Numeric types mapping issue in Spring Data R2dbc with postgres - postgresql

Question

I tried to use Spring Data R2dbc/Postgres in a sample application.
Spring Boot 2.4.0-M2
R2dbc Postgres (managed by Spring Boot)
Spring Data R2dbc 1.2.0-M2(managed by Spring Boot)
The table scripts.
CREATE SEQUENCE IF NOT EXISTS ORDERS_ID_SEQ;
CREATE TABLE IF NOT EXISTS ORDERS(
ID INTEGER NOT NULL PRIMARY KEY DEFAULT nextval('ORDERS_ID_SEQ') ,
CUST_ID BIGINT NOT NULL,
AMOUNT REAL NOT NULL
);
ALTER SEQUENCE ORDERS_ID_SEQ OWNED BY ORDERS.ID;
The data.sql:
-- INSERT SAMPLE DATA
DELETE FROM ORDERS;
INSERT INTO ORDERS(CUST_ID, AMOUNT) VALUES (1, 100.2);
I use a ResourceDatabasePopulator to populate the data, it works.
But when I was trying to save the data by Repository, failed.
#Table(value = "ORDERS")
#Data
#Builder
#NoArgsConstructor
#AllArgsConstructor
public class Order implements Serializable {
#Id
#Column(value = "ID")
private Integer id;
#Column(value = "CUST_ID")
private Long customerId;
// use BigDecimal or Java Money API in the real-world application.
#Column(value = "AMOUNT")
private Double amount;
}
public interface OrderRepository extends R2dbcRepository<Order,Integer> {
}
// in application runner.
orders .save(Order.builder().customerId(c.getId()).amount(201.0).build())
It threw an exception like this:
reactor.core.Exceptions$ErrorCallbackNotImplemented: java.lang.UnsupportedOperationException: Binding parameters is not supported for the statement 'INSERT INTO ORDERS (CUST_ID, AMOUNT) VALUES (?, ?)'
Caused by: java.lang.UnsupportedOperationException: Binding parameters is not supported for the statement 'INSERT INTO ORDERS (CUST_ID, AMOUNT) VALUES (?, ?)'
at io.r2dbc.postgresql.SimpleQueryPostgresqlStatement.bind(SimpleQueryPostgresqlStatement.java:78) ~[r2dbc-postgresql-0.8.4.RELEASE.jar:0.8.4.RELEASE]
at io.r2dbc.postgresql.SimpleQueryPostgresqlStatement.bind(SimpleQueryPostgresqlStatement.java:44) ~[r2dbc-postgresql-0.8.4.RELEASE.jar:0.8.4.RELEASE]
The complete codes is here.
Updated: Give up extending from AbstractR2dbcConfiguration, and get resovled when following the official guide.