// 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;

/**

* Filters are stored in rocksdb and are consulted automatically

* by rocksdb to decide whether or not to read some

* information from disk. In many cases, a filter can cut down the

* number of disk seeks form a handful to a single disk seek per

* DB::Get() call.

*/

public abstract class Filter extends RocksObject {

protected Filter(final long nativeHandle) {

super(nativeHandle);

}

/**

* Deletes underlying C++ filter pointer.

*

* Note that this function should be called only after all

* RocksDB instances referencing the filter are closed.

* Otherwise an undefined behavior will occur.

*/

@Override

protected void disposeInternal() {

disposeInternal(nativeHandle_);

}

@Override

protected final native void disposeInternal(final long handle);

}