GenericADOException：無法插入

Question

我試圖將我的訂單對象保存在與表pastaIndividual具有多對一關係的數據庫中。

但是，我得到這個異常：

Error: NHibernate.Exceptions.GenericADOException: could not insert: [FrancosPoS.DBMapping.order][SQL: INSERT INTO order (price, cash, credit, obs) VALUES (?, ?, ?, ?);SELECT LAST_INSERT_ID()] ---> MySql.Data.MySqlClient.MySqlException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'order (price, cash, credit, obs) VALUES ('123', 1, 0, 'Nhibernate');SELECT LAST_' at line 1

這裏是我的命令映射表：

<?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> 

這裏是我的pastaIndividual映射：

<?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> 

我已經嘗試在訂單映射中使用<set>或只是<many-to-one>，但發生相同的錯誤。

也許我缺少一些反性質？

謝謝。

Answer 1

訂單是一個保留字。只需在你的類定義中添加一些back ticks，NHibernate會自動爲你自動轉義表名。

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