com.vmware.xenon.common.serialization.InstantConverter Maven / Gradle / Ivy
/*
* Copyright (c) 2014-2015 VMware, Inc. All Rights Reserved.
*
* 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 com.vmware.xenon.common.serialization;
import java.lang.reflect.Type;
import java.time.Instant;
import java.time.format.DateTimeFormatter;
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 com.google.gson.reflect.TypeToken;
/**
* GSON {@link JsonSerializer}/{@link JsonDeserializer} for representing {@link Instant}s as JSON
* strings.
*/
public enum InstantConverter
implements JsonSerializer, JsonDeserializer {
INSTANCE;
private static final DateTimeFormatter FORMATTER = DateTimeFormatter.ISO_INSTANT;
public static final Type TYPE = new TypeToken() {}.getType();
@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);
}
}