package com.whn.hellospring.handler;

import org.apache.ibatis.type.BaseTypeHandler;
import org.apache.ibatis.type.JdbcType;
import org.joda.money.CurrencyUnit;
import org.joda.money.Money;

import java.sql.CallableStatement;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

/**
 * 在Money与Long之间转换的TypeHandler,处理CNY和人民币
 */
public class MoneyTypeHandler extends BaseTypeHandler<Money> {
    @Override
    public void setNonNullParameter(PreparedStatement preparedStatement, int i, Money money, JdbcType jdbcType) throws SQLException {
        preparedStatement.setLong(i,money.getAmountMinorLong()); //存储为Long类型，精确到分
    }

    @Override
    public Money getNullableResult(ResultSet resultSet, String s) throws SQLException {
        return parseMoney(resultSet.getLong(s));
    }

    @Override
    public Money getNullableResult(ResultSet resultSet, int i) throws SQLException {
        return parseMoney(resultSet.getLong(i));
    }

    @Override
    public Money getNullableResult(CallableStatement callableStatement, int i) throws SQLException {
        return parseMoney(callableStatement.getLong(i));
    }

    /**
     * 将Long值转换为Money
     */
    private Money parseMoney(Long value){
        return Money.ofMinor(CurrencyUnit.of("CNY"),value);
    }

}