com.gooddata.util.GDDateTimeSerializer Maven / Gradle / Ivy

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/**
 * Copyright (C) 2004-2016, GoodData(R) Corporation. All rights reserved.
 * This source code is licensed under the BSD-style license found in the
 * LICENSE.txt file in the root directory of this source tree.
 */
package com.gooddata.util;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;
import org.joda.time.format.DateTimeFormatter;
import org.joda.time.format.DateTimeFormatterBuilder;
import org.joda.time.format.ISODateTimeFormat;

import java.io.IOException;

/**
 * Serializes Joda's {@link DateTime} fields to the GoodDate date time format in the UTC timezone (yyyy-MM-dd HH:mm:ss.SSSZ).
 */
public class GDDateTimeSerializer extends JsonSerializer {

    static final DateTimeFormatter FORMATTER = new DateTimeFormatterBuilder()
            .append(ISODateTimeFormat.date())
            .appendLiteral(' ')
            .append(ISODateTimeFormat.hourMinuteSecond())
            .toFormatter().withZone(DateTimeZone.UTC);

    @Override
    public void serialize(DateTime value, JsonGenerator gen, SerializerProvider arg2) throws IOException {
        gen.writeString(FORMATTER.print(value));
    }

}