/*
* 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 - 2013 Object Refinery Ltd, Pentaho Corporation and Contributors.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.modules.parser.base.common;
import java.util.ArrayList;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.pentaho.reporting.engine.classic.core.AbstractReportDefinition;
import org.pentaho.reporting.engine.classic.core.MasterReport;
import org.pentaho.reporting.engine.classic.core.function.Expression;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.PropertyAttributes;
import org.pentaho.reporting.engine.classic.core.parameters.ModifiableReportParameterDefinition;
import org.pentaho.reporting.engine.classic.core.parameters.ParameterDefinitionEntry;
import org.pentaho.reporting.engine.classic.core.parameters.PlainParameter;
import org.pentaho.reporting.libraries.xmlns.parser.XmlReadHandler;
import org.xml.sax.SAXException;
public class FunctionsReadHandler extends AbstractPropertyXmlReadHandler
{
private static Log logger = LogFactory.getLog(FunctionsReadHandler.class);
private AbstractReportDefinition report;
private ArrayList<ExpressionReadHandler> expressionHandlers;
private ArrayList<PropertyReferenceReadHandler> propertyRefs;
public FunctionsReadHandler(final AbstractReportDefinition report)
{
this.report = report;
this.expressionHandlers = new ArrayList<ExpressionReadHandler>();
this.propertyRefs = new ArrayList<PropertyReferenceReadHandler>();
}
/**
* Returns the handler for a child element.
*
* @param tagName the tag name.
* @param attrs the attributes.
* @return the handler or null, if the tagname is invalid.
* @throws org.xml.sax.SAXException if there is a parsing error.
*/
protected XmlReadHandler getHandlerForChild(final String uri,
final String tagName,
final PropertyAttributes attrs)
throws SAXException
{
if (isSameNamespace(uri) == false)
{
return null;
}
if ("expression".equals(tagName) || "function".equals(tagName))
{
final ExpressionReadHandler readHandler = new ExpressionReadHandler();
expressionHandlers.add(readHandler);
return readHandler;
}
else if ("property-ref".equals(tagName))
{
final PropertyReferenceReadHandler readHandler = new PropertyReferenceReadHandler();
propertyRefs.add(readHandler);
return readHandler;
}
return null;
}
/**
* Done parsing.
*
* @throws org.xml.sax.SAXException if there is a parsing error.
*/
protected void doneParsing()
throws SAXException
{
for (int i = 0; i < expressionHandlers.size(); i++)
{
final ExpressionReadHandler readHandler = (ExpressionReadHandler) expressionHandlers.get(i);
if (readHandler.getObject() != null)
{
report.addExpression((Expression) readHandler.getObject());
}
}
final MasterReport master;
if (report instanceof MasterReport)
{
master = (MasterReport) report;
}
else
{
master = null;
}
for (int i = 0; i < propertyRefs.size(); i++)
{
final PropertyReferenceReadHandler readHandler = propertyRefs.get(i);
final Object object = readHandler.getObject();
if (object != null)
{
if (object instanceof String)
{
final String text = (String) object;
if (text.length() == 0)
{
continue;
}
}
if (master != null)
{
final ParameterDefinitionEntry[] parameterDefinitions = master.getParameterDefinition().getParameterDefinitions();
boolean foundParameter = false;
for (int j = 0; j < parameterDefinitions.length; j++)
{
final ParameterDefinitionEntry definition = parameterDefinitions[j];
if (readHandler.getPropertyName().equals(definition.getName()))
{
foundParameter = true;
break;
}
}
if (foundParameter == false)
{
if (master.getParameterDefinition() instanceof ModifiableReportParameterDefinition)
{
final ModifiableReportParameterDefinition parameterDefinition =
(ModifiableReportParameterDefinition) master.getParameterDefinition();
parameterDefinition.addParameterDefinition(new PlainParameter(readHandler.getPropertyName()));
}
}
master.getParameterValues().put(readHandler.getPropertyName(), object);
}
else
{
logger.warn("Subreports are not supposed to have " +
"parameter nor report properties. Ignoring definition for '" + readHandler.getPropertyName() + ".");
}
}
}
}
/**
* Returns the object for this element or null, if this element does not create an object.
*
* @return the object.
*/
public Object getObject()
{
return null;
}
}