Hi,
your service method is return a TreeMap holding a lambda comparator:
Comparator.comparing(DataGroup::getName)
Either you make that comparator serializable (you can but you don't *need* to
use org.danekja as Wicket does it):
https://stackoverflow.com/questions/22807912/how-to-serialize-a-lambda
... or don't keep the result of your service method in the Wicket component
tree, e.g. by using a LoadableDetachableModel.
Have fun
Sven
Am 21.06.2018 um 13:26 schrieb m.xinu:
I manually create the Spring context, which is ClassPathXmlApplicationContext,
and pass it to Wicket application by calling
getComponentInstantiationListeners().add(new SpringComponentInjector(this,
MyApp.get().getApplicationContext())).
Then, In my panel I have this
private class ReportMenuPanel extends WPanel {
private static final long serialVersionUID = -9012565863392514416L;
@Inject
private IReportService reportService;
...
}
I also checked my code with @SpringBean and I got the same exception.
On Thursday, June 21, 2018, 3:30:29 PM GMT+4:30, Andrea Del Bene
<an.delb...@gmail.com> wrote:
I think you are keeping a reference to your Spring bean in a page or in a
component, that's why Wicket is trying to serialize it. Are you injecting
this bean with @SpringBean annotation?
On Thu, Jun 21, 2018 at 12:45 PM, m.xinu <mehdi_x...@yahoo.com.invalid>
wrote:
Thanks for your reply.
Both of your proposed solutions mean using other interfaces in the Lambda
expressions. However most of my Lambda definitions are in my Service tier
classes (Spring beans), and the Service tier must be independent from the
Web tier, and the force of Wicket serialization (even for the service
beans) breaks the aforementioned rule. Is there another solution? Is it
possible for Wicket not to serialize the Spring beans? or is there another
serialization mechanism in Wicket not based on Serializable interface?
On Thursday, June 21, 2018, 5:44:00 AM GMT+4:30, Maxim Solodovnik <
solomax...@gmail.com> wrote:
Wicket7:
https://github.com/wicketstuff/core/blob/wicket-
7.x/lambda-parent/lambda/src/main/java/org/wicketstuff/
lambda/SerializableBiConsumer.java
WBR, Maxim
(from mobile, sorry for the typos)
On Thu, Jun 21, 2018, 08:13 Maxim Solodovnik <solomax...@gmail.com> wrote:
https://cwiki.apache.org/confluence/display/WICKET/
Migration+to+Wicket+8.0#MigrationtoWicket8.0-
Provideserializableversionsofjava.util.function.(Supplier|
Consumer|Function|BiConsumer)ASFJIRA5aa69414-a9e9-3523-
82ec-879b028fb15bWICKET-5991
<https://cwiki.apache.org/confluence/display/WICKET/
Migration+to+Wicket+8.0#MigrationtoWicket8.0-
Provideserializableversionsofjava.util.function.(Supplier%
7CConsumer%7CFunction%7CBiConsumer)ASFJIRA5aa69414-a9e9-3523-82ec-
879b028fb15bWICKET-5991>
WBR, Maxim
(from mobile, sorry for the typos)
On Wed, Jun 20, 2018, 22:42 m.xinu <mehdi_x...@yahoo.com.invalid> wrote:
Hi,
I'm using Apache Wicket 7.9.0 alongside Spring 5.0.5.RELEASE. In one of
my beans, I call some stream API containing multiple lambda expressions.
During that page execution, I get following exception:
Caused by: java.io.NotSerializableException:
org.devocative.metis.service.data.ReportService$$Lambda$126/997816965
and it is very strange for me since it is in one of my beans not in any
Wicket-related part.
I've searched and I've found the Serializable casting solution, however
it results in a very complex syntax for my code. So is there any other
solution? Dose Wicket has a way for this type of serialization?
P.S: My block of code for stream:
reports.parallelStream()
.filter(report ->
externalAuthorizationService == null ||
externalAuthorizationService.authorizeReport(report, null,
currentUser.getUserId())
)
.flatMap(report -> report.getGroups().stream().map(dataGroup -> new
KeyValueVO<>(dataGroup, report)))
.collect(Collectors.groupingBy(
KeyValueVO::getKey,
() -> new TreeMap<>(Comparator.comparing(DataGroup::getName)),
Collectors.mapping(
KeyValueVO::getValue,
Collectors.toList()))
);
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