org.microworld.mangopay.implementation.serialization.LocalDateAdapter.java Source code

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Here is the source code for org.microworld.mangopay.implementation.serialization.LocalDateAdapter.java

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/**
 * Copyright  2015 MicroWorld (contact@microworld.org)
 *
 * 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 org.microworld.mangopay.implementation.serialization;

import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonPrimitive;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;

import java.lang.reflect.Type;
import java.time.LocalDate;

public class LocalDateAdapter implements JsonSerializer<LocalDate>, JsonDeserializer<LocalDate> {
    private static final long SECONDS_PER_DAY = 86400;

    public static long toTimestamp(final LocalDate date) {
        return date.toEpochDay() * SECONDS_PER_DAY;
    }

    public static LocalDate toLocalDate(final long timestamp) {
        return LocalDate.ofEpochDay(Math.floorDiv(timestamp, SECONDS_PER_DAY));
    }

    @Override
    public JsonElement serialize(final LocalDate src, final Type typeOfSrc,
            final JsonSerializationContext context) {
        return new JsonPrimitive(toTimestamp(src));
    }

    @Override
    public LocalDate deserialize(final JsonElement json, final Type typeOfT,
            final JsonDeserializationContext context) {
        return toLocalDate(json.getAsLong());
    }
}