PreferencesSerializer.java

/**
 * Koya is an alfresco module that provides a corporate orientated dataroom.
 *
 * Copyright (C) Itl Developpement 2014
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see `<http://www.gnu.org/licenses/>`.
 */

package fr.itldev.koya.model.json.util;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import org.codehaus.jackson.JsonGenerator;
import org.codehaus.jackson.JsonProcessingException;
import org.codehaus.jackson.map.JsonSerializer;
import org.codehaus.jackson.map.SerializerProvider;

import fr.itldev.koya.model.impl.Preferences;

public class PreferencesSerializer extends JsonSerializer<Preferences> {

	@Override
	public void serialize(Preferences t, JsonGenerator jgen, SerializerProvider sp)
			throws IOException, JsonProcessingException {

		HashMap<String, Object> hierchicalPrefs = new HashMap<>();
		for (String k : t.keySet()) {
			recursiveUnstack(k, t.get(k), hierchicalPrefs);
		}

		// serialization
		jgen.writeStartObject();
		for (Object k : hierchicalPrefs.keySet()) {
			jgen.writeObjectField(k.toString(), hierchicalPrefs.get(k));

		}
		jgen.writeEndObject();
	}

	@SuppressWarnings({ "unchecked", "rawtypes" })
	private void recursiveUnstack(String key, Object value, Map container) {
		String[] kparts = key.split("\\.");
		if (key.equals(kparts[0])) {
			container.put(key, value);
		} else {

			Map inner = (Map) container.get(kparts[0]);
			if (inner == null) {
				inner = new HashMap();
				container.put(kparts[0], inner);
			}
			recursiveUnstack(key.substring(key.indexOf('.') + 1), value, inner);
		}
	}

}