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// Copyright (c) 1999-2004 Brian Wellington (bwelling@xbill.org)
package org.xbill.DNS;
import java.io.*;
/**
* Geographical Location - describes the physical location of a host.
*
* @author Brian Wellington
*/
public class GPOSRecord extends Record {
private static final long serialVersionUID = -6349714958085750705L;
private byte [] latitude, longitude, altitude;
GPOSRecord() {}
Record
getObject() {
return new GPOSRecord();
}
private void
validate(double longitude, double latitude) throws IllegalArgumentException
{
if (longitude < -90.0 || longitude > 90.0) {
throw new IllegalArgumentException("illegal longitude " +
longitude);
}
if (latitude < -180.0 || latitude > 180.0) {
throw new IllegalArgumentException("illegal latitude " +
latitude);
}
}
/**
* Creates an GPOS Record from the given data
* @param longitude The longitude component of the location.
* @param latitude The latitude component of the location.
* @param altitude The altitude component of the location (in meters above sea
* level).
*/
public
GPOSRecord(Name name, int dclass, long ttl, double longitude, double latitude,
double altitude)
{
super(name, Type.GPOS, dclass, ttl);
validate(longitude, latitude);
this.longitude = Double.toString(longitude).getBytes();
this.latitude = Double.toString(latitude).getBytes();
this.altitude = Double.toString(altitude).getBytes();
}
/**
* Creates an GPOS Record from the given data
* @param longitude The longitude component of the location.
* @param latitude The latitude component of the location.
* @param altitude The altitude component of the location (in meters above sea
* level).
*/
public
GPOSRecord(Name name, int dclass, long ttl, String longitude, String latitude,
String altitude)
{
super(name, Type.GPOS, dclass, ttl);
try {
this.longitude = byteArrayFromString(longitude);
this.latitude = byteArrayFromString(latitude);
validate(getLongitude(), getLatitude());
this.altitude = byteArrayFromString(altitude);
}
catch (TextParseException e) {
throw new IllegalArgumentException(e.getMessage());
}
}
void
rrFromWire(DNSInput in) throws IOException {
longitude = in.readCountedString();
latitude = in.readCountedString();
altitude = in.readCountedString();
try {
validate(getLongitude(), getLatitude());
}
catch(IllegalArgumentException e) {
throw new WireParseException(e.getMessage());
}
}
void
rdataFromString(Tokenizer st, Name origin) throws IOException {
try {
longitude = byteArrayFromString(st.getString());
latitude = byteArrayFromString(st.getString());
altitude = byteArrayFromString(st.getString());
}
catch (TextParseException e) {
throw st.exception(e.getMessage());
}
try {
validate(getLongitude(), getLatitude());
}
catch(IllegalArgumentException e) {
throw new WireParseException(e.getMessage());
}
}
/** Convert to a String */
String
rrToString() {
StringBuffer sb = new StringBuffer();
sb.append(byteArrayToString(longitude, true));
sb.append(" ");
sb.append(byteArrayToString(latitude, true));
sb.append(" ");
sb.append(byteArrayToString(altitude, true));
return sb.toString();
}
/** Returns the longitude as a string */
public String
getLongitudeString() {
return byteArrayToString(longitude, false);
}
/**
* Returns the longitude as a double
* @throws NumberFormatException The string does not contain a valid numeric
* value.
*/
public double
getLongitude() {
return Double.parseDouble(getLongitudeString());
}
/** Returns the latitude as a string */
public String
getLatitudeString() {
return byteArrayToString(latitude, false);
}
/**
* Returns the latitude as a double
* @throws NumberFormatException The string does not contain a valid numeric
* value.
*/
public double
getLatitude() {
return Double.parseDouble(getLatitudeString());
}
/** Returns the altitude as a string */
public String
getAltitudeString() {
return byteArrayToString(altitude, false);
}
/**
* Returns the altitude as a double
* @throws NumberFormatException The string does not contain a valid numeric
* value.
*/
public double
getAltitude() {
return Double.parseDouble(getAltitudeString());
}
void
rrToWire(DNSOutput out, Compression c, boolean canonical) {
out.writeCountedString(longitude);
out.writeCountedString(latitude);
out.writeCountedString(altitude);
}
}
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