de.ifgi.fmt.mongo.conv.JSONConverter.java Source code

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Here is the source code for de.ifgi.fmt.mongo.conv.JSONConverter.java

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/*
 * Copyright (C) 2012  Christian Autermann, Dustin Demuth, Maurin Radtke
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
package de.ifgi.fmt.mongo.conv;

import org.codehaus.jettison.json.JSONException;
import org.codehaus.jettison.json.JSONObject;

import com.google.code.morphia.converters.SimpleValueConverter;
import com.google.code.morphia.converters.TypeConverter;
import com.google.code.morphia.mapping.MappedField;
import com.google.code.morphia.mapping.MappingException;
import com.mongodb.util.JSON;

/**
 * 
 * @author Autermann, Demuth, Radtke
 */
@SuppressWarnings("rawtypes")
public class JSONConverter extends TypeConverter implements SimpleValueConverter {

    /**
     * 
     */
    public JSONConverter() {
        super(JSONObject.class);
    }

    /**
     * 
     * @param value
     * @param optionalExtraInfo
     * @return
     */
    @Override
    public Object encode(Object value, MappedField optionalExtraInfo) {
        if (value == null)
            return null;
        String s = ((JSONObject) value).toString();
        return JSON.parse(s);
    }

    /**
     * 
     * @param c
     * @param o
     * @param i
     * @return
     * @throws MappingException
     */
    @Override
    public Object decode(Class c, Object o, MappedField i) throws MappingException {
        if (o == null)
            return null;
        try {
            String s = JSON.serialize(o);
            return new JSONObject(s);
        } catch (JSONException e) {
            throw new RuntimeException(e);
        }
    }
}