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/*-------------------------------------------------------------------------
*
* Copyright (c) 2003-2008, PostgreSQL Global Development Group
*
* IDENTIFICATION
* $PostgreSQL: pgjdbc/org/postgresql/geometric/PGline.java,v 1.15 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.io.Serializable;
import java.sql.SQLException;
/**
* This implements a line consisting of two points.
*
* Currently line is not yet implemented in the backend, but this class
* ensures that when it's done were ready for it.
*/
public class PGline extends PGobject implements Serializable, Cloneable
{
/**
* These are the two points.
*/
public PGpoint point[] = new PGpoint[2];
/**
* @param x1 coordinate for first point
* @param y1 coordinate for first point
* @param x2 coordinate for second point
* @param y2 coordinate for second point
*/
public PGline(double x1, double y1, double x2, double y2)
{
this(new PGpoint(x1, y1), new PGpoint(x2, y2));
}
/**
* @param p1 first point
* @param p2 second point
*/
public PGline(PGpoint p1, PGpoint p2)
{
this();
this.point[0] = p1;
this.point[1] = p2;
}
/**
* @param s definition of the line in PostgreSQL's syntax.
* @exception SQLException on conversion failure
*/
public PGline(String s) throws SQLException
{
this();
setValue(s);
}
/**
* reuired by the driver
*/
public PGline()
{
setType("line");
}
/**
* @param s Definition of the line in PostgreSQL's syntax
* @exception SQLException on conversion failure
*/
public void setValue(String s) throws SQLException
{
PGtokenizer t = new PGtokenizer(PGtokenizer.removeBox(s), ',');
if (t.getSize() != 2)
throw new PSQLException(GT.tr("Conversion to type {0} failed: {1}.", new Object[]{type,s}), PSQLState.DATA_TYPE_MISMATCH);
point[0] = new PGpoint(t.getToken(0));
point[1] = new PGpoint(t.getToken(1));
}
/**
* @param obj Object to compare with
* @return true if the two lines are identical
*/
public boolean equals(Object obj)
{
if (obj instanceof PGline)
{
PGline p = (PGline)obj;
return (p.point[0].equals(point[0]) && p.point[1].equals(point[1])) ||
(p.point[0].equals(point[1]) && p.point[1].equals(point[0]));
}
return false;
}
public int hashCode() {
return point[0].hashCode() ^ point[1].hashCode();
}
public Object clone() throws CloneNotSupportedException
{
PGline newPGline = (PGline) super.clone();
if( newPGline.point != null )
{
newPGline.point = (PGpoint[]) newPGline.point.clone();
for( int i = 0; i < newPGline.point.length; ++i )
if( newPGline.point[i] != null )
newPGline.point[i] = (PGpoint) newPGline.point[i].clone();
}
return newPGline;
}
/**
* @return the PGline in the syntax expected by org.postgresql
*/
public String getValue()
{
return "[" + point[0] + "," + point[1] + "]";
}
}
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