in flink-connector-hbase-base/src/main/java/org/apache/flink/connector/hbase/util/HBaseSerde.java [429:453]
private static FieldDecoder createNullableFieldDecoder(
LogicalType fieldType, final byte[] nullStringBytes) {
final FieldDecoder decoder = createFieldDecoder(fieldType);
if (fieldType.isNullable()) {
if (fieldType.is(LogicalTypeFamily.CHARACTER_STRING)) {
return value -> {
if (value == null || Arrays.equals(value, nullStringBytes)) {
return null;
} else {
return decoder.decode(value);
}
};
} else {
return value -> {
if (value == null || value.length == 0) {
return null;
} else {
return decoder.decode(value);
}
};
}
} else {
return decoder;
}
}