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JavaRanch » Java Forums » Databases » Object Relational Mapping
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Author

Hibernate help

Farhan Chowdhury
Greenhorn

Joined: Nov 20, 2006
Posts: 6
I am trying to write some data to my database. I get the following error:

Dec 21, 2006 10:29:24 AM org.hibernate.cfg.Environment <clinit>
INFO: Hibernate 3.0.5
Dec 21, 2006 10:29:24 AM org.hibernate.cfg.Environment <clinit>
INFO: loaded properties from resource hibernate.properties: {hibernate.connection.username=root, hibernate.connection.password=****, hibernate.cglib.use_reflection_optimizer=true, hibernate.dialect=org.hibernate.dialect.MySQLDialect, hibernate.connection.url=jdbc:mysql://localhost/mecap, hibernate.connection.driver_class=org.gjt.mm.mysql.Driver}
Dec 21, 2006 10:29:24 AM org.hibernate.cfg.Environment <clinit>
INFO: using CGLIB reflection optimizer
Dec 21, 2006 10:29:24 AM org.hibernate.cfg.Environment <clinit>
INFO: using JDK 1.4 java.sql.Timestamp handling
Dec 21, 2006 10:29:24 AM org.hibernate.cfg.Configuration configure
INFO: configuring from resource: /hibernate.cfg.xml
Dec 21, 2006 10:29:24 AM org.hibernate.cfg.Configuration getConfigurationInputStream
INFO: Configuration resource: /hibernate.cfg.xml
An AnnotationConfiguration instance is required to use <mapping clazz="com.marketecho.mecap.Users"/>
Hello

Exception in thread "main" java.lang.NullPointerException
at com.marketecho.mecap.WritingRecord.main(WritingRecord.java:38)

My code is the following:

It gives me null pointer exception at line session.flush().

[ Edited to use code tags - Paul Sturrock ]
[ December 21, 2006: Message edited by: Paul Sturrock ]
Paul Sturrock
Bartender

Joined: Apr 14, 2004
Posts: 10336

So the Session is null. Did either of these lines work?


This line:

An AnnotationConfiguration instance is required to use <mapping clazz="com.marketecho.mecap.Users"/>

suggests they didn't.
[ December 21, 2006: Message edited by: Paul Sturrock ]

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Farhan Chowdhury
Greenhorn

Joined: Nov 20, 2006
Posts: 6
What can I do about it? any suggestion please.
Farhan Chowdhury
Greenhorn

Joined: Nov 20, 2006
Posts: 6
After SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
It catches exception prints out the following line
An AnnotationConfiguration instance is required to use <mapping clazz="com.marketecho.mecap.Users"/>
Then since session is null, it gets null pointer excepetion at
line session.flush();

Any suggestion what can I do?
 
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subject: Hibernate help
 
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