public NotTerm(SearchTerm term) 
{
        this.term = term;
}

 public boolean equals(Object other) 
{
        if (other == this) return true;
        if (other instanceof NotTerm == false) return false;
        return term.equals(((NotTerm) other).term);
}

 public SearchTerm getTerm() 
{
        return term;
}

 public int hashCode() 
{
        return term.hashCode();
}

 public boolean match(Message message) 
{
        return !term.match(message);
}