State of Apache Wicket

Transcription

1 State of Apache Wicket

2 presented at: ELOPERSDEV ENTER DEV powered by Topicus

3 sponsored by topicus

4

5 We continue to see teams run into trouble using JSF -- JavaServer Faces -- and are recommending you avoid this technology. ThoughtWorks Technology Radar January 2014 Wicket Developers Rejoice!! Our archenemy has been denounced!! Or is there more to this story?!

6 We continue to see teams run into trouble using JSF -- JavaServer Faces -- and are recommending you avoid this technology. Teams seem to choose JSF because it is a J2EE standard without really evaluating whether the programming model suits them. We think JSF is flawed because it tries to abstract away HTML, CSS and HTTP, exactly the reverse of what modern web frameworks do. JSF, like ASP.NET webforms, attempts to create statefulness on top of the stateless protocol HTTP and ends up causing a whole host of problems involving shared server-side state. We are aware of the improvements in JSF 2.0, but think the model is fundamentally broken. We recommend teams use simple frameworks and embrace and understand web technologies including HTTP, HTML and CSS. The full quote from ThoughtWorks Technology Radar. The good bits are on the next slide... ThoughtWorks Technology Radar January 2014

7 We continue to see teams run into trouble using JSF and are recommending you avoid this technology. We think JSF is flawed because it tries to abstract away HTML, CSS and HTTP. JSF, like ASP.NET webforms, attempts to create statefulness on top of the stateless protocol HTTP. We think the model is fundamentally broken. ThoughtWorks Technology Radar January 2014 This is not a critique of JSF in particular but (server side) component frameworks. The grunt of the critique is that JSF attempts to create state fullness on top of the stateless protocol which is precisely what JSF,.Net, Wicket and Tapestry are doing.

8 We recommend teams use simple frameworks and embrace and understand web technologies including HTTP, HTML and CSS. ThoughtWorks Technology Radar January 2014 I don t agree with this assessment:! server side, state managing frameworks were created to provide a solution for problems that are difficult to solve with simple frameworks.! Going back to 2004 is not the solution!

9 A typical screen in one of our page multi-tenant SaaS applications.! Would a simple framework make it possible to maintain 3 of these 1M lines of code applications with just 30 developers?

10 10 years of Apache Wicket

11 2004

12 2004 Wicket is presented to the world.! Raise your hand if you still read TheServerside.com?!

13 2004 The Server Side

14 2004 The original Wicket website. We have seen The Server Side several different stylings over the years...

15 codehaus.org The Server Side

16 codehaus.org The Server Side in in p tu e e m t e k ic The first W. s e c ffi o s u ic p o T e th t a r Devente

17 codehaus.org The Server Side

18 JSF Wicket Tapestry codehaus.org The Server Side Struts 2 (originally Webwork) The web framework sh oot-out at JavaOne Now th at was fun! Shale

19 codehaus.org The Server Side JavaOne

20 codehaus.org 1.0 The Server Side JavaOne

21 codehaus.org The Server Side JavaOne

22 codehaus.org The Server Side JavaOne

23 2007

24 2007 Wicket joins! The Apache Software Foundation!

25 2007 n i s p u t e e m t e k One of 3 Wic é j r A y b d e s i n a g r Amsterdam o ) S M C o p p i H ( n h Ca

26 2007

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36 State of Apache Wicket

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39 1. core 2. extensions 3. spring 4. datetime 5. auth-roles

40 Mailinglist traffic

41 Commit activity Wicket in Action Wicket Cookbook

42 Commit activity Wicket in Action Wicket Cookbook book writing has caused quite a dent in our Wicket related activities:! burn-out plays a major part.

