package dalclient;

import java.util.*;


/**
 * Cone search connection.  At this point the protocol is stateless and a
 * "connection" is nothing more than a list of service URLs.  Queries require 
 * a connection context be established first.
 */
public
class ConeConnection extends DALConnection {

    /* Default is an empty service list.  */
    ConeConnection() {
	// Nothing yet.
    }

    /* Create a new connection with one service. */
    ConeConnection(String service) {
	super(service);
    }

    /* Get a new empty query context for this connection. */
    public ConeQuery getConeQuery() {
	ConeQuery query = new ConeQuery(this);
	return (query);
    }

    /* Set up a cone search query context with RA, DEC, SR. */
    public ConeQuery getConeQuery(double ra, double dec, double sr) {
	ConeQuery query = new ConeQuery(this);
	Double dval;

	dval = new Double(ra);
	query.addParameter("RA", dval.toString());
	dval = new Double(dec);
	query.addParameter("DEC", dval.toString());
	dval = new Double(sr);
	query.addParameter("SR", dval.toString());

	return (query);
    }
}