/*
* 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.scriptlets;
import java.util.ArrayList;
import java.util.List;
import net.sf.jasperreports.engine.JRAbstractScriptlet;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRParameter;
import net.sf.jasperreports.engine.JRScriptlet;
import net.sf.jasperreports.engine.util.JRClassLoader;
/**
* @author Teodor Danciu (teodord@users.sourceforge.net)
* @version $Id: DefaultScriptletFactory.java 3687 2010-04-06 09:50:42Z shertage $
*/
public final class DefaultScriptletFactory implements ScriptletFactory
{
private static final DefaultScriptletFactory INSTANCE = new DefaultScriptletFactory();
private DefaultScriptletFactory()
{
}
/**
*
*/
public static DefaultScriptletFactory getInstance()
{
return INSTANCE;
}
/**
*
*/
public List getScriplets(ScriptletFactoryContext context) throws JRException
{
List scriptlets = new ArrayList();
JRAbstractScriptlet scriptlet = (JRAbstractScriptlet)context.getParameterValues().get(JRParameter.REPORT_SCRIPTLET);
if (scriptlet == null)
{
String scriptletClassName = context.getDataset().getScriptletClass();
if (scriptletClassName != null)
{
scriptlet = getScriptlet(scriptletClassName);
context.getParameterValues().put(JRParameter.REPORT_SCRIPTLET, scriptlet);
}
}
if (scriptlet != null)
{
scriptlets.add(scriptlet);
}
JRScriptlet[] scriptletsArray = context.getDataset().getScriptlets();
if (scriptletsArray != null)
{
for (int i = 0; i < scriptletsArray.length; i++)
{
String paramName = scriptletsArray[i].getName()
+ JRScriptlet.SCRIPTLET_PARAMETER_NAME_SUFFIX;
scriptlet = (JRAbstractScriptlet)context.getParameterValues().get(paramName);
if (scriptlet == null)
{
scriptlet = getScriptlet(scriptletsArray[i].getValueClassName());
context.getParameterValues().put(paramName, scriptlet);
}
scriptlets.add(scriptlet);
}
}
return scriptlets;
}
/**
*
*/
protected JRAbstractScriptlet getScriptlet(String scriptletClassName) throws JRException
{
JRAbstractScriptlet scriptlet = null;
try
{
Class scriptletClass = JRClassLoader.loadClassForName(scriptletClassName);
scriptlet = (JRAbstractScriptlet) scriptletClass.newInstance();
}
catch (ClassNotFoundException e)
{
throw new JRException("Error loading scriptlet class : " + scriptletClassName, e);
}
catch (Exception e)
{
throw new JRException("Error creating scriptlet class instance : " + scriptletClassName, e);
}
return scriptlet;
}
}