com.fatboyindustrial.gsonjavatime.InstantConverter Maven / Gradle / Ivy

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package com.fatboyindustrial.gsonjavatime;

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

import java.lang.reflect.Type;
import java.time.Instant;
import java.time.format.DateTimeFormatter;

/**
 * GSON serialiser/deserialiser for converting {@link Instant} objects.
 */
public class InstantConverter implements JsonSerializer, JsonDeserializer
{

  private static final DateTimeFormatter FORMATTER = DateTimeFormatter.ISO_INSTANT;
  
  @Override
  public JsonElement serialize(Instant src, Type typeOfSrc, JsonSerializationContext context)
  {
    return new JsonPrimitive(FORMATTER.format(src));
  }

  @Override
  public Instant deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException
  {
    return FORMATTER.parse(json.getAsString(), Instant::from);
  }
}