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feilong is a suite of core and expanded libraries that include utility classes, http, excel,cvs, io classes, and much much more.
/*
* Copyright (C) 2005 Joe Walnes.
* Copyright (C) 2006, 2007, 2008, 2009, 2013 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. April 2005 by Joe Walnes
*/
// ***** READ THIS *****
// This class will only compile with JDK 1.5.0 or above as it test Java enums.
// If you are using an earlier version of Java, just don't try to build this class. XStream should work fine without it.
package com.feilong.lib.xstream.converters.enums;
import java.lang.reflect.Field;
import java.util.EnumMap;
import com.feilong.lib.xstream.converters.ConversionException;
import com.feilong.lib.xstream.converters.MarshallingContext;
import com.feilong.lib.xstream.converters.UnmarshallingContext;
import com.feilong.lib.xstream.converters.collections.MapConverter;
import com.feilong.lib.xstream.core.util.Fields;
import com.feilong.lib.xstream.io.HierarchicalStreamReader;
import com.feilong.lib.xstream.io.HierarchicalStreamWriter;
import com.feilong.lib.xstream.mapper.Mapper;
/**
* Serializes an Java 5 EnumMap, including the type of Enum it's for. If a SecurityManager is set, the converter will only work with
* permissions
* for SecurityManager.checkPackageAccess, SecurityManager.checkMemberAccess(this, EnumSet.MEMBER)
* and ReflectPermission("suppressAccessChecks").
*
* @author Joe Walnes
*/
public class EnumMapConverter extends MapConverter{
private final static Field typeField = Fields.locate(EnumMap.class, Class.class, false);
public EnumMapConverter(Mapper mapper){
super(mapper);
}
@Override
public boolean canConvert(Class type){
return typeField != null && type == EnumMap.class;
}
@Override
public void marshal(Object source,HierarchicalStreamWriter writer,MarshallingContext context){
Class type = (Class) Fields.read(typeField, source);
String attributeName = mapper().aliasForSystemAttribute("enum-type");
if (attributeName != null){
writer.addAttribute(attributeName, mapper().serializedClass(type));
}
super.marshal(source, writer, context);
}
@Override
@SuppressWarnings("unchecked")
public Object unmarshal(HierarchicalStreamReader reader,UnmarshallingContext context){
String attributeName = mapper().aliasForSystemAttribute("enum-type");
if (attributeName == null){
throw new ConversionException("No EnumType specified for EnumMap");
}
Class type = mapper().realClass(reader.getAttribute(attributeName));
EnumMap map = new EnumMap(type);
populateMap(reader, context, map);
return map;
}
}