/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2009 Jaspersoft Corporation. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JasperReports 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with JasperReports. If not, see <http://www.gnu.org/licenses/>.
*/
package net.sf.jasperreports.engine.design;
import net.sf.jasperreports.engine.JRConstants;
import net.sf.jasperreports.engine.JRExpression;
import net.sf.jasperreports.engine.base.JRBaseDatasetParameter;
import net.sf.jasperreports.engine.design.events.JRChangeEventsSupport;
import net.sf.jasperreports.engine.design.events.JRPropertyChangeSupport;
/**
* Implementation of {@link net.sf.jasperreports.engine.JRDatasetParameter JRDatasetParameter} used at design time.
*
* @author Lucian Chirita (lucianc@users.sourceforge.net)
* @version $Id: JRDesignDatasetParameter.java 3033 2009-08-27 11:46:22Z teodord $
*/
public class JRDesignDatasetParameter extends JRBaseDatasetParameter implements JRChangeEventsSupport
{
/**
*
*/
private static final long serialVersionUID = JRConstants.SERIAL_VERSION_UID;
public static final String PROPERTY_NAME = "name";
public static final String PROPERTY_EXPRESSION = "expression";
/**
*
*/
public void setName(String name)
{
Object old = this.name;
this.name = name;
getEventSupport().firePropertyChange(PROPERTY_NAME, old, this.name);
}
/**
*
*/
public void setExpression(JRExpression expression)
{
Object old = this.expression;
this.expression = expression;
getEventSupport().firePropertyChange(PROPERTY_EXPRESSION, old, this.expression);
}
private transient JRPropertyChangeSupport eventSupport;
public JRPropertyChangeSupport getEventSupport()
{
synchronized (this)
{
if (eventSupport == null)
{
eventSupport = new JRPropertyChangeSupport(this);
}
}
return eventSupport;
}
}