/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.rocketmq.store.rocksdb;

import org.rocksdb.AbstractCompactionFilter;
import org.rocksdb.Slice;

/**
 * Thin Java wrapper around a native CqCompactionFilter C++ pointer.
 * <p>
 * The native filter is allocated by {@link CqCompactionFilterJni#createNativeFilter0()}
 * and its lifetime is managed externally (it lives for the entire JVM session).
 * {@link #disOwnNativeHandle()} is called so that {@code close()} does not
 * free the native memory — this is critical because {@code AbstractRocksDBStorage}
 * closes {@code ColumnFamilyOptions} (which closes this filter) before closing
 * the DB, while background compaction threads may still reference the filter.
 */
class NativeCqCompactionFilter extends AbstractCompactionFilter<Slice> {

    NativeCqCompactionFilter(long nativeHandle) {
        super(nativeHandle);
        disOwnNativeHandle();
    }
}
