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.schema;
  
  import org.apache.calcite.DataContext;
  import org.apache.calcite.linq4j.Enumerable;
  import org.apache.calcite.rex.RexNode;
  
  import org.checkerframework.checker.nullness.qual.Nullable;
  
  import java.util.List;
  
  /**
   * Table that can be scanned, optionally applying supplied filter expressions,
   * without creating an intermediate relational expression.
   *
   * @see ScannableTable
   */
  public interface FilterableTable extends Table {
    /** Returns an enumerator over the rows in this Table. Each row is represented
     * as an array of its column values.
     *
     * <p>The list of filters is mutable.
     * If the table can implement a particular filter, it should remove that
     * filter from the list.
     * If it cannot implement a filter, it should leave it in the list.
     * Any filters remaining will be implemented by the consuming Calcite
     * operator. */
    Enumerable<@Nullable Object[]> scan(DataContext root, List<RexNode> filters);
  }
  