org.apache.calcite.avatica.util.TimeUnit Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to you 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.apache.calcite.avatica.util;
import java.math.BigDecimal;
/**
* Enumeration of time units used to construct an interval.
*/
public enum TimeUnit {
YEAR(true, ' ', 12 /* months */, null),
MONTH(true, '-', 1 /* months */, BigDecimal.valueOf(12)),
DAY(false, '-', DateTimeUtils.MILLIS_PER_DAY, null),
HOUR(false, ' ', DateTimeUtils.MILLIS_PER_HOUR, BigDecimal.valueOf(24)),
MINUTE(false, ':', DateTimeUtils.MILLIS_PER_MINUTE, BigDecimal.valueOf(60)),
SECOND(false, ':', DateTimeUtils.MILLIS_PER_SECOND, BigDecimal.valueOf(60));
public final boolean yearMonth;
public final char separator;
public final long multiplier;
private final BigDecimal limit;
private static final TimeUnit[] CACHED_VALUES = values();
TimeUnit(boolean yearMonth, char separator, long multiplier,
BigDecimal limit) {
this.yearMonth = yearMonth;
this.separator = separator;
this.multiplier = multiplier;
this.limit = limit;
}
/**
* Returns the TimeUnit associated with an ordinal. The value returned
* is null if the ordinal is not a member of the TimeUnit enumeration.
*/
public static TimeUnit getValue(int ordinal) {
return ordinal < 0 || ordinal >= CACHED_VALUES.length
? null
: CACHED_VALUES[ordinal];
}
/**
* Returns whether a given value is valid for a field of this time unit.
*
* @param field Field value
* @return Whether value
*/
public boolean isValidValue(BigDecimal field) {
return field.compareTo(BigDecimal.ZERO) >= 0
&& (limit == null
|| field.compareTo(limit) < 0);
}
}
// End TimeUnit.java