Java Hibernate在选择数据时生成的mystirious Delete语句

我有一个Oracle DB视图，使用union all关键字从两个相同的表组合而成

我使用hibernate的“每类表继承人”映射在其上创建了一个类树，如下所示：

<hibernate-mapping default-lazy="false">
<class name="com.ntg.shefaa.model.impl.Medical"
    discriminator-value="0" table="MEDICAL_INFORMATIONS" lazy="true">

    <id name="id" type="java.lang.Integer">
        <column name="id" />
        <generator class="identity" />
    </id>

    <discriminator column="TYPE" type="integer" not-null="false" />
<!-- and the rest of the attributes go here .... -->
<subclass name="com.ntg.shefaa.model.impl.Hospital"
        discriminator-value="1">
</subclass>
<!-- and the rest of the subclasses go here .... -->

问题是，当我尝试使用hibernate标准API选择select数据时，hibernate会在select语句之后生成一个“DELETE”语句：

Hibernate: select * from ( 
     select this_.id as id1_2_0_, this_.FACILITY_NAME as FACILITY3_2_0_, this_.FAMOUS_NAME as FAMOUS4_2_0_, this_.GOE_ID as GOE5_2_0_, this_.GOVERNORATE_NAME as GOVERNOR6_2_0_, this_.ADDRESS as ADDRESS7_2_0_, this_.PHONE1 as PHONE8_2_0_, this_.PHONE2 as PHONE9_2_0_, this_.PHONE3 as PHONE10_2_0_, this_.LONGITUDE as LONGITU11_2_0_, this_.LATITUDE as LATITUD12_2_0_, this_.DEGREE as DEGREE13_2_0_, this_.GENDER as GENDER14_2_0_, this_.SPECIALIZATION as SPECIAL15_2_0_, this_.QUALIFICATION as QUALIFI16_2_0_, this_.TYPE as TYPE2_2_0_, clinics2_.ID as ID1_2_2_, clinics2_.FACILITY_NAME as FACILITY3_2_2_, clinics2_.FAMOUS_NAME as FAMOUS4_2_2_, clinics2_.GOE_ID as GOE5_2_2_, clinics2_.GOVERNORATE_NAME as GOVERNOR6_2_2_, clinics2_.ADDRESS as ADDRESS7_2_2_, clinics2_.PHONE1 as PHONE8_2_2_, clinics2_.PHONE2 as PHONE9_2_2_, clinics2_.PHONE3 as PHONE10_2_2_, clinics2_.LONGITUDE as LONGITU11_2_2_, clinics2_.LATITUDE as LATITUD12_2_2_ 
     from MEDICAL_INFORMATIONS this_ 
     left outer join MEDICAL_INFORMATIONS clinics2_ 
     on this_.id=clinics2_.ID and ( clinics2_.type=2) 
) where rownum <= ?

Hibernate: delete from MEDICAL_INFORMATIONS where ID=? and FACILITY_NAME=? and FAMOUS_NAME=? and GOE_ID=? and GOVERNORATE_NAME=? and ADDRESS=? and PHONE1=? and PHONE2=? and PHONE3=? and LONGITUDE=? and LATITUDE=?

我的hibernate配置文件是：

<hibernate-configuration>
<session-factory>
    <!-- <property name="hibernate.hbm2ddl.auto">CREATE</property> -->
    <property name="javax.persistence.validation.mode">NONE</property>
    <property name="show_sql">true</property>
    <property name="format_sql">false</property>
    <property name="dialect">org.hibernate.dialect.Oracle10gDialect</property>
    <property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
    <property name="connection.url">jdbc:oracle:thin:@192.168.3.63:1521/testdb</property>
    <property name="connection.username">tl</property>
    <property name="connection.password">hggi</property>
    <mapping resource="config/Medical.hbm.xml" />
</session-factory>
</hibernate-configuration>

没有一个
真的
假的
org.hibernate.dialen.oracle10galent
oracle.jdbc.driver.OracleDriver
jdbc:oracle:thin:@192.168.3.63:1521/testdb
热释光
hggi

救命啊

---

提前感谢

这太可怕了，伙计！为什么你打开一个事务（并提交它）只是为了执行一个select语句？@Jorge Campos:我刚刚为所有类型的语句（select-create-update-delete）做了这个，不管怎样：对于select语句，你有什么建议？至少对于不需要事务的select语句来说，这是一个过分的做法。您只需打开一个会话，执行它并关闭它。根据错误的delete语句，我不知道。@Jorge Campos，尽管我看到的所有关于hibernate的示例/教程都为select语句打开事务并关闭它：>>>我听从了你的建议，突然！错误的删除语句消失了！！！非常感谢，先生

Session currentSession = sessionFactory.openSession();
currentSession.beginTransaction();
Criteria criteria = currentSession.createCriteria(type);
Object output = criteria.list();
session.getTransaction().commit();
session.flush();
session.close();

<hibernate-configuration>
<session-factory>
    <!-- <property name="hibernate.hbm2ddl.auto">CREATE</property> -->
    <property name="javax.persistence.validation.mode">NONE</property>
    <property name="show_sql">true</property>
    <property name="format_sql">false</property>
    <property name="dialect">org.hibernate.dialect.Oracle10gDialect</property>
    <property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
    <property name="connection.url">jdbc:oracle:thin:@192.168.3.63:1521/testdb</property>
    <property name="connection.username">tl</property>
    <property name="connection.password">hggi</property>
    <mapping resource="config/Medical.hbm.xml" />
</session-factory>
</hibernate-configuration>