hibernate: generating a new table from model obj.

pom.xml:

<plugin><groupid>org.codehaus.mojo</groupid> <artifactid>hibernate3-maven-plugin</artifactid> <version>2.0-SNAPSHOT</version> <configuration> <component> <name>hbm2ddl</name> <implementation>annotationconfiguration</implementation> </component> <componentproperties> <configurationfile>target/classes/hibernate.cfg.xml</configurationfile><outputfilename>schema.sql</outputfilename> <jdk5>true</jdk5> <drop>false</drop> <export>false</export> <create>true</create> <update>true</update></componentproperties></configuration> </plugin>

Create a Java model object containing the needed properties and Java 1.5 annotations:

@Entity @Table(name = "mail_history") public class MailHistory implements Serializable { @Column(updatable = false, name = "date_sent", nullable = false) private Date dateSent; @Column(name = "entity_id", nullable = false) private int entityId; @Column(name = "entity_name", nullable = false, length=20) private String entityName; @Id @GeneratedValue(strategy = GenerationType.AUTO) @Column(updatable = false, name = "id", nullable = false) private Long id; @Column(name = "mail_type", nullable = false) private int mailType; @ManyToOne @JoinColumn(name = "user_id", nullable = false) private User user; //generate getter and setter methods

Add the model object to applicationContext.xml and hibernate.cfg.xml configuration file Run maven:

mvn -e clean compile hibernate3:hbm2ddl -Dtarget=Zainab