Download - Wicket 10 years and beyond
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Apache Wicket10 years and beyond
Martijn Dashorsttopicus onderwijs @dashorst
APACHE WICKET
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a brief history of Wicket
the current stateof Wicket
the futureof Wicket
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co-author
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10 year contributor to Wicket
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started in 2004 at topicuswithout any knowledge of web programming
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before Wicketat topicus
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2004
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using maverick velocity hibernate jasperreports
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lots of XML configuration
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1 change requires N files to be modified(for large values of N)
<command name="admin.tabelbeheer.edittoetsonderdeel"> <controller class="nl.topicus.bao.web.ctrl.lab.toetsen. <view name="success" path="/admin/tabelbeheer/toetsen/e <transform path="/mlayout/mainlayout.vm"> <param name="_pagetitle" value="Beheer Tabellen </transform> </view> <view name="error" path="/admin/tabelbeheer/toetsen/edi <transform path="/mlayout/mainlayout.vm"> <param name="_pagetitle" value="Beheer Tabellen </transform> </view> <view name="list" path="admin.tabelbeheer.edittoets.m" </command>
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high learning curve
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no back button support no multi-tab support
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HTTP Session dumping ground
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little to no reuse
</tr>#if($model.bean.absentieRegels.empty) <tr> <td colspan="19" class="border-r">#formname('groep.absent' </tr> #else#set($columnIndexes=[1,2,3,4,5,6,7,8,9,10])#foreach($row in $model.bean.absentieRegels) <tr> <td class="columnvalue">$arrayTool.elementAt($row, 0)</td #foreach($index in $columnIndexes) #set($melding=$arrayTool.elementAt($row, $index))
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complex UI neigh impossible
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a framework that makes reuse possible, minimises configuration, server side state management easy and is as type safe as possible
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Action Framework Anvil Apache Click Apache MyFaces Apache Shale Apache Sling Apache Struts Apache Struts 2 Apache Tapestry Apache Turbine Apache Wicket AppFuse Aranea Web Framework AribaWeb Aurora Baritus Barracuda Bento Bishop Brill Calyxo Cameleon Canyamo Caramba Cassandra Chiba Chrysalis Dinamica Dovetail DWR Echo Eclipse RAP Expresso fleXive Flower framework Folium FormEngine Genie Grails GWT Hamlets Helma Induction ItsNat Jacquard Jaffa Japple JAT JATO JBanana JBoss Seam Jeenius JFormular JOSSO JPublish JSPWidget Jspx-bay jStatemachine Jucas JVx JWAA JWarp jWic jZeno jZonic Macaw Makumba Maverick Melati Mentawai Millstone Nacho Niggle OpenEmcee OpenLaszlo OpenXava Oracle ADF OXF Pandora Playframework Pustefix Restlet RIFE Roma Meta Framework RSF Scope SerfJ Shocks Smile SOFIA Sombrero Spark Spring MVC Strecks Stripes Swinglets SwingWeb Tapestry TeaServlet ThinWire Trimpath Junction Turbine Vaadin Verge VRaptor Vroom Warfare Wavemaker WebObjects WebOnSwing WebWork wingS Xoplon Ze Framework ZK ztemplates
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120+ java web frameworks
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18 August 2004
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public class EditPage extends WebPage { private Person person; public EditPage(Person person) { this.person = person; add(new Button("save") { @Override public void onSubmit() { Entities.save(person); setResponsePage(new ShowPage(person)); } }); }}
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a framework that makes reuse possible, minimises configuration, server side state management easy and is as type safe as possible
✓ ✓
✓✓
