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.bookkeeper.client.impl;
  
  import io.netty.util.Recycler;
  import io.netty.util.Recycler.Handle;
  import org.apache.bookkeeper.client.api.LastConfirmedAndEntry;
  import org.apache.bookkeeper.client.api.LedgerEntry;
  
  /**
   * This contains LastAddConfirmed entryId and a LedgerEntry wanted to read.
   * It is used for readLastAddConfirmedAndEntry.
   */
  public class LastConfirmedAndEntryImpl implements LastConfirmedAndEntry {
  
      private static final Recycler<LastConfirmedAndEntryImpl> RECYCLER = new Recycler<LastConfirmedAndEntryImpl>() {
          @Override
          protected LastConfirmedAndEntryImpl newObject(Handle<LastConfirmedAndEntryImpl> handle) {
              return new LastConfirmedAndEntryImpl(handle);
          }
      };
  
      public static LastConfirmedAndEntryImpl create(long lac, org.apache.bookkeeper.client.LedgerEntry entry) {
          LastConfirmedAndEntryImpl entryImpl = RECYCLER.get();
          entryImpl.lac = lac;
          if (null == entry) {
              entryImpl.entry = null;
          } else {
              entryImpl.entry = LedgerEntryImpl.create(
                  entry.getLedgerId(),
                  entry.getEntryId(),
                  entry.getLength(),
                  entry.getEntryBuffer());
          }
          return entryImpl;
      }
  
      private final Handle<LastConfirmedAndEntryImpl> recycleHandle;
      private Long lac;
      private LedgerEntry entry;
  
      public LastConfirmedAndEntryImpl(Handle<LastConfirmedAndEntryImpl> handle) {
          this.recycleHandle = handle;
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public long getLastAddConfirmed() {
          return lac;
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public boolean hasEntry() {
          return entry != null;
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public LedgerEntry getEntry() {
          return entry;
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public void close() {
          this.lac = -1L;
          if (null != entry) {
              entry.close();
              entry = null;
          }
          recycleHandle.recycle(this);
      }
  }
  