43 In a Nutshell, Wicket... Ohloh report for Wicket

44 In a Nutshell, Wicket... has had 17,645 commits made by 52 contributors representing 314,959 lines of code Ohloh report for Wicket

45 In a Nutshell, Wicket... has had 17,645 commits made by 52 contributors representing 314,959 lines of code is mostly written in Java with a well-commented source code Ohloh report for Wicket

46 In a Nutshell, Wicket... has had 17,645 commits made by 52 contributors representing 314,959 lines of code is mostly written in Java with a well-commented source code has a well established, mature codebase maintained by a large development team with stable Y-O-Y commits Ohloh report for Wicket

47 In a Nutshell, Wicket... has had 17,645 commits made by 52 contributors representing 314,959 lines of code is mostly written in Java with a well-commented source code has a well established, mature codebase maintained by a large development team with stable Y-O-Y commits took an estimated 83 years of effort (COCOMO model) starting with its first commit in September, 2004 ending with its most recent commit 2 days ago Ohloh report for Wicket

48 Wicket 1.4 security fixes only

49 Wicket 1.5 security fixes only

50 Wicket 6 continues to be released along side Wicket 7, monthlies will transform into bi-monthlies when number of resolved tickets subsides.

51 Java 6

52 semantic versioning Works wonderful for us. Only snag: JQuery updates.

53 Monthly releases also wonderful: no longer waiting for a long time for a fixed bug.

54 Wicket 7 not much to say about Wicket 7: no major API changes.

55 Java 7

56 Servlet 3

57 Minor API breaks

58 Wicket 8 Anything written here is just speculation from my side. This is not set in stone, this is not how we are going to implement things, or quite reasonably at all.

59 Java 8

60 PROJECT LAMBDA functional programming in Java

61 @FunctionalInterface public interface ILinkListener { void onlickclicked(); }

62 ILinkListener l = new ILinkListener() public void onlinkclicked() { System.out.println("Klik"); } }

63 ILinkListener l = () -> { } System.out.println("Klik");

64 ILinkListener l = new ILinkListener() public void onlinkclicked() { System.out.println("Klik"); } } -of-! ILinkListener l = () -> { System.out.println("Klik"); }

65 add(new Link<Void>("save") public void onclick() { dao.save(object); getsession().info("saved."); setresponsepage(new OtherPage()) } });

66 add(new Link<Void>("save") public void onclick() { dao.save(object); getsession().info("saved."); setresponsepage(new OtherPage()) } });

67 add(new Link<>("save").onClick(()-> { dao.save(object); getsession().info("saved."); setresponsepage(new OtherPage()); });

68 private void onsave() { dao.save(object); getsession().info("saved."); setresponsepage(new OtherPage()) }!!!!!!

69 private void onsave() { dao.save(object); getsession().info("saved."); setresponsepage(new OtherPage()) }!! add(new Link<Void>("save").onClick(this::onSave);!!

70 A link with onclick, visibility and body

71 add(new Link<Void>("like") public void onclick() { person.likedby(me); public boolean isvisible() { return person.isnotliked(); } }.setbody(new AbstractReadOnlyModel<String>() public String getobject() { StringBuilder sb = new StringBuilder("Like "); sb.append(person.getfirstname()); return sb.tostring(); } }));

72 add(new Link<Void>("like") public void onclick() { person.likedby(me); public boolean isvisible() { return person.isnotliked(); } }.setbody(new AbstractReadOnlyModel<String>() public String getobject() { StringBuilder sb = new StringBuilder("Like "); sb.append(person.getfirstname()); return sb.tostring(); } }));

73 add(new Link<Void>("like") public void onclick() { person.likedby(me); public boolean isvisible() { return person.isnotliked(); } }.setbody(new AbstractReadOnlyModel<String>() public String getobject() { StringBuilder sb = new StringBuilder("Like "); sb.append(person.getfirstname()); return sb.tostring(); } }));

74 add(new Link<Void>("like") public void onclick() { person.likedby(me); public boolean isvisible() { return person.isnotliked(); } }.setbody(new AbstractReadOnlyModel<String>() public String getobject() { StringBuilder sb = new StringBuilder("Like "); sb.append(person.getfirstname()); return sb.tostring(); } }));

75 add(new Link<Void>("like") public void onclick() { person.likedby(me); public boolean isvisible() { return person.isnotliked(); } }.setbody(new AbstractReadOnlyModel<String>() public String getobject() { StringBuilder sb = new StringBuilder("Like "); sb.append(person.getfirstname()); return sb.tostring(); } }));

