/*
* Copyright (C) 2004, 2005, 2006 Joe Walnes.
* Copyright (C) 2006, 2007, 2008, 2009, 2011 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 07. March 2004 by Joe Walnes
*/
package com.thoughtworks.xstream.core;
import com.thoughtworks.xstream.converters.ConversionException;
import com.thoughtworks.xstream.converters.Converter;
import com.thoughtworks.xstream.converters.ConverterLookup;
import com.thoughtworks.xstream.converters.ConverterRegistry;
import com.thoughtworks.xstream.core.util.PrioritizedList;
import com.thoughtworks.xstream.mapper.Mapper;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.WeakHashMap;
/**
* The default implementation of converters lookup.
*
* @author Joe Walnes
* @author Jörg Schaible
* @author Guilherme Silveira
*/
public class DefaultConverterLookup implements ConverterLookup, ConverterRegistry, Caching {
private final PrioritizedList converters = new PrioritizedList();
private transient Map typeToConverterMap = Collections.synchronizedMap(new WeakHashMap());
public DefaultConverterLookup() {
}
/**
* @deprecated As of 1.3, use {@link #DefaultConverterLookup()}
*/
public DefaultConverterLookup(Mapper mapper) {
}
public Converter lookupConverterForType(Class type) {
Converter cachedConverter = (Converter) typeToConverterMap.get(type);
if (cachedConverter != null) {
return cachedConverter;
}
Iterator iterator = converters.iterator();
while (iterator.hasNext()) {
Converter converter = (Converter) iterator.next();
if (converter.canConvert(type)) {
typeToConverterMap.put(type, converter);
return converter;
}
}
throw new ConversionException("No converter specified for " + type);
}
public void registerConverter(Converter converter, int priority) {
converters.add(converter, priority);
for (Iterator iter = typeToConverterMap.keySet().iterator(); iter.hasNext();) {
Class type = (Class) iter.next();
if (converter.canConvert(type)) {
iter.remove();
}
}
}
public void flushCache() {
typeToConverterMap.clear();
Iterator iterator = converters.iterator();
while (iterator.hasNext()) {
Converter converter = (Converter) iterator.next();
if (converter instanceof Caching) {
((Caching)converter).flushCache();
}
}
}
private Object readResolve() {
typeToConverterMap = Collections.synchronizedMap(new HashMap());
return this;
}
}