com.rodaxsoft.mailgun.converters.CampaignConverter.java Source code

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Here is the source code for com.rodaxsoft.mailgun.converters.CampaignConverter.java

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/**
   CampaignConverter.java
       
   Created by John Boyer on Aug 18, 2015
   (c) Copyright 2015 Rodax Software, Inc. All Rights Reserved. 
    
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. 
 */
package com.rodaxsoft.mailgun.converters;

import static org.apache.commons.lang3.StringUtils.INDEX_NOT_FOUND;

import java.lang.reflect.InvocationTargetException;
import java.util.HashMap;
import java.util.Map;

import net.sf.json.JSONObject;

import org.apache.commons.beanutils.BeanUtils;
import org.apache.commons.beanutils.Converter;
import org.apache.commons.collections4.Transformer;
import org.apache.commons.collections4.map.TransformedMap;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.exception.ContextedRuntimeException;

import com.rodaxsoft.mailgun.Campaign;

/**
 * Campaign converter. 
 * Converts a {@link JSONObject} into a {@link Campaign} instance.
 * @author John Boyer
 * @version 2015-08-18
 */
public final class CampaignConverter implements Converter {

    private static final class KeyTransformer implements Transformer<String, String> {
        @Override
        public String transform(String input) {
            String result = input;

            int index = StringUtils.indexOf(input, '_');
            if (index != INDEX_NOT_FOUND) {
                StringBuilder buf = new StringBuilder(input);
                //Make uppercase and replace
                char upper = Character.toUpperCase(buf.charAt(index + 1));
                buf.setCharAt(index + 1, upper);
                //Remove underscores
                result = StringUtils.remove(buf.toString(), '_');
            }

            return result;
        }
    }

    @Override
    public <T> T convert(Class<T> type, Object value) {

        Campaign campaign = null;

        if (value instanceof JSONObject) {

            JSONObject json = (JSONObject) value;

            Transformer<String, String> keyTransformer;
            keyTransformer = new KeyTransformer();

            @SuppressWarnings("unchecked")
            final Map<String, Object> copy = new HashMap<>(json);
            Map<String, Object> transformed;
            transformed = TransformedMap.transformedMap(copy, keyTransformer, null);

            campaign = new Campaign();
            try {
                BeanUtils.populate(campaign, transformed);
            } catch (IllegalAccessException | InvocationTargetException e) {
                throw new ContextedRuntimeException(e);
            }
        }

        return type.cast(campaign);
    }

}