Question

我正在尝试将我的订单对象保存在与pastaIndividual表有多对一关系的数据库中。

但是，我得到了这个例外：

错误：NHibernate.Exceptions.GenericADOException：无法插入： [FrancosPoS.DBMapping.order] [SQL：INSERT INTO订单（价格，现金， credit，obs）VALUES（？，？，？，？）; SELECT LAST_INSERT_ID（）] ---＆gt; MySql.Data.MySqlClient.MySqlException：您的SQL中有错误句法;查看与MySQL服务器版本对应的手册在'订单（价格，现金，信用，obs）附近使用正确的语法 VALUES（'123'，1,0，'Nhibernate'）;在第1行选择LAST_'

这是我的订单映射表：

<?xml version="1.0" encoding="utf-8"?>
<hibernate-mapping assembly="FrancosPoS" namespace="FrancosPoS.DBMapping" xmlns="urn:nhibernate-mapping-2.2">
  <class name="order" table="order" lazy="true" >
    <id name="idOrder">
      <generator class="identity" />
    </id>
    <set name="pastaIndividual" table="pasta_individual" cascade="save-update">
      <key column="idPastaI"/>
      <one-to-many class="pastaIndividual"/>
    </set>
    <!--<many-to-one insert="false" update="false" lazy="false" name="pastaIndividual" class="FrancosPoS.DBMapping.pastaIndividual">
      <column name="idPastaI" sql-type="int(11)" not-null="false" />
    </many-to-one>-->
    <many-to-one insert="false" update="false" lazy="false" name="pastaCombo" class="FrancosPoS.DBMapping.pastaCombo">
      <column name="idPastaC" sql-type="int(11)" not-null="false" />
    </many-to-one>
    <many-to-one insert="false" update="false" lazy="false" name="pastaFeast" class="FrancosPoS.DBMapping.pastaFeast">
      <column name="idPastaF" sql-type="int(11)" not-null="false" />
    </many-to-one>
    <many-to-one insert="false" update="false" lazy="false" name="salad" class="FrancosPoS.DBMapping.salad">
      <column name="idSalad" sql-type="int(11)" not-null="false" />
    </many-to-one>
    <many-to-one insert="false" update="false" lazy="false" name="drink" class="FrancosPoS.DBMapping.drink">
      <column name="idDrink" sql-type="int(11)" not-null="false" />
    </many-to-one>
    <property name="price">
      <column name="price" sql-type="decimal(8,4)" not-null="true" />
    </property>
    <property name="cash">
      <column name="cash" sql-type="tinyint(1)" not-null="false" />
    </property>
    <property name="credit">
      <column name="credit" sql-type="tinyint(1)" not-null="false" />
    </property>
    <property name="obs">
      <column name="obs" sql-type="varchar(150)" not-null="false" />
    </property>
  </class>
</hibernate-mapping>

这是我的pastaIndividual mapping：

<?xml version="1.0" encoding="utf-8"?>
<hibernate-mapping assembly="FrancosPoS" namespace="FrancosPoS.DBMapping" xmlns="urn:nhibernate-mapping-2.2">
  <class name="pastaIndividual" table="pasta_individual" lazy="true" >
    <id name="idPastaI">
      <generator class="identity" />
    </id>
    <property name="type">
      <column name="type" sql-type="varchar(25)" not-null="true" />
    </property>
    <property name="price">
      <column name="price" sql-type="decimal(8,4)" not-null="true" />
    </property>
  </class>
</hibernate-mapping>

我尝试使用订单映射来使用<set>或<many-to-one>，但发生了相同的错误。

也许我错过了一些反向属性？

感谢。

Answer 1

订单是保留字。只需在您的类定义中添加一些后退标记，NHibernate将自动为您转义表名。

 <class name="order" table="`order`" lazy="true" >

GenericADOException：无法插入

1 个答案: