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Posted to commits@wicket.apache.org by "Kamil (JIRA)" <ji...@apache.org> on 2017/06/13 14:54:01 UTC
[jira] [Commented] (WICKET-6396) Model should provide other
Optional's methods
[ https://issues.apache.org/jira/browse/WICKET-6396?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16047985#comment-16047985 ]
Kamil commented on WICKET-6396:
-------------------------------
There are plenty of them...
for example:
{code}
public UserPage(PageParameters parameters) {
this.model = new Model<>();
StringValue id = parameters.get(PARAMETER_ID);
Optional.ofNullable(id.toOptionalString())
.filter(StringUtils::isNoneBlank)
.flatMap(userRepository::findById)
.ifPresent(model::setObject);
User user = model.orElseThrow(() -> new UserNotFountException());
//do something with user
}
{code}
Or something that you do many times
{code}
model.ifPresent(user -> user.setActive(false));
{code}
or
{code}
panel.setVisible(model.isPresent())
{code}
> Model should provide other Optional's methods
> ---------------------------------------------
>
> Key: WICKET-6396
> URL: https://issues.apache.org/jira/browse/WICKET-6396
> Project: Wicket
> Issue Type: Improvement
> Affects Versions: 8.0.0-M6
> Reporter: Kamil
> Priority: Minor
>
> Model should provide
> {code}
> public <X extends Throwable> T orElseThrow(Supplier<? extends X> exceptionSupplier) throws X;
> {code}
> {code}
> public boolean isPresent();
> {code}
> {code}
> public void ifPresent(Consumer<? super T> consumer);
> {code}
> methods for the sake of consistency with Optional API
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