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Thread: Hibernate saving object

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  1. May 2nd, 2011, 12:24 AM #1
    solomon_13000
    solomon_13000 is offline Junior Member
    Join Date
    Mar 2011
    Posts
    14

    Default Hibernate saving object

    Below is the code to save an object inside a MySql database:

    test. java
    -----------

    Code:
    import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.Table;

@Entity
@Table(name="test")
public class test implements Serializable{
	
	private static final long serialVersionUID = 1L;
	private String data;

	public String getData() {
		return data;
	}

	public void setData(String data) {
		this.data = data;
	}
}
    database.java
    ----------------

    Code:
    import java.sql.SQLException;
import java.util.List;

import org.hibernate.HibernateException;
import org.hibernate.SQLQuery;
import org.hibernate.Session;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.orm.hibernate3.HibernateCallback;
import org.springframework.orm.hibernate3.HibernateTemplate;

public class database {
	public static void main(String[] args){
	   ApplicationContext ctx = new ClassPathXmlApplicationContext("database.xml");
       HibernateTemplate hibernate = (HibernateTemplate)ctx.getBean("hibernateTemplate");
       
       System.out.println(hibernate.executeFind(new HibernateCallback() {
    	   @Override
    	   public Object doInHibernate(Session session) throws HibernateException, SQLException {
    		   test a = new test();
    		   a.setData("john");
    		   session.save(a);
    		   SQLQuery query = session.createSQLQuery("select * from test");
    		   return query.list();
    	   }
		}).size());
   }
}
    However, I am getting the following unpleasant message:

