PersistentMapConverter.java

package student.web.internal.converters;

import student.web.AbstractPersistentMap;
import student.web.ApplicationPersistentMap;
import student.web.SessionPersistentMap;
import student.web.SharedPersistentMap;

import com.thoughtworks.xstream.converters.Converter;
import com.thoughtworks.xstream.converters.MarshallingContext;
import com.thoughtworks.xstream.converters.UnmarshallingContext;
import com.thoughtworks.xstream.converters.reflection.ReflectionConverter;
import com.thoughtworks.xstream.converters.reflection.ReflectionProvider;
import com.thoughtworks.xstream.io.HierarchicalStreamReader;
import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
import com.thoughtworks.xstream.mapper.Mapper;

public class PersistentMapConverter
    implements Converter
{

    @SuppressWarnings("rawtypes")
    public boolean canConvert(Class type)
    {
        return type != null
            && AbstractPersistentMap.class.isAssignableFrom(type);
    }


    public void marshal(
        Object source,
        HierarchicalStreamWriter writer,
        MarshallingContext context)
    {
        throw new IllegalArgumentException(
            "You cannot store an object that contains a reference to a "
            + source.getClass().getSimpleName() + ".");
    }


    public Object unmarshal(
        HierarchicalStreamReader reader,
        UnmarshallingContext context)
    {
        throw new IllegalArgumentException(
            "You cannot load an object that contains a reference to a "
            + "persistent map.");
    }

}