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package org.postgresql.geometric;
import java.io.*;
import java.sql.*;
import org.postgresql.util.*;
/*
* This implements the polygon datatype within PostgreSQL.
*/
public class PGpolygon extends PGobject implements Serializable, Cloneable
{
/*
* The points defining the polygon
*/
public PGpoint points[];
/*
* Creates a polygon using an array of PGpoints
*
* @param points the points defining the polygon
*/
public PGpolygon(PGpoint[] points)
{
this();
this.points = points;
}
/*
* @param s definition of the circle in PostgreSQL's syntax.
* @exception SQLException on conversion failure
*/
public PGpolygon(String s) throws SQLException
{
this();
setValue(s);
}
/*
* Required by the driver
*/
public PGpolygon()
{
setType("polygon");
}
/*
* @param s Definition of the polygon in PostgreSQL's syntax
* @exception SQLException on conversion failure
*/
public void setValue(String s) throws SQLException
{
PGtokenizer t = new PGtokenizer(PGtokenizer.removePara(s), ',');
int npoints = t.getSize();
points = new PGpoint[npoints];
for (int p = 0;p < npoints;p++)
points[p] = new PGpoint(t.getToken(p));
}
/*
* @param obj Object to compare with
* @return true if the two boxes are identical
*/
public boolean equals(Object obj)
{
if (obj instanceof PGpolygon)
{
PGpolygon p = (PGpolygon)obj;
if (p.points.length != points.length)
return false;
for (int i = 0;i < points.length;i++)
if (!points[i].equals(p.points[i]))
return false;
return true;
}
return false;
}
/*
* This must be overidden to allow the object to be cloned
*/
public Object clone()
{
PGpoint ary[] = new PGpoint[points.length];
for (int i = 0;i < points.length;i++)
ary[i] = (PGpoint)points[i].clone();
return new PGpolygon(ary);
}
/*
* @return the PGpolygon in the syntax expected by org.postgresql
*/
public String getValue()
{
StringBuffer b = new StringBuffer();
b.append("(");
for (int p = 0;p < points.length;p++)
{
if (p > 0)
b.append(",");
b.append(points[p].toString());
}
b.append(")");
return b.toString();
}
}
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