    Code:
    May 2, 2011 1:16:45 PM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@17ace8d: display name [org.springframework.context.support.ClassPathXmlApplicationContext@17ace8d]; startup date [Mon May 02 13:16:45 SGT 2011]; root of context hierarchy
May 2, 2011 1:16:45 PM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [database.xml]
May 2, 2011 1:16:46 PM org.springframework.context.support.AbstractApplicationContext obtainFreshBeanFactory
INFO: Bean factory for application context [org.springframework.context.support.ClassPathXmlApplicationContext@17ace8d]: org.springframework.beans.factory.support.DefaultListableBeanFactory@8f4fb3
May 2, 2011 1:16:46 PM org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@8f4fb3: defining beans [hibernateTemplate,bkl.hib.SessionFactory,bkl.hib.DataSource,bkl.hib.HibernateConfig]; root of factory hierarchy
May 2, 2011 1:16:47 PM org.hibernate.cfg.annotations.Version <clinit>
INFO: Hibernate Annotations 3.2.0.GA
May 2, 2011 1:16:47 PM org.hibernate.cfg.Environment <clinit>
INFO: Hibernate 3.2.1
May 2, 2011 1:16:47 PM org.hibernate.cfg.Environment <clinit>
INFO: hibernate.properties not found
May 2, 2011 1:16:47 PM org.hibernate.cfg.Environment buildBytecodeProvider
INFO: Bytecode provider name : cglib
May 2, 2011 1:16:47 PM org.hibernate.cfg.Environment <clinit>
INFO: using JDK 1.4 java.sql.Timestamp handling
May 2, 2011 1:16:47 PM org.springframework.orm.hibernate3.LocalSessionFactoryBean buildSessionFactory
INFO: Building new Hibernate SessionFactory
May 2, 2011 1:16:47 PM org.hibernate.connection.ConnectionProviderFactory newConnectionProvider
INFO: Initializing connection provider: org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider
May 2, 2011 1:16:50 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: RDBMS: MySQL, version: 5.5.9
May 2, 2011 1:16:50 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: JDBC driver: MySQL-AB JDBC Driver, version: mysql-connector-java-5.0.8 ( Revision: ${svn.Revision} )
May 2, 2011 1:16:50 PM org.hibernate.dialect.Dialect <init>
INFO: Using dialect: org.hibernate.dialect.SQLServerDialect
May 2, 2011 1:16:50 PM org.hibernate.transaction.TransactionFactoryFactory buildTransactionFactory
INFO: Using default transaction strategy (direct JDBC transactions)
May 2, 2011 1:16:50 PM org.hibernate.transaction.TransactionManagerLookupFactory getTransactionManagerLookup
INFO: No TransactionManagerLookup configured (in JTA environment, use of read-write or transactional second-level cache is not recommended)
May 2, 2011 1:16:50 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Automatic flush during beforeCompletion(): disabled
May 2, 2011 1:16:50 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Automatic session close at end of transaction: disabled
May 2, 2011 1:16:50 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Scrollable result sets: enabled
May 2, 2011 1:16:50 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: JDBC3 getGeneratedKeys(): enabled
May 2, 2011 1:16:50 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Connection release mode: on_close
May 2, 2011 1:16:50 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Default batch fetch size: 1
May 2, 2011 1:16:50 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Generate SQL with comments: enabled
May 2, 2011 1:16:50 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Order SQL updates by primary key: disabled
May 2, 2011 1:16:50 PM org.hibernate.cfg.SettingsFactory createQueryTranslatorFactory
INFO: Query translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory
May 2, 2011 1:16:50 PM org.hibernate.hql.ast.ASTQueryTranslatorFactory <init>
INFO: Using ASTQueryTranslatorFactory
May 2, 2011 1:16:50 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Query language substitutions: {}
May 2, 2011 1:16:50 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: JPA-QL strict compliance: disabled
May 2, 2011 1:16:50 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Second-level cache: enabled
May 2, 2011 1:16:50 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Query cache: disabled
May 2, 2011 1:16:50 PM org.hibernate.cfg.SettingsFactory createCacheProvider
INFO: Cache provider: org.hibernate.cache.NoCacheProvider
May 2, 2011 1:16:50 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Optimize cache for minimal puts: disabled
May 2, 2011 1:16:50 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Structured second-level cache entries: disabled
May 2, 2011 1:16:50 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Statistics: disabled
May 2, 2011 1:16:50 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Deleted entity synthetic identifier rollback: disabled
May 2, 2011 1:16:50 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Default entity-mode: pojo
May 2, 2011 1:16:50 PM org.hibernate.impl.SessionFactoryImpl <init>
INFO: building session factory
May 2, 2011 1:16:50 PM org.hibernate.impl.SessionFactoryObjectFactory addInstance
INFO: Not binding factory to JNDI, no JNDI name configured
May 2, 2011 1:16:50 PM org.hibernate.tool.hbm2ddl.SchemaUpdate execute
INFO: Running hbm2ddl schema update
May 2, 2011 1:16:50 PM org.hibernate.tool.hbm2ddl.SchemaUpdate execute
INFO: fetching database metadata
May 2, 2011 1:16:50 PM org.hibernate.tool.hbm2ddl.SchemaUpdate execute
INFO: updating schema
May 2, 2011 1:16:50 PM org.hibernate.tool.hbm2ddl.SchemaUpdate execute
INFO: schema update complete
Exception in thread "main" org.springframework.orm.hibernate3.HibernateSystemException: Unknown entity: test; nested exception is org.hibernate.MappingException: Unknown entity: test
Caused by: org.hibernate.MappingException: Unknown entity: test
	at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:548)
	at org.hibernate.impl.SessionImpl.getEntityPersister(SessionImpl.java:1338)
	at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:96)
	at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:186)
	at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)
	at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:175)
	at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)
	at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)
	at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:535)
	at org.hibernate.impl.SessionImpl.save(SessionImpl.java:523)
	at org.hibernate.impl.SessionImpl.save(SessionImpl.java:519)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.springframework.orm.hibernate3.HibernateTemplate$CloseSuppressingInvocationHandler.invoke(HibernateTemplate.java:1202)
	at $Proxy1.save(Unknown Source)
	at database$1.doInHibernate(database.java:22)
	at org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:372)
	at org.springframework.orm.hibernate3.HibernateTemplate.executeFind(HibernateTemplate.java:342)
	at database.main(database.java:17)
    Last edited by solomon_13000; May 2nd, 2011 at 06:43 PM.
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