metrics.h

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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.
 */
 
#pragma once
 
 
#include <optional>
#include <unordered_map>
 
#include "iceberg/expression/literal.h"
#include "iceberg/iceberg_export.h"
 
namespace iceberg {
 
struct ICEBERG_EXPORT FieldMetrics {
  int32_t field_id = -1;
 
  int64_t value_count = -1;
 
  int64_t null_value_count = -1;
 
  int64_t nan_value_count = -1;
 
  std::optional<Literal> lower_bound = std::nullopt;
 
  std::optional<Literal> upper_bound = std::nullopt;
};
 
struct ICEBERG_EXPORT Metrics {
  std::optional<int64_t> row_count;
  std::unordered_map<int32_t, int64_t> column_sizes;
  std::unordered_map<int32_t, int64_t> value_counts;
  std::unordered_map<int32_t, int64_t> null_value_counts;
  std::unordered_map<int32_t, int64_t> nan_value_counts;
  std::unordered_map<int32_t, Literal> lower_bounds;
  std::unordered_map<int32_t, Literal> upper_bounds;
};
 
}  // namespace iceberg