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.carbondata.core.index.dev.cgindex;
  
  import java.util.List;
  import java.util.Map;
  
  import org.apache.carbondata.common.annotations.InterfaceAudience;
  import org.apache.carbondata.common.annotations.InterfaceStability;
  import org.apache.carbondata.core.datastore.block.SegmentProperties;
  import org.apache.carbondata.core.index.Segment;
  import org.apache.carbondata.core.index.dev.Index;
  import org.apache.carbondata.core.indexstore.Blocklet;
  import org.apache.carbondata.core.indexstore.PartitionSpec;
  import org.apache.carbondata.core.metadata.schema.table.CarbonTable;
  import org.apache.carbondata.core.scan.expression.Expression;
  import org.apache.carbondata.core.scan.filter.executer.FilterExecutor;
  
  /**
   * Index for Coarse Grain level, see {@link org.apache.carbondata.core.index.IndexLevel#CG}
   */
  @InterfaceAudience.Developer("Index")
  @InterfaceStability.Evolving
  public abstract class CoarseGrainIndex implements Index<Blocklet> {
  
    @Override
    public List<Blocklet> prune(Expression expression, SegmentProperties segmentProperties,
        CarbonTable carbonTable, FilterExecutor filterExecutor) {
      throw new UnsupportedOperationException("Filter expression not supported");
    }
  
    @Override
    public long getRowCount(Segment segment, List<PartitionSpec> partitions) {
      throw new UnsupportedOperationException("Operation not supported");
    }
  
    @Override
    public Map<String, Long> getRowCountForEachBlock(Segment segment, List<PartitionSpec> partitions,
        Map<String, Long> blockletToRowCountMap) {
      throw new UnsupportedOperationException("Operation not supported");
    }
  
    @Override
    public boolean validatePartitionInfo(List<PartitionSpec> partitions) {
      throw new UnsupportedOperationException("Operation not supported");
    }
  
    @Override
    public int getNumberOfEntries() {
      // keep default, one record in one index
      return 1;
    }
  }
  