content: /*
   * 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.kafka.streams.state.internals;
  
  import org.apache.kafka.common.utils.Bytes;
  import org.apache.kafka.streams.kstream.Windowed;
  import org.apache.kafka.streams.processor.StateStore;
  import org.apache.kafka.streams.processor.StateStoreContext;
  import org.apache.kafka.streams.query.PositionBound;
  import org.apache.kafka.streams.query.Query;
  import org.apache.kafka.streams.query.QueryConfig;
  import org.apache.kafka.streams.query.QueryResult;
  import org.apache.kafka.streams.state.KeyValueIterator;
  import org.apache.kafka.streams.state.SessionStore;
  
  
  public class RocksDBSessionStore
      extends WrappedStateStore<SegmentedBytesStore, Object, Object>
      implements SessionStore<Bytes, byte[]> {
  
      private StateStoreContext stateStoreContext;
  
      RocksDBSessionStore(final SegmentedBytesStore bytesStore) {
          super(bytesStore);
      }
  
      @Override
      public void init(final StateStoreContext stateStoreContext, final StateStore root) {
          wrapped().init(stateStoreContext, root);
          this.stateStoreContext = stateStoreContext;
      }
  
      @Override
      public <R> QueryResult<R> query(final Query<R> query,
                                      final PositionBound positionBound,
                                      final QueryConfig config) {
  
          return StoreQueryUtils.handleBasicQueries(
              query,
              positionBound,
              config,
              this,
              getPosition(),
              stateStoreContext
          );
      }
  
      @Override
      public KeyValueIterator<Windowed<Bytes>, byte[]> findSessions(final Bytes key,
                                                                    final long earliestSessionEndTime,
                                                                    final long latestSessionStartTime) {
          final KeyValueIterator<Bytes, byte[]> bytesIterator = wrapped().fetch(
              key,
              earliestSessionEndTime,
              latestSessionStartTime
          );
          return new WrappedSessionStoreIterator(bytesIterator);
      }
  
      @Override
      public KeyValueIterator<Windowed<Bytes>, byte[]> backwardFindSessions(final Bytes key,
                                                                            final long earliestSessionEndTime,
                                                                            final long latestSessionStartTime) {
          final KeyValueIterator<Bytes, byte[]> bytesIterator = wrapped().backwardFetch(
              key,
              earliestSessionEndTime,
              latestSessionStartTime
          );
          return new WrappedSessionStoreIterator(bytesIterator);
      }
  
      @Override
      public KeyValueIterator<Windowed<Bytes>, byte[]> findSessions(final Bytes keyFrom,
                                                                    final Bytes keyTo,
                                                                    final long earliestSessionEndTime,
                                                                    final long latestSessionStartTime) {
          final KeyValueIterator<Bytes, byte[]> bytesIterator = wrapped().fetch(
              keyFrom,
              keyTo,
              earliestSessionEndTime,
              latestSessionStartTime
          );
          return new WrappedSessionStoreIterator(bytesIterator);
      }
  
      @Override
      public KeyValueIterator<Windowed<Bytes>, byte[]> backwardFindSessions(final Bytes keyFrom,
                                                                            final Bytes keyTo,
                                                                            final long earliestSessionEndTime,
                                                                            final long latestSessionStartTime) {
          final KeyValueIterator<Bytes, byte[]> bytesIterator = wrapped().backwardFetch(
              keyFrom,
              keyTo,
              earliestSessionEndTime,
              latestSessionStartTime
          );
          return new WrappedSessionStoreIterator(bytesIterator);
      }
  
      @Override
      public byte[] fetchSession(final Bytes key,
                                 final long earliestSessionEndTime,
                                 final long latestSessionStartTime) {
          return wrapped().get(SessionKeySchema.toBinary(
              key,
              earliestSessionEndTime,
              latestSessionStartTime
          ));
      }
  
      @Override
      public KeyValueIterator<Windowed<Bytes>, byte[]> fetch(final Bytes key) {
          return findSessions(key, 0, Long.MAX_VALUE);
      }
  
      @Override
      public KeyValueIterator<Windowed<Bytes>, byte[]> backwardFetch(final Bytes key) {
          return backwardFindSessions(key, 0, Long.MAX_VALUE);
      }
  
      @Override
      public KeyValueIterator<Windowed<Bytes>, byte[]> fetch(final Bytes keyFrom, final Bytes keyTo) {
          return findSessions(keyFrom, keyTo, 0, Long.MAX_VALUE);
      }
  
      @Override
      public KeyValueIterator<Windowed<Bytes>, byte[]> backwardFetch(final Bytes keyFrom, final Bytes keyTo) {
          return backwardFindSessions(keyFrom, keyTo, 0, Long.MAX_VALUE);
      }
  
      @Override
      public void remove(final Windowed<Bytes> key) {
          wrapped().remove(SessionKeySchema.toBinary(key));
      }
  
      @Override
      public void put(final Windowed<Bytes> sessionKey, final byte[] aggregate) {
          wrapped().put(SessionKeySchema.toBinary(sessionKey), aggregate);
      }
  }
  