// kelondroIndex.java
// ------------------
// part of the Kelondro Database
// (C) by Michael Peter Christen; mc@anomic.de
// first published on http://www.anomic.de
// Frankfurt, Germany, 2005
// created: 26.10.2005
//
// 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; either version 2 of the License, or
// (at your option) any later version.
//
// 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
//
// Using this software in any meaning (reading, learning, copying, compiling,
// running) means that you agree that the Author(s) is (are) not responsible
// for cost, loss of data or any harm that may be caused directly or indirectly
// by usage of this softare or this documentation. The usage of this software
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//
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/* A kelondroIndex is a table with indexed access on the first column
   Elements may be selected from the table with logarithmic computation time
   using the get-method. Inserts have also the same computation order and
   can be done with the put-method.
 
   The kelondro Database provides two implementations of this interface:
   kelondroTree and kelondroHashtable
 */

package de.anomic.kelondro;

import java.io.IOException;
import java.util.Iterator;

public interface kelondroIndex {

    public byte[][] get(byte[] key) throws IOException;
    public byte[][] put(byte[][] row) throws IOException;
    public byte[][] remove(byte[] key) throws IOException;
    public Iterator rows(boolean up, boolean rotating) throws IOException; // Objects are of type byte[][]
}