[jboss-user] [JBoss Seam] - Q) Usage of @Generated(GenerationTime.ALWAYS)

[ken@tydfam.jp]

Hi!
  I seam-gen to build platform to start my application development.   I generated codes using seam generate-entities from DB which has ID generated by DB itself.   So, I tried to add @Generated(GenerationTime.ALWAYS) to ID, but it caused the error as shown below.
  Am I misunderstanding something?   Is there a way to enable generated code respecting DB generated IDs?

Table scheme
 Column  |  Type   |                     Modifiers                      
  | ---------+---------+----------------------------------------------------
  |  id      | integer | not null default nextval('users_id_seq'::regclass)
  |  name    | text    | not null
  |  address | text    | not null
  |  email   | text    | 
  |  tel     | text    | 
  | Indexes:
  |     "users_pkey" PRIMARY KEY, btree (id)
  | 
  | 
  |   | package jp.tydfam.test1;
  |   | // Generated 2007/07/01 13:46:57 by Hibernate Tools 3.2.0.b9
  |   | 
  |   | import javax.persistence.Column;
  |   | import javax.persistence.Entity;
  |   | import javax.persistence.Id;
  |   | import javax.persistence.Table;
  |   | 
  |   | import org.hibernate.annotations.Generated;
  |   | import org.hibernate.annotations.GenerationTime;
  |   | import org.hibernate.validator.NotNull;
  |   | 
  |   | /**
  |   |  * Users generated by hbm2java
  |   |  */
  |   | @Entity
  |   | @Table(name = "users", schema = "public")
  |   | public class Users implements java.io.Serializable {
  |   | 
  |   | 	private int id;
  |   | 	private String name;
  |   | 	private String address;
  |   | 	private String email;
  |   | 	private String tel;
  |   | 
  |   | 	public Users() {
  |   | 	}
  |   | 
  |   | 	public Users(int id, String name, String address) {
  |   | 		this.id = id;
  |   | 		this.name = name;
  |   | 		this.address = address;
  |   | 	}
  |   | 	public Users(int id, String name, String address, String email, String tel) {
  |   | 		this.id = id;
  |   | 		this.name = name;
  |   | 		this.address = address;
  |   | 		this.email = email;
  |   | 		this.tel = tel;
  |   | 	}
  |   | 
  |   | 	@Id
  |   | 	@Generated(GenerationTime.ALWAYS)
  |   | 	@Column(name = "id", unique = true, nullable = false, insertable=false, updatable=false)
  |   | 	@NotNull
  |   | 	public int getId() {
  |   | 		return this.id;
  |   | 	}
  |   | 
  |   | 	public void setId(int id) {
  |   | 		this.id = id;
  |   | 	}
  |   | 
  |   | 	@Column(name = "name", nullable = false)
  |   | 	@NotNull
  |   | 	public String getName() {
  |   | 		return this.name;
  |   | 	}
  |   | 
  |   | 	public void setName(String name) {
  |   | 		this.name = name;
  |   | 	}
  |   |         :                   :                  :
  |   | 
  |   | }
  |   | 
  | Error log in server.log (partial)
  | 
  |   |         :                                  :                               :
  |   | 2007-07-01 13:52:32,909 DEBUG [org.hibernate.cfg.AnnotationBinder] Processing annotations of jp.tydfam.test1.Users.id
  |   | 2007-07-01 13:52:32,909 DEBUG [org.hibernate.cfg.Ejb3Column] Binding column id unique true
  |   | 2007-07-01 13:52:32,909 DEBUG [org.hibernate.cfg.AnnotationBinder] id is an id
  |   | 2007-07-01 13:52:32,909 DEBUG [org.hibernate.cfg.annotations.SimpleValueBinder] building SimpleValue for id
  |   | 2007-07-01 13:52:32,909 DEBUG [org.hibernate.cfg.annotations.PropertyBinder] Building property id
  |   | 2007-07-01 13:52:32,910 DEBUG [org.jboss.ejb3.ServiceDelegateWrapper] Starting failed persistence.units:ear=test1.ear,unitName=test1
  |   | java.lang.NullPointerException
  |   |         at org.hibernate.cfg.annotations.PropertyBinder.make(PropertyBinder.java:145)
  |   |         at org.hibernate.cfg.AnnotationBinder.bindId(AnnotationBinder.java:1738)
  |   |         at org.hibernate.cfg.AnnotationBinder.processElementAnnotations(AnnotationBinder.java:1180)
  |   |         at org.hibernate.cfg.AnnotationBinder.bindClass(AnnotationBinder.java:710)
  |   |         at org.hibernate.cfg.AnnotationConfiguration.processArtifactsOfType(AnnotationConfiguration.java:452)
  |   |          :                                          :                                               :
  |   | 
  |   | 

View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4059425#4059425

Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4059425