services/dlab-utils/src/main/java/com/epam/dlab/util/mongo/IsoDateSerializer.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.epam.dlab.util.mongo;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;

import java.io.IOException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;

/**
 * Serializes the {@link java.util.Date} to JSON
 */
public class IsoDateSerializer extends JsonSerializer<Date> {

    @Override
    public void serialize(Date date, JsonGenerator gen, SerializerProvider serializers) throws IOException {
        DateFormat df = new SimpleDateFormat(IsoDateDeSerializer.ISO_DATE_FORMAT);
        df.setTimeZone(TimeZone.getTimeZone("GMT"));
        String dateValue = df.format(date);

        gen.writeStartObject();
        gen.writeFieldName(IsoDateDeSerializer.DATE_NODE);
        gen.writeString(dateValue);
        gen.writeEndObject();
    }
}