ReflectiveMutableCommandProcessingAggregate no method found exceptions on find or loading aggregate with events

[jltnf54]

The following method fails to call apply on an subclass aggregate.

   @Override
  public T applyEvent(Event event) {
    try {
      getClass().getMethod("apply", event.getClass()).invoke(this, event);
    } catch (InvocationTargetException e) {
      throw new EventuateApplyEventFailedUnexpectedlyException(e.getCause());
    } catch (NoSuchMethodException e) {
      throw new MissingApplyMethodException(e, event);
    } catch (IllegalAccessException e) {
      throw new EventuateApplyEventFailedUnexpectedlyException(e);
    }
    return (T)this;
  }

NoSuchMethodException is thrown when you have:

public void apply(Myevent event) {}

when loading an aggregate or saving and aggregate with previous events.

[cer]

Please explain what you mean by "subclass aggregate"?
What are your hierarchies of aggregate and event classes?

[jltnf54]

Example:

class MyAgregate extends RefelectiveMutableCommandProcessingAggrgate

And

Interface MyEvent extends Event

[jltnf54]

It work fine on the initial aggregaterepository.save()

But loading

aggregaterepository.find(identifier)

It fails to retrieve the apply method on the aggregate and cannot be passed to apply(MyEvent) since the signatures do not match, when retrieving the events from eventuate local dB events table

[cer]

That's very strange. Are you using some tool/framework that manipulates class loaders, e.g. live reloading framework?

…

On Wed, Jun 27, 2018 at 11:59 AM, jltnf54 ***@***.***> wrote: It work fine on the initial aggregaterepository.save() But loading aggregaterepository.find(identifier) It fails to retrieve the apply method on the aggregate and cannot be passed to apply(MyEvent) since the signatures do not match, when retrieving the events from eventuate local dB events table — You are receiving this because you were assigned. Reply to this email directly, view it on GitHub <#10 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAPB2hvwxwjK5wpp4m3JV_aoxYDBsh0Jks5uA9YdgaJpZM4U6Mq9> .

-- Learn microservices - http://learn.microservices.io Microservices application platform http://eventuate.io Consulting and training http://chrisrichardson.net

[jltnf54]

no

[jltnf54]

i can send my maven dependencies.

[jltnf54]

I think i found the issue. It is spring boot dev tools

    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-devtools</artifactId>
      <optional>true</optional>
    </dependency>

once i removed this it works now

[cer]

I believe that Spring Boot DevTools does something with class loaders that results in a MethodNotFoundException.

…

On Wed, Jun 27, 2018 at 12:45 PM, jltnf54 ***@***.***> wrote: I think i found the issue. It is spring boot dev tools org.springframework.boot spring-boot-devtools true — You are receiving this because you were assigned. Reply to this email directly, view it on GitHub <#10 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAPB2gFxGnq1bKv70nsgaq0uRuKc4DOxks5uA-D1gaJpZM4U6Mq9> .

-- Learn microservices - http://learn.microservices.io Microservices application platform http://eventuate.io Consulting and training http://chrisrichardson.net