I'm trying to use the AutoBean encoding so I can pass and parse types over
a websocket connection I have. However, there seem to be some bugs with
trying to encode AutoBeans on the server side.
I had a structure like
> public interface Foo {
> }
> public interface Bar {
> }
> public interface A<T extends Foo> {
> T getFoo();
> void setFoo(T foo);
> }
> public interface B extends A<Bar> {
> @Override Bar getFoo();
> @Override void setFoo(Bar foo);
> }
but that ended up getting an exception when the setter is called:
> java.lang.NullPointerException
> at
> com.google.web.bindery.autobean.vm.impl.MethodPropertyContext.traverse(MethodPropertyContext.java:102)
> at
> com.google.web.bindery.autobean.vm.impl.MethodPropertyContext.accept(MethodPropertyContext.java:75)
> at
> com.google.web.bindery.autobean.shared.impl.AutoBeanCodexImpl$PropertyCoderCreator.maybeCreateCoder(AutoBeanCodexImpl.java:353)
> at
> com.google.web.bindery.autobean.shared.impl.AutoBeanCodexImpl$PropertyCoderCreator.visitReferenceProperty(AutoBeanCodexImpl.java:341)
> at
> com.google.web.bindery.autobean.vm.impl.ProxyAutoBean.traverseProperties(ProxyAutoBean.java:324)
> at
> com.google.web.bindery.autobean.shared.impl.AbstractAutoBean.traverse(AbstractAutoBean.java:166)
> at
> com.google.web.bindery.autobean.shared.impl.AbstractAutoBean.accept(AbstractAutoBean.java:101)
> at
> com.google.web.bindery.autobean.shared.impl.AutoBeanCodexImpl.doCoderFor(AutoBeanCodexImpl.java:521)
> at
> com.google.web.bindery.autobean.shared.impl.AbstractAutoBean.setProperty(AbstractAutoBean.java:276)
> at
> com.google.web.bindery.autobean.vm.impl.ProxyAutoBean.setProperty(ProxyAutoBean.java:253)
> at
> com.google.web.bindery.autobean.vm.impl.BeanMethod$3.invoke(BeanMethod.java:103)
> at
> com.google.web.bindery.autobean.vm.impl.SimpleBeanHandler.invoke(SimpleBeanHandler.java:43)
So I switched it to:
> public interface A {
> Foo getFoo();
> }
> public interface B extends A {
> @Override Bar getFoo();
> @Override void setFoo(Bar foo);
> }
but that gets me:
> java.lang.RuntimeException: Could not parse payload
> at
> com.google.web.bindery.autobean.vm.impl.JsonSplittable.create(JsonSplittable.java:73)
> at
> com.google.web.bindery.autobean.shared.impl.StringQuoter.split(StringQuoter.java:73)
> at
> com.google.web.bindery.autobean.shared.AutoBeanCodex.encode(AutoBeanCodex.java:84)
> Caused by: org.json.JSONException: Duplicate key "foo"
> at org.json.JSONObject.putOnce(JSONObject.java:1076)
> at org.json.JSONObject.<init>(JSONObject.java:205)
> at org.json.JSONObject.<init>(JSONObject.java:402)
> at
> com.google.web.bindery.autobean.vm.impl.JsonSplittable.create(JsonSplittable.java:47)
> ... 12 more
I'm going to try it with just the super interfaces and no overriding, but
I'm not sure the client is going to reconstruct "foo" with the proper type.
I can maybe understand the first one not working since I know
RequestFactory and such are always picky about the use of generics also and
I've learned to be careful about that. But the second one seems to just be
it not paying attention to the override which seems like a problem that
should be fixed. On the server-side, I'm using AutoBeanFactorySource to
create the AutoBeanFactory, which I see is supposedly "experimental". I'm
then using AutoBeanCodex to do the encoding. Has anyone had success
encoding AutoBeans on the server-side?
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