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.planner.type;
  
  import org.apache.calcite.rex.RexNode;
  import org.checkerframework.checker.nullness.qual.Nullable;
  
  public class DataValue {
      private final String alias;
      private final @Nullable RexNode filter;
      // indicate whether the value corresponds to a split path expand, the parentAlias here records
      // the alias
      // associated with the original path expand before the splitting.
      private final @Nullable String parentAlias;
  
      public DataValue(String alias, RexNode filter) {
          this(alias, filter, null);
      }
  
      public DataValue(String alias, RexNode filter, String parentAlias) {
          this.alias = alias;
          this.filter = filter;
          this.parentAlias = parentAlias;
      }
  
      public String getAlias() {
          return alias;
      }
  
      public @Nullable RexNode getFilter() {
          return filter;
      }
  
      public @Nullable String getParentAlias() {
          return parentAlias;
      }
  
      @Override
      public String toString() {
          return "DataValue{" + "alias='" + alias + '\'' + ", filter=" + filter + '}';
      }
  }
  