com.github.messenger4j.internal.gson.OptionalInstantToSecondsStringSerializer Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of messenger4j Show documentation

A Java library for building Chatbots on the Facebook Messenger Platform - easy and fast

The newest version!

package com.github.messenger4j.internal.gson;

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.Instant;
import java.util.Optional;

/**
 * @author Max Grabenhorst
 * @since 1.0.0
 */
public final class OptionalInstantToSecondsStringSerializer
    implements JsonSerializer> {

  @Override
  public JsonElement serialize(
      Optional src, Type typeOfSrc, JsonSerializationContext context) {
    return src.map(instant -> new JsonPrimitive(Long.toString(instant.getEpochSecond())))
        .orElse(null);
  }
}