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 com.aliyun.odps.table;
  
  import java.io.Serializable;
  
  public interface Session extends Serializable {
  
      /**
       * Returns the id for table session.
       */
      String getId();
  
      /**
       * Returns the table identifier for table session.
       */
      TableIdentifier getTableIdentifier();
  
      /**
       * Returns the type for table session.
       */
      SessionType getType();
  
      /**
       * Returns the status for table session.
       */
      SessionStatus getStatus();
  
      /**
       * A description string of this session
       */
      default String description() {
          return this.getClass().toString();
      }
  
      /**
       * Base interface for all kind of session providers.
       * A session provider is uniquely identified by {@link Class} and {@link #identifier()}.
       */
      interface Provider {
          /**
           * A description string of this session provider,
           */
          String identifier();
      }
  }
  