/*
* RapidMiner
*
* Copyright (C) 2001-2008 by Rapid-I and the contributors
*
* Complete list of developers available at our web site:
*
* http://rapid-i.com
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see http://www.gnu.org/licenses/.
*/
package com.rapidminer.example.set;
import java.util.Iterator;
import com.rapidminer.example.Example;
import com.rapidminer.example.ExampleSet;
/**
* This reader simply uses all examples from the parent and all available attributes.
*
* @author Ingo Mierswa
* @version $Id: AttributesExampleReader.java,v 1.3 2008/05/09 19:22:49 ingomierswa Exp $
*/
public class AttributesExampleReader extends AbstractExampleReader {
/** The parent example reader. */
private Iterator<Example> parent;
/** The used attributes are described in this example set. */
private ExampleSet exampleSet;
/** Creates a simple example reader. */
public AttributesExampleReader(Iterator<Example> parent, ExampleSet exampleSet) {
this.parent = parent;
this.exampleSet = exampleSet;
}
/** Returns true if there are more data rows. */
public boolean hasNext() {
return this.parent.hasNext();
}
/** Returns a new example based on the current data row. */
public Example next() {
if (!hasNext())
return null;
Example example = this.parent.next();
if (example == null)
return null;
return new Example(example.getDataRow(), exampleSet);
}
}