/*
* Copyright (c) 2003, PostgreSQL Global Development Group
* See the LICENSE file in the project root for more information.
*/
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 lseg (line segment) consisting of two points.
*/
public class
PGlseg 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
PGlseg(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
PGlseg(
PGpoint p1,
PGpoint p2) {
this();
this.
point[0] =
p1;
this.
point[1] =
p2;
}
/**
* @param s definition of the line segment in PostgreSQL's syntax.
* @throws SQLException on conversion failure
*/
public
PGlseg(
String s) throws
SQLException {
this();
setValue(
s);
}
/**
* required by the driver.
*/
public
PGlseg() {
setType("lseg");
}
/**
* @param s Definition of the line segment in PostgreSQL's syntax
* @throws SQLException on conversion failure
*/
@
Override
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}.",
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 line segments are identical
*/
public boolean
equals(
Object obj) {
if (
obj instanceof
PGlseg) {
PGlseg p = (
PGlseg)
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 {
PGlseg newPGlseg = (
PGlseg) super.clone();
if (
newPGlseg.
point != null) {
newPGlseg.
point = (
PGpoint[])
newPGlseg.
point.
clone();
for (int
i = 0;
i <
newPGlseg.
point.length; ++
i) {
if (
newPGlseg.
point[
i] != null) {
newPGlseg.
point[
i] = (
PGpoint)
newPGlseg.
point[
i].
clone();
}
}
}
return
newPGlseg;
}
/**
* @return the PGlseg in the syntax expected by org.postgresql
*/
public
String getValue() {
return "[" +
point[0] + "," +
point[1] + "]";
}
}