/**
Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved.
Contact:
SYSTAP, LLC DBA Blazegraph
2501 Calvert ST NW #106
Washington, DC 20008
licenses@blazegraph.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* Created on May 2nd, 2011
*/
package com.bigdata.btree.data;
/**
* Interface for data access to children of an index node.
*
* @author <a href="mailto:thompsonbry@users.sourceforge.net">Bryan Thompson</a>
*/
public interface IChildData {
/**
* The #of children of this node. Either all children will be nodes or all
* children will be leaves. The #of children of a node MUST be
* <code>{@link IAbstractNodeData#getKeyCount()}+1</code>
*
* @return The #of children of this node.
*/
public int getChildCount();
/**
* Return the persistent addresses of the specified child node.
*
* @param index
* The index of the child in [0:nkeys].
*
* @return The persistent child address -or- zero(0L) if the child is not
* persistent.
*/
public long getChildAddr(int index);
}