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package org.hsqldb.types;
import org.hsqldb.error.
Error;
import org.hsqldb.error.
ErrorCode;
/**
* Implementation of data item for INTERVAL SECOND.<p>
*
* @author Fred Toussi (fredt@users dot sourceforge.net)
* @version 2.3.0
* @since 1.9.0
*/
public class
IntervalSecondData {
public static final
IntervalSecondData oneDay =
newIntervalDay(1,
Type.
SQL_INTERVAL_DAY);
//
final long
units;
final int
nanos;
public static
IntervalSecondData newInterval(double
value, int
typeCode) {
int
index =
DTIType.
intervalIndexMap.
get(
typeCode);
value *=
DTIType.
yearToSecondFactors[
index];
return new
IntervalSecondData((long)
value, 0);
}
public static
IntervalSecondData newIntervalDay(long
days,
IntervalType type) {
return new
IntervalSecondData(
days * 24 * 60 * 60, 0,
type);
}
public static
IntervalSecondData newIntervalHour(long
hours,
IntervalType type) {
return new
IntervalSecondData(
hours * 60 * 60, 0,
type);
}
public static
IntervalSecondData newIntervalMinute(long
minutes,
IntervalType type) {
return new
IntervalSecondData(
minutes * 60, 0,
type);
}
public static
IntervalSecondData newIntervalSeconds(long
seconds,
IntervalType type) {
return new
IntervalSecondData(
seconds, 0,
type);
}
public
IntervalSecondData(long
seconds, int
nanos,
IntervalType type) {
if (
seconds >=
type.
getIntervalValueLimit()) {
throw
Error.
error(
ErrorCode.
X_22015);
}
this.
units =
seconds;
this.
nanos =
nanos;
}
public
IntervalSecondData(long
seconds, int
nanos) {
this.
units =
seconds;
this.
nanos =
nanos;
}
/**
* normalise is a marker, values are always normalised
*/
public
IntervalSecondData(long
seconds, long
nanos,
IntervalType type,
boolean
normalise) {
if (
nanos >=
DTIType.
limitNanoseconds) {
long
carry =
nanos /
DTIType.
limitNanoseconds;
nanos =
nanos %
DTIType.
limitNanoseconds;
seconds +=
carry;
} else if (
nanos <= -
DTIType.
limitNanoseconds) {
long
carry = -
nanos /
DTIType.
limitNanoseconds;
nanos = -(-
nanos %
DTIType.
limitNanoseconds);
seconds -=
carry;
}
int
scaleFactor =
DTIType.
nanoScaleFactors[
type.
scale];
nanos /=
scaleFactor;
nanos *=
scaleFactor;
if (
seconds > 0 &&
nanos < 0) {
nanos +=
DTIType.
limitNanoseconds;
seconds--;
} else if (
seconds < 0 &&
nanos > 0) {
nanos -=
DTIType.
limitNanoseconds;
seconds++;
}
scaleFactor =
DTIType.
yearToSecondFactors[
type.
endPartIndex];
seconds /=
scaleFactor;
seconds *=
scaleFactor;
if (
seconds >=
type.
getIntervalValueLimit()) {
throw
Error.
error(
ErrorCode.
X_22015);
}
this.
units =
seconds;
this.
nanos = (int)
nanos;
}
public boolean
equals(
Object other) {
if (
other instanceof
IntervalSecondData) {
return
units == ((
IntervalSecondData)
other).
units
&&
nanos == ((
IntervalSecondData)
other).
nanos;
}
return false;
}
public int
hashCode() {
return (int)
units ^
nanos;
}
public int
compareTo(
IntervalSecondData b) {
if (
units >
b.
units) {
return 1;
} else if (
units <
b.
units) {
return -1;
} else {
if (
nanos >
b.
nanos) {
return 1;
} else if (
nanos <
b.
nanos) {
return -1;
} else {
return 0;
}
}
}
public long
getSeconds() {
return
units;
}
public int
getNanos() {
return
nanos;
}
public
String toString() {
return
Type.
SQL_INTERVAL_SECOND_MAX_FRACTION_MAX_PRECISION
.
convertToString(this);
}
}