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/*-------------------------------------------------------------------------
*
* Copyright (c) 2003-2005, PostgreSQL Global Development Group
*
* IDENTIFICATION
* $PostgreSQL: pgjdbc/org/postgresql/geometric/PGcircle.java,v 1.15 2005/01/11 08:25:45 jurka Exp $
*
*-------------------------------------------------------------------------
*/
package org.postgresql.geometric;
import org.postgresql.util.GT;
import org.postgresql.util.PGobject;
import org.postgresql.util.PGtokenizer;
import org.postgresql.util.PSQLException;
import org.postgresql.util.PSQLState;
import java.io.Serializable;
import java.sql.SQLException;
/**
* This represents org.postgresql's circle datatype, consisting of a point
* and a radius
*/
public class PGcircle extends PGobject implements Serializable, Cloneable
{
/**
* This is the center point
*/
public PGpoint center;
/**
* This is the radius
*/
public double radius;
/**
* @param x coordinate of center
* @param y coordinate of center
* @param r radius of circle
*/
public PGcircle(double x, double y, double r)
{
this(new PGpoint(x, y), r);
}
/**
* @param c PGpoint describing the circle's center
* @param r radius of circle
*/
public PGcircle(PGpoint c, double r)
{
this();
this.center = c;
this.radius = r;
}
/**
* @param s definition of the circle in PostgreSQL's syntax.
* @exception SQLException on conversion failure
*/
public PGcircle(String s) throws SQLException
{
this();
setValue(s);
}
/**
* This constructor is used by the driver.
*/
public PGcircle()
{
setType("circle");
}
/**
* @param s definition of the circle in PostgreSQL's syntax.
* @exception SQLException on conversion failure
*/
public void setValue(String s) throws SQLException
{
PGtokenizer t = new PGtokenizer(PGtokenizer.removeAngle(s), ',');
if (t.getSize() != 2)
throw new PSQLException(GT.tr("Conversion to type {0} failed: {1}.", new Object[]{type,s}), PSQLState.DATA_TYPE_MISMATCH);
try
{
center = new PGpoint(t.getToken(0));
radius = Double.valueOf(t.getToken(1)).doubleValue();
}
catch (NumberFormatException e)
{
throw new PSQLException(GT.tr("Conversion to type {0} failed: {1}.", new Object[]{type,s}), PSQLState.DATA_TYPE_MISMATCH, e);
}
}
/**
* @param obj Object to compare with
* @return true if the two circles are identical
*/
public boolean equals(Object obj)
{
if (obj instanceof PGcircle)
{
PGcircle p = (PGcircle)obj;
return p.center.equals(center) && p.radius == radius;
}
return false;
}
public int hashCode()
{
long v = Double.doubleToLongBits(radius);
return (int) (center.hashCode() ^ v ^ (v >>> 32));
}
public Object clone()
{
return new PGcircle((PGpoint)center.clone(), radius);
}
/**
* @return the PGcircle in the syntax expected by org.postgresql
*/
public String getValue()
{
return "<" + center + "," + radius + ">";
}
}
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