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[FLINK-36999][cdc-source-connectors] When the source type is oracle and field type is nember and the value is null, a null pointer exception occurs during deserialization. #3833

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Merged
merged 2 commits into from
May 15, 2025
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[FLINK-36999][cdc-source-connectors] When the source type is oracle and field type is nember and the value is null, a null pointer exception occurs during deserialization. #3833

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[FLINK-36999][cdc-source-connectors] When the source field type is de…
Apr 22, 2025
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[FLINK-36999][cdc-source-connectors] When the source field type is de…
GOODBOY008 May 15, 2025
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4 changes: 4 additions & 0 deletions ...um/src/main/java/org/apache/flink/cdc/debezium/event/DebeziumSchemaDataTypeInference.java
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Original file line number Diff line number Diff line change
Expand Up @@ -188,6 +188,10 @@ protected DataType inferBytes(Object value, Schema schema) {
protected DataType inferStruct(Object value, Schema schema) {
Struct struct = (Struct) value;
if (VariableScaleDecimal.LOGICAL_NAME.equals(schema.name())) {
if (struct == null) {
// set the default value
return DataTypes.DECIMAL(DecimalType.DEFAULT_PRECISION, DecimalType.DEFAULT_SCALE);
}
SpecialValueDecimal decimal = VariableScaleDecimal.toLogical(struct);
BigDecimal bigDecimal = decimal.getDecimalValue().orElse(BigDecimal.ZERO);
return DataTypes.DECIMAL(bigDecimal.precision(), bigDecimal.scale());
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6 changes: 5 additions & 1 deletion ...cdc/src/test/java/org/apache/flink/cdc/connectors/oracle/table/OracleConnectorITCase.java
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Original file line number Diff line number Diff line change
Expand Up @@ -638,6 +638,9 @@ void testConsumingNumericColumns(boolean parallelismSnapshot) throws Exception {
statement.execute(
"INSERT INTO debezium.test_numeric_table "
+ "VALUES (11000000001, 1, 99, 9999, 987654321, 20000000000000000001, 987654321.87654321, 2147483648, 1024.965, 1024.965)");
statement.execute(
"INSERT INTO debezium.test_numeric_table "
+ "VALUES (11000000002, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL)");
}

String sourceDDL =
Expand Down Expand Up @@ -709,7 +712,8 @@ void testConsumingNumericColumns(boolean parallelismSnapshot) throws Exception {
List<String> expected =
Arrays.asList(
"+I[11000000000, false, 98, 9998, 987654320, 20000000000000000000, 987654321.12345678, 2147483647, 1024.955, 1024.955]",
"+I[11000000001, true, 99, 9999, 987654321, 20000000000000000001, 987654321.87654321, 2147483648, 1024.965, 1024.965]");
"+I[11000000001, true, 99, 9999, 987654321, 20000000000000000001, 987654321.87654321, 2147483648, 1024.965, 1024.965]",
"+I[11000000002, null, null, null, null, null, null, null, null, null]");

List<String> actual = TestValuesTableFactory.getRawResultsAsStrings("test_numeric_sink");
Assertions.assertThat(actual).containsExactlyInAnyOrderElementsOf(expected);
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