com.github.sourjson.translat.def.DateTranslater.java Source code

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Here is the source code for com.github.sourjson.translat.def.DateTranslater.java

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/**
 * Copyright 2013 Salomon BRYS
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.github.sourjson.translat.def;

import java.lang.reflect.AnnotatedElement;
import java.lang.reflect.Type;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;

import javax.annotation.CheckForNull;

import org.json.simple.JSONObject;

import com.github.sourjson.SourJson;
import com.github.sourjson.exception.SourJsonException;
import com.github.sourjson.translat.SJTranslater;

/**
 * Date default translater
 * Translate from date to string and back
 *
 * @author Salomon BRYS <salomon.brys@gmail.com>
 */
public class DateTranslater implements SJTranslater<Date> {

    /**
     * Formatter that will be used to (de)serialize dates
     */
    private SimpleDateFormat formater;

    /** */
    public DateTranslater() {
        formater = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        formater.setTimeZone(TimeZone.getTimeZone("GMT"));
    }

    @SuppressWarnings("unchecked")
    @Override
    public @CheckForNull JSONObject serialize(Date obj, Type typeOnServer, AnnotatedElement el,
            @CheckForNull Object enclosing, SourJson json, double version) {
        JSONObject ret = new JSONObject();
        ret.put("GMT", formater.format(obj));
        return ret;
    }

    @Override
    public @CheckForNull Date deserialize(JSONObject obj, Type typeOnServer, AnnotatedElement el,
            @CheckForNull Object enclosing, SourJson json, double version) throws SourJsonException {
        try {
            return formater.parse((String) obj.get("GMT"));
        } catch (ParseException e) {
            throw new SourJsonException(e);
        }
    }
}