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Action Framework Anvil Apache Click Apache MyFaces Apache Shale Apache Sling Apache Struts Apache Struts 2 Apache Tapestry Apache Turbine Apache Wicket AppFuse Aranea Web Framework AribaWeb Aurora Baritus Barracuda Bento Bishop Brill Calyxo Cameleon Canyamo Caramba Cassandra Chiba Chrysalis Dinamica Dovetail DWR Echo Eclipse RAP Expresso fleXive Flower framework Folium FormEngine Genie Grails GWT Hamlets Helma Induction ItsNat Jacquard Jaffa Japple JAT JATO JBanana JBoss Seam Jeenius JFormular JOSSO JPublish JSPWidget Jspx-bay jStatemachine Jucas JVx JWAA JWarp jWic jZeno jZonic Macaw Makumba Maverick Melati Mentawai Millstone Nacho Niggle OpenEmcee OpenLaszlo OpenXava Oracle ADF OXF Pandora Playframework Pustefix Restlet RIFE Roma Meta Framework RSF Scope SerfJ Shocks Smile SOFIA Sombrero Spark Spring MVC Strecks Stripes Swinglets SwingWeb Tapestry TeaServlet ThinWire Trimpath Junction Turbine Vaadin Verge VRaptor Vroom Warfare Wavemaker WebObjects WebOnSwing WebWork wingS Xoplon Ze Framework ZK ztemplates
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Action Framework Anvil Apache Click Apache MyFaces Apache Shale Apache Sling Apache Struts Apache Struts 2 Apache Tapestry Apache Turbine Apache Wicket AppFuse Aranea Web Framework AribaWeb Aurora Baritus Barracuda Bento Bishop Brill Calyxo Cameleon Canyamo Caramba Cassandra Chiba Chrysalis Dinamica Dovetail DWR Echo Eclipse RAP Expresso fleXive Flower framework Folium FormEngine Genie Grails GWT Hamlets Helma Induction ItsNat Jacquard Jaffa Japple JAT JATO JBanana JBoss Seam Jeenius JFormular JOSSO JPublish JSPWidget Jspx-bay jStatemachine Jucas JVx JWAA JWarp jWic jZeno jZonic Macaw Makumba Maverick Melati Mentawai Millstone Nacho Niggle OpenEmcee OpenLaszlo OpenXava Oracle ADF OXF Pandora Playframework Pustefix Restlet RIFE Roma Meta Framework RSF Scope SerfJ Shocks Smile SOFIA Sombrero Spark Spring MVC Strecks Stripes Swinglets SwingWeb Tapestry TeaServlet ThinWire Trimpath Junction Turbine Vaadin Verge VRaptor Vroom Warfare Wavemaker WebObjects WebOnSwing WebWork wingS Xoplon Ze Framework ZK ztemplates
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15 java web frameworks alivei.e. made any release in the last year
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including Wicket!
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What is Wicket?
Apache Wicket From Wikipedia, the free encyclopedia
Apache Wicket, commonly referred to as
Wicket, is a lightweight component-based web
application framework for the Java programming
language conceptually similar to JavaServer
Faces and Tapestry. It was originally written by
Jonathan Locke in April 2004. Version 1.0 was
released in June 2005. It graduated into an
Apache top-level project in June 2007.[2]
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A brief history of Wicket
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2004
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2004
The Server Side
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20052004
codehaus.org
The Server Side
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20052004
codehaus.org
The Server Side
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codehaus.org
2004
The Server Side JavaOne
1.0
1.1
2006
1.2
2005
AJAX
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2007
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2007
1.3
2008
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2007
1.3
2008 2009
1.4
2010 2011
1.5
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2007
1.3
2008 2009
1.4
2010 2011
1.5
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2012
6.0
2013 2014
6.12
6.2
6.4
6.6
6.8
6.10
6.1 6.5 6.96.11
6.13
7.0.0-M2
6.16
6.14
6.15 7.0.0-M1
6.3 6.76.17 7.0.0-M3
7.0.0-M4
6.18
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That's of Apache Wicket!
10 years
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The state of Wicket
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1. core
2. extensions
3. spring
4. datetime
5. auth-roles
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Mailinglist traffic
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Commit activity
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Meanwhile at devoxx...
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User Manual
195
25 Wicket Internals
25.1 Page storingDuring request handling, Wicket manages page instances through interface
. This interface creates a new page instance ororg.apache.wicket.request.handler.IPageProviderloads a previously serialized page instance if we provide the corrisponding page id. delegatesIPageProviderpage creation and retrieval to interface . When pageorg.apache.wicket.request.mapper.IPageSourceclass is provided delegates page creation to interface ,IPageSource org.apache.wicket.IPageFactorywhile when page id is provided it uses interface to load theorg.apache.wicket.page.IPageManagerpreviously serialized page.
