © 2009 Howard M. Lewis Ship
  17. 17. State Management UserProfile.java public class UserProfile { Shared global value (any page) @Property @SessionState This page only private UserEntity user; @Property @Persist private Date searchStart; } 17 © 2009 Howard M. Lewis Ship
  18. 18. Template Injections Component Meta- Java Class Programming Message Catalog 18 © 2009 Howard M. Lewis Ship
  19. 19. ❝Most software today is very much like an Egyptian pyramid with millions of bricks piled on top of each other, with no structural integrity, but just done by brute force and thousands of slaves.❞ Alan Kay, co-designer of the Smalltalk programming language 19 © 2009 Howard M. Lewis Ship
  20. 20. Developer Productivity 20 © 2009 Howard M. Lewis Ship
  21. 21. 21 © 2009 Howard M. Lewis Ship
  22. 22. Non-Tapestry Exception Reporting 22 © 2009 Howard M. Lewis Ship
  23. 23. Index does not contain a property named 'now' Available properties: class, componentResources, currentTime 23 © 2009 Howard M. Lewis Ship
  24. 24. 24 © 2009 Howard M. Lewis Ship
  25. 25. 25 © 2009 Howard M. Lewis Ship
  26. 26. Scaffolding 26 © 2009 Howard M. Lewis Ship
  27. 27. BoardGame.java @Entity public class BoardGame { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) @NonVisual private long id; @Validate("required") private String title; private String creator; private String publisher; private Date published; private boolean inPrint; @Validate("required") @Column(nullable = false) private Genre genre; @Validate("required") @Column(nullable = false) private Theme theme; @Validate("min=1") private Integer minPlayers; @Validate("min=1") private Integer maxPlayers; @Validate("min=1,max=5") private Integer rating; @DataType("longtext") private String notes; 27 © 2009 Howard M. Lewis Ship
  28. 28. 28 © 2009 Howard M. Lewis Ship
  29. 29. Parameters Property Types BeanEditForm Naming Conventions Annotations Explicit Overrides Localized Messages 29 © 2009 Howard M. Lewis Ship
  30. 30. Feedback & Exploration 30 © 2009 Howard M. Lewis Ship
  31. 31. Flow 31 © 2009 Howard M. Lewis Ship
  32. 32. ❝PHP and Rails have taught us that development speed is more important than we thought it was ... you really don’t understand a feature till you’ve built it, so the faster you can build them the faster you understand them.❞ Tim Bray, Director of Web Technologies, Sun Microsystems 32 © 2009 Howard M. Lewis Ship
  33. 33. Internationalization 33 © 2009 Howard M. Lewis Ship
  34. 34. 34 © 2009 Howard M. Lewis Ship
  35. 35. Index_de.properties page-title=Erstellen Sie eine neue Brettspiel add-game=Spiel hinzufŸgen modern=Modernen Index.tml medieval=Mittelalter bible=Bibel <html t:type="layout" title="message:page-title" abstract=Zusammenfassung xmlns:t="http://tapestry.apache.org/schema/tapestry_5_1_0.xsd" xmlns:p="tapestry:parameter"> war_game=Kriegsspiel card=Karte <t:beaneditform submitlabel="message:add-game" object="game"/> role_playing=Rollenspiele </html> cooperative=Genossenschaft creator-label=Schšpfer publisher-label=Verlag published-label=Veršffentlicht inprint-label=Im Druck theme-label=Thema minplayers-label=Mindest-Spieler maxplayers-label=Maximale Spieler notes-label=Notation 35 © 2009 Howard M. Lewis Ship
  36. 36. Tapestry Components 36 © 2009 Howard M. Lewis Ship
  37. 37. Nested Components Layout title : String Layout.tml pageNames : List pageName : String <html xmlns="http://www.w3.org/1999/xhtml" xmlns:t="http://tapestry.apache.org/schema/tapestry_5_1_0.xsd" xmlns:p="tapestry:parameter"> <head> <title>${title}</title> </head> <body> … <div id="menu"> <ul> <li t:type="loop" source="pageNames" value="pageName" class="prop:classForPageName"> <t:pagelink page="prop:pageName">${pageName}</t:pagelink> Index </li> </ul> </div> Layout … Loop PageLink 37 © 2009 Howard M. Lewis Ship
