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 accord.local;
  
  import java.util.function.Function;
  import javax.annotation.Nullable;
  
  import accord.primitives.Participants;
  import accord.primitives.TxnId;
  import accord.utils.MapReduceConsume;
  import accord.utils.async.AsyncChain;
  
  public abstract class MapReduceConsumeCommandStores<P extends Participants<?>, O> extends MapReduceCommandStores<P, O> implements MapReduceConsume<SafeCommandStore, O>
  {
      protected MapReduceConsumeCommandStores(P scope)
      {
          super(scope);
      }
  
      public MapReduceConsumeCommandStores<P, O> overrideWithSynchronousApply(Function<? super CommandStore, AsyncChain<O>> apply)
      {
          return new Delegate<>(this)
          {
              @Override
              AsyncChain<O> applyAsyncInternal(CommandStore commandStore)
              {
                  return apply.apply(commandStore);
              }
  
              @Override
              protected O applyInternal(SafeCommandStore safeStore)
              {
                  throw new IllegalStateException();
              }
          };
      }
  
      public static class Delegate<P extends Participants<?>, O> extends MapReduceConsumeCommandStores<P, O>
      {
          final MapReduceConsumeCommandStores<P, O> delegate;
  
          public Delegate(MapReduceConsumeCommandStores<P, O> delegate)
          {
              super(delegate.scope);
              this.delegate = delegate;
          }
  
          @Override
          protected O applyInternal(SafeCommandStore safeStore)
          {
              return delegate.applyInternal(safeStore);
          }
  
          @Nullable
          @Override
          public TxnId primaryTxnId()
          {
              return delegate.primaryTxnId();
          }
  
          @Override
          public String reason()
          {
              return delegate.reason();
          }
  
          @Override
          public void accept(O result, Throwable failure)
          {
              delegate.accept(result, failure);
          }
  
          @Override
          public O reduce(O o1, O o2)
          {
              return delegate.reduce(o1, o2);
          }
      }
  }
  