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/*
* 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.drill.exec.physical.base;
import com.fasterxml.jackson.annotation.JsonIgnore;
import org.apache.calcite.rel.RelNode;
import org.apache.calcite.rex.RexNode;
import org.apache.drill.common.expression.SchemaPath;
import org.apache.drill.exec.planner.index.Statistics;
import java.util.List;
/**
* An IndexGroupScan operator represents the scan associated with an Index.
*/
public interface IndexGroupScan extends GroupScan {
/**
* Get the column ordinal of the rowkey column from the output schema of the IndexGroupScan
* @return
*/
@JsonIgnore
public int getRowKeyOrdinal();
/**
* Set the artificial row count after applying the {@link RexNode} condition
* Mainly used for debugging
* @param condition
* @param count
* @param capRowCount
*/
@JsonIgnore
public void setRowCount(RexNode condition, double count, double capRowCount);
/**
* Get the row count after applying the {@link RexNode} condition
* @param condition, filter to apply
* @return row count post filtering
*/
@JsonIgnore
public double getRowCount(RexNode condition, RelNode scanRel);
/**
* Set the statistics for {@link IndexGroupScan}
* @param statistics
*/
@JsonIgnore
public void setStatistics(Statistics statistics);
@JsonIgnore
public void setColumns(List<SchemaPath> columns);
@JsonIgnore
public List<SchemaPath> getColumns();
@JsonIgnore
public void setParallelizationWidth(int width);
}
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