/**
* Copyright (C) 2001-2017 by RapidMiner and the contributors
*
* Complete list of developers available at our web site:
*
* http://rapidminer.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 com.rapidminer.example.Example;
import com.rapidminer.example.ExampleSet;
import java.util.Iterator;
/**
* This reader simply uses all examples from the parent and all available attributes.
*
* @author Ingo Mierswa
*/
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. */
@Override
public boolean hasNext() {
return this.parent.hasNext();
}
/** Returns a new example based on the current data row. */
@Override
public Example next() {
if (!hasNext()) {
return null;
}
Example example = this.parent.next();
if (example == null) {
return null;
}
return new Example(example.getDataRow(), exampleSet);
}
}