net.sf.jasperreports.engine.fill.StoreVirtualizer Maven / Gradle / Ivy
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2014 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.io.IOException;
import net.sf.jasperreports.engine.JRVirtualizable;
/**
* @author Lucian Chirita ([email protected])
*/
public class StoreVirtualizer extends JRAbstractLRUVirtualizer
{
private final VirtualizerStore store;
public StoreVirtualizer(int maxSize, VirtualizerStore store)
{
super(maxSize);
this.store = store;
}
protected void pageOut(JRVirtualizable o) throws IOException
{
boolean stored = store.store(o, serializer);
if (!stored && !isReadOnly(o))
{
throw new IllegalStateException("Cannot virtualize data because the data for object UID \"" + o.getUID() + "\" already exists.");
}
}
protected void pageIn(JRVirtualizable o) throws IOException
{
store.retrieve(o, !isReadOnly(o), serializer);
}
protected void dispose(String id)
{
store.remove(id);
}
public void cleanup()
{
store.dispose();
}
}