/*
* Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, version 2.0, as published by the
* Free Software Foundation.
*
* This program is also distributed with certain software (including but not
* limited to OpenSSL) that is licensed under separate terms, as designated in a
* particular file or component or in included license documentation. The
* authors of MySQL hereby grant you an additional permission to link the
* program and your derivative works with the separately licensed software that
* they have included with MySQL.
*
* Without limiting anything contained in the foregoing, this file, which is
* part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
* version 1.0, a copy of which can be found at
* http://oss.oracle.com/licenses/universal-foss-exception.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License, version 2.0,
* for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package com.mysql.cj.result;
import java.math.
BigDecimal;
import java.math.
BigInteger;
import java.nio.
ByteBuffer;
import com.mysql.cj.conf.
PropertySet;
/**
* A value factory for creating {@link java.math.BigDecimal} values.
*/
public class
BigDecimalValueFactory extends
AbstractNumericValueFactory<
BigDecimal> {
int
scale;
boolean
hasScale;
public
BigDecimalValueFactory(
PropertySet pset) {
super(
pset);
}
public
BigDecimalValueFactory(
PropertySet pset, int
scale) {
super(
pset);
this.
scale =
scale;
this.
hasScale = true;
}
/**
* Adjust the result value by apply the scale, if appropriate.
*
* @param d
* value
* @return result
*/
private
BigDecimal adjustResult(
BigDecimal d) {
if (this.
hasScale) {
try {
return
d.
setScale(this.
scale);
} catch (
ArithmeticException ex) {
// try this if above fails
return
d.
setScale(this.
scale,
BigDecimal.
ROUND_HALF_UP);
}
}
return
d;
}
@
Override
public
BigDecimal createFromBigInteger(
BigInteger i) {
return
adjustResult(new
BigDecimal(
i));
}
@
Override
public
BigDecimal createFromLong(long
l) {
return
adjustResult(
BigDecimal.
valueOf(
l));
}
@
Override
public
BigDecimal createFromBigDecimal(
BigDecimal d) {
return
adjustResult(
d);
}
@
Override
public
BigDecimal createFromDouble(double
d) {
return
adjustResult(
BigDecimal.
valueOf(
d));
}
@
Override
public
BigDecimal createFromBit(byte[]
bytes, int
offset, int
length) {
return new
BigDecimal(new
BigInteger(
ByteBuffer.
allocate(
length + 1).
put((byte) 0).
put(
bytes,
offset,
length).
array()));
}
public
String getTargetTypeName() {
return
BigDecimal.class.
getName();
}
}