/*-------------------------------------------------------------------------
*
* Copyright (c) 2003-2008, PostgreSQL Global Development Group
*
* IDENTIFICATION
* $PostgreSQL: pgjdbc/org/postgresql/geometric/PGpoint.java,v 1.16 2008/01/08 06:56:28 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.awt.Point;
import java.io.Serializable;
import java.sql.SQLException;
/**
* It maps to the point datatype in org.postgresql.
*
* This implements a version of java.awt.Point, except it uses double
* to represent the coordinates.
*/
public class PGpoint extends PGobject implements Serializable, Cloneable
{
/**
* The X coordinate of the point
*/
public double x;
/**
* The Y coordinate of the point
*/
public double y;
/**
* @param x coordinate
* @param y coordinate
*/
public PGpoint(double x, double y)
{
this();
this.x = x;
this.y = y;
}
/**
* This is called mainly from the other geometric types, when a
* point is embedded within their definition.
*
* @param value Definition of this point in PostgreSQL's syntax
*/
public PGpoint(String value) throws SQLException
{
this();
setValue(value);
}
/**
* Required by the driver
*/
public PGpoint()
{
setType("point");
}
/**
* @param s Definition of this point in PostgreSQL's syntax
* @exception SQLException on conversion failure
*/
public void setValue(String s) throws SQLException
{
PGtokenizer t = new PGtokenizer(PGtokenizer.removePara(s), ',');
try
{
x = Double.valueOf(t.getToken(0)).doubleValue();
y = 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 points are identical
*/
public boolean equals(Object obj)
{
if (obj instanceof PGpoint)
{
PGpoint p = (PGpoint)obj;
return x == p.x && y == p.y;
}
return false;
}
public int hashCode()
{
long v1 = Double.doubleToLongBits(x);
long v2 = Double.doubleToLongBits(y);
return (int) (v1 ^ v2 ^ (v1 >>> 32) ^ (v2 >>> 32));
}
/**
* @return the PGpoint in the syntax expected by org.postgresql
*/
public String getValue()
{
return "(" + x + "," + y + ")";
}
/**
* Translate the point by the supplied amount.
* @param x integer amount to add on the x axis
* @param y integer amount to add on the y axis
*/
public void translate(int x, int y)
{
translate((double)x, (double)y);
}
/**
* Translate the point by the supplied amount.
* @param x double amount to add on the x axis
* @param y double amount to add on the y axis
*/
public void translate(double x, double y)
{
this.x += x;
this.y += y;
}
/**
* Moves the point to the supplied coordinates.
* @param x integer coordinate
* @param y integer coordinate
*/
public void move(int x, int y)
{
setLocation(x, y);
}
/**
* Moves the point to the supplied coordinates.
* @param x double coordinate
* @param y double coordinate
*/
public void move(double x, double y)
{
this.x = x;
this.y = y;
}
/**
* Moves the point to the supplied coordinates.
* refer to java.awt.Point for description of this
* @param x integer coordinate
* @param y integer coordinate
* @see java.awt.Point
*/
public void setLocation(int x, int y)
{
move((double)x, (double)y);
}
/**
* Moves the point to the supplied java.awt.Point
* refer to java.awt.Point for description of this
* @param p Point to move to
* @see java.awt.Point
*/
public void setLocation(Point p)
{
setLocation(p.x, p.y);
}
}