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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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* Copyright (C) 2002 University of Waikato, Hamilton, New Zealand
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package weka.gui.beans;
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import weka.core.Instances;
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import java.util.EventObject;
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* Event encapsulating a data set
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* @author <a href="mailto:mhall@cs.waikato.ac.nz">Mark Hall</a>
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* @version $Revision: 1.4 $
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public class DataSetEvent
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/** for serialization */
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private static final long serialVersionUID = -5111218447577318057L;
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private Instances m_dataSet;
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private boolean m_structureOnly;
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public DataSetEvent(Object source, Instances dataSet) {
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if (m_dataSet != null && m_dataSet.numInstances() == 0) {
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m_structureOnly = true;
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* Return the instances of the data set
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* @return an <code>Instances</code> value
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public Instances getDataSet() {
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* Returns true if the encapsulated instances
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* contain just header information
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* @return true if only header information is
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* available in this DataSetEvent
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public boolean isStructureOnly() {
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return m_structureOnly;