Hi Jörg,
I created a JIRA issue: http://jira.codehaus.org/browse/XSTR-767
Thanks for looking into this!
Cheers,
Tobias
Hi Tobias,
it seems you're the first one who tries to serialize something like that.
Please open a JIRA issue and I try to look into it in the next two weeks.
Cheers,
Jörg
Tobias Gierke wrote:
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
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Tobias Gierke
Development
VOIPFUTURE GmbH Wendenstraße 4 20097 Hamburg, Germany
Phone +49 40 688 900 164 Fax +49 40 688 900 199
Email tobias.gie...@voipfuture.com Web http://www.voipfuture.com
CEO Jan Bastian
Commercial Court AG Hamburg HRB 109896, VAT ID DE263738086
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