/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* 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 Lesser General Public License for more details.
*
* Copyright (c) 2001 - 2009 Object Refinery Ltd, Pentaho Corporation and Contributors.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.modules.parser.base.common;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.PropertyAttributes;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.compat.CompatibilityMapperUtil;
import org.pentaho.reporting.engine.classic.core.util.beans.BeanException;
import org.pentaho.reporting.engine.classic.core.util.beans.ConverterRegistry;
import org.pentaho.reporting.engine.classic.core.util.beans.StringValueConverter;
import org.pentaho.reporting.engine.classic.core.util.beans.ValueConverter;
import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
import org.pentaho.reporting.libraries.xmlns.parser.ParseException;
import org.xml.sax.SAXException;
public class PropertyReferenceReadHandler extends PropertyStringReadHandler
{
private static final Log logger = LogFactory.getLog(PropertyReferenceReadHandler.class);
private static final String CLASS_ATT = "class";
private static final String NAME_ATT = "name";
private String propertyName;
private Object value;
private ValueConverter valueType;
public PropertyReferenceReadHandler()
{
}
/**
* Starts parsing.
*
* @param attrs the attributes.
* @throws org.xml.sax.SAXException if there is a parsing error.
*/
public void startParsing(final PropertyAttributes attrs)
throws SAXException
{
super.startParsing(attrs);
propertyName = attrs.getValue(getUri(), PropertyReferenceReadHandler.NAME_ATT);
if (propertyName == null)
{
throw new ParseException("Required attribute 'name' is null.", getLocator());
}
final String className = CompatibilityMapperUtil.mapClassName
(attrs.getValue(getUri(), PropertyReferenceReadHandler.CLASS_ATT));
if (className == null)
{
valueType = new StringValueConverter();
}
else
{
try
{
final ClassLoader classLoader = ObjectUtilities.getClassLoader(getClass());
final Class c = Class.forName(className);
valueType = ConverterRegistry.getInstance().getValueConverter(c);
if (valueType == null)
{
PropertyReferenceReadHandler.logger.warn("Unable to find a suitable value-converter for " + c);
valueType = new StringValueConverter();
}
}
catch (Exception e)
{
throw new SAXException("Attribute 'class' is invalid.");
}
}
}
/**
* Done parsing.
*
* @throws org.xml.sax.SAXException if there is a parsing error.
*/
public void doneParsing()
throws SAXException
{
super.doneParsing();
final String result = getResult();
final boolean strictPropertyErrorHandling = (result.trim().length() != 0);
try
{
value = valueType.toPropertyValue(result);
}
catch (BeanException e)
{
if (strictPropertyErrorHandling)
{
throw new ParseException("Failed to parse property value for property " + propertyName, e);
}
else
{
PropertyReferenceReadHandler.logger.warn("Failed to parse property value for property: " + propertyName, e);
}
}
}
/**
* Returns the object for this element or null, if this element does not create an object.
*
* @return the object.
*/
public Object getObject()
{
return value;
}
public String getPropertyName()
{
return propertyName;
}
}