重写mybatis-plus的saveUpdate方法

重写mybatis-plus的saveUpdate方法

1.问题出现

同步外部数据的时候，如果需要同步逻辑删除的数据，mybatis-plus的saveOrUpdate||saveOrUpdateBath方法底层根据先查出数据数据是否存在，存在则更新不存在则新增，数据逻辑删除时，mybatis-plus查询不出来会执行插入造成主键冲突异常

2.问题解决（重写方法）

Mapper.java

public interface MdmCustomerBankInfoMapper extends BaseMapper<MdmCustomerBankInfo> {
    int saveOrUpdate(MdmCustomerBankInfo list);
    int saveOrUpdateBatch(List<MdmCustomerBankInfo> list);
}

Mapper.xml

saveOrUpdate

    <update id="selfSaveOrUpdateBatch">
        INSERT INTO mdm_customer_bank_info (id,customer_id,account_holder_name,bank_country,bank_account_num,bank_name,
        bank_branch_code,created_by,created_time,updated_by,updated_time,is_deleted) SELECT * FROM (
            SELECT
            #{item.id} as id,
            #{item.customerId} as customer_id,
            #{item.accountHolderName} as account_holder_name,
            #{item.bankCountry} as bank_country,
            #{item.bankAccountNum} as bank_account_num,
            #{item.bankName} as bank_name,
            #{item.bankBranchCode} as bank_branch_code,
            #{item.createdBy} as created_by,
            #{item.createdTime} as created_time,
            #{item.updatedBy} as updated_by,
            #{item.updatedTime} as updated_time,
            #{item.isDeleted} as is_deleted
            FROM DUAL
        ) t2
        on DUPLICATE KEY UPDATE customer_id=t2.customer_id,account_holder_name=t2.account_holder_name,bank_country=t2.bank_country,bank_account_num=t2.bank_account_num,
        bank_name=t2.bank_name,bank_branch_code=t2.bank_branch_code,
        created_by=t2.created_by,created_time=t2.created_time,updated_by=t2.updated_by,updated_time=t2.updated_time,is_deleted = t2.is_deleted
    </update>

saveOrUpdateBath

    <update id="selfSaveOrUpdateBatch">
        INSERT INTO mdm_customer_bank_info (id,customer_id,account_holder_name,bank_country,bank_account_num,bank_name,
        bank_branch_code,created_by,created_time,updated_by,updated_time,is_deleted) SELECT * FROM (
        <foreach collection="list" item="item" index="index" separator="union">
            SELECT
            #{item.id} as id,
            #{item.customerId} as customer_id,
            #{item.accountHolderName} as account_holder_name,
            #{item.bankCountry} as bank_country,
            #{item.bankAccountNum} as bank_account_num,
            #{item.bankName} as bank_name,
            #{item.bankBranchCode} as bank_branch_code,
            #{item.createdBy} as created_by,
            #{item.createdTime} as created_time,
            #{item.updatedBy} as updated_by,
            #{item.updatedTime} as updated_time,
            #{item.isDeleted} as is_deleted
            FROM DUAL
        </foreach>
        ) t2
        on DUPLICATE KEY UPDATE customer_id=t2.customer_id,account_holder_name=t2.account_holder_name,bank_country=t2.bank_country,bank_account_num=t2.bank_account_num,
        bank_name=t2.bank_name,bank_branch_code=t2.bank_branch_code,
        created_by=t2.created_by,created_time=t2.created_time,updated_by=t2.updated_by,updated_time=t2.updated_time,is_deleted = t2.is_deleted
    </update>