The following workflow diagram summarizes the mechanism seen so far:
IPageManager
's task is to manage which pages have been used in a requestorg.apache.wicket.page.IPageManagerand store their last state in the backing stores, namely . The default implementation IPageStore
collects all stateful pages which have been used in theorg.apache.wicket.page.PageStoreManagerrequest cycle (more than one page can be used in a single request if for example or setResponsePage()
is used). At the end of the request all collected page instances are being storedRestartResponseExceptionin the first level cache - http session. They are stored in http session attribute named
and passed to the underlying "wicket:persistentPageManagerData-APPLICATION_NAME" IPageStore. When the next http request comes will ask for page with specific id and IPageProvider PageStoreManagerwill look first in the http session and if no match is found then it will delegate to the IPageStore. At the end of thesecond request the http session based cache is being overwritten completely with the newly used pageinstances.
To se tup ano ther imp lementa t ion use IPageManager. Theorg.apache.wicket.Application.setPageManagerProvider(IPageManagerProvider)
custom implementation may or may not use .IPageManager IPageStore/IDataStore
IPageStore
's role is to mediate the storing and loading of pages done byorg.apache.wicket.pageStore.IPageStorethe under ly ing . The defaul t implementat ion IDataStore
pre-processes the pages before passing them to org.apache.wicket.pageStore.DefaultPageStore
183
As you can see above, the Exception gets raised during the initialization of the instance evenWicketTesterbefore the actual test method gets executed. Even though we have applied rather cool and simple annotationbased test configuration already described and passed in perfectly well prepared ApplicationContext instance tothe WicketTester instance in the constructor, somewhere down the rabbit hole someone complained that noWebApplicationContext instance could have been found which seems to be required in order to initialize theWicketTester properly.
The problem that we run against here is due to the fact that SpringComponentInjector during its own initializationis trying to get hold of an according Spring's ApplicationContext instance that would normally be there in aruntime environment but does not find any since we are running in a test environment currently.SpringComponentInjector delegates to Spring's own WebApplicationContextUtils class to retrieve the instance ofApplicationContext out of the ServletContext which is perfectly fine for a runtime environment but is unfortunatelyfailing in a test environment:
public WebApplicationContext getRequiredWebApplicationContext(ServletContext sc)static IllegalStateException {throws
WebApplicationContext wac = getWebApplicationContext(sc); (wac == ) {if null IllegalStateException(throw new "No WebApplicationContext found: no
);ContextLoaderListener registered?" } wac;return}
If you still remember we defined a ContextLoaderListener in our web.xml file as part of the configuration of ourruntime environment that makes sure an according WebApplicationContext instance gets initialized andregistered against the ServletContext properly. Luckily, this problem can easily be solved if we slightly changethe way we initialize SpringComponentInjector in our main MyWebApplication class. Apart from the constructorthat we have used so far, there is another constructor in the SpringComponentInjector class that expects thecaller to provide it with an according ApplicationContext instance rather than trying to resolve one on its own:
public SpringComponentInjector(WebApplication webapp, ApplicationContext ctx, wrapInProxies)boolean{ (webapp == )if null { IllegalArgumentException( );throw new "Argument [[webapp]] cannot be "null }
(ctx == )if null { IllegalArgumentException( );throw new "Argument [[ctx]] cannot be "null }
// store context in application's metadata … webapp.setMetaData(CONTEXT_KEY, ApplicationContextHolder(ctx));new
// … and create and register the annotation aware injector InjectorHolder.setInjector( AnnotSpringInjector( ContextLocator(),new new
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In a Nutshell, Wicket...
… has had 18,255 commits made by 62 contributors representing 318,037 lines of code
… is mostly written in Java witha 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 84 years of effort (COCOMO model) starting with its first commit in September, 2004ending with its most recent commit 1 days ago– openhub.net report for Wicket
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The future of Wicket ?
