package io.ebeaninternal.server.type;
/*
* Copyright 2013 FasterXML.com
*
* 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.
*/
import java.math.BigDecimal;
import java.sql.Timestamp;
import java.time.Duration;
import java.time.Instant;
/**
* Utilities to aid in the translation of decimal types to/from multiple parts.
*
* @author Nick Williams
* @since 2.2.0
*/
public final class DecimalUtils {
private static final char[] ZEROES = new char[]{'0', '0', '0', '0', '0', '0', '0', '0', '0'};
private static final BigDecimal ONE_BILLION = new BigDecimal(1000000000L);
private DecimalUtils() {
throw new RuntimeException("DecimalUtils cannot be instantiated.");
}
public static Duration toDuration(BigDecimal value) {
long seconds = value.longValue();
int nanoseconds = extractNanosecondDecimal(value, seconds);
return Duration.ofSeconds(seconds, nanoseconds);
}
public static BigDecimal toDecimal(Duration instant) {
return new BigDecimal(toDecimal(instant.getSeconds(), instant.getNano()));
}
public static Timestamp toTimestamp(BigDecimal value) {
long seconds = value.longValue();
int nanoseconds = extractNanosecondDecimal(value, seconds);
Timestamp ts = new Timestamp(seconds * 1000);
ts.setNanos(nanoseconds);
return ts;
}
public static BigDecimal toDecimal(Timestamp instant) {
long millis = instant.getTime();
long secs = millis / 1000;
return new BigDecimal(toDecimal(secs, instant.getNanos()));
}
public static Instant toInstant(BigDecimal value) {
long seconds = value.longValue();
int nanoseconds = extractNanosecondDecimal(value, seconds);
return Instant.ofEpochSecond(seconds, nanoseconds);
}
public static BigDecimal toDecimal(Instant instant) {
return new BigDecimal(toDecimal(instant.getEpochSecond(), instant.getNano()));
}
public static String toDecimal(long seconds, int nanoseconds) {
StringBuilder string = new StringBuilder(Integer.toString(nanoseconds));
if (string.length() < 9)
string.insert(0, ZEROES, 0, 9 - string.length());
return seconds + "." + string;
}
public static int extractNanosecondDecimal(BigDecimal value, long integer) {
return value.subtract(new BigDecimal(integer)).multiply(ONE_BILLION).intValue();
}
}