[DERBY-7118] Derby with hibernate does not generate relationship mappings in *hbm.xml

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 10.14.2.0
• Fix Version/s: 10.14.2.0
• Component/s: Miscellaneous
• Labels: Hibernate debian derby netbeans-11
• Environment: Derby 10.14.2.0, in NetBeans IDE 11.3, Hibernate ORM 5.4.31, Debian 10.9.
• Urgency: Normal
• Flags: Important
• Assignee: Unassigned
• Reporter: swapnil
• Created: 04/Jun/21 13:46
• Updated: 04/Jun/21 19:16

Description

I'm generating POJO from Derby 10.14.2.0 database in NetBeans IDE 11.3, Hibernate ORM 5.4.31.

It does not generate any relationship-mappings in hbm.xml or in entity classes like many-to-one/one-to-one).

I've used two tables from Derby sample database.

Product and PurchaseOrder

Product table is referenced in PurchaseOrder.

Table PurchaseOrder has FOREIGN_KEY_PRODUCT_ID.

 

hibernate.cfg

<hibernate-configuration>
 <session-factory>
 <property name="hibernate.dialect">org.hibernate.dialect.DerbyTenSevenDialect</property>
 <property name="hibernate.connection.driver_class">org.apache.derby.jdbc.ClientDriver</property>
 <property name="hibernate.connection.url">jdbc:derby://localhost:1527/sample</property>
 <property name="hibernate.connection.username">app</property>
 <property name="hibernate.connection.password">app</property>
<mapping resource="com/pojo/Product.hbm.xml"/>
 <mapping resource="com/pojo/PurchaseOrder.hbm.xml"/>
 </session-factory>
 </hibernate-configuration>
 

I also tried defining hibernate properties

<property name="hibernate.default_catalog">app</property>

and

<property name="hibernate.default_schema">app</property>

But no, it won't help.

hibernate.reveng.xml  

<hibernate-reverse-engineering>
 <schema-selection match-schema="APP"/>
 <table-filter match-name="PRODUCT"/>
 <table-filter match-name="PURCHASE_ORDER"/>
 </hibernate-reverse-engineering>

PurchaseOrder.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="com.pojo.PurchaseOrder" table="PURCHASE_ORDER" schema="APP" optimistic-lock="version"> 
<id name="orderNum" type="int"> <column name="ORDER_NUM" /> 
<generator class="assigned" /> 
</id> <property name="customerId" type="int"> <column name="CUSTOMER_ID" not-null="true" /> 
</property> <property name="productId" type="int"> <column name="PRODUCT_ID" not-null="true" /> </property>
 <property name="quantity" type="java.lang.Short"> <column name="QUANTITY" /> </property> 
<property name="shippingCost" type="big_decimal"> <column name="SHIPPING_COST" precision="12" /> 
 

</property> <property name="salesDate" type="date"> <column name="SALES_DATE" length="10" /> </property>
 
<property name="shippingDate" type="date"> <column name="SHIPPING_DATE" length="10" /> </property> 
<property name="freightCompany" type="string"> <column name="FREIGHT_COMPANY" length="30" /> 
</property>
</class&amp;amp;gt; 
</hibernate-mapping>
 

In above PurchaseOrder.hbm.xml file, relationship mapping should be generated but you can see it is missing.

 

Expecting

Wizard should generate mapping relationship like many-to-one/one-to-one) in PurchaseOrder.hbm.xml

But why relationship mapping doesn't generating?

With MySQL it is working fine.

Doesn't Hibernate support Derby properly?
What is solution?

 

This issue already reported here https://bz.apache.org/netbeans/show_bug.cgi?id=223543 9 years ago.