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 io.ray.streaming.state.keystate.state.proxy;
  
  import io.ray.streaming.state.KeyValueState;
  import io.ray.streaming.state.backend.AbstractKeyStateBackend;
  import io.ray.streaming.state.keystate.desc.ListStateDescriptor;
  import io.ray.streaming.state.keystate.state.ListState;
  import io.ray.streaming.state.keystate.state.impl.ListStateImpl;
  import io.ray.streaming.state.keystate.state.impl.OperatorStateImpl;
  import io.ray.streaming.state.strategy.StateStoreManagerProxy;
  import java.util.List;
  
  /** This class defines ListState Wrapper, connecting state and backend. */
  public class ListStateStoreManagerProxy<T> extends StateStoreManagerProxy<List<T>>
      implements KeyValueState<String, List<T>> {
  
    private final ListState<T> listState;
  
    public ListStateStoreManagerProxy(
        AbstractKeyStateBackend keyStateBackend, ListStateDescriptor<T> stateDescriptor) {
      super(keyStateBackend, stateDescriptor);
      if (stateDescriptor.isOperatorList()) {
        this.listState = new OperatorStateImpl<>(stateDescriptor, keyStateBackend);
      } else {
        this.listState = new ListStateImpl<>(stateDescriptor, keyStateBackend);
      }
    }
  
    public ListState<T> getListState() {
      return this.listState;
    }
  }
  