cc.kave.commons.utils.json.LocalDateTimeConverter.java Source code

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Here is the source code for cc.kave.commons.utils.json.LocalDateTimeConverter.java

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/**
 * Copyright 2016 Technische Universitt Darmstadt
 * 
 * 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 cc.kave.commons.utils.json;

import java.lang.reflect.Type;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.time.format.DateTimeFormatterBuilder;

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;

public class LocalDateTimeConverter implements JsonSerializer<LocalDateTime>, JsonDeserializer<LocalDateTime> {

    @Override
    public JsonElement serialize(LocalDateTime src, Type typeOfSrc, JsonSerializationContext context) {
        return new JsonPrimitive(DateTimeFormatter.ISO_LOCAL_DATE_TIME.format(src));
    }

    @Override
    public LocalDateTime deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
            throws JsonParseException {
        DateTimeFormatter fmt = new DateTimeFormatterBuilder().append(DateTimeFormatter.ISO_LOCAL_DATE_TIME)
                .optionalStart().appendOffset("+HH:mm", "").optionalEnd().toFormatter();
        return fmt.parse(json.getAsString(), LocalDateTime::from);
    }
}