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JasperReports Custom Visualization Component
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2023 Cloud Software Group, 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.customvisualization.xml;
import java.io.IOException;
import java.util.List;
import net.sf.jasperreports.components.AbstractComponentXmlWriter;
import net.sf.jasperreports.components.items.Item;
import net.sf.jasperreports.components.items.ItemData;
import net.sf.jasperreports.components.items.ItemProperty;
import net.sf.jasperreports.customvisualization.CVComponent;
import net.sf.jasperreports.customvisualization.CVConstants;
import net.sf.jasperreports.engine.JRComponentElement;
import net.sf.jasperreports.engine.JRElementDataset;
import net.sf.jasperreports.engine.JasperReportsContext;
import net.sf.jasperreports.engine.component.Component;
import net.sf.jasperreports.engine.component.ComponentKey;
import net.sf.jasperreports.engine.type.EvaluationTimeEnum;
import net.sf.jasperreports.engine.type.OnErrorTypeEnum;
import net.sf.jasperreports.engine.util.JRXmlWriteHelper;
import net.sf.jasperreports.engine.util.XmlNamespace;
import net.sf.jasperreports.engine.xml.JRXmlConstants;
import net.sf.jasperreports.engine.xml.JRXmlWriter;
/**
*
* @author Giulio Toffoli ([email protected])
*/
public class CVXmlWriter extends AbstractComponentXmlWriter
{
public CVXmlWriter(JasperReportsContext jasperReportsContext)
{
super(jasperReportsContext);
}
public void writeCV(JRComponentElement componentElement, JRXmlWriter reportWriter) throws IOException
{
Component component = componentElement.getComponent();
CVComponent comp = (CVComponent) component;
JRXmlWriteHelper writer = reportWriter.getXmlWriteHelper();
ComponentKey componentKey = componentElement.getComponentKey();
XmlNamespace namespace =
new XmlNamespace(
CVConstants.NAMESPACE,
componentKey.getNamespacePrefix(),
CVConstants.XSD_LOCATION
);
writer.startElement("customvisualization", namespace);
writer.addAttribute(JRXmlConstants.ATTRIBUTE_evaluationTime, comp.getEvaluationTime(), EvaluationTimeEnum.NOW);
if (comp.getEvaluationGroup() != null && comp.getEvaluationGroup().trim().length() > 0)
{
writer.addAttribute(JRXmlConstants.ATTRIBUTE_evaluationGroup, comp.getEvaluationGroup());
}
writer.addAttribute(CVXmlFactory.ATTRIBUTE_processingClass, comp.getProcessingClass());
writer.addAttribute(CVXmlFactory.ATTRIBUTE_onErrorType, comp.getOnErrorType(), OnErrorTypeEnum.ERROR);
List itemProperties = comp.getItemProperties();
for (ItemProperty itemProperty : itemProperties)
{
writeCVItemProperty(itemProperty, writer, reportWriter, namespace, componentElement);
}
List itemDataList = comp.getItemData();
for (ItemData itemData : itemDataList)
{
if (itemData == null)
{
continue;
}
writeItemDataset(itemData, writer, reportWriter, namespace, componentElement);
}
writer.closeElement();
}
private void writeCVItemProperty(
ItemProperty itemProperty,
JRXmlWriteHelper writer,
JRXmlWriter reportWriter,
XmlNamespace namespace,
JRComponentElement componentElement
) throws IOException
{
writer.startElement(CVXmlFactory.ELEMENT_itemProperty, namespace);
writer.addAttribute(JRXmlConstants.ATTRIBUTE_name, itemProperty.getName());
if (itemProperty.getValue() != null)
{
writer.addAttribute(JRXmlConstants.ATTRIBUTE_value, itemProperty.getValue());
}
writeExpression(
JRXmlConstants.ELEMENT_valueExpression,
JRXmlWriter.JASPERREPORTS_NAMESPACE,
itemProperty.getValueExpression(),
false,
componentElement,
reportWriter
);
writer.closeElement();
}
private void writeItemDataset(
ItemData itemDataset,
JRXmlWriteHelper writer,
JRXmlWriter reportWriter,
XmlNamespace namespace,
JRComponentElement componentElement
) throws IOException
{
writer.startElement(CVXmlFactory.ELEMENT_cvData, namespace);
JRElementDataset dataset = itemDataset.getDataset();
if (dataset != null)
{
reportWriter.writeElementDataset(dataset, false);
}
/* */
List- itemList = itemDataset.getItems();
if (itemList != null && !itemList.isEmpty())
{
for (Item item : itemList)
{
writer.startElement(CVXmlFactory.ELEMENT_item, namespace);
if (item.getProperties() != null && !item.getProperties().isEmpty())
{
for (ItemProperty itemProperty : item.getProperties())
{
if (itemProperty == null)
{
continue;
}
writeCVItemProperty(itemProperty, writer, reportWriter, namespace, componentElement);
}
}
writer.closeElement();
}
}
writer.closeElement();
}
@Override
public boolean isToWrite(JRComponentElement jrce, JRXmlWriter writer)
{
return true;
}
@Override
public void writeToXml(JRComponentElement componentElement, JRXmlWriter reportWriter) throws IOException
{
Component component = componentElement.getComponent();
if (component instanceof CVComponent)
{
writeCV(componentElement, reportWriter);
}
}
}
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