Hi,
I'm pretty new to hibernate and just playing around and making some tests. So far - slim but pretty mighty. Congratulation really a good tool.
I have never moved on so fast in testing a new tool and getting quick results.
My Environment: Eclipse, Hypersonic, Ant+XDoclet and of course hibernate 2.1.
The situation:
Superclass Human, Male and Female are extended. Mail and Female have a one to one relationship.
Maybe I'havent understood all, but what is wrong:
Create table human (
name Varchar(128),
type Varchar(128),
partner Varchar(128),
Primary Key (name)
);
/*
* Created on 04.03.2004
*
*/
package test4;
/**
* @hibernate.class
* table="test4"
*
* @hibernate.discriminator
* column="type"
* type="string"
*
* @author kalexm
*
*/
public class Human {
private String name;
/**
* @hibernate.id
* column="name"
* generator-class="assigned"
*/
public String getName() {
return name;
}
/**
* @param name The name to set.
*/
public void setName(String name) {
this.name = name;
}
}
/*
* Created on 04.03.2004
*
*/
package test4;
/**
* @hibernate.subclass
* discriminator-value="Male"
*
* @author kalexm
*
* see female for docu (are more eloquent)
*/
public class Male extends Human{
private Female wife;
/**
*
* @hibernate.column
* name="partner"
*
* @hibernate.one-to-one
* class="test4.Female"
* constrained="true"
* cascade="none"
*/
public Female getWife() {
return wife;
}
/**
* @param wife The wife to set.
*/
public void setWife(Female wife) {
this.wife = wife;
wife.setHusband(this);
}
}
/*
* Created on 04.03.2004
*
*/
package test4;
/**
* @hibernate.subclass
* discriminator-value="Female"
*
* @author kalexm
*
* inherited class, mapped like human to the human table, but
* is distincted by the discriminator column (type) and has an additional attribute
* husband. The husband is a self referenced foreign key on the same table, human.
*/
public class Female extends Human {
private Male husband;
/**
*
* @hibernate.column
* name="partner"
*
* @hibernate.one-to-one
* class="test4.Male"
* constrained="true"
* cascade="none"
*
* cascading would mean removing the couple?
*/
public Male getHusband() {
return husband;
}
/**
* @param husband The husband to set.
*/
public void setHusband(Male husband) {
this.husband = husband;
husband.setWife(this);
}
}
/*
* Created on 04.03.2004
*
*/
package test4;
import net.sf.hibernate.Session;
import net.sf.hibernate.SessionFactory;
import net.sf.hibernate.cfg.Configuration;
/**
* @author kalexm
*
* One-One Relationship with inheritance
*/
public class MarriageMaker {
public static void main(String[] args) {
System.out.println("starting my Test4");
addEntry();
}
private static void addEntry() {
SessionFactory sessionFactory = null;
System.out.println("testing add");
try {
sessionFactory = new Configuration()
.configure()
.buildSessionFactory();
} catch (Exception e) {
e.printStackTrace();
}
try {
Session session = sessionFactory.openSession();
Male ken = new Male();
ken.setName("Ken");
Female barbie = new Female();
barbie.setName("Barbie");
//sets automaticallly the husband..
ken.setWife(barbie);
session.save(ken);
session.save(barbie);
System.out.println("a new entry was written to the database");
session.flush();
session.close();
} catch (Exception e1) {
e1.printStackTrace();
}
}
}
#######################################
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 1.1//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-1.1.dtd">
<hibernate-mapping>
<class
name="test4.Human"
table="test4"
>
<id
name="name"
column="name"
type="java.lang.String"
>
<generator class="assigned">
</generator>
</id>
<discriminator
column="type"
type="string"
/>
<!--
To add non XDoclet property mappings, create a file named
hibernate-properties-Human.xml
containing the additional properties and place it in your merge dir.
-->
<subclass
name="test4.Male"
discriminator-value="Male"
>
<one-to-one
name="wife"
class="test4.Female"
cascade="none"
outer-join="auto"
constrained="true"
/>
<!--
To add non XDoclet property mappings, create a file named
hibernate-properties-Male.xml
containing the additional properties and place it in your merge dir.
-->
</subclass>
<subclass
name="test4.Female"
discriminator-value="Female"
>
<one-to-one
name="husband"
class="test4.Male"
cascade="none"
outer-join="auto"
constrained="true"
/>
<!--
To add non XDoclet property mappings, create a file named
hibernate-properties-Female.xml
containing the additional properties and place it in your merge dir.
