import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.validation.constraints.Digits;
import javax.validation.constraints.NotNull;
import javax.persistence.Table;
import javax.validation.constraints.Digits;
import javax.validation.constraints.NotNull;
@Column(name = "message_id", length = 11, nullable = false, columnDefinition = "int(11) AUTO_INCREMENT")
@Digits(integer = 11, fraction = 0)
private Long messageId;
@Column(name = "message_id", length = 11, nullable = false, columnDefinition = "int(11) AUTO_INCREMENT")
@Digits(integer = 11, fraction = 0)
private Long messageId;