Just tried to migrate from 2.2 to 2.4 RC1.
First, the project didn't compile because of internal compiler errors. All
obsolete RF-related stuff is removed from 2.4 (good), but if the project
uses RF there is no way to move to 2.4 without migrating from gwt to
web.bindery.
After migrating from gwt to web.bindery the internal compiler error
disappeared (good).
After fixing some incompatibilities the project now compiles and the
application starts (good).
But it fails to run in exactly the same spot as when moving from 2.2 to 2.3
without migration from gwt to web.bindery (bad). And in 2.2 the application
runs fine.
Here is the culprit:
interface P extends EntityProxy { ... }
interface PA extends P { ... }
interface PB extends P { ... }
interface R extends RequestContext {
Request<Long> queryCountOfP(P p);
}
When queryCountOfP() accepts an instance of PA, the onSuccess() callback is
called fine.
When queryCountOfP() accepts an instance of PB, the failure occurs:
java.lang.IllegalArgumentException: Unknown proxy type PB
The server receives the call, the argument type of the service method is
correct (B), but after returning to the client the following method throws
an exception:
at
com.google.web.bindery.requestfactory.shared.impl.AbstractRequestContext.createProxy(AbstractRequestContext.java:489)
Neither onSuccess() nor onFailure() nor onViolation() gets called.
Why does the method fails on PB but not on PA? Is there anything wrong with
this usage pattern?
Thanks!
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