com.github.housepower.jdbc.misc.DateTimeHelper Maven / Gradle / Ivy

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/*
 * 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.github.housepower.jdbc.misc;

import com.github.housepower.jdbc.connect.PhysicalInfo;
import com.github.housepower.jdbc.settings.SettingKey;

import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.ZonedDateTime;

public class DateTimeHelper {

    public static ZoneId chooseTimeZone(PhysicalInfo.ServerInfo serverInfo) {
        return (boolean) serverInfo.getConfigure().settings().getOrDefault(SettingKey.use_client_time_zone, false)
                ? ZoneId.systemDefault() : serverInfo.timeZone();
    }

    public static LocalDateTime convertTimeZone(LocalDateTime localDateTime, ZoneId from, ZoneId to) {
        return localDateTime.atZone(from).withZoneSameInstant(to).toLocalDateTime();
    }

    public static long toEpochMilli(ZonedDateTime zdt) {
        return zdt.toInstant().toEpochMilli();
    }
}