net.sf.jasperreports.engine.fill.DefaultPrintElementOriginator Maven / Gradle / Ivy
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2016 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.fill;
import java.util.concurrent.atomic.AtomicInteger;
import net.sf.jasperreports.engine.JRPrintElement;
import net.sf.jasperreports.engine.JRRuntimeException;
/**
* Default {@link PrintElementOriginator} implementation.
*
* @author Lucian Chirita ([email protected])
*/
public class DefaultPrintElementOriginator implements PrintElementOriginator
{
public static final String EXCEPTION_MESSAGE_KEY_MAXIMUM_ELEMENTS_NUMBER_REACHED = "fill.print.element.maximum.elements.number.reached";
private final int sourceElementId;
private final AtomicInteger printIdCounter;
public DefaultPrintElementOriginator(int sourceElementId)
{
this.sourceElementId = sourceElementId;
this.printIdCounter = new AtomicInteger(JRPrintElement.UNSET_PRINT_ELEMENT_ID);
}
@Override
public int getSourceElementId()
{
return sourceElementId;
}
@Override
public int generatePrintElementId()
{
int id = printIdCounter.incrementAndGet();
// testing for overflow; this limits the number of elements to 2^32 - 1
if (id == JRPrintElement.UNSET_PRINT_ELEMENT_ID)
{
throw
new JRRuntimeException(
EXCEPTION_MESSAGE_KEY_MAXIMUM_ELEMENTS_NUMBER_REACHED,
new Object[]{sourceElementId});
}
return id;
}
}