Sorry, forgot to add stack trace (added to end of mail).
Hi,
It seems we're not able to deserialize Lambda expressions with XStream
1.4.7
The code in question looks roughly like this:
@FunctionalInterface
public interface Visible extends Serializable {
public boolean isVisible();
}
public interface IMenuItem extends Serializable {
// ... stuff omitted ...
}
public abstract class AbstractMenuItem implements IMenuItem {
private final Visible visibilityFunction;
// ... stuff omitted ...
}
The method that is invoked with lambda expressions (that later get
stored in the 'visibilityFunction' field of an AbstractMenuItem
subclass instance) looks like this:
public <T extends Page> void addEntry(String resourceLabel , Class<T>
pageClazz,Visible visibilityFunction);
Since the Visible interface extends Serializable , the compiler
generates code for a serializable Lambda (and in fact it does, I
checked the generated .class file with javap).
The code used to setup XStream looks like this:
private XStream createXStream()
{
final XStream xstream = new XStream( new StaxDriver() ) {
@Override
protected MapperWrapper wrapMapper(MapperWrapper next) {
return new WicketProxyMapper( new CGLIBMapper( new
HibernateMapper(next) ) ); //
}
};
// override the built-in DynamicProxyConverter that chokes on
Apache Wicket proxies
xstream.registerConverter( new WicketProxyConverter() ,
XStream.PRIORITY_VERY_HIGH );
// register Hibernate-specific converters
xstream.registerConverter(new HibernateProxyConverter());
xstream.registerConverter(new
HibernatePersistentCollectionConverter(xstream.getMapper()));
xstream.registerConverter(new
HibernatePersistentMapConverter(xstream.getMapper()));
xstream.registerConverter(new
HibernatePersistentSortedMapConverter(xstream.getMapper()));
xstream.registerConverter(new
HibernatePersistentSortedSetConverter(xstream.getMapper()));
// register CGLLib converters
xstream.registerConverter(new
CGLIBEnhancedConverter(xstream.getMapper(),
xstream.getReflectionProvider() , getClass().getClassLoader() ) );
return xstream;
}
Before I start diving into the world of invokedynamic and method
handles , did anybody else encounter this issue and knows how to solve
it ?
Cheers,
Tobias
com.thoughtworks.xstream.converters.ConversionException:
com.vodecc.voipmng.boundary.wicket.general.PageWithMenu$$Lambda$124/1803727536
:
com.vodecc.voipmng.boundary.wicket.general.PageWithMenu$$Lambda$124/1803727536
---- Debugging information ----
message :
com.vodecc.voipmng.boundary.wicket.general.PageWithMenu$$Lambda$124/1803727536
cause-exception :
com.thoughtworks.xstream.mapper.CannotResolveClassException
cause-message :
com.vodecc.voipmng.boundary.wicket.general.PageWithMenu$$Lambda$124/1803727536
class :
com.vodecc.voipmng.boundary.wicket.general.PageWithHeaderAndFooter$11
required-type :
com.vodecc.voipmng.boundary.wicket.general.PageWithHeaderAndFooter$11
converter-type :
com.thoughtworks.xstream.converters.reflection.ReflectionConverter
path :
/com.vodecc.voipmng.boundary.wicket.trunkmonitor.TrunkMonitorPage/children/com.vodecc.voipmng.boundary.wicket.general.PageWithMenu$1/children/com.vodecc.voipmng.boundary.wicket.general.PageWithMenu$1$1[2]/children/com.vodecc.voipmng.boundary.wicket.general.PageWithMenu$SubMenuList/children/children/org.apache.wicket.markup.html.list.ListItem/children/children/com.vodecc.voipmng.boundary.wicket.general.PageWithMenu$NestedListEntry$1/children/org.apache.wicket.markup.html.list.ListItem[3]/children/children/val$visibilityFunction
line number : 1
class[1] :
com.vodecc.voipmng.boundary.wicket.general.PageWithMenu$SimpleListEntry
class[2] : org.apache.wicket.markup.html.list.ListItem
class[3] : [Ljava.lang.Object;
converter-type[1] :
com.thoughtworks.xstream.converters.collections.ArrayConverter
class[4] :
com.vodecc.voipmng.boundary.wicket.general.PageWithMenu$NestedListEntry$1
class[5] :
com.vodecc.voipmng.boundary.wicket.general.PageWithMenu$NestedListEntry
class[6] :
com.vodecc.voipmng.boundary.wicket.general.PageWithMenu$SubMenuList$1
class[7] :
com.vodecc.voipmng.boundary.wicket.general.PageWithMenu$SubMenuList
class[8] :
com.vodecc.voipmng.boundary.wicket.general.PageWithMenu$1$1
class[9] :
com.vodecc.voipmng.boundary.wicket.general.PageWithMenu$1
class[10] :
com.vodecc.voipmng.boundary.wicket.trunkmonitor.TrunkMonitorPage
version : not available
-------------------------------
Caused by: com.thoughtworks.xstream.mapper.CannotResolveClassException:
com.vodecc.voipmng.boundary.wicket.general.PageWithMenu$$Lambda$129/1127212197
at
com.thoughtworks.xstream.mapper.DefaultMapper.realClass(DefaultMapper.java:79)
at
com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at
com.thoughtworks.xstream.mapper.DynamicProxyMapper.realClass(DynamicProxyMapper.java:55)
at
com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at
com.thoughtworks.xstream.mapper.PackageAliasingMapper.realClass(PackageAliasingMapper.java:88)
at
com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at
com.thoughtworks.xstream.mapper.ClassAliasingMapper.realClass(ClassAliasingMapper.java:79)
at
com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at
com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at
com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at
com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at
com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at
com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at
com.thoughtworks.xstream.mapper.ArrayMapper.realClass(ArrayMapper.java:74)
at
com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at
com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at
com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at
com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at
com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at
com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at
com.thoughtworks.xstream.mapper.SecurityMapper.realClass(SecurityMapper.java:71)
at
com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at
com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at
com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at
com.thoughtworks.xstream.mapper.CGLIBMapper.realClass(CGLIBMapper.java:55)
at
com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at
com.voipfuture.voipmng.core.util.xstream.WicketProxyMapper.realClass(WicketProxyMapper.java:46)
at
com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at
com.thoughtworks.xstream.mapper.CachingMapper.realClass(CachingMapper.java:47)
at
com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:401)
at
com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:257)
at
com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
... 153 more
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