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Wicket 1.4security releases only
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Wicket 1.5security releases only
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Wicket 6
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java 6
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semantic versioning
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semi-monthly releases mainly bug fixes some new minor features
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Wicket 7
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Java 7
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Servlet 3
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Minor API breaks
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Component queuing
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public class HomePage extends WebPage {
public HomePage() {
add(new Label("title", "Hello!"));
} }
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public class HomePage extends WebPage {
public HomePage() {
add(new Label("title", "Hello!"));
} } <html>
<body> <h1 wicket:id="title"></h1> </body> </html>
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public class HomePage extends WebPage {
public HomePage() {
add(new Label("title", "Hello!"));
} } <html>
<body> <h1 wicket:id="title"></h1> </body> </html>
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Add a <div> around content...
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<html> <body> <div wicket:id="container">
<h1 wicket:id="title"></h1>
</div> </body> </html>
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<html> <body> <div wicket:id="container">
<h1 wicket:id="title"></h1>
</div> </body> </html>
public class HomePage extends WebPage { public HomePage() { add(new WebMarkupContainer("container")); add(new Label("title", "Hello!")); } }
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<html> <body> <div wicket:id="container">
<h1 wicket:id="title"></h1>
</div> </body> </html>
public class HomePage extends WebPage { public HomePage() { add(new WebMarkupContainer("container")); add(new Label("title", "Hello!")); } }
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code always follows markupin Wicket
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<html> <body> <div wicket:id="container"> <h1 wicket:id="title"></h1> </div> </body> </html>
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public class HomePage extends WebPage { public HomePage() { WebMarkupContainer container = new WebMarkupContainer("container"); add(container); add(new Label("title", "Hello!")); } }
<html> <body> <div wicket:id="container"> <h1 wicket:id="title"></h1> </div> </body> </html>
![Page 73: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/73.jpg)
public class HomePage extends WebPage { public HomePage() { WebMarkupContainer container = new WebMarkupContainer("container"); add(container); add(new Label("title", "Hello!")); } }
<html> <body> <div wicket:id="container"> <h1 wicket:id="title"></h1> </div> </body> </html>
![Page 74: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/74.jpg)
public class HomePage extends WebPage { public HomePage() { WebMarkupContainer container = new WebMarkupContainer("container"); add(container); container.add(new Label("title", "Hello!")); } }
<html> <body> <div wicket:id="container"> <h1 wicket:id="title"></h1> </div> </body> </html>
![Page 75: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/75.jpg)
code always follows markupin Wicket
or does it?
![Page 76: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/76.jpg)
Enter Component Queuing(coming to you in wicket 7)
![Page 77: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/77.jpg)
What if we delay adding components?
Queue components until their location in the markup hierarchy is know
markupContainer.add(new Label(...)); markupContainer.queue(new Label(...));
![Page 78: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/78.jpg)
public class HomePage extends WebPage { public HomePage() { WebMarkupContainer container = new WebMarkupContainer("container"); add(container); container.add(new Label("title", "Hello!")); }}
public class HomePage extends WebPage { public HomePage() { queue(new WebMarkupContainer("container")); queue(new Label("title", "Hello!")); }}
![Page 79: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/79.jpg)
<html> <body> <header><h1 wicket:id="title"></h1></header> <div wicket:id="container"> ... </div> </body> </html>
<html> <body> <div wicket:id="container"> <h1 wicket:id="title"></h1> </div> </body> </html>
![Page 80: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/80.jpg)
Limitations ofComponent Queuing
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queue(new Label("label", "Some text"));queue(new Label("label", "Other text"));
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queue(new Label("label", "Some text"));queue(new Label("label", "Other text"));
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queue(new Label("first"));queue(new Label("last"));WebMarkupContainer secure=new WebMarkupContainer("secure") { public void onConfigure() { super.onConfigure(); setVisible(isViewingOwnProfile()); }}; queue(secure);secure.queue(new Label("creditCardNumber"));secure.queue(new Label("creditCardExpiry"));
