Re: will there be a performance gain to use singleton to remove references to the service object in models?
Hi Jason,
You could have a look at http://code.google.com/p/salve/
By making use of some byte code instrumentation it will replace your
dependency injections by static lookups, i.e. the best of both worlds. I
wouldn't know about the performance of each approach however.
Regards,
Wilko
Jason Wang-2 wrote:
Hi all,
Although I am using spring-wicket to prevent the whole spring being
serialized, It still brothers me to see the references in the model
object, for example:
Instead of using this:
public class MyViewObjectProvider extends SortableDataProvider{
@SpringBean(daoService)
private DAOServices daoService;
private String objectID;
public Iterator iterator(final int first, final int count){
.
return daoService.load(objectId).subList(first,
first+count).iterator();
}
}
I always write a singleton helper class for the service to be used, so I
can have the model this way:
public class MyViewObjectProvider extends SortableDataProvider{
//so no reference to the dao service object
private String objectID;
public Iterator iterator(final int first, final int count){
.
//here the DAOServiceHelper.get() returns a instance that managed by
spring(with the actual service object injected.)
return DAOServiceHelper.get().load(objectId).subList(first,
first+count).iterator();
}
}
So my question is, will there be a noticeable performance gain to do it
the 2nd way?
The reason to ask is that the static kind of singleton usage is indeed
anti-spring, and makes
my eyes bleed
If no one has done a performance comparison, I might have to do one
myself. Just being lazy...
Thanks,
Jason Wang
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Re: AutoCompleteTextField and IE8, javascript error thrown
Hi Christian, Did you ever figure out what was wrong? I encountered the same problem. Best regards, Wilko Hische christian.fichera wrote: Dear all, I have a problem using AutoCompleteTextField: when I type something into it, the choices list is not shown, and the following javascript error is thrown: Webpage error details User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.04506.648) Timestamp: Thu, 28 May 2009 08:19:40 UTC Message: Invalid argument. Line: 253 Char: 1 Code: 0 URI: http://localhost:8080/TADinfo/analysis/resources/org.apache.wicket.extension s.ajax.markup.html.autocomplete.AutoCompleteBehavior/wicket-autocomplete.js This problem occurs only with IE8 (with IE7, IE6 and Firefox works), and Wicket 1.3.6 (with version 1.3.4 works). Can anybody help me? Thank you in advance! Here is the code: .. snip .. -- View this message in context: http://www.nabble.com/AutoCompleteTextField-and-IE8%2C-javascript-error-thrown-tp23757807p24585462.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Hello World Program is not working
Hi Gurvinder, Caused by: java.lang.ClassNotFoundException: org.apache.wicket.examples.helloworld.HelloWorldApplication I would suggest to play with http://wicket.apache.org/quickstart.html first Success, Wilko Gurvinder Pal Singh wrote: Hi, i created a project as mentioned in http://wicket.apache.org/examplehelloworld.html, and tried to run it on tomcat server. But it is giving me errors. Error Log from tomcat is shown below: 2008-01-29 11:33:54 StandardContext[/HelloWorld]: Exception starting filter HelloWorldApplication org.apache.wicket.WicketRuntimeException: Unable to create application of class org.apache.wicket.examples.helloworld.HelloWorldApplication . Caused by: java.lang.ClassNotFoundException: org.apache.wicket.examples.helloworld.HelloWorldApplication at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1428) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1274) at org.apache.wicket.protocol.http.ContextParamWebApplicationFactory.createApplication(ContextParamWebApplicationFactory.java:68) ... 45 more -- View this message in context: http://www.nabble.com/Hello-World-Program-is-not-working-tp15153342p15193213.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: wicket-datetime-rc2 javascript error in generated event.js
Answering myself. The problem does not occur anymore in yesterday's snapshot. Thanks to whoever fixed it, Wilko Hische -- View this message in context: http://www.nabble.com/wicket-datetime-rc2-javascript-error-in-generated-event.js-tp14438031p14457168.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
wicket-datetime-rc2 javascript error in generated event.js
Hello,
When in a wicket-rc2 Quickstart I try to use
org.apache.wicket.extensions.yui.calendar.DateField from wicket-datetime-rc2
I get an error messsage in FF and IE7 concerning event.js.
If I open the page for the first time:
nl is not defined
looking at the contents of event.js with firebug i only see
nl
(with nl being the only package at root level).
