/*
* 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.operator.visualization;
import com.rapidminer.example.Attribute;
import com.rapidminer.example.ExampleSet;
import com.rapidminer.gui.ExampleVisualizer;
import com.rapidminer.operator.IOObject;
import com.rapidminer.operator.Operator;
import com.rapidminer.operator.OperatorDescription;
import com.rapidminer.operator.OperatorException;
import com.rapidminer.operator.UserError;
import com.rapidminer.tools.ObjectVisualizerService;
/**
* Remembers the given example set and uses the ids provided by this set
* for the query for the corresponding example and the creation of a
* generic example visualizer. This visualizer simply displays the attribute
* values of the example. Adding this operator is often necessary to
* enable the visualization of single examples in the provided plotter
* components.
*
* @author Ingo Mierswa
* @version $Id: ExampleVisualizationOperator.java,v 2.11 2006/03/21 15:35:42
* ingomierswa Exp $
*/
public class ExampleVisualizationOperator extends Operator {
private static final Class[] INPUT_CLASSES = { ExampleSet.class };
private static final Class[] OUTPUT_CLASSES = { ExampleSet.class };
public ExampleVisualizationOperator(OperatorDescription description) {
super(description);
}
public IOObject[] apply() throws OperatorException {
ExampleSet exampleSet = getInput(ExampleSet.class);
Attribute idAttribute = exampleSet.getAttributes().getId();
if (idAttribute == null) {
throw new UserError(this, 113, "Id");
}
ObjectVisualizerService.addObjectVisualizer(new ExampleVisualizer(exampleSet));
return new IOObject[] { exampleSet };
}
public Class<?>[] getInputClasses() {
return INPUT_CLASSES;
}
public Class<?>[] getOutputClasses() {
return OUTPUT_CLASSES;
}
}