com.daveayan.rjson.transformer.toobject.JsonObjectAsMapTransformer.java Source code

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Here is the source code for com.daveayan.rjson.transformer.toobject.JsonObjectAsMapTransformer.java

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/*
 * Copyright (c) 2011 Ayan Dave http://daveayan.com
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
 * associated documentation files (the "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the
 * following conditions:
 *
 * 1) The above copyright notice and this permission notice shall be included without any changes or alterations
 * in all copies or substantial portions of the Software.
 * 2) The copyright notice part of the org.json package and its classes shall be honored.
 * 3) This software shall be used for Good, not Evil.
 * portions of the Software.
    
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
 * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
package com.daveayan.rjson.transformer.toobject;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import org.apache.commons.lang.StringUtils;

import com.daveayan.json.JSONObject;
import com.daveayan.mirage.ReflectionUtils;
import com.daveayan.rjson.transformer.JsonToObjectTransformer;
import com.daveayan.transformers.Context;

public class JsonObjectAsMapTransformer implements JsonToObjectTransformer {
    public boolean canTransform(Object from, Class<?> to, String fieldName, Context context) {
        if (from == null) {
            return false;
        }
        return (from instanceof JSONObject) && !((JSONObject) from).has("jvm_class_name")
                && ReflectionUtils.classImplements(to, Map.class);
    }

    public Object transform(Object from, Class<?> to, String fieldName, Context context) {
        JSONObject jo = (JSONObject) from;
        Map<Object, Object> newMap = null;
        if (StringUtils.equalsIgnoreCase(to.getName(), "java.util.Map")) {
            newMap = new HashMap<Object, Object>();
        } else {
            newMap = (Map<Object, Object>) ReflectionUtils.objectFor(to.getName());
        }
        Iterator<?> iter = jo.getMap().keySet().iterator();
        while (iter.hasNext()) {
            Object key = iter.next();
            Object value = jo.getMap().get(key);
            Class convertTo = to;
            if (StringUtils.equalsIgnoreCase(value.getClass().getName(), "com.daveayan.json.JSONArray")) {
                convertTo = ArrayList.class;
            }
            newMap.put(key, context.transformer().delegateTransformation(value, convertTo, fieldName, context));
        }
        return newMap;
    }
}