/*
* Copyright (C) 2006 http://www.chaidb.org
*
* 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.
*
*/
/**
* User: Administrator
* Date: Nov 11, 2003
* Time: 1:06:37 PM
*/
package org.chaidb.db.index;
import org.chaidb.db.index.btree.BTree;
import org.chaidb.db.index.btree.PathBTree;
import org.chaidb.db.index.btree.hbt.HyperBTree;
/**
* BTreeFactory is the factory class to get BTree instance.
*/
public class BTreeFactory {
/**
* create an instance of BTree.
*
* @param btreeType There are 2 types of BTree
* BTREE - basic btree, one key to one value
* HYPERBTREE - duplicated key, one key to multiple values
* @return an BTree instance which type is specifed by btreeType
*/
public static IDBIndex createBTree(short btreeType) {
switch (btreeType) {
case IBTreeConst.ID2NODE_BTREE:
return new org.chaidb.db.index.btree.Id2nodeBTree();
case IBTreeConst.SUPER_BTREE:
return new org.chaidb.db.index.btree.SuperBTree();
case IBTreeConst.HYPER_BTREE:
return new HyperBTree();
case IBTreeConst.PATH_BTREE:
return new PathBTree();
case IBTreeConst.BTREE:
return new BTree();
default:
return new BTree();
}
}
}