I am just starting to experiment with Hibernate. I set up a project in eclipse, with no folder hierarchy as to simplify by keeping all the files in the same folder.
The files that Eclipse auto-generated were a bit weird, and didnt work, so I have modified them. I have mysql installed, with a Schema named Test, that contains the table "DOG with attributes IDNR and NAME.
Here are my files:
Dog.java:
import java.io.Serializable;
public class Dog implements Serializable{
private Long id;
private String name;
public Dog(String name){
this.name=name;
}
public Long getId(){
return id;
}
public String getName(){
return name;
}
public void setId(Long id){
this.id=id;
}
public void setName(String name){
this.name=name;
}
}
HiberTest.java:
import org.hibernate.SessionFactory;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
//import javax.persistence.Entity;
//import org.hibernate.*;
//import org.hibernate.annotations.Entity;
public class HiberTest {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
Session session = sessionFactory.openSession();
Dog d1 = new Dog("Fido");
System.out.println(d1.getName());
Transaction tx = session.beginTransaction();
session.saveOrUpdate(d1);
tx.commit();
session.close();
/*// First unit of work
Session session = HibernateUtil.getSessionFactory().openSession();
Transaction tx = session.beginTransaction();
session.save(d1);
tx.commit();
session.close();*/
}
}
Dog.hmb.xml:
<?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 Mar 31, 2010 5:46:30 PM by Hibernate Tools 3.3.0.GA -->
<hibernate-mapping>
<class name="Dog" table="DOG">
<id column="IDNR" name="id" type="java.lang.Long">
<generator class="sequence" />
</id>
<property column="NAME" length="30" name="name" type="java.lang.String"/>
</property>
</class>
</hibernate-mapping>
hibernate.cfg.xml:
<?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="show_sql">true</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.password">rockaren</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost/Test</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
</session-factory>
</hibernate-configuration>
When I run the HiberTest file, I get:
83 [main] INFO org.hibernate.cfg.Environment - Hibernate 3.5.0-CR-2
86 [main] INFO org.hibernate.cfg.Environment - hibernate.properties not found
94 [main] INFO org.hibernate.cfg.Environment - Bytecode provider name : javassist
117 [main] INFO org.hibernate.cfg.Environment - using JDK 1.4 java.sql.Timestamp handling
332 [main] INFO org.hibernate.cfg.Configuration - configuring from resource: /hibernate.cfg.xml
332 [main] INFO org.hibernate.cfg.Configuration - Configuration resource: /hibernate.cfg.xml
460 [main] INFO org.hibernate.cfg.Configuration - Configured SessionFactory: null
468 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - Using Hibernate built-in connection pool (not for production use!)
469 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - Hibernate connection pool size: 20
469 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - autocommit mode: false
479 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - using driver: com.mysql.jdbc.Driver at URL: jdbc:mysql://localhost/Test
479 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - connection properties: {user=root, password=****}
902 [main] INFO org.hibernate.cfg.SettingsFactory - RDBMS: MySQL, version: 5.1.37-1ubuntu5.1
902 [main] INFO org.hibernate.cfg.SettingsFactory - JDBC driver: MySQL-AB JDBC Driver, version: mysql-connector-java-5.1.12 ( Revision: ${bzr.revision-id} )
942 [main] INFO org.hibernate.dialect.Dialect - Using dialect: org.hibernate.dialect.MySQLDialect
1011 [main] INFO org.hibernate.engine.jdbc.JdbcSupportLoader - Disabling contextual LOB creation as JDBC driver reported JDBC version [3] less than 4
1014 [main] INFO org.hibernate.transaction.TransactionFactoryFactory - Using default transaction strategy (direct JDBC transactions)
