Hibernate在数据库表中为双向关联创建多个外键

Question

但是，我似乎搞错了一些事情，因为当Hibernate创建表时，会创建多个外键，如下所示：

信息:HHH10001501:从JdbcConnectionAccess[org.hibernate.engine.jdbc.env.internal.jdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess@5E5595F3]获得的用于（非JTA）DDL执行的连接未处于自动提交模式；将提交连接“本地事务”，并将连接设置为自动提交模式。

Hibernate：创建表app.items（默认情况下作为标识生成的ITEM_ID整数，名称varchar(100)，NET_PRICE整数，VAT_RATE整数，CATEGORY_ID整数不为空，主键(ITEM_ID))

Hibernate：创建表app.limit(LIMIT_ID整数不为null,LIMIT_VALUE整数,主键(LIMIT_ID))

Hibernate：创建表app.partner(PARTNER_ID整数默认生成为标识，PARTNER_NAME varchar(100)，主键(PARTNER_ID))

Hibernate：创建表app.transactions（默认情况下作为标识生成的TRANSACTIONS_ID整数、FLOW整数不为null、NET_PRICE整数、ITEM_ID整数不为null、advicenote整数、ADVICENOTE_ID整数不为null、主键(TRANSACTIONS_ID))

Hibernate：alter table APP.TRANSACTIONS添加约束UK_r7btjtpy72nugbhuia8y0xnk6 unique(ITEM_ID)

Hibernate：alter table app.adviceNote add constraint FK4n4r6ej5i983gk8fqj20jl899 foreign key（partner）references app.partner

Hibernate：alter table app.adviceNote add constraint FKr96drd4j6pds8vocvsstcd2a2外键(PARTNER_ID)引用app.partner

Hibernate：alter table app.items add constraint fkbbkng91eiqu522okqq0nq7pm外键(CATEGORY_ID)引用app.categories

Hibernate：alter table APP.TRANSACTIONS添加约束FK13kk35nfl3iff7f2cs8er8w0s外键（advicenote）引用APP.advicenote

Hibernate:alter table app.transactions add constraint FK8ilbnqyk8lemxj0yvbqm3p7tt外键(ITEM_ID)references app.items

Hibernate：alter table app.transactions add constraint FKqrbn7tojjjkjyusy98a300btp外键(ADVICENOTE_ID)引用app.adviceNote

Hibernate：从app.categories categories0_中选择categories0_.name作为col_0_0_

Hibernate：选择items0_.item_id作为ITEM_ID1_2_,items0_.name作为NAME2_2_,items0_.net_price作为net_pric32_,items0_.vat_rate作为VAT_RATE4_2_,items0_.category_id作为CATEGORY5_2_from app.items items0_

Hibernate：选择items0_.item_id作为ITEM_ID1_2_,items0_.name作为NAME2_2_,items0_.net_price作为net_pric32_,items0_.vat_rate作为VAT_RATE4_2_,items0_.category_id作为CATEGORY5_2_from app.items items0_

Hibernate：从app.categories categories0_中选择categories0_.name作为col_0_0_

Hibernate：选择items0_.item_id作为ITEM_ID1_2_,items0_.name作为NAME2_2_,items0_.net_price作为net_pric32_,items0_.vat_rate作为VAT_RATE4_2_,items0_.category_id作为CATEGORY5_2_from app.items items0_

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<!-- Generated Feb 9, 2019, 3:57:52 PM by Hibernate Tools 4.3.1 -->
<hibernate-mapping>
    <class name="classes.Advicenote" table="ADVICENOTE" schema="APP" optimistic-lock="version">
        <id name="advicenoteId" type="int" column="ADVICENOTE_ID">
            <generator class="native" />
        </id>
        <property name="advicedate" type="date" column="ADVICE_DATE" length="10" />
        <property name="inOrOut" type="java.lang.Short" column="IN_OR_OUT" />
        <many-to-one 
            name="partner" class="classes.Partner"/>  
        <set name="transactions" table="TRANSACTIONS" inverse="false" cascade="all" lazy="true" fetch="select">       
            <key column="ADVICENOTE_ID" not-null="true"/>
            <one-to-many class="classes.Transactions"/>
        </set>
    </class>
</hibernate-mapping>

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
    <class name="classes.Categories" table="CATEGORIES" schema="APP" optimistic-lock="version">
        <id name="categoryId" type="int">
            <column name="CATEGORY_ID" />
            <generator class="native" />
        </id>
        <property name="name" type="string">
            <column name="NAME" length="100" />
        </property>
     <set name="items" table="ITEMS" inverse="true" cascade="all" lazy="false" fetch="select">
        <key>
            <column name="CATEGORY_ID" not-null="true" />
        </key>
        <one-to-many class="classes.Items" />
    </set>
    </class>
</hibernate-mapping>

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
    <class name="classes.Items" table="ITEMS" schema="APP" optimistic-lock="version">
        <id name="itemId" type="int" column="ITEM_ID">
            <generator class="native" />
        </id>
        <property name="name" type="string" column="NAME" length="100"/>
        <property name="netPrice" type="java.lang.Integer" column="NET_PRICE"/>
        <property name="vatRate" type="java.lang.Integer" column="VAT_RATE"/>
        <many-to-one name="category" class="classes.Categories" fetch="select" column="CATEGORY_ID" not-null="true" lazy="false"/>
    </class>
</hibernate-mapping>

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
    <class name="classes.Limit" table="LIMIT" schema="APP" optimistic-lock="version">
        <id name="limitId" type="java.lang.Integer" column="LIMIT_ID">
            <generator class="assigned"/>
        </id>
        <property name="value" type="int" column="LIMIT_VALUE" length="1000"/>
    </class>
</hibernate-mapping>

partner.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
    <class name="classes.Partner" table="PARTNER" schema="APP">
        <id name="partnerId" type="int">
            <column name="PARTNER_ID"/>
            <generator class="native"/>
        </id>
        <property name="partnerName" type="string" column="PARTNER_NAME" length="100"/>
        <set name="advicenotes" table="ADVICENOTE" inverse="false" cascade="all" lazy="true" fetch="select">
            <key column="PARTNER_ID" not-null="true"/>
            <one-to-many class="classes.Advicenote" />
        </set>
            </class>
</hibernate-mapping>

transactions.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
    <class name="classes.Transactions" table="TRANSACTIONS" schema="APP" optimistic-lock="version">
        <id name="transactionsId" type="int" column="TRANSACTIONS_ID">
            <generator class="native" />
        </id>
        <property name="flow" type="int" column="FLOW" not-null="true" />
        <property name="netPrice" type="java.lang.Integer" column="NET_PRICE" />

        <many-to-one name="advicenote" class="classes.Advicenote"/>
        <many-to-one name="item" class="classes.Items" fetch="select" cascade="save-update" column="ITEM_ID" unique="true" not-null="true"/>
    </class>
</hibernate-mapping>

Answer 1

缺少AdviceNote映射JoinColumn

<many-to-one name="partner" class="classes.Partner">
   <join-column name="PARTNER_ID"/>
</many-to-one>