net.sf.jasperreports.data.cache.BooleanValues Maven / Gradle / Ivy
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2018 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.data.cache;
import java.io.IOException;
import java.io.Serializable;
import net.sf.jasperreports.engine.JRConstants;
/**
* @author Lucian Chirita ([email protected])
*/
public class BooleanValues implements ColumnValues, Serializable
{
private static final long serialVersionUID = JRConstants.SERIAL_VERSION_UID;
private int size;
private ColumnValues longValues;
public BooleanValues(int size, ColumnValues longValues)
{
this.size = size;
this.longValues = longValues;
}
private void writeObject(java.io.ObjectOutputStream out) throws IOException
{
out.writeInt(size);
out.writeUnshared(longValues);
}
private void readObject(java.io.ObjectInputStream in) throws IOException, ClassNotFoundException
{
size = in.readInt();
longValues = (ColumnValues) in.readUnshared();
}
@Override
public int size()
{
return size;
}
@Override
public ColumnValuesIterator iterator()
{
return new BooleanIterator();
}
protected class BooleanIterator implements ColumnValuesIterator
{
private final ColumnValuesIterator longIterator;
private int index;
private long currentLong;
public BooleanIterator()
{
longIterator = longValues.iterator();
index = -1;
currentLong = 0;
}
@Override
public void moveFirst()
{
longIterator.moveFirst();
index = -1;
currentLong = 0;
}
@Override
public boolean next()
{
if (index + 1 >= size)
{
return false;
}
++index;
if ((index & 0x3F) == 0)
{
if (!longIterator.next())
{
throw new IllegalStateException();
}
currentLong = ((Number) longIterator.get()).longValue();
}
return true;
}
@Override
public Object get()
{
return (currentLong & (1L << index)) != 0;
}
}
}