/*
 * Copyright 2008-present MongoDB, Inc.
 * Copyright 2018 Cezary Bartosiak
 *
 * 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.bson.codecs.jsr310;

import org.bson.BsonReader;
import org.bson.BsonWriter;
import org.bson.codecs.DecoderContext;
import org.bson.codecs.EncoderContext;
import org.bson.codecs.configuration.CodecConfigurationException;

import java.time.Instant;
import java.time.LocalDateTime;
import java.time.ZoneOffset;

import static java.lang.String.format;

LocalDateTime Codec.

Encodes and decodes LocalDateTime objects to and from DateTime. Data is stored to millisecond accuracy.

Converts the LocalDateTime values to and from ZoneOffset.UTC.

Note: Requires Java 8 or greater.

@mongodb.driver.manualreference/bson-types
Since:3.7
/** * LocalDateTime Codec. * * <p>Encodes and decodes {@code LocalDateTime} objects to and from {@code DateTime}. Data is stored to millisecond accuracy.</p> * <p>Converts the {@code LocalDateTime} values to and from {@link ZoneOffset#UTC}.</p> * <p>Note: Requires Java 8 or greater.</p> * * @mongodb.driver.manual reference/bson-types * @since 3.7 */
public class LocalDateTimeCodec extends DateTimeBasedCodec<LocalDateTime> { @Override public LocalDateTime decode(final BsonReader reader, final DecoderContext decoderContext) { return Instant.ofEpochMilli(validateAndReadDateTime(reader)).atZone(ZoneOffset.UTC).toLocalDateTime(); }
{@inheritDoc}

Converts the LocalDateTime to ZoneOffset.UTC via ChronoLocalDateTime<LocalDate>.toInstant(ZoneOffset).

Throws:
/** * {@inheritDoc} * <p>Converts the {@code LocalDateTime} to {@link ZoneOffset#UTC} via {@link LocalDateTime#toInstant(ZoneOffset)}.</p> * @throws CodecConfigurationException if the LocalDateTime cannot be converted to a valid Bson DateTime. */
@Override public void encode(final BsonWriter writer, final LocalDateTime value, final EncoderContext encoderContext) { try { writer.writeDateTime(value.toInstant(ZoneOffset.UTC).toEpochMilli()); } catch (ArithmeticException e) { throw new CodecConfigurationException(format("Unsupported LocalDateTime value '%s' could not be converted to milliseconds: %s", value, e.getMessage()), e); } } @Override public Class<LocalDateTime> getEncoderClass() { return LocalDateTime.class; } }