Unique two-column constraint Combination in active objects

I am developing Active Objects and have 4 columns in my table. I have a requirement where I need to set a constraint so that the combination of two columns is always unique.

@Table("TEST")
@Preload("*")
public interface TestEntity extends RawEntity<Long>{

@AutoIncrement
@NotNull
@PrimaryKey("ID")
Long getID();

@NotNull
Long getItemId();

@NotNull
String getItemName();

@StringLength(767)
String getDescription();

void setItemId(Long itemId);

void setItemName(String itemName);

void setDescription(String description);
}

      

        
        
        
      

    

The requirement here is that the combination of ItemId and ItemName must have a unique constraint.

I tried to do some searches but was able to find a way to make the single column unique using the net.java.ao.schema.Unique class.

Can anyone point me in the right direction on how this can be achieved.

thank