uba.db.sql.language
Class Join

java.lang.Object
  uba.db.sql.language.Join

All Implemented Interfaces:

SelectionSource, Visitable

public class Join
extends java.lang.Object
implements SelectionSource

Representa un "selection source" que es el resultado de hacer un JOIN entre dos selection sources.

Version:

$Revision: 1.3 $

Constructor Summary

Join(SelectionSource left, SelectionSource right)
Crea un join de dos selection sources.

Method Summary

void	accept(Visitor visitor) Este método es enviado para aceptar un visitor, las clases concretas deben enviar el mensaje "visit" correspondiente.
boolean	equals(java.lang.Object obj)
int	hashCode()
SelectionSource	left()
SelectionSource	right()
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Join

public Join(SelectionSource left,
            SelectionSource right)

Crea un join de dos selection sources.

Parameters:

left - un selection source

right - otro selection source

Method Detail

left

public SelectionSource left()

right

public SelectionSource right()

accept

public void accept(Visitor visitor)

Description copied from interface: Visitable

Este método es enviado para aceptar un visitor, las clases concretas deben enviar el mensaje "visit" correspondiente.

Specified by:

accept in interface Visitable

Parameters:

visitor - una instancia de visitor (que no debe ser null).

See Also:

Visitable.accept(uba.db.sql.language.Visitor)

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

See Also:

Object.equals(java.lang.Object)

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

See Also:

Object.hashCode()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

See Also:

Object.toString()