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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) 2004, 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 23. February 2004 by Joe Walnes
*/
package com.feilong.lib.xstream.converters.collections;
import java.lang.reflect.Field;
import java.util.Iterator;
import java.util.Map;
import java.util.Properties;
import java.util.TreeMap;
import com.feilong.lib.xstream.converters.Converter;
import com.feilong.lib.xstream.converters.MarshallingContext;
import com.feilong.lib.xstream.converters.UnmarshallingContext;
import com.feilong.lib.xstream.core.util.Fields;
import com.feilong.lib.xstream.io.HierarchicalStreamReader;
import com.feilong.lib.xstream.io.HierarchicalStreamWriter;
/**
* Special converter for java.util.Properties that stores properties in a more compact form than
* java.util.Map.
*
* Because all entries of a Properties instance are Strings, a single element is used for each
* property with two attributes; one for key and one for value.
*
*
* Additionally, default properties are also serialized, if they are present or if a
* SecurityManager is set, and it has permissions for SecurityManager.checkPackageAccess,
* SecurityManager.checkMemberAccess(this, EnumSet.MEMBER) and
* ReflectPermission("suppressAccessChecks").
*
*
* @author Joe Walnes
* @author Kevin Ring
*/
public class PropertiesConverter implements Converter{
private final static Field defaultsField = Fields.locate(Properties.class, Properties.class, false);
private final boolean sort;
public PropertiesConverter(){
this(false);
}
public PropertiesConverter(boolean sort){
this.sort = sort;
}
@Override
public boolean canConvert(Class type){
return Properties.class == type;
}
@Override
public void marshal(Object source,HierarchicalStreamWriter writer,MarshallingContext context){
final Properties properties = (Properties) source;
Map map = sort ? (Map) new TreeMap(properties) : (Map) properties;
for (Iterator iterator = map.entrySet().iterator(); iterator.hasNext();){
Map.Entry entry = (Map.Entry) iterator.next();
writer.startNode("property");
writer.addAttribute("name", entry.getKey().toString());
writer.addAttribute("value", entry.getValue().toString());
writer.endNode();
}
if (defaultsField != null){
Properties defaults = (Properties) Fields.read(defaultsField, properties);
if (defaults != null){
writer.startNode("defaults");
marshal(defaults, writer, context);
writer.endNode();
}
}
}
@Override
public Object unmarshal(HierarchicalStreamReader reader,UnmarshallingContext context){
Properties properties = new Properties();
Properties defaults = null;
while (reader.hasMoreChildren()){
reader.moveDown();
if (reader.getNodeName().equals("defaults")){
defaults = (Properties) unmarshal(reader, context);
}else{
String name = reader.getAttribute("name");
String value = reader.getAttribute("value");
properties.setProperty(name, value);
}
reader.moveUp();
}
if (defaults == null){
return properties;
}else{
Properties propertiesWithDefaults = new Properties(defaults);
propertiesWithDefaults.putAll(properties);
return propertiesWithDefaults;
}
}
}