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.desc;
  
  import com.google.common.base.Preconditions;
  import io.ray.streaming.state.keystate.state.State;
  
  /** This class defines basic data structures of StateDescriptor. */
  public abstract class AbstractStateDescriptor<S extends State, T> {
  
    private final String name;
    private String tableName;
    private Class<T> type;
  
    protected AbstractStateDescriptor(String name, Class<T> type) {
      this.name = name;
      this.type = type;
    }
  
    public String getName() {
      return name;
    }
  
    public Class<T> getType() {
      return type;
    }
  
    protected Class<T> setType(Class<T> type) {
      return type;
    }
  
    public String getTableName() {
      return tableName;
    }
  
    public void setTableName(String tableName) {
      this.tableName = tableName;
    }
  
    public abstract StateType getStateType();
  
    public String getIdentify() {
      Preconditions.checkArgument(this.tableName != null, "table name must not be null.");
      Preconditions.checkArgument(this.name != null, "table name must not be null.");
      return this.name;
    }
  
    @Override
    public String toString() {
      return "AbstractStateDescriptor{"
          + "tableName='"
          + tableName
          + '\''
          + ", name='"
          + name
          + '\''
          + ", type="
          + type
          + '}';
    }
  
    public enum StateType {
      /** value state */
      VALUE,
  
      /** list state */
      LIST,
  
      /** map state */
      MAP
    }
  }
  