// ========================================================================
// Copyright (c) 2004-2009 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
package org.mortbay.util.ajax;
import java.util.Map;
import org.mortbay.util.Loader;
import org.mortbay.util.ajax.JSON.Convertor;
import org.mortbay.util.ajax.JSON.Output;
/**
* {@link JSONPojoConvertor} factory convertor.
* <p>
* This {@link Convertor} will create and register {@link JSONPojoConvertor} instances for unknown classes.
*
*/
public class JSONPojoConvertorFactory implements JSON.Convertor
{
private final JSON _json;
private final boolean _fromJSON;
/**
* @param json The JSON to use for conversions and registrations
*/
public JSONPojoConvertorFactory(JSON json)
{
_json=json;
_fromJSON=true;
if (json==null)
{
throw new IllegalArgumentException();
}
}
/**
* @param json The JSON to use for conversions and registrations
* @param fromJSON Passed to {@link JSONPojoConvertor} constructor.
*/
public JSONPojoConvertorFactory(JSON json,boolean fromJSON)
{
_json=json;
_fromJSON=fromJSON;
if (json==null)
{
throw new IllegalArgumentException();
}
}
public void toJSON(Object obj, Output out)
{
String clsName=obj.getClass().getName();
Convertor convertor=_json.getConvertorFor(clsName);
if (convertor==null)
{
try
{
Class cls=Loader.loadClass(JSON.class,clsName);
convertor=new JSONPojoConvertor(cls,_fromJSON);
_json.addConvertorFor(clsName, convertor);
}
catch (ClassNotFoundException e)
{
e.printStackTrace();
}
}
if (convertor!=null&&obj.getClass()!=Object.class)
{
convertor.toJSON(obj, out);
}
else
{
out.add(obj.toString());
}
}
public Object fromJSON(Map object)
{
Map map=object;
String clsName=(String)map.get("class");
if (clsName!=null)
{
Convertor convertor=_json.getConvertorFor(clsName);
if (convertor==null)
{
try
{
Class cls=Loader.loadClass(JSON.class,clsName);
convertor=new JSONPojoConvertor(cls);
_json.addConvertorFor(clsName, convertor);
}
catch (ClassNotFoundException e)
{
e.printStackTrace();
}
}
if (convertor!=null&&!clsName.equals(Object.class.getName()))
{
return convertor.fromJSON(object);
}
}
return map;
}
}