-->
</subclass>
</class>
</hibernate-mapping>
#######################################
<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration
PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">org.hsqldb.jdbcDriver</property>
<property name="hibernate.dialect">net.sf.hibernate.dialect.HSQLDialect</property>
<property name="hibernate.connection.url">jdbc:hsqldb:hsql://127.0.0.1</property>
<property name="hibernate.connection.username">SA</property>
<property name="hibernate.connection.password"></property>
<property name="hibernate.show_sql">false</property>
<property name="hibernate.connection.pool_size">1</property>
<mapping resource="test1/ManyDatatypes.hbm.xml"/>
<mapping resource="test2/Person.hbm.xml"/>
<mapping resource="test3/Address.hbm.xml"/>
<mapping resource="test4/Human.hbm.xml"/>
</session-factory>
</hibernate-configuration>
#######################################
The result from ant:
Buildfile: C:\Programme\eclipse_3.0M6_SWT_DESIGNER\workspace\Hibernate Tests\build.xml
start_tests:
[java] starting my Test1
[java] testing add
[java] (cfg.Environment 462 ) Hibernate 2.1.2
[java] (cfg.Environment 491 ) hibernate.properties not found
[java] (cfg.Environment 519 ) using CGLIB reflection optimizer
[java] (cfg.Configuration 854 ) configuring from resource: /hibernate.cfg.xml
[java] (cfg.Configuration 826 ) Configuration resource: /hibernate.cfg.xml
[java] (cfg.Configuration 311 ) Mapping resource: test1/ManyDatatypes.hbm.xml
[java] (cfg.Binder 229 ) Mapping class: test1.ManyDatatypes -> test1
[java] (cfg.Configuration 311 ) Mapping resource: test2/Person.hbm.xml
[java] (cfg.Binder 229 ) Mapping class: test2.Person -> test2
[java] (cfg.Configuration 311 ) Mapping resource: test3/Address.hbm.xml
[java] (cfg.Binder 229 ) Mapping class: test3.Address -> test3
[java] (cfg.Configuration 311 ) Mapping resource: test4/Human.hbm.xml
[java] (cfg.Binder 229 ) Mapping class: test4.Human -> test4
[java] (cfg.Binder 169 ) Mapping subclass: test4.Male -> test4
[java] (cfg.Binder 169 ) Mapping subclass: test4.Female -> test4
[java] (cfg.Configuration 1017) Configured SessionFactory: null
[java] (cfg.Configuration 595 ) processing one-to-many association mappings
[java] (cfg.Configuration 604 ) processing one-to-one association property references
[java] (cfg.Configuration 629 ) processing foreign key constraints
[java] (cfg.SettingsFactory 62 ) Use outer join fetching: false
[java] (connection.DriverManagerConnectionProvider 41 ) Using Hibernate built-in connection pool (not for production use!)
[java] (connection.DriverManagerConnectionProvider 42 ) Hibernate connection pool size: 1
[java] (connection.DriverManagerConnectionProvider 71 ) using driver: org.hsqldb.jdbcDriver at URL: jdbc:hsqldb:hsql://127.0.0.1
[java] (connection.DriverManagerConnectionProvider 72 ) connection properties: {user=SA, password=}
[java] (transaction.TransactionManagerLookupFactory 33 ) No TransactionManagerLookup configured (in JTA environment, use of process level read-write cache is not recommended)
[java] (cfg.SettingsFactory 102 ) Use scrollable result sets: true
[java] (cfg.SettingsFactory 105 ) Use JDBC3 getGeneratedKeys(): false
[java] (cfg.SettingsFactory 108 ) Optimize cache for minimal puts: false
[java] (cfg.SettingsFactory 117 ) Query language substitutions: {}
[java] (cfg.SettingsFactory 128 ) cache provider: net.sf.ehcache.hibernate.Provider
[java] (cfg.Configuration 1080) instantiating and configuring caches
[java] (impl.SessionFactoryImpl 119 ) building session factory
[java] (util.ReflectHelper 160 ) reflection optimizer disabled for: test4.Male, BulkBeanException: null (property setWife)
[java] (util.ReflectHelper 160 ) reflection optimizer disabled for: test4.Female, BulkBeanException: null (property setHusband)
[java] (impl.SessionFactoryObjectFactory 82 ) no JNDI name configured
[java] java.lang.StackOverflowError
BUILD SUCCESSFUL
Total time: 13 seconds
I think the answer is something like 'read the manual' but a hint would be enough.
Thanks in advance
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