76 add(new Link<Void>("like") public void onclick() { person.likedby(me); public boolean isvisible() { return person.isnotliked(); } }.setbody(new AbstractReadOnlyModel<String>() public String getobject() { StringBuilder sb = new StringBuilder("Like "); sb.append(person.getfirstname()); return sb.tostring(); } }));

77 add(new Link<Void>("like") public void onclick() { person.likedby(me); public boolean isvisible() { return person.isnotliked(); } }.setbody(new AbstractReadOnlyModel<String>() public String getobject() { StringBuilder sb = new StringBuilder("Like "); sb.append(person.getfirstname()); return sb.tostring(); } }));

78 A link with onclick, visibility and body

79 add(new Link<>("like").visible(() -> person.isnotliked()).onclick(() -> person.likedby(me)).body(() -> { StringBuilder sb = new StringBuilder("L sb.append(person.getfirstname()); return sb.tostring(); }) );

80 add(new Link<>("like").visible(() -> person.isnotliked()).onclick(() -> person.likedby(me)).body(() -> { StringBuilder sb = new StringBuilder("L sb.append(person.getfirstname()); return sb.tostring(); }) );

81 add(new Link<>("like").visible(() -> person.isnotliked()).onclick(() -> person.likedby(me)).body(() -> { StringBuilder sb = new StringBuilder("L sb.append(person.getfirstname()); return sb.tostring(); }) );

82 add(new Link<>("like").visible(() -> person.isnotliked()).onclick(() -> person.likedby(me)).body(() -> { StringBuilder sb = new StringBuilder("L sb.append(person.getfirstname()); return sb.tostring(); }) );

83 add(new Link<>("like").visible(() -> person.isnotliked()).onclick(() -> person.likedby(me)).body(() -> { StringBuilder sb = new StringBuilder("L sb.append(person.getfirstname()); return sb.tostring(); }) );

84 add(new Link<>("like").visible(() -> person.isnotliked()).onclick(() -> person.likedby(me)).body(() -> { StringBuilder sb = new StringBuilder("L sb.append(person.getfirstname()); return sb.tostring(); }) );

85 add(new Link<Void>("like") public void onclick() { person.likedby(me); public boolean isvisible() { return person.isnotliked(); } }.setbody(new AbstractReadOnlyModel<String>() public String getobject() { StringBuilder sb = new StringBuilder("Like "); sb.append(person.getfirstname()); return sb.tostring(); } })); add(new Link<>("like").visible(() -> person.isnotliked()).onclick(() -> person.likedby(me)).body(() -> { StringBuilder sb = new StringBuilder("L sb.append(person.getfirstname()); return sb.tostring(); }) );! Anon inner classes: 17 lines Java 8 lambdas: 9 lines

86 nashorn

87 JavaScript validation

88 ScriptEngineManager m = new ScriptEngineManager();! ScriptEngine nashorn = m.getenginebyname("nashorn");! nashorn.put("age", validatable.getvalue()); String js = "age >= 18";! try { Object result = nashorn.eval(js); if(!((boolean)result) { ValidationError e = new ValidationError(); validatable.error(e); } } catch(exception e) { }

89 ScriptEngineManager m = new ScriptEngineManager();! ScriptEngine nashorn = m.getenginebyname("nashorn");! nashorn.put("age", validatable.getvalue()); String js = "age >= 18";! try { Object result = nashorn.eval(js); if(!((boolean)result) { ValidationError e = new ValidationError(); validatable.error(e); } } catch(exception e) { }

90 ScriptEngineManager m = new ScriptEngineManager();! ScriptEngine nashorn = m.getenginebyname("nashorn");! nashorn.put("age", validatable.getvalue()); String js = "age >= 18";! try { Object result = nashorn.eval(js); if(!((boolean)result) { ValidationError e = new ValidationError(); validatable.error(e); } } catch(exception e) { }

91 ScriptEngineManager m = new ScriptEngineManager();! ScriptEngine nashorn = m.getenginebyname("nashorn");! nashorn.put("age", validatable.getvalue()); String js = "age >= 18";! try { Object result = nashorn.eval(js); if(!((boolean)result) { ValidationError e = new ValidationError(); validatable.error(e); } } catch(exception e) { }

