it.unimi.di.mg4j.query.nodes
Class False

java.lang.Object
  it.unimi.di.mg4j.query.nodes.False

All Implemented Interfaces:

Query, Serializable

public class False
extends Object
implements Query

A node representing falseness (i.e., no documents are returned).

Author:

Sebastiano Vigna

See Also:

Serialized Form

Constructor Summary

False()

Method Summary

<T> T	accept(QueryBuilderVisitor<T> visitor) Accepts a visitor.
boolean	equals(Object o)
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

False

public False()

Method Detail

toString

public String toString()

Overrides:

toString in class Object

accept

public <T> T accept(QueryBuilderVisitor<T> visitor)
         throws QueryBuilderVisitorException

Description copied from interface: Query

Accepts a visitor.

Specified by:

accept in interface Query

Parameters:

visitor - the visitor.

Returns:

the result of the visit, or null if the visit should stop.

Throws:

QueryBuilderVisitorException

See Also:

Query

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object