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Fix a bug that fails to serialize BigDecimal by komamitsu · Pull Request #540 · msgpack/msgpack-java · GitHub

/ msgpack-java Public

Fix a bug that fails to serialize BigDecimal #540

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Merged
komamitsu merged 1 commit into from
Dec 17, 2020
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Fix a bug that fails to serialize BigDecimal #540

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3 changes: 2 additions & 1 deletion msgpack-jackson/src/main/java/org/msgpack/jackson/dataformat/MessagePackGenerator.java
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Original file line number Diff line number Diff line change
Expand Up @@ -270,7 +270,8 @@ private void packBigDecimal(BigDecimal decimal)
if (failedToPackAsBI) {
double doubleValue = decimal.doubleValue();
//Check to make sure this BigDecimal can be represented as a double
if (!decimal.stripTrailingZeros().toEngineeringString().equals(BigDecimal.valueOf(doubleValue).toEngineeringString())) {
if (!decimal.stripTrailingZeros().toEngineeringString().equals(
BigDecimal.valueOf(doubleValue).stripTrailingZeros().toEngineeringString())) {
throw new IllegalArgumentException("MessagePack cannot serialize a BigDecimal that can't be represented as double. " + decimal);
}
messagePacker.packDouble(doubleValue);
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3 changes: 3 additions & 0 deletions msgpack-jackson/src/test/java/org/msgpack/jackson/dataformat/MessagePackGeneratorTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -304,10 +304,12 @@ public void testBigDecimal()
double d0 = 1.23456789;
double d1 = 1.23450000000000000000006789;
String d2 = "12.30";
String d3 = "0.00001";
List<BigDecimal> bigDecimals = Arrays.asList(
BigDecimal.valueOf(d0),
BigDecimal.valueOf(d1),
new BigDecimal(d2),
new BigDecimal(d3),
BigDecimal.valueOf(Double.MIN_VALUE),
BigDecimal.valueOf(Double.MAX_VALUE),
BigDecimal.valueOf(Double.MIN_NORMAL)
Expand All @@ -320,6 +322,7 @@ public void testBigDecimal()
assertEquals(d0, unpacker.unpackDouble(), 0.000000000000001);
assertEquals(d1, unpacker.unpackDouble(), 0.000000000000001);
assertEquals(Double.valueOf(d2), unpacker.unpackDouble(), 0.000000000000001);
assertEquals(Double.valueOf(d3), unpacker.unpackDouble(), 0.000000000000001);
assertEquals(Double.MIN_VALUE, unpacker.unpackDouble(), 0.000000000000001);
assertEquals(Double.MAX_VALUE, unpacker.unpackDouble(), 0.000000000000001);
assertEquals(Double.MIN_NORMAL, unpacker.unpackDouble(), 0.000000000000001);
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