column can't be null

Tue Apr 20, 2010 2:30 pm

If you want to specify that a column can't take no value ( null ) ,you will need to add (nullable=false) attribute in the @Column annotation.

Code:: package com.codemiles.jpa; import java.util.Date; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.Id; import javax.persistence.OneToOne; import javax.persistence.PrimaryKeyJoinColumn; import javax.persistence.Table; @Entity @Table(name="BED") public class Bed implements java.io.Serializable{ /** * */ private static final long serialVersionUID = 1L; @Id private String Id; private String type; private Date production_date; private String width; private String height; @OneToOne @PrimaryKeyJoinColumn private Person person; public String getId() { return Id; } public void setId(String id) { Id = id; } @Column(name="TYPE" ,nullable=false) public String getType() { return type; } public void setType(String type) { this.type = type; } @Column(name="PRODUCTION") public Date getProduction_date() { return production_date; } public void setProduction_date(Date production_date) { this.production_date = production_date; } @Column(name="WIDTH") public String getWidth() { return width; } public void setWidth(String width) { this.width = width; } @Column(name="HEIGHT") public String getHeight() { return height; } public void setHeight(String height) { this.height = height; } public void setPerson(Person person) { this.person = person; } public Person getPerson() { return person; } }