@Override
    public BigInteger toJavaType(Column column, Class<?> entityType, Blob value) {
        if (value == null) return null;
        try {
            final byte[] bytes = value.getBytes(1, Math.toIntExact(value.length()));
            return new BigInteger(bytes);
        } catch (final SQLException ex) {
            throw new SpeedmentTypeMapperException(
                "Error mapping Blob to BigInteger.", ex);
        }
    }
Maps between a large integer stored in binary form into a java
{@link BigDecimal}.

@author Emil Forslund
@since  3.0.23
runtime-parent/runtime-typemapper/src/main/java/com/speedment/runtime/typemapper/largeobject/BlobToBigIntegerMapper.java