/*
* XXL: The eXtensible and fleXible Library for data processing
*
* Copyright (C) 2000-2014 Prof. Dr. Bernhard Seeger Head of the Database Research Group Department
* of Mathematics and Computer Science University of Marburg Germany
*
* This library 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.
*
* This library 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 this library;
* If not, see <http://www.gnu.org/licenses/>.
*
* http://code.google.com/p/xxl/
*/
package xxl.core.io.converters.meta;
import xxl.core.functions.Function;
import xxl.core.indexStructures.builder.BPlusTree.BPlusTreeBuilder;
import xxl.core.io.converters.MeasuredConverter;
/**
* Abstract base class for type specific function collection used in {@link BPlusTreeBuilder} and
* other index structures builders.
*
* @author Marcus Pinnecke (pinnecke@mathematik.uni-marburg.de)
*
*/
public abstract class KeyFunctionFactory {
/**
* @return The MeasuredConverter built up with the given information
*/
public abstract MeasuredConverter getKeyConverter();
/**
* @return The key function built up with the given information
*/
public abstract Function getKeyFunction();
/**
* @return The KeyRange function built up with the given information
*/
public abstract Function getKeyRangeFunction(int compoundKeyColumnIndex);
/**
* @return The KeyValueSeparator function built up with the given information
*/
public abstract Function getKeyValueSeparatorFunction();
}