package adql.query;
/*
* This file is part of ADQLLibrary.
*
* ADQLLibrary is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* ADQLLibrary is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with ADQLLibrary. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2012 - UDS/Centre de Données astronomiques de Strasbourg (CDS)
*/
import java.util.NoSuchElementException;
/**
* An ADQL iterator which has no ADQL objects on which iterate.
*
* @author Grégory Mantelet (CDS)
* @version 06/2011
*/
public class NullADQLIterator implements ADQLIterator {
public boolean hasNext(){
return false;
}
public ADQLObject next(){
throw new NoSuchElementException();
}
public void remove(){
throw new UnsupportedOperationException();
}
public void replace(ADQLObject replacer) throws UnsupportedOperationException, IllegalStateException{
throw new UnsupportedOperationException();
}
}