/*
 * SSSync, a Simple and Stupid Synchronizer for data with multi-valued attributes
 * Copyright (C) 2014  Ludovic Pouzenc <ludovic@pouzenc.fr>
 *  
 * This file is part of SSSync.
 *
 *  SSSync is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  SSSync 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with SSSync.  If not, see <http://www.gnu.org/licenses/>
 */

package data.io.stub;

import java.util.Iterator;
import java.util.NoSuchElementException;

import data.MVDataEntry;
import data.io.AbstractMVDataReader;

/**
 * Stub reader implementation for automated tests.
 *  
 * @author lpouzenc
 */
public class StubDataReader extends AbstractMVDataReader {

	private final MVDataEntry fakeEntries[];
	private int cursorRead;
	
	public StubDataReader(String dataSourceName, MVDataEntry[] fakeEntries) {
		this.dataSourceName = dataSourceName;
		this.fakeEntries = fakeEntries.clone();
	}

	@Override
	public Iterator<MVDataEntry> iterator() {
		this.cursorRead = 0;
		return this;
	}

	@Override
	public boolean hasNext() {
		return cursorRead < fakeEntries.length;
	}

	@Override
	public MVDataEntry next() {
		if ( ! hasNext() ) {
			throw new NoSuchElementException();
		}
		return fakeEntries[cursorRead++];
	}

}