content: /*
   * Copyright 2020 Alibaba Group Holding Limited.
   *
   * Licensed 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.alibaba.graphscope.common.ir.runtime;
  
  import org.apache.commons.lang3.StringUtils;
  
  public class PhysicalPlan<T> {
      private final T content;
      private final String explain;
  
      public static PhysicalPlan createEmpty() {
          return new PhysicalPlan(null, StringUtils.EMPTY);
      }
  
      public PhysicalPlan(T content, String explain) {
          this.content = content;
          this.explain = explain;
      }
  
      public T getContent() {
          return content;
      }
  
      public String explain() {
          return explain;
      }
  }
  