PGbox.java
上传用户:blenddy
上传日期:2007-01-07
资源大小:6495k
文件大小:2k
- package postgresql.geometric;
- import java.io.*;
- import java.sql.*;
- import postgresql.util.*;
- /**
- * This represents the box datatype within postgresql.
- */
- public class PGbox extends PGobject implements Serializable,Cloneable
- {
- /**
- * These are the two points.
- */
- public PGpoint point[] = new PGpoint[2];
-
- /**
- * @param x1 first x coordinate
- * @param y1 first y coordinate
- * @param x2 second x coordinate
- * @param y2 second y coordinate
- */
- public PGbox(double x1,double y1,double x2,double y2)
- {
- this();
- this.point[0] = new PGpoint(x1,y1);
- this.point[1] = new PGpoint(x2,y2);
- }
-
- /**
- * @param p1 first point
- * @param p2 second point
- */
- public PGbox(PGpoint p1,PGpoint p2)
- {
- this();
- this.point[0] = p1;
- this.point[1] = p2;
- }
-
- /**
- * @param s Box definition in PostgreSQL syntax
- * @exception SQLException if definition is invalid
- */
- public PGbox(String s) throws SQLException
- {
- this();
- setValue(s);
- }
-
- /**
- * Required constructor
- */
- public PGbox()
- {
- setType("box");
- }
-
- /**
- * This method sets the value of this object. It should be overidden,
- * but still called by subclasses.
- *
- * @param value a string representation of the value of the object
- * @exception SQLException thrown if value is invalid for this type
- */
- public void setValue(String value) throws SQLException
- {
- PGtokenizer t = new PGtokenizer(value,',');
- if(t.getSize() != 2)
- throw new PSQLException("postgresql.geo.box",value);
-
- 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 boxes are identical
- */
- public boolean equals(Object obj)
- {
- if(obj instanceof PGbox) {
- PGbox p = (PGbox)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;
- }
-
- /**
- * This must be overidden to allow the object to be cloned
- */
- public Object clone()
- {
- return new PGbox((PGpoint)point[0].clone(),(PGpoint)point[1].clone());
- }
-
- /**
- * @return the PGbox in the syntax expected by postgresql
- */
- public String getValue()
- {
- return point[0].toString()+","+point[1].toString();
- }
- }