Hi I wanted to use Netbeans generation of hibernate POJOs and mapping xmls but it is evidently malfunctioning.
I have a DB with tables A and B with a many to many relation(which is the relation thats doesnt work with Netbeans generation).
Can you see any obvious errors in the generations?
Here's the hibernate.cfg
Code:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/mydb</property>
<property name="hibernate.connection.username">root</property>
<mapping resource="model/A.hbm.xml"/>
<mapping resource="model/B.hbm.xml"/>
</session-factory>
</hibernate-configuration>
and the 2 tables xmls
Code:
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated 2011-jan-26 20:54:06 by Hibernate Tools 3.2.1.GA -->
<hibernate-mapping>
<class name="model.A" table="a" catalog="mydb">
<id name="ida" type="int">
<column name="ida" />
<generator class="assigned" />
</id>
<set name="bs" inverse="false" table="a_has_b">
<key>
<column name="a_ida" not-null="true" />
</key>
<many-to-many entity-name="model.B">
<column name="b_idb" not-null="true" />
</many-to-many>
</set>
</class>
</hibernate-mapping>
Code:
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated 2011-jan-26 20:54:06 by Hibernate Tools 3.2.1.GA -->
<hibernate-mapping>
<class name="model.B" table="b" catalog="mydb">
<id name="idb" type="int">
<column name="idb" />
<generator class="assigned" />
</id>
<set name="as" inverse="false" table="a_has_b">
<key>
<column name="b_idb" not-null="true" />
</key>
<many-to-many entity-name="model.A">
<column name="a_ida" not-null="true" />
</many-to-many>
</set>
</class>
</hibernate-mapping>
So when I try Running a HQL(from A) on it it says:
Code:
org.hibernate.MappingException: An association from the table a_has_b refers to an unmapped class: model.B
at org.hibernate.cfg.Configuration.secondPassCompileForeignKeys(Configuration.java:1252)
at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1170)
at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:324)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1286)
at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:859)
Login
FAQ
Search