Page History

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This is an improvement in Wicket 7.0 which should not affect any application migrating from Wicket 6.x. But if you use Servlet 3.0's AsyncContext in IResource in Wicket 7 then make sure that your code flushes the http response after completing the request.

API changes

Changes to org.apache.wicket.ajax.json.*  Image AddedWICKET-6287 - Switch from json.org to open-json RESOLVED

Because of license issues all classes in the mentioned package have been replaced by classes of open-json (https://github.com/tdunning/open-json) which means that the basic functionality is nearly the same. Some classes however (example: org.json.HTTP) are throwing WicketRuntimeExceptions because there is no corresponding implementation in open-json, yet. json.org can be used in this case (can be found in the central maven repository) if the license conditions are accepted.

DecimalConverters' number format WICKET-5853 WICKET-5861

org.apache.wicket.util.convert.converter.AbstractDecimalConverter's #getNumberFormat() and #setNumberFormat() has been removed in favour of #newNumberFormat(). Applications using the old methods should override the new one, where they configure specifics or preserve a reference to the created NumberFormat.

org/apache/wicket/core/util/io/SerializableChecker is replaced with org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream WICKET-4817

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The old API returned Iterable<? extends HeaderItem> and was inconvenient to override and add additional dependencies.
With the new API it is as easy as:

@Override
public List<HeaderItem> getDependencies() {
  List<HeaderItem> dependencies = super.getDependencies();
  dependencies.add(dep1);
  dependencies.add(dep2);
  return dependencies;
}

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To use AjaxFormValidatingBehavior in Wicket 6.x the application code should do something like:

AjaxFormValidatingBehavior.addToAllFormComponents(form, "keydown", Duration.ONE_SECOND);

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The behavior has been reworked a bit to allow this. The new usage is:

form.add(new AjaxFormValidatingBehavior("keydown", Duration.ONE_SECOND);

or

formComponent.add(new AjaxFormValidatingBehavior("keydown", Duration.ONE_SECOND);

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To migrate it you should do something like:

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@Override
protected String getInputType()
{
	return "sometype";
}
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to

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@Override
protected String[] getInputTypes()
{
	return new String[] { "sometype" };
}
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Note: MountMapper and its related classes are still available in 7.x but deprecated and not used by Wicket itself. They will be completely removed in Wicket 8.0.0

Renamed all *AjaxResponse classes to *PartialPageUpdate WICKET-5929

XmlAjaxResponse was renamed to XmlPartialPageUpdate (see git commit 7c40e4dafa75973bf99b34567d977f310a5f02d0) 

AuthenticatedWebApplication#onUnauthorizedPage WICKET-5490

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Rename PageSettings#recreateMountedPagesAfterExpiry to #recreateBookmarkablePagesAfterExpiry WICKET-5829

Rename IStaticCacheableResource#getCacheableResourceStream() to #getResourceStream() WICKET-5909

Behavior changes

org.apache.wicket.request.Url#getQueryString WICKET-4664

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