--
HomePage.java:
--
package nl.feeddex;
import org.apache.wicket.PageParameters;
import org.apache.wicket.extensions.yui.calendar.DateField;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.WebPage;
import org.apache.wicket.model.IModel;
public class HomePage extends WebPage {
private Date date;
public HomePage(final PageParameters parameters) {
Form form = new Form(form);
form.add( new DateField( testDate, new IModel(){
public Object getObject() {
return date;
}
public void setObject(Object object) {
date = (Date)object;
}
public void detach() {
}
}));
add( form );
add( new MyDummyPanel( panel ));
}
}
--
HomePage.html:
--
html
head
titleWicket Quickstart Archetype Homepage/title
/head
body
br/br/
form wicket:id=form
Date:
input type=submit value=Submit!/
/form
div wicket:id=panel/div
/body
/html
--
The panel i include because otherwise i get an exception(?):
WicketMessage: Unknown tag name with Wicket namespace: 'panel'. Might be you
haven't installed the appropriate resolver?
This is a blocker for us, should I make a bug report? I am afraid the
JavaScript is a bit too involved for me to be able to patch this myself on
short notice.
Best regards,
Wilko Hische
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Proper way to mount a shared resource
Hi,
This probably is a stupid question, but thusfar i couldn't figure it out.
I would like to mount a shared resource, but I don't know how to get/create
the correct resourceKey.
In a Quickstart for Wicket 1.3.0-rc1 i put the following init method in
WicketApplication:
@Override
protected void init() {
final String resourceName = myResource;
getSharedResources().add( resourceName, new Resource() {
@Override
public IResourceStream getResourceStream() {
return new StringResourceStream( Found! );
}
});
mountSharedResource(/resource, resourceName);
}
When requesting
http://localhost:8080/resource
in my browser the message
ERROR - haredResourceRequestTarget - shared resource myResource not found
appears in my log.
When i mount like this:
mountSharedResource(/resource, org.apache.wicket.Application/ +
resourceName);
the resource is correctly shown in the browser.
My question is, what is the proper way to get the resourcekey for this
resource?
Regards,
Wilko Hische
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Dynamically created popup window, IE7 wicket 1.3
Hi,
For a chat application I would like to display a list of chat requests that
have come in.
This list is updated by making use of an AbstractAjaxTimerBehavior.
When the user clicks a chat request in the list, a popup window will open
containing that particular chat conversation. In FF all works fine.
The unfortunate thing is that whatever I try, in IE7, the window containing
the list will become the active window whenever the timer fires, thus hiding
the popup window.
Even more strange:
- If the popup was started from a static (ie non dynamically updated)
element the popup doesn't lose focus.
- In wicket 1.2.6 it works fine.
I have been trying various approaches, for instance my own little Java
script creating the popup links, but for some reason I just can't get it to
work. I am willing to accept that is another IE7 feature , but that
doesn't help me much.
I am not really comfortable with Javascript, so before I dive into the
Javascript differences between Wicket version 1.2.6 and 1.3.x I would like
to ask whether somebody on this list might have some suggestions.
I have attached the Index.html and Index.java for the current 1.3 snapshot.
In 1.2.6 it works (mutatis mutandis).
Regards,
Wilko Hische
- org.apache.wicket.quickstart.Index.java
package org.apache.wicket.quickstart;
import java.util.Date;
import org.apache.wicket.PageParameters;
import org.apache.wicket.ajax.AbstractAjaxTimerBehavior;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.model.AbstractReadOnlyModel;
import org.apache.wicket.util.time.Duration;
/**
* Basic bookmarkable index page.
*
* NOTE: You can get session properties from QuickStartSession via
* getQuickStartSession()
*/
public class Index extends QuickStartPage {
/**
* Constructor that is invoked when page is invoked without a session.
*
* @param parameters
*Page parameters
*/
public Index(final PageParameters parameters)
{
WebMarkupContainer timer = new WebMarkupContainer(timer);
timer.setOutputMarkupId(true);
final Label timeLabel = new Label( time, new
AbstractReadOnlyModel(){
public Object getObject() {
return new Date().toString();
}
});
timeLabel.setOutputMarkupId(true);
timer.add(timeLabel );
timer.add(
new
AbstractAjaxTimerBehavior(Duration.seconds(2)) {
protected void
onTimer(AjaxRequestTarget target) {
target.addComponent(timeLabel);
target.appendJavascript(
addPopupLinkIfNotExists());
}
}
);
add( timer );
}
}
- org.apache.wicket.quickstart.Index.html
html
head
titleQuickStart/title
script type=text/javascript
function openPopup(e) {
window.open( 'http://wicket.apache.org' );
}
function addPopupLinkIfNotExists() {
var e = document.getElementById( 'popup' );
if (e != null) {
return;
}
var parent = document.getElementById( 'links' );
var link = document.createElement('a');
link.setAttribute( 'id', 'popup' );
link.setAttribute( 'href', '#' );
if (link.addEventListener){
link.addEventListener('click', openPopup, false);
}
else {
link.attachEvent('onclick', openPopup );
}
link.appendChild(document.createTextNode(Dynamic popup));
parent.appendChild( link );
}
/script
/head
body
h1QuickStart/h1
p wicket:id=timerLast refresh: /p
p
# A stable link
/p
p id=links
/p
/body
/html
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