001/*
002 * Stallion Core: A Modern Web Framework
003 *
004 * Copyright (C) 2015 - 2016 Stallion Software LLC.
005 *
006 * This program is free software: you can redistribute it and/or modify it under the terms of the
007 * GNU General Public License as published by the Free Software Foundation, either version 2 of
008 * the License, or (at your option) any later version. This program is distributed in the hope that
009 * it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
010 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
011 * License for more details. You should have received a copy of the GNU General Public License
012 * along with this program.  If not, see <http://www.gnu.org/licenses/gpl-2.0.html>.
013 *
014 *
015 *
016 */
017
018package io.stallion.dataAccess.db.converters;
019
020import com.fasterxml.jackson.core.type.TypeReference;
021import io.stallion.utils.json.JSON;
022
023import java.util.HashMap;
024import java.util.Map;
025
026import static io.stallion.utils.Literals.*;
027
028
029public class JsonMapConverter implements JsonAttributeConverter<Map> {
030
031
032    @Override
033    public Map convertToEntityAttribute(String json) {
034        if (empty(json)) {
035            return map();
036        }
037        TypeReference<HashMap<String,Object>> typeRef = new TypeReference<HashMap<String,Object>>() {};
038        Object o = JSON.parse(json, typeRef);
039        return (Map<String, Object>) o;
040
041    }
042
043    @Override
044    public String convertToDatabaseColumn(Map dbData) {
045        try {
046            return JSON.stringify(dbData);
047        } catch (Exception e) {
048            throw new RuntimeException(e);
049        }
050    }
051}