org.rocksdb.MemTableConfig Maven / Gradle / Ivy
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
package org.rocksdb;
/**
* MemTableConfig is used to config the internal mem-table of a RocksDB.
* It is required for each memtable to have one such sub-class to allow
* Java developers to use it.
*
* To make a RocksDB to use a specific MemTable format, its associated
* MemTableConfig should be properly set and passed into Options
* via Options.setMemTableFactory() and open the db using that Options.
*
* @see Options
*/
public abstract class MemTableConfig {
/**
* This function should only be called by Options.setMemTableConfig(),
* which will create a c++ shared-pointer to the c++ MemTableRepFactory
* that associated with the Java MemTableConfig.
*
* @see Options#setMemTableConfig(MemTableConfig)
*
* @return native handle address to native memory table instance.
*/
protected abstract long newMemTableFactoryHandle();
}