  38. 38. Component Parameters Layout.java public class Layout { /** The page title, for the <title> element and the <h1> element. */ @Property @Parameter(required = true, defaultPrefix = BindingConstants.LITERAL) private String title; @Property @Parameter(defaultPrefix = BindingConstants.LITERAL) private String sidebarTitle; @Property @Parameter(defaultPrefix = BindingConstants.LITERAL) private Block sidebar; @Property private String pageName; 38 © 2009 Howard M. Lewis Ship
  39. 39. Non-Template Components OutputDate.java public class OutputDate { private final DateFormat formatter = DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.MEDIUM); @Parameter(required = true, allowNull = false) private Date date; void beginRender(MarkupWriter writer) { writer.write(formatter.format(date)); } } 39 © 2009 Howard M. Lewis Ship
  40. 40. 40 © 2009 Howard M. Lewis Ship
  41. 41. Tapestry Performance 41 © 2009 Howard M. Lewis Ship
  42. 42. Request Processing Speed 42 © 2009 Howard M. Lewis Ship
  43. 43. Java == Fast 43 © 2009 Howard M. Lewis Ship
  44. 44. No Reflection 44 © 2009 Howard M. Lewis Ship
  45. 45. Page Pooling 45 © 2009 Howard M. Lewis Ship
  46. 46. GZIP Compression 46 © 2009 Howard M. Lewis Ship
  47. 47. Scalability 47 © 2009 Howard M. Lewis Ship
  48. 48. JavaScript Aggregation 48 © 2009 Howard M. Lewis Ship
  49. 49. Far Future Expires Header 49 © 2009 Howard M. Lewis Ship
  50. 50. Versioned URLs 50 © 2009 Howard M. Lewis Ship
  51. 51. Content Delivery Network 51 © 2009 Howard M. Lewis Ship
  52. 52. ❝Architecture is the decisions that you wish you could get right early in a project.❞ Martin Fowler, Chief Scientist, ThoughtWorks 52 © 2009 Howard M. Lewis Ship
  53. 53. Conclusion 53 © 2009 Howard M. Lewis Ship
  54. 54. 54 © 2009 Howard M. Lewis Ship
  55. 55. Infrastructure 55 © 2009 Howard M. Lewis Ship
  56. 56. Performance 56 © 2009 Howard M. Lewis Ship
  57. 57. Tapestry: The Expert is Built In 57 © 2009 Howard M. Lewis Ship
  58. 58. Tapestry 5 In Production 58 © 2009 Howard M. Lewis Ship
  59. 59. http://tapestry.apache.org 59 © 2009 Howard M. Lewis Ship
  60. 60. http://tapestry.formos.com 60 © 2009 Howard M. Lewis Ship
  61. 61. http://howardlewisship.com Tapestry 5 Development and Support On-site / Hands-on Tapestry Training hlship@comcast.net 61 © 2009 Howard M. Lewis Ship
  62. 62. Image Credits © 2006 Chris Walton http://www.flickr.com/photos/philocrites/245011706/ © 2009 Nataline Fung http://www.flickr.com/photos/metaphora/3384569933/ © 2006 Martino Sabia http://www.flickr.com/photos/ezu/297634534/ © 2008 Alan Grinberg http://www.flickr.com/photos/agrinberg/2465119180/ © 2008 Manu Gómez http://www.flickr.com/photos/manugomi/2884678938/ © 2006 Tom Magliery http://www.flickr.com/photos/mag3737/267638148/ © 2003 A. Lipson http://www.andrewlipson.com/escher/relativity.html © 2009 viernest http://www.flickr.com/photos/viernest/3380560365/ © 2007 Jojo Cence http://www.flickr.com/photos/jojocence/1372693375/ © 2007 Patrick Dirden http://www.flickr.com/photos/sp8254/2052236004/ © 2009 Dani Ihtatho http://www.flickr.com/photos/ihtatho/627226315/ 62 © 2009 Howard M. Lewis Ship
  63. 63. Image Credits © 2008 Christophe Delaere http://www.flickr.com/photos/delaere/2514143242/ © 2007 Marina Campos Vinhal http://www.flickr.com/photos/marinacvinhal/379111290/ © 2006 kris247 http://www.flickr.com/photos/kris247/86924080/ 63 © 2009 Howard M. Lewis Ship

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