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

java.lang.Object
  extended by 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