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Free Java Reporting Library
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2022 TIBCO Software Inc. 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 .
*/
package net.sf.jasperreports.engine.xml;
import org.apache.commons.beanutils.BeanUtils;
import org.apache.commons.digester.Rule;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.xml.sax.Attributes;
/**
*
* @author Lucian Chirita ([email protected])
*/
public abstract class TransformedPropertyRule extends Rule
{
private static final Log log = LogFactory.getLog(TransformedPropertyRule.class);
protected final String attributeName;
protected final String propertyName;
protected TransformedPropertyRule(String attributeName)
{
this(attributeName, attributeName);
}
protected TransformedPropertyRule(String attributeName, String propertyName)
{
this.attributeName = attributeName;
this.propertyName = propertyName;
}
@Override
public void begin(String namespace, String name, Attributes attributes)
throws Exception
{
String attrValue = attributes.getValue(attributeName);
if (attrValue != null)
{
Object value = toPropertyValue(attrValue);
if (value != null)
{
Object top = digester.peek();
if (log.isDebugEnabled())
{
log.debug("Setting property " + propertyName + " on " + top
+ " to " + value + " from attribute \"" + attrValue + "\"");
}
BeanUtils.setProperty(top, propertyName, value);
}
else
{
if (log.isDebugEnabled())
{
log.debug("Attribute value " + attrValue
+ " resulted in null property value, not setting");
}
}
}
}
protected abstract Object toPropertyValue(String attributeValue);
}