/*
* Copyright (C) 2003, 2004, 2005 Joe Walnes.
* Copyright (C) 2006, 2007 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 01. October 2003 by Joe Walnes
*/
package com.thoughtworks.xstream.converters.collections;
import com.thoughtworks.xstream.converters.MarshallingContext;
import com.thoughtworks.xstream.converters.UnmarshallingContext;
import com.thoughtworks.xstream.core.JVM;
import com.thoughtworks.xstream.io.HierarchicalStreamReader;
import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
import com.thoughtworks.xstream.mapper.Mapper;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.Vector;
/**
* Converts most common Collections (Lists and Sets) to XML, specifying a nested
* element for each item.
* <p/>
* <p>Supports java.util.ArrayList, java.util.HashSet,
* java.util.LinkedList, java.util.Vector and java.util.LinkedHashSet.</p>
*
* @author Joe Walnes
*/
public class CollectionConverter extends AbstractCollectionConverter {
public CollectionConverter(Mapper mapper) {
super(mapper);
}
public boolean canConvert(Class type) {
return type.equals(ArrayList.class)
|| type.equals(HashSet.class)
|| type.equals(LinkedList.class)
|| type.equals(Vector.class)
|| (JVM.is14() && type.getName().equals("java.util.LinkedHashSet"));
}
public void marshal(Object source, HierarchicalStreamWriter writer, MarshallingContext context) {
Collection collection = (Collection) source;
for (Iterator iterator = collection.iterator(); iterator.hasNext();) {
Object item = iterator.next();
writeItem(item, context, writer);
}
}
public Object unmarshal(HierarchicalStreamReader reader, UnmarshallingContext context) {
Collection collection = (Collection) createCollection(context.getRequiredType());
populateCollection(reader, context, collection);
return collection;
}
protected void populateCollection(HierarchicalStreamReader reader, UnmarshallingContext context, Collection collection) {
while (reader.hasMoreChildren()) {
reader.moveDown();
Object item = readItem(reader, context, collection);
collection.add(item);
reader.moveUp();
}
}
}