/*
* 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) 2009 Pentaho Corporation. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.extensions.parsers.reportdesigner.datasets;
import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.HashMap;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.PropertyAttributes;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.common.PropertyStringReadHandler;
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.BeanUtility;
import org.pentaho.reporting.engine.classic.extensions.parsers.reportdesigner.converter.ObjectConverterFactory;
import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
import org.pentaho.reporting.libraries.xmlns.parser.ParseException;
import org.pentaho.reporting.libraries.xmlns.parser.PropertyReadHandler;
import org.pentaho.reporting.libraries.xmlns.parser.XmlReadHandler;
import org.xml.sax.SAXException;
/**
* Todo: Document Me
*
* @author Thomas Morgner
*/
public class DesignerExpressionPropertyReadHandler extends PropertyStringReadHandler
{
public static final String NAME_ATT = "name";
public static final String CLASS_ATT = "class";
private BeanUtility beanUtility;
private String propertyName;
private String propertyType;
private String expressionName;
private boolean array;
private ArrayList arrayProperties;
public DesignerExpressionPropertyReadHandler(final BeanUtility expression,
final String expressionName)
{
if (expression == null)
{
throw new NullPointerException();
}
this.arrayProperties = new ArrayList();
this.expressionName = expressionName;
this.beanUtility = expression;
}
/**
* 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);
propertyType = CompatibilityMapperUtil.mapClassName
(attrs.getValue(getUri(), DesignerExpressionPropertyReadHandler.CLASS_ATT));
propertyName = attrs.getValue(getUri(), DesignerExpressionPropertyReadHandler.NAME_ATT);
if (propertyName == null)
{
throw new ParseException("Required attribute 'name' is null.", getLocator());
}
final String value = attrs.getValue(getUri(), "array");
if (value != null)
{
// SIC! This is how it is parsed ...
this.array = true;
}
}
protected XmlReadHandler getHandlerForChild(final String uri,
final String tagName,
final PropertyAttributes attrs) throws SAXException
{
if (array == false)
{
return null;
}
if (isSameNamespace(uri) && "property".equals(tagName))
{
final PropertyReadHandler readHandler = new PropertyReadHandler();
arrayProperties.add(readHandler);
return readHandler;
}
return super.getHandlerForChild(uri, tagName, attrs);
}
/**
* Done parsing.
*
* @throws org.xml.sax.SAXException if there is a parsing error.
*/
public void doneParsing()
throws SAXException
{
super.doneParsing();
final String result = getResult();
if (beanUtility == null)
{
throw new ParseException("No current beanUtility", getLocator());
}
try
{
if (array)
{
final Class type = beanUtility.getPropertyType(propertyName);
final HashMap values = new HashMap();
final int elementCount = arrayProperties.size();
for (int i = 0; i < elementCount; i++)
{
final PropertyReadHandler handler = (PropertyReadHandler) arrayProperties.get(i);
values.put(handler.getName(), handler.getResult());
}
final Class componentType = type.getComponentType();
final ArrayList realValues = new ArrayList();
for (int i = 0; i < elementCount; i++)
{
final String text = (String) values.get(String.valueOf(i));
if (text == null)
{
throw new ParseException("Disrupted array - dont play games with me!", getLocator());
}
realValues.add(ObjectConverterFactory.convert(componentType, text, getLocator()));
}
final Object[] o = (Object[]) Array.newInstance(type.getComponentType(), realValues.size());
final Object[] objects = realValues.toArray(o);
beanUtility.setProperty(propertyName, objects);
return;
}
if (propertyType != null)
{
final ClassLoader cl = ObjectUtilities.getClassLoader(DesignerExpressionPropertyReadHandler.class);
final Class c = Class.forName(propertyType, false, cl);
beanUtility.setPropertyAsString(propertyName, c, result);
}
else
{
beanUtility.setProperty(propertyName, ObjectConverterFactory.convert
(beanUtility.getPropertyType(propertyName), result, getLocator()));
}
}
catch (BeanException e)
{
if (isIgnorable())
{
return;
}
throw new ParseException("Unable to assign property '" + propertyName
+ "' to expression '" + expressionName + '\'', e, getLocator());
}
catch (ClassNotFoundException e)
{
if (isIgnorable())
{
return;
}
throw new ParseException("Unable to assign property '" + propertyName
+ "' to expression '" + expressionName + '\'', e, getLocator());
}
}
/**
* Returns the object for this element or null, if this element does not create an
* object.
*
* @return the object.
*/
public Object getObject()
{
return null;
}
public boolean isIgnorable()
{
if ("position".equals(propertyName))
{
return true;
}
if ("minimumSize".equals(propertyName))
{
return true;
}
if ("preferredSize".equals(propertyName))
{
return true;
}
if ("maximumSize".equals(propertyName))
{
return true;
}
if ("background".equals(propertyName))
{
return true;
}
if ("dynamicContent".equals(propertyName))
{
return true;
}
return false;
}
}