/**
* ========================================
* JFreeReport : a free Java report library
* ========================================
*
* Project Info: http://reporting.pentaho.org/
*
* (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors.
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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 this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ------------
* $Id: TypedPropertyReadHandler.java 6659 2008-12-02 15:35:06Z tmorgner $
* ------------
* (C) Copyright 2000-2005, by Object Refinery Limited.
* (C) Copyright 2005-2007, by Pentaho Corporation.
*/
package org.jfree.report.modules.factories.report.flow;
import java.beans.IntrospectionException;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import org.jfree.report.util.CharacterEntityParser;
import org.jfree.report.util.beans.BeanException;
import org.jfree.report.util.beans.BeanUtility;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.pentaho.reporting.libraries.xmlns.parser.PropertyReadHandler;
import org.pentaho.reporting.libraries.xmlns.parser.Base64;
import org.pentaho.reporting.libraries.xmlns.parser.XmlReadHandler;
import org.pentaho.reporting.libraries.xmlns.parser.ParseException;
import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
import org.pentaho.reporting.libraries.base.util.DebugLog;
/**
* Creation-Date: 09.04.2006, 12:58:24
*
* @author Thomas Morgner
*/
public class TypedPropertyReadHandler extends PropertyReadHandler
{
private boolean plainContent;
private String encoding;
private String className;
private BeanUtility beanUtility;
private String expressionName;
private CharacterEntityParser entityParser;
public TypedPropertyReadHandler(final BeanUtility beanDescription,
final String expressionName,
final CharacterEntityParser entityParser)
{
if (beanDescription == null)
{
throw new NullPointerException(
"Expression must not be null");
}
if (entityParser == null)
{
throw new NullPointerException(
"EntityParser must not be null");
}
this.expressionName = expressionName;
this.beanUtility = beanDescription;
this.entityParser = entityParser;
this.plainContent = true;
}
/**
* Done parsing.
*
* @throws SAXException if there is a parsing error.
*/
protected void doneParsing() throws SAXException
{
super.doneParsing();
try
{
if (plainContent)
{
final String result = getResult();
if ("base64".equals(encoding))
{
final byte[] data = Base64.decode(result.trim().toCharArray());
final ByteArrayInputStream bin = new ByteArrayInputStream(data);
final ObjectInputStream oin = new ObjectInputStream(bin);
final Object value = oin.readObject();
beanUtility.setProperty(getName(), value);
}
else
{
if (className != null)
{
ClassLoader cl = ObjectUtilities.getClassLoader
(TypedPropertyReadHandler.class);
Class c = cl.loadClass(className);
beanUtility.setPropertyAsString
(getName(), c, entityParser.decodeEntities(result));
}
else
{
beanUtility.setPropertyAsString
(getName(), entityParser.decodeEntities(result));
}
}
}
}
catch (BeanException e)
{
e.printStackTrace();
throw new ParseException("Unable to assign property '" + getName()
+ "' to expression '" + expressionName + "'", e, getLocator());
}
catch (ClassNotFoundException e)
{
throw new ParseException("Unable to assign property '" + getName()
+ "' to expression '" + expressionName + "'", e, getLocator());
}
catch (IOException e)
{
throw new ParseException("Unable to assign property '" + getName()
+ "' to expression '" + expressionName + "'", e, getLocator());
}
}
/**
* Starts parsing.
*
* @param attrs the attributes.
* @throws SAXException if there is a parsing error.
*/
protected void startParsing(final Attributes attrs) throws SAXException
{
super.startParsing(attrs);
className = attrs.getValue(getUri(), "class");
encoding = attrs.getValue(getUri(), "encoding");
if (encoding == null)
{
encoding = "text";
}
else if (("text".equals(encoding) == false) && "base64".equals(
encoding) == false)
{
DebugLog.log("Invalid value for attribute 'encoding'. Defaulting to 'text'");
encoding = "text";
}
}
/**
* Returns the handler for a child element.
*
* @param tagName the tag name.
* @param atts the attributes.
* @return the handler or null, if the tagname is invalid.
* @throws SAXException if there is a parsing error.
*/
protected XmlReadHandler getHandlerForChild(final String uri,
final String tagName,
final Attributes atts)
throws SAXException
{
if (isSameNamespace(uri) == false)
{
return null;
}
if ("property".equals(tagName))
{
plainContent = false;
final String name = atts.getValue(uri, "name");
if (name == null)
{
throw new ParseException("Required attribute 'name' is missing", getLocator());
}
try
{
final Class type = beanUtility.getPropertyType(name);
final Object property = type.newInstance();
final BeanUtility propertyUtility = new BeanUtility(property);
return new TypedPropertyReadHandler
(propertyUtility, expressionName, entityParser);
}
catch (BeanException e)
{
throw new ParseException("Property '" + name + "' for expression '" +
className + "' is not valid. The specified class was not found.",
e, getRootHandler().getDocumentLocator());
}
catch (IllegalAccessException e)
{
throw new ParseException(
"Property '" + name + "' for expression '" + className +
"' is not valid. The specified class was not found.",
e, getRootHandler().getDocumentLocator());
}
catch (InstantiationException e)
{
throw new ParseException(
"Property '" + name + "' for expression '" + className +
"' is not valid. The specified class cannot be instantiated.",
e, getRootHandler().getDocumentLocator());
}
catch (IntrospectionException e)
{
throw new ParseException(
"Property '" + name + "' for expression '" + className +
"' is not valid. Introspection failed for this expression.",
e, getRootHandler().getDocumentLocator());
}
}
return null;
}
}