I have a mapping class

import java.util.Date;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;

import org.hibernate.annotations.Type;

@Entity
@Table(name = "tags_temp")
public class TagsTemp {
@Id
@Column(name = "sno")
private int sno;
@Id
@Column(name = "tag_name")
private String tagName;
@Column(name = "tag_imp")
private int tagImp;

public TagsTemp() {}

public int getSno() {return sno;}

public void setSno(int sno) {this.sno = sno;}

public String getTagName() {return tagName;}

public void setTagName(String tagName) {this.tagName = tagName;}

public int getTagImp() {return tagImp;}

public void setTagImp(int tagImp) { this.tagImp = tagImp;}

}


primary key is (sno,tagname)


when i try to insert using :

TagsTemp crtt = new TagsTemp();
tt.setSno(sno);
tt.setTagImp(4);
tt.setTagName("hi");
session.save(tt);

it gives me error : field tagName doesn't have a default value
if i remove @Id from tagname..it works fine

Please tell me how to go about it ?

hi captain
it may help you

i think you are using composite primary key
for that u must use
Mapped Composite Primary Key Class or Embedded Composite Primary Key Class
i found something on following link
http://download.oracle.com/docs/cd/B321 ... cfg001.htm

I have now primary key class containing (sno,tagname)

and mapping class containing (primarykeyclass and tagimp)


how can i delete all rows with sno = 1 ?

it may be like that

..delete.. where TagsTemp.containing.sno=1