Hi
I´m using Guice with Wicket and i´m quite happy with it. Now I have a
problem with the IOC, and i think, i´d need some help there :)
I have a service-class X
public class X{
@Inject public X(Y y)
{
...
}
}
bound like this:
bind(X.class).in(MyScopes.SOMETHING);
bind(Y.class).to(SomeYImpl.class);
I´m trying to use it in a page:
public class P extends WebPage{
@Inject
private X x;
public P(){
...
x.foo();
}
}
What i see is this:
java.lang.IllegalArgumentException: Superclass has no null constructors
but no arguments were given
at net.sf.cglib.proxy.Enhancer.emitConstructors(Enhancer.java:718)
at net.sf.cglib.proxy.Enhancer.generateClass(Enhancer.java:499)
at
net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25)
at
net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:216)
at net.sf.cglib.proxy.Enhancer.createHelper(Enhancer.java:377)
at net.sf.cglib.proxy.Enhancer.create(Enhancer.java:285)
at
org.apache.wicket.proxy.LazyInitProxyFactory.createProxy(LazyInitProxyFactory.java:164)
at
org.apache.wicket.guice.GuiceComponentInjector.inject(GuiceComponentInjector.java:112)
at
org.apache.wicket.guice.GuiceComponentInjector.onInstantiation(GuiceComponentInjector.java:193)
at
org.apache.wicket.Application.notifyComponentInstantiationListeners(Application.java:973)
at org.apache.wicket.Component.<init>(Component.java:865)
at org.apache.wicket.MarkupContainer.<init>(MarkupContainer.java:104)
at org.apache.wicket.Page.<init>(Page.java:230)
The obvious problem can be found in LazyInitProxyFactory:
CGLibInterceptor handler = new CGLibInterceptor(type, locator);
Enhancer e = new Enhancer();
e.setInterfaces(new Class[] { Serializable.class, ILazyInitProxy.class,
IWriteReplace.class });
e.setSuperclass(type);
e.setCallback(handler);
return e.create(); // <-- !
Is it currently impossible to use constructor injection ?
cu uwe
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