org.h2.util.JSR310 Maven / Gradle / Ivy
/*
* Copyright 2004-2019 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (https://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.util;
/**
* This utility class to check presence of JSR 310.
*/
public class JSR310 {
/**
* {@code Class} or {@code null}.
*/
public static final Class LOCAL_DATE;
/**
* {@code Class} or {@code null}.
*/
public static final Class LOCAL_TIME;
/**
* {@code Class} or {@code null}.
*/
public static final Class LOCAL_DATE_TIME;
/**
* {@code Class} or {@code null}.
*/
public static final Class INSTANT;
/**
* {@code Class} or {@code null}.
*/
public static final Class OFFSET_DATE_TIME;
/**
* {@code Class} or {@code null}.
*/
public static final Class ZONED_DATE_TIME;
/**
* {@code Class} or {@code null}.
*/
public static final Class OFFSET_TIME;
/**
* {@code Class} or {@code null}.
*/
public static final Class PERIOD;
/**
* {@code Class} or {@code null}.
*/
public static final Class DURATION;
/**
* Whether the JSR 310 date and time API present in the JRE.
*/
public static final boolean PRESENT;
static {
boolean present = false;
Class localDate = null, localTime = null, localDateTime = null, instant = null, offsetDateTime = null,
zonedDateTime = null, offsetTime = null, period = null, duration = null;
try {
localDate = Class.forName("java.time.LocalDate");
localTime = Class.forName("java.time.LocalTime");
localDateTime = Class.forName("java.time.LocalDateTime");
instant = Class.forName("java.time.Instant");
offsetDateTime = Class.forName("java.time.OffsetDateTime");
zonedDateTime = Class.forName("java.time.ZonedDateTime");
offsetTime = Class.forName("java.time.OffsetTime");
period = Class.forName("java.time.Period");
duration = Class.forName("java.time.Duration");
present = true;
} catch (Throwable t) {
// Ignore
}
LOCAL_DATE = localDate;
LOCAL_TIME = localTime;
LOCAL_DATE_TIME = localDateTime;
INSTANT = instant;
OFFSET_DATE_TIME = offsetDateTime;
ZONED_DATE_TIME = zonedDateTime;
OFFSET_TIME = offsetTime;
PERIOD = period;
DURATION = duration;
PRESENT = present;
}
private JSR310() {
}
}