Restrictions of Queuing: Ancestors
![Page 84: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/84.jpg)
<h3> Welcome, <span wicket:id="first"></span> <span wicket:id="last"></span>!</h3><fieldset wicket:id="secure"> <legend>Secure</legend> <dt>Card expiry: <i wicket:id="creditCardExpiry"> <dt>Card number: <i wicket:id="creditCardNumber"></fieldset>
![Page 85: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/85.jpg)
<h3> Welcome, <span wicket:id="first"></span> <span wicket:id="last"></span>!</h3><fieldset wicket:id="secure"> <legend>Secure</legend> <dt>Card expiry: <i wicket:id="creditCardExpiry"> <dt>Card number: <i wicket:id="creditCardNumber"></fieldset>
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<h3> Welcome, <span wicket:id="first"></span> <span wicket:id="last"></span>!</h3><fieldset wicket:id="secure"> <legend>Secure</legend> <dt>Card expiry: <i wicket:id="creditCardExpiry"></fieldset> <dt>Card number: <i wicket:id="creditCardNumber">
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<h3> Welcome, <span wicket:id="first"></span> <span wicket:id="last"></span>!</h3><fieldset wicket:id="secure"> <legend>Secure</legend> <dt>Card expiry: <i wicket:id="creditCardExpiry"></fieldset> <dt>Card number: <i wicket:id="creditCardNumber">
![Page 88: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/88.jpg)
<fieldset wicket:id="secure"> <h3> Welcome, <span wicket:id="first"></span> <span wicket:id="last"></span>! </h3> <legend>Secure</legend> <dt>Card expiry: <i wicket:id="creditCardExpiry"> <dt>Card number: <i wicket:id="creditCardNumber"></fieldset>
![Page 89: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/89.jpg)
<fieldset wicket:id="secure"> <h3> Welcome, <span wicket:id="first"></span> <span wicket:id="last"></span>! </h3> <legend>Secure</legend> <dt>Card expiry: <i wicket:id="creditCardExpiry"> <dt>Card number: <i wicket:id="creditCardNumber"></fieldset>
![Page 90: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/90.jpg)
Component Queuing
• Wicket 7 feature
• Prefer queue() when markup hierarchy can be altered
• Uniqueness of Wicket IDs still requirement at same level of queuing
• Can move down into child markup hierarchy
• Can't move up the markup hierarchy
![Page 91: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/91.jpg)
Wicket 8
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Java 8
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PROJECT LAMBDA “functional” programming in Java
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public interface ILinkListener { void onLickClicked();}
ILinkListener l = new ILinkListener(){ @Override public void onLinkClicked() { System.out.println("Klik"); }}
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public interface ILinkListener { void onLickClicked();}
ILinkListener l = () -> { System.out.println("Klik"); }
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ILinkListener l = () -> { System.out.println("Klik"); }
ILinkListener l = new ILinkListener(){ @Override public void onLinkClicked() { System.out.println("Klik"); }}
or
![Page 97: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/97.jpg)
add(new Link<Void>("save") { @Override public void onClick() { dao.save(object); getSession().info("Saved."); setResponsePage(new OtherPage()) }});
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add(new Link<Void>("save") { @Override public void onClick() { dao.save(object); getSession().info("Saved."); setResponsePage(new OtherPage()) }});
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add(new Link<>("save").onClick(()-> { dao.save(object); getSession().info("Saved."); setResponsePage(new OtherPage())});
no more type information
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private void onSave() { dao.save(object); getSession().info("Saved."); setResponsePage(new OtherPage())}
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private void onSave() { dao.save(object); getSession().info("Saved."); setResponsePage(new OtherPage())}
add(new Link<Void>("save") .onClick(this::onSave));
![Page 102: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/102.jpg)
A link with onclick, visibility and body
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add(new Link<Void>("like"));
![Page 104: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/104.jpg)
add(new Link<Void>("like") {});
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add(new Link<Void>("like") { @Override public void onClick() { person.likedBy(me); }});
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add(new Link<Void>("like") { @Override public void onClick() { person.likedBy(me); } @Override public boolean isVisible() { return person.isNotLiked(); }});
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add(new Link<Void>("like") { @Override public void onClick() { person.likedBy(me); } @Override public boolean isVisible() { return person.isNotLiked(); }}.setBody());
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add(new Link<Void>("like") { @Override public void onClick() { person.likedBy(me); } @Override public boolean isVisible() { return person.isNotLiked(); }}.setBody(new AbstractReadOnlyModel<String>() { }));
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add(new Link<Void>("like") { @Override public void onClick() { person.likedBy(me); } @Override public boolean isVisible() { return person.isNotLiked(); }}.setBody(new AbstractReadOnlyModel<String>() { @Override public String getObject() { } }));
