@Entity
@Converter(name="geoConverter", convertClass=MyGeoConverter.class)
public class Coverage {

@Convert(geoConverter)
@Column(columnDefiniton = "Geometry")
private Rectangle location;
.
..
}

public class MyGeoConverter implements Converter {

   public Rectangle convertDataValueToObjectValue(Object dataValue, Session s) {
   .
   ..
   }

   public PGgeometry convertDataValueToObjectValue(Object objectValue, Session s) {
          ........
         PGgeometry geo = new PGgeometry(wkt);
        
          geo.getGeometry().setSrid(4326);

           return geo;
   }

   public void initialize(DatabaseMapping m, Session s) {
              m.getFİeld().setSqlType(Types.OTHER);
   }

   public boolean isMutable() {
     return false;
   }
}