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.adapter.os;
  
  import org.apache.calcite.config.CalciteConnectionConfig;
  import org.apache.calcite.schema.ScannableTable;
  import org.apache.calcite.schema.Schema;
  import org.apache.calcite.schema.Statistic;
  import org.apache.calcite.schema.Statistics;
  import org.apache.calcite.sql.SqlCall;
  import org.apache.calcite.sql.SqlNode;
  import org.apache.calcite.util.ImmutableBitSet;
  
  import com.google.common.collect.ImmutableList;
  
  import org.checkerframework.checker.nullness.qual.Nullable;
  
  /**
   * Abstract base class for implementations of OS table functions.
   */
  abstract class AbstractBaseScannableTable implements ScannableTable {
    protected AbstractBaseScannableTable() {
    }
  
    @Override public Statistic getStatistic() {
      return Statistics.of(1000d, ImmutableList.of(ImmutableBitSet.of(1)));
    }
  
    @Override public Schema.TableType getJdbcTableType() {
      return Schema.TableType.TABLE;
    }
  
    @Override public boolean isRolledUp(String column) {
      return false;
    }
  
    @Override public boolean rolledUpColumnValidInsideAgg(String column, SqlCall call,
        @Nullable SqlNode parent, @Nullable CalciteConnectionConfig config) {
      return true;
    }
  }
  