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add(new Link<Void>("like") { @Override public void onClick() { person.likedBy(me); } @Override public boolean isVisible() { return person.isNotLiked(); }}.setBody(new AbstractReadOnlyModel<String>() { @Override public String getObject() { StringBuilder sb = new StringBuilder("Like "); sb.append(person.getFirstName()); return sb.toString(); } }));
![Page 111: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/111.jpg)
A link with onclick, visibility and body
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add(new Link<>("like"));
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add(new Link<>("like") );
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add(new Link<>("like") .visible(() -> person.isNotLiked()));
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add(new Link<>("like") .visible(() -> person.isNotLiked()) .onClick(() -> person.likedBy(me)));
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add(new Link<>("like") .visible(() -> person.isNotLiked()) .onClick(() -> person.likedBy(me)) .body(() -> { }));
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add(new Link<>("like") .visible(() -> person.isNotLiked()) .onClick(() -> person.likedBy(me)) .body(() -> { StringBuilder sb = new StringBuilder("Like "); sb.append(person.getFirstName()); return sb.toString(); }));
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add(new Link<>("like") .visible(() -> person.isNotLiked()) .onClick(() -> person.likedBy(me)) .body(() -> { StringBuilder sb = new StringBuilder("Like "); sb.append(person.getFirstName()); return sb.toString(); }));
add(new Link<Void>("like") { @Override public void onClick() { person.likedBy(me); } @Override public boolean isVisible() { return person.isNotLiked(); }}.setBody(new AbstractReadOnlyModel<String>() { @Override public String getObject() { StringBuilder sb = new StringBuilder("Like "); sb.append(person.getFirstName()); return sb.toString(); } }));
Anon inner classes: 17 lines Java 8 lambdas: 9 lines
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nashorn
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JavaScript validation
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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) { }
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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) { }
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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) { }
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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) { }
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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) { }
![Page 126: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/126.jpg)
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) { }
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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) { }
![Page 128: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/128.jpg)
java.time
![Page 129: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/129.jpg)
Schedule
![Page 130: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/130.jpg)
6.14 6.15
7.0-M17.0-M2
7.0-M4
6.18
feb mar nov
2014
7.0-RC
6.19
jan
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7.0? 7.1?
8.0-M1?
7.5?
feb mar may
2015
8.0-M2?
7.6?
jun
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Is there a future for server-side frameworks?
![Page 133: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/133.jpg)
0%
25%
50%
75%
100%R
EST+
Java
Scrip
t
Sprin
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Java
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t lib
rary
JSF+
Java
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ils
Apac
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Web
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ets+
Java
Scrip
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kaH
TTP
ZK fr
amew
ork
Oth
er
![Page 134: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/134.jpg)
JavaScript Frameworks War
JQuery AngularJS Ember.js React
Backbone.js Meteor KnockoutJS Dojo
Agility.js CanJS Polymer Mithril
Maria Flight Knockback.jsAmpersand
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What is the Future for web development?
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What is the Future for web development?
Web Components
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What is the Future for web development?
Web Components
PolymerAngularJS(2.0)
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What is the Future of Wicket?
![Page 139: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/139.jpg)
No Revolution but Evolution
![Page 140: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/140.jpg)
a brief history of Wicket
the current stateof Wicket
the futureof Wicket
Summary
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thank you
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Questions?
![Page 143: Wicket 10 years and beyond](https://reader033.vdocument.in/reader033/viewer/2022052509/55a68ce91a28abad7d8b4640/html5/thumbnails/143.jpg)
contact @dashorst
topicus stand