Hibernate mapping for Event bean using annotation method

Discontinued products Scheduler for Java (JavaPlanner)
#1

Hi,
In our application scenario we extended DHXEvent object(class) as per sample given on JavaPlanner website.
We want to do hibernate mapping of our custom event class like following way.

@Entity
@Table(name = "Events")
@AttributeOverrides({
	 @AttributeOverride(name="id", column = @Column(name="event_id")),
	 @AttributeOverride(name="start_date", column = @Column(name="start_date")),
	 @AttributeOverride(name="end_date", column = @Column(name="end_date")),
	 @AttributeOverride(name="text", column = @Column(name="text"))
})
public class Event extends DHXEvent implements Serializable   {

}

I’m new to hibernate and Spring MVC, Please help us to figure out things.
Thanks

#2

Means
I have to perform hibernate mapping only by using annotation method in subclass according to following scenario in Spirng MVC3 enviroment:

  1. I have class called Event.java from xxxx.jar library with following properties

public Class DHXEvent{ public integer id; public String start_date; public String start_date; public String text; }

  1. POJO class CustomEvent.java extending Event.java class using inheritance with following structure.

[code]public class CustomEvent extends DHXEvent implements Serializable {

private static final long serialVersionUID = 1L;

public String user;
public String type;
public String contact;
public String status;

}[/code]

  1. As per sample code Im able to perform hibernate mapping using XML in following way

<hibernate-mapping> <class name="<package>.model.CustomEvent" table="events"> <id column="event_id" name="id" type="java.lang.Integer"> <generator class="increment"/> </id> <property column="start_date" name="start_date" type="timestamp"/> <property column="end_date" name="end_date" type="timestamp"/> <property column="text" name="text" type="java.lang.String"/> <property column="user" name="user" type="java.lang.String"/> <property column="type" name="type" type="java.lang.String"/> <property column="contact" name="contact" type="java.lang.String"/> <property column="status" name="status" type="java.lang.String"/> </class> </hibernate-mapping>
and its working fine.

Q) How I can achieve the same thing with JPA/Hibernate annotations?

I am new bay for Hibernate / Spring framework.

Note: DHXEvent class is present in .jar library, not able to see the code exactly

#3

Hello,
sorry for the delay in answerring.
You should override all required fields. Here is an example:

@Entity
@Table(name = "events_units")
public class EventTest extends DHXEvent {

        // overriding default fields

	@Id @Column(name = "event_id")
	public Integer id;
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	
	@Column(name = "text")
	public String text;
	public String getText() {
		return text;
	}
	public void setText(String text) {
		this.text = text;
	}
	
	@Column(name = "start_date", columnDefinition = "timestamp")
	public Date start_date;
	public Date getStart_date() {
		return start_date;
	}
	public void setStart_date(Date start_date) {
		this.start_date = start_date;
	}
	
	@Column(name = "end_date", columnDefinition = "timestamp")
	public Date end_date;
	public Date getEnd_date() {
		return end_date;
	}
	public void setEnd_date(Date end_date) {
		this.end_date = end_date;
	}

        // your fields are here
	@Column(name = "user")
	public String user;

	public String getUser() {
		return user;
	}
	public void setUser(String user) {
		this.user = user;
	}

       // another fields
}
#4

hey really Thanks :slight_smile: