THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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RequestCycle#find(Class<T>) returns java.util.Optional
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Code calling RequestCycle#find(Class<T>) has to check whether a matching IRequestHandler is found. This is now enforced by returning an Optional<T>:
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getComponent().getRequestCycle().find(AjaxRequestTarget.class).ifPresent(target -> target.add(this)); |
| Warning | ||
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During migration you should check your old code for places where the AjaxRequestCycle (now an Optional<AjaxRequestTarget>) is compared with null: |
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if (cycle.find(AjaxRequestTarget.class) == null) {
// this is *never* executed since #find() always returns an Optional
}
if (cycle.find(AjaxRequestTarget.class) != null) {
// this is *always* executed since #find() always returns an Optional
} |
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