How to insert data more than one time for a single entity ?

[sart]

Hello!

I found that i can't insert data more than one time with persist(). I know that every time we want to make persist() we need to create new entity instance. But with seam i use @In to  inject my entity, so what should i do to solve this problem ?

This is my entity bean..

package com.st.st;

import java.util.Date;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import static javax.persistence.GenerationType.IDENTITY;
import javax.persistence.Id;
import javax.persistence.Table;
import org.hibernate.validator.NotNull;
import org.jboss.seam.annotations.Name;


@Entity
@Table(name = "schedule", catalog = "seamtest")
@Name("schedule")
public class Schedule implements java.io.Serializable {

     private Integer scheduleId;
     private float value;
     private Date date;

     public Schedule() {
     }

     public Schedule(float value, Date date) {
          this.value = value;
          this.date = date;
     }

     @Id
     @GeneratedValue(strategy = IDENTITY)
     @Column(name = "schedule_id", unique = true, nullable = false)
     public Integer getScheduleId() {
          return this.scheduleId;
     }

     public void setScheduleId(Integer scheduleId) {
          this.scheduleId = scheduleId;
     }

     @Column(name = "value", nullable = false, precision = 12, scale = 0)
     @NotNull
     public float getValue() {
          return this.value;
     }

     public void setValue(float value) {
          this.value = value;
     }

     @Column(name = "date", nullable = false, length = 0)
     @NotNull
     public Date getDate() {
          return this.date;
     }

     public void setDate(Date date) {
          this.date = date;
     }

}

[sart]

hmm.. i create same topic twice /
i'm sorry, i thought it didn't save first time..

[laliluna.usenet.laliluna.de]

Your object will have an ID once it was saved. In that case, you can call merge instead.
You might read about merge and persist in the doc as well.

Regards

Sebastian

[sart]

Thank you for your reply but the problem is that i don't need to change saved data, but to insert, for example six different lines of data into database with one method.

[keithnaas]

You need to make sure that you instantiate a new Schedule object each time you want a new one saved.  Otherwise, the previously saved Schedule with its own ID will simply attempt to persist again.

[sart]

Keith Naas wrote on Feb 25, 2008 05:25 PM:


You need to make sure that you instantiate a new Schedule object each time you want a new one saved.  Otherwise, the previously saved Schedule with its own ID will simply attempt to persist again.

But how to instantiate a new Schedule object if

Schedule schedule = new Schedule()

is not working ?

[dustismo]

Obviously every named component can only have one instance in a given context, so using @In is probably not what you want to do..

What do you mean that

Schedule schedule = new Schedule()

doesn't work?  How are you calling persist?  What exception is thrown? 

-Dustin