private FieldToRowDataConverter createDecimalConverter(DecimalType decimalType) {
        final int precision = decimalType.getPrecision();
        final int scale = decimalType.getScale();
        return origStr -> DecimalData.fromBigDecimal(new BigDecimal(origStr), precision, scale);
    }
Creates a runtime converter which assuming input object is not null.
inlong-sort/sort-formats/format-rowdata/format-rowdata-json/src/main/java/org/apache/inlong/sort/formats/json/FieldToRowDataConverters.java