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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) 2003, 2004, 2005 Joe Walnes.
* Copyright (C) 2006, 2007, 2010, 2011, 2013, 2018 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.feilong.lib.xstream.converters.collections;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.Vector;
import com.feilong.lib.xstream.converters.MarshallingContext;
import com.feilong.lib.xstream.converters.UnmarshallingContext;
import com.feilong.lib.xstream.io.HierarchicalStreamReader;
import com.feilong.lib.xstream.io.HierarchicalStreamWriter;
import com.feilong.lib.xstream.mapper.Mapper;
/**
* Converts most common Collections (Lists and Sets) to XML, specifying a nested
* element for each item.
*
*
* Supports java.util.ArrayList, java.util.HashSet,
* java.util.LinkedList, java.util.Vector and java.util.LinkedHashSet.
*
*
* @author Joe Walnes
*/
public class CollectionConverter extends AbstractCollectionConverter{
private final Class type;
public CollectionConverter(Mapper mapper){
this(mapper, null);
}
/**
* Construct a CollectionConverter for a special Collection type.
*
* @param mapper
* the mapper
* @param type
* the Collection type to handle
* @since 1.4.5
*/
public CollectionConverter(Mapper mapper, Class type){
super(mapper);
this.type = type;
if (type != null && !Collection.class.isAssignableFrom(type)){
throw new IllegalArgumentException(type + " not of type " + Collection.class);
}
}
@Override
public boolean canConvert(Class type){
if (this.type != null){
return type.equals(this.type);
}
return type.equals(ArrayList.class) || type.equals(HashSet.class) || type.equals(LinkedList.class) || type.equals(Vector.class)
|| type.equals(LinkedHashSet.class);
}
@Override
public void marshal(Object source,HierarchicalStreamWriter writer,MarshallingContext context){
Collection collection = (Collection) source;
for (Iterator iterator = collection.iterator(); iterator.hasNext();){
Object item = iterator.next();
writeCompleteItem(item, context, writer);
}
}
@Override
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){
populateCollection(reader, context, collection, collection);
}
protected void populateCollection(HierarchicalStreamReader reader,UnmarshallingContext context,Collection collection,Collection target){
while (reader.hasMoreChildren()){
reader.moveDown();
addCurrentElementToCollection(reader, context, collection, target);
reader.moveUp();
}
}
protected void addCurrentElementToCollection(
HierarchicalStreamReader reader,
UnmarshallingContext context,
Collection collection,
Collection target){
final Object item = readItem(reader, context, collection); // call readBareItem when deprecated method is removed
target.add(item);
}
@Override
protected Object createCollection(Class type){
return super.createCollection(this.type != null ? this.type : type);
}
}