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Liferay Portal Workflow Kaleo Service
/*
* jabsorb - a Java to JavaScript Advanced Object Request Broker
* http://www.jabsorb.org
*
* Copyright 2007-2009 The jabsorb team
*
* based on original code from
* JSON-RPC-Java - a JSON-RPC to Java Bridge with dynamic invocation
*
* Copyright Metaparadigm Pte. Ltd. 2004.
* Michael Clark
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.jabsorb.serializer.impl;
import java.util.Dictionary;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Iterator;
import org.jabsorb.serializer.AbstractSerializer;
import org.jabsorb.serializer.MarshallException;
import org.jabsorb.serializer.ObjectMatch;
import org.jabsorb.serializer.SerializerState;
import org.jabsorb.serializer.UnmarshallException;
import org.jabsorb.JSONSerializer;
import org.json.JSONException;
import org.json.JSONObject;
/**
* Serialises Hashtables
*
* TODO: why not use a map serialiser?
*/
public class DictionarySerializer extends AbstractSerializer
{
/**
* Unique serialisation id.
*/
private final static long serialVersionUID = 2;
/**
* Classes that this can serialise.
*/
private static Class[] _serializableClasses = new Class[] { Hashtable.class };
/**
* Classes that this can serialise to.
*/
private static Class[] _JSONClasses = new Class[] { JSONObject.class };
public boolean canSerialize(Class clazz, Class jsonClazz)
{
return (super.canSerialize(clazz, jsonClazz) || ((jsonClazz == null || jsonClazz == JSONObject.class) && Dictionary.class
.isAssignableFrom(clazz)));
}
public Class[] getJSONClasses()
{
return _JSONClasses;
}
public Class[] getSerializableClasses()
{
return _serializableClasses;
}
public Object marshall(SerializerState state, Object p, Object o)
throws MarshallException
{
Dictionary ht = (Dictionary) o;
JSONObject obj = new JSONObject();
JSONObject mapdata = new JSONObject();
try
{
if (ser.getMarshallClassHints())
{
obj.put("javaClass", o.getClass().getName());
}
obj.put("map", mapdata);
state.push(o,mapdata,"map");
}
catch (JSONException e)
{
throw new MarshallException("Could not put data"+ e.getMessage(), e);
}
Object key = null;
try
{
Enumeration en = ht.keys();
while (en.hasMoreElements())
{
key = en.nextElement();
String keyString = key.toString(); // only support String keys
Object json = ser.marshall(state, mapdata, ht.get(key), keyString);
// omit the object entirely if it's a circular reference or duplicate
// it will be regenerated in the fixups phase
if (JSONSerializer.CIRC_REF_OR_DUPLICATE != json)
{
mapdata.put(keyString,json );
}
}
}
catch (MarshallException e)
{
throw new MarshallException("map key " + key + " " + e.getMessage(), e);
}
catch (JSONException e)
{
throw new MarshallException("map key " + key + " " + e.getMessage(), e);
}
finally
{
state.pop();
}
return obj;
}
// TODO: try unMarshall and unMarshall share 90% code. Put in into an
// intermediate function.
// TODO: Also cache the result somehow so that an unmarshall
// following a tryUnmarshall doesn't do the same work twice!
public ObjectMatch tryUnmarshall(SerializerState state, Class clazz, Object o)
throws UnmarshallException
{
JSONObject jso = (JSONObject) o;
String java_class;
try
{
java_class = jso.getString("javaClass");
}
catch (JSONException e)
{
throw new UnmarshallException("Could not read javaClass", e);
}
if (java_class == null)
{
throw new UnmarshallException("no type hint");
}
if (!(java_class.equals("java.util.Dictionary") || java_class
.equals("java.util.Hashtable")))
{
throw new UnmarshallException("not a Dictionary");
}
JSONObject jsonmap;
try
{
jsonmap = jso.getJSONObject("map");
}
catch (JSONException e)
{
throw new UnmarshallException("map missing", e);
}
if (jsonmap == null)
{
throw new UnmarshallException("map missing");
}
ObjectMatch m = new ObjectMatch(-1);
state.setSerialized(o, m);
Iterator i = jsonmap.keys();
String key = null;
try
{
while (i.hasNext())
{
key = (String) i.next();
m.setMismatch(ser.tryUnmarshall(state, null, jsonmap.get(key)).max(m).getMismatch());
}
}
catch (UnmarshallException e)
{
throw new UnmarshallException("key " + key + " " + e.getMessage(), e);
}
catch (JSONException e)
{
throw new UnmarshallException("key " + key + " " + e.getMessage(), e);
}
return m;
}
public Object unmarshall(SerializerState state, Class clazz, Object o)
throws UnmarshallException
{
JSONObject jso = (JSONObject) o;
String java_class;
try
{
java_class = jso.getString("javaClass");
}
catch (JSONException e)
{
throw new UnmarshallException("Could not read javaClass", e);
}
if (java_class == null)
{
throw new UnmarshallException("no type hint");
}
Hashtable ht;
if (java_class.equals("java.util.Dictionary")
|| java_class.equals("java.util.Hashtable"))
{
ht = new Hashtable();
}
else
{
throw new UnmarshallException("not a Dictionary");
}
JSONObject jsonmap;
try
{
jsonmap = jso.getJSONObject("map");
}
catch (JSONException e)
{
throw new UnmarshallException("map missing", e);
}
if (jsonmap == null)
{
throw new UnmarshallException("map missing");
}
state.setSerialized(o, ht);
Iterator i = jsonmap.keys();
String key = null;
try
{
while (i.hasNext())
{
key = (String) i.next();
ht.put(key, ser.unmarshall(state, null, jsonmap.get(key)));
}
}
catch (UnmarshallException e)
{
throw new UnmarshallException("key " + key + " " + e.getMessage(), e);
}
catch (JSONException e)
{
throw new UnmarshallException("key " + key + " " + e.getMessage(), e);
}
return ht;
}
}