Question

 private String message = "";
 public String getMessage() {
  return message;
 }

 public void setMessage(String message) {
  this.message = message;
 }

I am using EJB3 and MySQL 5.1 using Java.
I want to insert paragraphs of texts into MySQL Database using Entity Bean.
But, When I add, MySQL can accept only 255 characters. It shows me the following error:

Caused by: com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data too long for column ‘message’ at row 1

Currently, field type of message is varchar(255) by default. Is there anyway to change the field type to “Text” in Entity Bean or increase the limit 255 to 1000?

Answer 1

You can annotate the property with javax.persistence.Lob:

private String message = "";

@Lob
public String getMessage() {
  return message;
}

public void setMessage(String message) {
  this.message = message;
}

You would have to update your schema too (ALTER TABLE…). Hibernate does this automatically for you if you set hibernate.hbm2ddl.auto=update.