/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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.
*
* Copyright (c) 2009 Pentaho Corporation.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.states;
import org.pentaho.reporting.libraries.base.util.FastStack;
import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
/**
* Todo: Document Me
*
* @author Thomas Morgner
*/
public class DefaultGroupingState implements GroupingState
{
public static final GroupingState EMPTY = new DefaultGroupingState();
private int currentGroup;
private FastStack groupStarts;
protected DefaultGroupingState()
{
this.currentGroup = -1;
this.groupStarts = new FastStack();
}
public DefaultGroupingState(final int currentGroup,
final FastStack groupStarts)
{
this.currentGroup = currentGroup;
this.groupStarts = groupStarts;
}
public int getCurrentGroup()
{
return currentGroup;
}
public int getGroupStartRow(final String group)
{
final int size = groupStarts.size();
for (int i = 0; i < size; i++)
{
final GroupStartRecord o = (GroupStartRecord) groupStarts.get(i);
if (ObjectUtilities.equal(o.getGroupName(), group))
{
return o.getRow();
}
}
return 0;
}
public int getGroupStartRow(final int group)
{
if (group < 0 || group >= groupStarts.size())
{
if (groupStarts.isEmpty())
{
return 0;
}
final GroupStartRecord o = (GroupStartRecord) groupStarts.peek();
return o.getRow();
}
final GroupStartRecord o = (GroupStartRecord) groupStarts.get(group);
return o.getRow();
}
}