92 ScriptEngineManager m = new ScriptEngineManager();! ScriptEngine nashorn = m.getenginebyname("nashorn");! nashorn.put("age", validatable.getvalue()); String js = "age >= 18";! Object result = nashorn.eval(js); try { if(!((boolean)result) { ValidationError e = new ValidationError(); validatable.error(e); } } catch(exception e) { }

93 ScriptEngineManager m = new ScriptEngineManager();! ScriptEngine nashorn = m.getenginebyname("nashorn");! nashorn.put("age", validatable.getvalue()); String js = "age >= 18";! Object result = nashorn.eval(js); if(!((boolean)result) { ValidationError e = new ValidationError(); validatable.error(e); } try { } catch(exception e) { }

94 ScriptEngineManager m = new ScriptEngineManager();! ScriptEngine nashorn = m.getenginebyname("nashorn");! nashorn.put("age", validatable.getvalue()); String js = "age >= 18";! try { Object result = nashorn.eval(js); if(!((boolean)result) { ValidationError e = new ValidationError(); validatable.error(e); } } catch (Exception e) { }

95 ScriptEngineManager m =! ScriptEngine nashorn = m.getenginebyname(! nashorn.put( String js =! try Object result = nashorn.eval(js); } } } This was only a proof-of-concept. This probably won t ever fly due to business entities residing on server, and difficult to share those in browser, including I18N messages. ValidationError e = new ValidationError() validatable.error(e);

96 java.time support for this will be for converters, validations and possibly wicket-datetime

97 Roadmap Anything written here is just speculation from my side. This is not set in stone. Dates are mere guidelines.

98 Monthly releases

99 2014 feb mar may jun M1 7.0-M

100 2015 feb mar may jun M1 8.0-M

101 git organization

102 master wicket-1.0.x wicket-1.1.x wicket-1.2.x wicket-1.3.x wicket-1.4.x wicket-1.5.x wicket-6.x! Current organisation of our repository: master is new development, rest is maintenance.

103 master wicket-1.0.x wicket-1.1.x wicket-1.2.x wicket-1.3.x wicket-1.4.x wicket-1.5.x wicket-6.x! wicket 7.x! Current organisation of our repository: master is new development, rest is maintenance.

104 master wicket-1.0.x wicket-1.1.x wicket-1.2.x wicket-1.3.x wicket-1.4.x wicket-1.5.x wicket-6.x wicket-7.x wicket-8.x proposed layout: no more master, but just product branches.

105 experimental modules Jay! Many experimental modules have been upgraded to core modules! beanvalidation, CDI-1.1, web sockets will be part of Wicket core from 6.14 and onwards.

106 org.apache.wicket.experimental.wicket-6.x wicket-atmosphere wicket-bootstrap wicket-new-examples! org.apache.wicket.experimental.wicket-7.x Remaining wicket-atmosphere experimental modules wicket-cdi-1.1

107 org.apache.wicket.experimental.wicket-6.x wicket-atmosphere wicket-bootstrap wicket-new-examples! No more bootstrap: bootstrap is org.apache.wicket.experimental.wicket-7.x just a resource reference to wicket-atmosphere JavaScript and CSS. Write your wicket-cdi-1.1 own (~10 lines of code) or use L0rdn1kk0n s bootstrap wicket component library. new examples: no time to do anything useful with them.

108 Wicket 6.x Wicket 7.x org.apache.wicket.experimental.wicket-6.x wicket-atmosphere!! org.apache.wicket.experimental.wicket-7.x wicket-atmosphere! How to separate the same experimental modules in multiple product lines?

109 Wicket 6.x Wicket 7.x org.apache.wicket.experimental.wicket-6.x wicket-atmosphere!! org.apache.wicket.experimental.wicket-7.x wicket-atmosphere! Make the groupid specific to the product line, keep code as similar as possible.

110 The state of Apache Wicket:

111 The state of Apache Wicket: HEALTHY

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