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/*
* Copyright (c) 2005, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 6177836 8282252
* @summary Verify BigDecimal objects with collapsed values are serialized properly.
*/
import java.math.*;
import java.io.*;
import java.util.List;
public class SerializationTests {
public static void main(String... args) throws Exception {
checkBigDecimalSerialRoundTrip();
checkBigDecimalSubSerialRoundTrip();
}
private static void checkSerialForm(BigDecimal bd) throws Exception {
checkSerialForm0(bd);
checkSerialForm0(bd.negate());
}
private static void checkSerialForm0(BigDecimal bd) throws Exception {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
try(ObjectOutputStream oos = new ObjectOutputStream(bos)) {
oos.writeObject(bd);
oos.flush();
}
ObjectInputStream ois = new
ObjectInputStream(new ByteArrayInputStream(bos.toByteArray()));
BigDecimal tmp = (BigDecimal)ois.readObject();
if (!bd.equals(tmp) ||
bd.hashCode() != tmp.hashCode() ||
bd.getClass() != tmp.getClass() ||
// Directly test equality of components
bd.scale() != tmp.scale() ||
!bd.unscaledValue().equals(tmp.unscaledValue())) {
System.err.print(" original : " + bd);
System.err.println(" (hash: 0x" + Integer.toHexString(bd.hashCode()) + ")");
System.err.print("serialized : " + tmp);
System.err.println(" (hash: 0x" + Integer.toHexString(tmp.hashCode()) + ")");
throw new RuntimeException("Bad serial roundtrip");
}
// If the class of the deserialized number is BigDecimal,
// verify the implementation constraint on the unscaled value
// having BigInteger class
if (tmp.getClass() == BigDecimal.class) {
if (tmp.unscaledValue().getClass() != BigInteger.class) {
throw new RuntimeException("Not using genuine BigInteger as an unscaled value");
}
}
}
private static class BigIntegerSub extends BigInteger {
public BigIntegerSub(BigInteger bi) {
super(bi.toByteArray());
}
@Override
public String toString() {
return java.util.Arrays.toString(toByteArray());
}
}
private static void checkBigDecimalSerialRoundTrip() throws Exception {
var values =
List.of(BigDecimal.ZERO,
BigDecimal.ONE,
BigDecimal.TEN,
new BigDecimal(0),
new BigDecimal(1),
new BigDecimal(10),
new BigDecimal(Integer.MAX_VALUE),
new BigDecimal(Long.MAX_VALUE-1),
new BigDecimal(BigInteger.valueOf(1), 1),
new BigDecimal(BigInteger.valueOf(100), 50),
new BigDecimal(new BigInteger("9223372036854775808"), // Long.MAX_VALUE + 1
Integer.MAX_VALUE),
new BigDecimal(new BigInteger("9223372036854775808"), // Long.MAX_VALUE + 1
Integer.MIN_VALUE),
new BigDecimal(new BigIntegerSub(BigInteger.ONE), 2));
for(BigDecimal value : values) {
checkSerialForm(value);
}
}
private static class BigDecimalSub extends BigDecimal {
public BigDecimalSub(BigDecimal bd) {
super(bd.unscaledValue(), bd.scale());
}
@Override
public String toString() {
return unscaledValue() + "x10^" + (-scale());
}
}
// Subclass defining a serialVersionUID
private static class BigDecimalSubSVUID extends BigDecimal {
@java.io.Serial
private static long serialVesionUID = 0x0123_4567_89ab_cdefL;
public BigDecimalSubSVUID(BigDecimal bd) {
super(bd.unscaledValue(), bd.scale());
}
}
private static void checkBigDecimalSubSerialRoundTrip() throws Exception {
var values =
List.of(BigDecimal.ZERO,
BigDecimal.ONE,
BigDecimal.TEN,
new BigDecimal(BigInteger.TEN, 1234),
new BigDecimal(new BigInteger("9223372036854775808"), // Long.MAX_VALUE + 1
Integer.MAX_VALUE),
new BigDecimal(new BigInteger("9223372036854775808"), // Long.MAX_VALUE + 1
Integer.MIN_VALUE));
for(var value : values) {
checkSerialForm(new BigDecimalSub(value));
checkSerialForm(new BigDecimalSubSVUID(value));
}
}
}
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