JPA: defining an index column

Possible Duplicate:
Specifying an index (non unique key) using JPA

Is there a way to define index on enitity column, to improve searches performance? I saw that hibernate gives @Index and @IndexColumn, but I am looking for JPA way to do it.

thanks

Here is an example of my entity, I need to index a name column

@Entity
@Table(name = "MY_TABLE")
public class MyEntity {
    private long id;
    private String name;
    private String sourceInfo;

  ...