How to map table at run time?

Question

I have a table:

CREATE TABLE airports (
  id SERIAL PRIMARY KEY,
  name VARCHAR2 NOT NULL,
);

have this class for mapping:

@Entity(name = "AirportEntity") 
@Table(name = "airports", schema = "public", catalog = "postgres") 
public class AirportsEntity {
    @Id
    @Column(name = "id")
    @GeneratedValue(strategy = GenerationType.AUTO)
    private int id;

    @Basic
    @Column(name = "name")
    private String name;

    /* getter and setter */ 
}

How can I set catalog = "postgres" on run time? I want catalog = parameter, where parameter set on run time.

PS. I deleted schema = "public", catalog = "postgres" on table annotation and in hibernate.cfg.xml set <property name="hibernate.connection.url"></property> at run time, (configuration.getProperties().setProperty("hibernate.connection.url", "jdbc:postgresql://" + ip + ":" + port + "/"+ catalog);) and all work:)