fr.exanpe.tapestry.tldgen.ext.impl.DeferredValueConverter Maven / Gradle / Ivy

//
// Copyright 2010 EXANPE 
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

package fr.exanpe.tapestry.tldgen.ext.impl;

import com.thoughtworks.xstream.converters.Converter;
import com.thoughtworks.xstream.converters.MarshallingContext;
import com.thoughtworks.xstream.converters.UnmarshallingContext;
import com.thoughtworks.xstream.io.HierarchicalStreamReader;
import com.thoughtworks.xstream.io.HierarchicalStreamWriter;

/**
 * Convert the values of the special Deferred element type
 * 
 * @author attonnnn
 */
public class DeferredValueConverter implements Converter
{

    public void marshal(Object source, HierarchicalStreamWriter writer, MarshallingContext context)
    {
        writer.startNode("type");
        writer.setValue((String) source);
        writer.endNode();
    }

    public Object unmarshal(HierarchicalStreamReader reader, UnmarshallingContext context)
    {
        throw new IllegalStateException("not implemented as no unmarshalling must occur");
    }

    public boolean canConvert(Class type)
    {
        return type.equals(String.class);
    }
}