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 org.apache.calcite.sql.validate;
  
  import org.apache.calcite.sql.SqlCall;
  import org.apache.calcite.sql.SqlNode;
  
  import org.checkerframework.checker.nullness.qual.Nullable;
  
  /**
   * The name-resolution context for expression inside a multiset call. The
   * objects visible are multiset expressions, and those inherited from the parent
   * scope.
   *
   * @see CollectNamespace
   */
  class CollectScope extends ListScope {
    //~ Instance fields --------------------------------------------------------
  
    private final SqlCall node;
  
    //~ Constructors -----------------------------------------------------------
  
    CollectScope(SqlValidatorScope parent,
        @Nullable SqlValidatorScope unusedUsingScope,
        SqlCall node) {
      super(parent);
      this.node = node;
    }
  
    //~ Methods ----------------------------------------------------------------
  
    @Override public SqlNode getNode() {
      return node;
    }
  }
  