Guice, Groovy, #Canonical and inheritance not playing nicely together - groovy

Question

I have the following Groovy classes:
enum Protocol {
File,
Ftp,
Sftp,
Http,
Https
}
#Canonical
abstract class Endpoint {
String name
Protocol protocol
}
#Canonical
#TupleConstructor(includeFields=true, includeSuperFields=true)
class LocalEndpoint extends Endpoint {
}
class MyAppModule extends AbstractModule {
#Override
protected void configure() {
// Lots of stuff...
}
// Lots of other custom providers
#Provides
Endpoint providesEndpoint() {
new LocalEndpoint('fileystem', Protocol.File)
}
}
Don't worry about why I'm using a custom provider for the Endpoint instead of just:
bind(Endpoint).toInstance(new LocalEndpoint('fileystem', Protocol.File))
I'm 99.999% sure that's outside of this problem and is coded that way because of how the full (very large) code is wired.
My problem is that Guice and/or Groovy cannot find a constructor for LocalEndpoint that takes a String and Protocol argument:
1) Error in custom provider, groovy.lang.GroovyRuntimeException: Could not find matching constructor for: com.example.myapp.model.LocalEndpoint(java.lang.String, com.example.myapp.model.Protocol)
at com.example.myapp.inject.MyAppModule.providesEndpoint(MyAppModule.groovy:130)
while locating com.example.myapp.model.Endpoint
for parameter 2 at com.example.myapp.inject.MyAppModule.providesConfig(MyAppModule.groovy:98)
at com.example.myapp.inject.MyAppModule.providesConfig(MyAppModule.groovy:98)
while locating com.example.myapp.config.MyAppConfig
It then spits out a large stack trace with the following listed as the cause:
Caused by: groovy.lang.GroovyRuntimeException: Could not find matching constructor for: com.example.myapp.model.LocalEndpoint(java.lang.String, com.example.myapp.model.Protocol)
at groovy.lang.MetaClassImpl.invokeConstructor(MetaClassImpl.java:1731)
at groovy.lang.MetaClassImpl.invokeConstructor(MetaClassImpl.java:1534)
Hopefully this is something that I can tweak by modifying Endpoint and/or LocalEndpoint, perhaps I need to pass some special parameters into the #Canonical/#TupleConstructor annotations or something. Any ideas?

Answer 1

I think you need to add includeSuperProperties in the TupleConstructor annotation, and that seems to resolve it, even by itself:
#TupleConstructor(includeSuperProperties=true)
So the whole thing would be:
#Canonical
abstract class Endpoint {
String name
Protocol protocol
}
#Canonical // You may not need this anymore
#TupleConstructor(includeSuperProperties=true)
class LocalEndpoint extends Endpoint {
}