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Free Java Reporting Library
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2019 TIBCO Software 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.engine.base;
import java.io.IOException;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import net.sf.jasperreports.engine.JRConstants;
import net.sf.jasperreports.engine.JRPrintElement;
import net.sf.jasperreports.engine.fill.JREvaluationTime;
import net.sf.jasperreports.engine.util.Pair;
import net.sf.jasperreports.engine.virtualization.VirtualizationInput;
import net.sf.jasperreports.engine.virtualization.VirtualizationOutput;
import net.sf.jasperreports.engine.virtualization.VirtualizationSerializable;
/**
* Virtual data type used by report pages to virtualize elements.
*
* @author Lucian Chirita ([email protected])
*/
public class VirtualElementsData implements Serializable, VirtualizationSerializable
{
private static final long serialVersionUID = JRConstants.SERIAL_VERSION_UID;
private Map, Map> elementEvaluations;
private List elements;
public VirtualElementsData()
{
}
public VirtualElementsData(List elements)
{
this.elements = elements;
}
public void setElementEvaluations(int fillerId, JREvaluationTime evaluationTime, Map evaluations)
{
if (elementEvaluations == null)
{
elementEvaluations = new HashMap, Map>();
}
elementEvaluations.put(new Pair(fillerId, evaluationTime), evaluations);
}
public Map getElementEvaluations(int fillerId, JREvaluationTime evaluationTime)
{
return elementEvaluations == null ? null : elementEvaluations.get(
new Pair(fillerId, evaluationTime));
}
public List getElements()
{
return elements;
}
@Override
public void writeVirtualized(VirtualizationOutput out) throws IOException
{
boolean hasEvaluations = elementEvaluations != null && !elementEvaluations.isEmpty();
if (hasEvaluations)
{
out.writeIntCompressed(elementEvaluations.size());
for (Entry, Map> entry : elementEvaluations.entrySet())
{
Pair key = entry.getKey();
out.writeIntCompressed(key.first());
out.writeJRObject(key.second());
Map evaluations = entry.getValue();
if (evaluations == null || evaluations.isEmpty())
{
out.writeIntCompressed(0);
}
else
{
out.writeIntCompressed(evaluations.size());
for (Entry evaluationEntry : evaluations.entrySet())
{
JRPrintElement element = evaluationEntry.getKey();
// print elements do not track references by default, forcing
out.writeJRObject(element, true, true);
out.writeIntCompressed(evaluationEntry.getValue());
}
}
}
}
else
{
out.writeIntCompressed(0);
}
out.writeIntCompressed(elements.size());
for (JRPrintElement element : elements)
{
if (hasEvaluations)
{
// looking up references to elements written as part of elementEvaluations
//FIXME find a solution that doesn't require reference lookup
out.writeJRObject(element, true, false);
}
else
{
out.writeJRObject(element);
}
}
}
@Override
public void readVirtualized(VirtualizationInput in) throws IOException
{
int evaluationsCount = in.readIntCompressed();
boolean hasEvaluations = evaluationsCount > 0;
if (hasEvaluations)
{
elementEvaluations = new HashMap, Map>(
evaluationsCount * 4 / 3 + 1, .75f);
for (int i = 0; i < evaluationsCount; i++)
{
int fillerId = in.readIntCompressed();
JREvaluationTime evalTime = (JREvaluationTime) in.readJRObject();
int count = in.readIntCompressed();
Map evaluations;
if (count == 0)
{
evaluations = null;
}
else
{
evaluations = new HashMap(count * 4 / 3 + 1, .75f);//FIXME use LinkedHashMap?
for (int j = 0; j < count; j++)
{
// these elements are references in the elements list, storing references
JRPrintElement element = (JRPrintElement) in.readJRObject(true);
int value = in.readIntCompressed();
evaluations.put(element, value);
}
}
elementEvaluations.put(new Pair(fillerId, evalTime), evaluations);
}
}
int size = in.readIntCompressed();
elements = new ArrayList(size);
for (int i = 0; i < size; i++)
{
JRPrintElement element = (JRPrintElement) in.readJRObject();
elements.add(element);
}
}
public VirtualElementsData copy()
{
ArrayList elementsCopy = new ArrayList<>(elements);
VirtualElementsData copy = new VirtualElementsData(elementsCopy);
if (elementEvaluations != null)
{
for (Entry, Map> entry : elementEvaluations.entrySet())
{
Pair key = entry.getKey();
Map evals = entry.getValue();
LinkedHashMap evalsClone = new LinkedHashMap<>(evals);
copy.setElementEvaluations(key.first(), key.second(), evalsClone);
}
}
return copy;
}
}