1017 [main] INFO org.hibernate.transaction.TransactionManagerLookupFactory - No TransactionManagerLookup configured (in JTA environment, use of read-write or transactional second-level cache is not recommended)
1017 [main] INFO org.hibernate.cfg.SettingsFactory - Automatic flush during beforeCompletion(): disabled
1017 [main] INFO org.hibernate.cfg.SettingsFactory - Automatic session close at end of transaction: disabled
1018 [main] INFO org.hibernate.cfg.SettingsFactory - JDBC batch size: 15
1018 [main] INFO org.hibernate.cfg.SettingsFactory - JDBC batch updates for versioned data: disabled
1029 [main] INFO org.hibernate.cfg.SettingsFactory - Scrollable result sets: enabled
1029 [main] INFO org.hibernate.cfg.SettingsFactory - JDBC3 getGeneratedKeys(): enabled
1029 [main] INFO org.hibernate.cfg.SettingsFactory - Connection release mode: auto
1031 [main] INFO org.hibernate.cfg.SettingsFactory - Maximum outer join fetch depth: 2
1031 [main] INFO org.hibernate.cfg.SettingsFactory - Default batch fetch size: 1
1031 [main] INFO org.hibernate.cfg.SettingsFactory - Generate SQL with comments: disabled
1031 [main] INFO org.hibernate.cfg.SettingsFactory - Order SQL updates by primary key: disabled
1031 [main] INFO org.hibernate.cfg.SettingsFactory - Order SQL inserts for batching: disabled
1031 [main] INFO org.hibernate.cfg.SettingsFactory - Query translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory
1034 [main] INFO org.hibernate.hql.ast.ASTQueryTranslatorFactory - Using ASTQueryTranslatorFactory
1034 [main] INFO org.hibernate.cfg.SettingsFactory - Query language substitutions: {}
1034 [main] INFO org.hibernate.cfg.SettingsFactory - JPA-QL strict compliance: disabled
1034 [main] INFO org.hibernate.cfg.SettingsFactory - Second-level cache: enabled
1034 [main] INFO org.hibernate.cfg.SettingsFactory - Query cache: disabled
1034 [main] INFO org.hibernate.cfg.SettingsFactory - Cache region factory : org.hibernate.cache.impl.NoCachingRegionFactory
1034 [main] INFO org.hibernate.cfg.SettingsFactory - Optimize cache for minimal puts: disabled
1034 [main] INFO org.hibernate.cfg.SettingsFactory - Structured second-level cache entries: disabled
1040 [main] INFO org.hibernate.cfg.SettingsFactory - Echoing all SQL to stdout
1041 [main] INFO org.hibernate.cfg.SettingsFactory - Statistics: disabled
1041 [main] INFO org.hibernate.cfg.SettingsFactory - Deleted entity synthetic identifier rollback: disabled
1041 [main] INFO org.hibernate.cfg.SettingsFactory - Default entity-mode: pojo
1042 [main] INFO org.hibernate.cfg.SettingsFactory - Named query checking : enabled
1042 [main] INFO org.hibernate.cfg.SettingsFactory - Check Nullability in Core (should be disabled when Bean Validation is on): enabled
1135 [main] INFO org.hibernate.impl.SessionFactoryImpl - building session factory
1142 [main] INFO org.hibernate.impl.SessionFactoryObjectFactory - Not binding factory to JNDI, no JNDI name configured
FidoException in thread "main"
org.hibernate.MappingException: Unknown entity: Dog
at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:678)
at org.hibernate.impl.SessionImpl.getEntityPersister(SessionImpl.java:1475)
at org.hibernate.engine.ForeignKeys.isTransient(ForeignKeys.java:203)
at org.hibernate.event.def.AbstractSaveEventListener.getEntityState(AbstractSaveEventListener.java:532)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:103)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93)
at org.hibernate.impl.SessionImpl.fireSaveOrUpdate(SessionImpl.java:677)
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:669)
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:665)
at HiberTest.main(HiberTest.java:28)
What is wrong? Ive sat for three days trying to figure this out! I really do apologize, truly, I understand I must be making some newbie mistake that really shouldnt be hard to find out or google, but I have done so and still not found out what Im doing wrong. I guess I am stupid.
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