/*
* Copyright (C) 2017 XStream Committers.
* All rights reserved.
*
* The software in this package is published under the terms of the BSD
* style license a copy of which has been included with this distribution in
* the LICENSE.txt file.
*
* Created on 06. March 2017 by Joerg Schaible
*/
package com.thoughtworks.xstream.converters.time;
import java.time.Clock;
import java.time.ZoneId;
import com.thoughtworks.xstream.converters.Converter;
import com.thoughtworks.xstream.converters.MarshallingContext;
import com.thoughtworks.xstream.converters.UnmarshallingContext;
import com.thoughtworks.xstream.io.ExtendedHierarchicalStreamWriterHelper;
import com.thoughtworks.xstream.io.HierarchicalStreamReader;
import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
import com.thoughtworks.xstream.mapper.Mapper;
/**
* Converts a system {@link Clock}, using zone as nested element.
*
* @author Jörg Schaible
* @since 1.4.10
*/
public class SystemClockConverter implements Converter {
private final Mapper mapper;
private final Class<?> type;
/**
* Constructs a SystemClockConverter instance.
*
* @param mapper the Mapper instance
*/
public SystemClockConverter(final Mapper mapper) {
this.mapper = mapper;
type = Clock.systemUTC().getClass();
}
@Override
public boolean canConvert(final Class type) {
return type == this.type;
}
@Override
public void marshal(final Object source, final HierarchicalStreamWriter writer, final MarshallingContext context) {
final Clock clock = (Clock)source;
ExtendedHierarchicalStreamWriterHelper.startNode(writer, mapper.serializedMember(Clock.class, "zone"), null);
context.convertAnother(clock.getZone());
writer.endNode();
}
@Override
public Object unmarshal(final HierarchicalStreamReader reader, final UnmarshallingContext context) {
reader.moveDown();
final ZoneId zone = (ZoneId)context.convertAnother(null, ZoneId.class);
reader.moveUp();
return Clock.system(zone);
}
}