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https://issues.apache.org/jira/browse/WICKET-2476?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dominik Drzewiecki updated WICKET-2476:
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Summary: SpringBean annotated fields are not reinjected when the same
instance of the component is being reused. (was: SprinBean annotated fields
are not reinjected when the same instance of the component is being reused.)
> SpringBean annotated fields are not reinjected when the same instance of the
> component is being reused.
> -------------------------------------------------------------------------------------------------------
>
> Key: WICKET-2476
> URL: https://issues.apache.org/jira/browse/WICKET-2476
> Project: Wicket
> Issue Type: Improvement
> Components: wicket-spring
> Affects Versions: 1.4.1
> Reporter: Dominik Drzewiecki
> Fix For: 1.4.2
>
>
> SpringBean annotated components' fields get injected on instantiation only
> (well, that's when the IComponentInstantiationListener implementations are
> supposed kick in), while they are left as-is on subsequent reusage of the
> same component (e.g. when Page instance is retrieved from the pageMap rather
> than being instantiated). This behavior leads to the wrong instances of beans
> being available as reused components injected fields whenever the scope of
> the bean is declared as "prototype" or "request" (or some other scope
> narrower than "session"). A glimpse at the wicket guts led me to the
> hypothesis that this problem might be solved by additionally implementing
> IComponentOnBeforeRenderListener and registering it using
> addPreComponentOnBeforeRenderListener(). How about:
> package org.apache.wicket.injection;
> public class ComponentInjector implements IComponentInstantiationListener,
> IComponentOnBeforeRenderListener
> {
> public void onInstantiation(Component component) {
> getInjector().inject(component);
> }
> .....
> public void onBeforeRender(Component component) {
> getInjector().inject(component);
> }
> }
> and then in Application's init()
> ComponentInjector injector = new SpringComponentInjector(this);
> addComponentInstantiationListener(injector);
> addPreComponentOnBeforeRenderListener(injector);
> My initial observations prove that the injector.inject() should also
> correctly address the case whenever the instance had already been injected
> with the proxy (otherwise field.get(object) call fails)
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