TargetValueConvertersImpl.h

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/*
 * Copyright 2021 OmniSci, Inc.
 *
 * Licensed 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.
 */

#ifndef TARGET_VALUE_CONVERTERS_IMPL_H_
#define TARGET_VALUE_CONVERTERS_IMPL_H_

#include "Fragmenter/TargetValueConverters.h"
#include "Geospatial/Compression.h"
#include "ImportExport/RenderGroupAnalyzer.h"
#include "Shared/checked_alloc.h"
#include "Shared/enable_assign_render_groups.h"
#include "StringDictionary/StringDictionary.h"

#include <atomic>
#include <future>
#include <thread>

template <typename T>
T get_fixed_array_null_value() {
  if (std::is_floating_point<T>::value) {
    return static_cast<T>(inline_fp_null_array_value<T>());
  } else {
    return static_cast<T>(inline_int_null_array_value<T>());
  }
}

template <typename SOURCE_TYPE, typename RETURN_TYPE, typename CHECKED_CAST_TYPE>
RETURN_TYPE checked_cast(SOURCE_TYPE val, bool check_null, RETURN_TYPE null_value) {
  if (!std::is_same<SOURCE_TYPE, CHECKED_CAST_TYPE>::value) {
    // do an overflow check
    try {
      CHECKED_CAST_TYPE castedVal = boost::numeric_cast<CHECKED_CAST_TYPE>(val);
      if (check_null && castedVal == null_value) {
        throw std::runtime_error("Overflow or underflow");
      }
    } catch (...) {
      throw std::runtime_error("Overflow or underflow");
    }
  }

  return static_cast<RETURN_TYPE>(val);
}

template <typename SOURCE_TYPE, typename TARGET_TYPE>
struct NumericValueConverter : public TargetValueConverter {
  using ColumnDataPtr = std::unique_ptr<TARGET_TYPE, CheckedMallocDeleter<TARGET_TYPE>>;
  using ElementsBufferColumnPtr = ColumnDataPtr;
  using CasterFunc = std::function<TARGET_TYPE(SOURCE_TYPE, bool, TARGET_TYPE)>;

  ColumnDataPtr column_data_;
  TARGET_TYPE null_value_;
  SOURCE_TYPE null_check_value_;
  bool do_null_check_;
  TARGET_TYPE fixed_array_null_value_;
  CasterFunc checked_caster_ = nullptr;

  boost_variant_accessor<SOURCE_TYPE> SOURCE_TYPE_ACCESSOR;

  NumericValueConverter(const ColumnDescriptor* cd,
                        size_t num_rows,
                        TARGET_TYPE nullValue,
                        SOURCE_TYPE nullCheckValue,
                        bool doNullCheck)
      : TargetValueConverter(cd)
      , null_value_(nullValue)
      , null_check_value_(nullCheckValue)
      , do_null_check_(doNullCheck) {
    fixed_array_null_value_ = get_fixed_array_null_value<TARGET_TYPE>();
    if (num_rows) {
      allocateColumnarData(num_rows);
    }
  }

  ~NumericValueConverter() override {}

  void setValueCaster(CasterFunc caster) { checked_caster_ = caster; }

  void populateFixedArrayNullSentinel(size_t num_rows) {
    allocateColumnarData(num_rows);
    CHECK(fixed_array_null_value_ != 0);
    column_data_.get()[0] = fixed_array_null_value_;
  }

  void allocateColumnarData(size_t num_rows) override {
    CHECK(num_rows > 0);
    column_data_ = ColumnDataPtr(
        reinterpret_cast<TARGET_TYPE*>(checked_malloc(num_rows * sizeof(TARGET_TYPE))));
  }

  ElementsBufferColumnPtr allocateColumnarBuffer(size_t num_rows) {
    CHECK(num_rows > 0);
    return ElementsBufferColumnPtr(
        reinterpret_cast<TARGET_TYPE*>(checked_malloc(num_rows * sizeof(TARGET_TYPE))));
  }

  void convertElementToColumnarFormat(
      size_t row,
      typename ElementsBufferColumnPtr::pointer columnData,
      const ScalarTargetValue* scalarValue) {
    auto db_p = checked_get<SOURCE_TYPE>(row, scalarValue, SOURCE_TYPE_ACCESSOR);
    auto val = *db_p;

    if (do_null_check_ && null_check_value_ == val) {
      columnData[row] = null_value_;
    } else {
      if (checked_caster_) {
        columnData[row] = checked_caster_(val, do_null_check_, null_value_);
      } else {
        columnData[row] = static_cast<TARGET_TYPE>(val);
      }
    }
  }

  void convertToColumnarFormat(size_t row, const ScalarTargetValue* scalarValue) {
    convertElementToColumnarFormat(row, column_data_.get(), scalarValue);
  }

  void convertToColumnarFormat(size_t row, const TargetValue* value) override {
    auto scalarValue =
        checked_get<ScalarTargetValue>(row, value, SCALAR_TARGET_VALUE_ACCESSOR);
    convertToColumnarFormat(row, scalarValue);
  }

  void processArrayBuffer(
      std::unique_ptr<std::vector<std::pair<size_t, ElementsBufferColumnPtr>>>&
          array_buffer,
      std::unique_ptr<std::vector<ArrayDatum>>::pointer arrayData) {
    for (size_t row = 0; row < array_buffer->size(); row++) {
      auto& element = (array_buffer->at(row));
      bool is_null = false;
      if (element.second) {
        ColumnDataPtr& data = element.second;
        int8_t* arrayDataPtr = reinterpret_cast<int8_t*>(data.release());
        (*arrayData)[row] =
            ArrayDatum(element.first * sizeof(TARGET_TYPE), arrayDataPtr, is_null);
      }
    }
  }

  void addDataBlocksToInsertData(Fragmenter_Namespace::InsertData& insertData) override {
    DataBlockPtr dataBlock;
    dataBlock.numbersPtr = reinterpret_cast<int8_t*>(column_data_.get());
    insertData.data.push_back(dataBlock);
    insertData.columnIds.push_back(column_descriptor_->columnId);
  }
};

template <typename TARGET_TYPE>
struct DictionaryValueConverter : public NumericValueConverter<int64_t, TARGET_TYPE> {
  using ElementsDataColumnPtr =
      typename NumericValueConverter<int64_t, TARGET_TYPE>::ColumnDataPtr;

  using ElementsBufferColumnPtr = std::unique_ptr<std::vector<int32_t>>;

  ElementsBufferColumnPtr column_buffer_;

  const DictDescriptor* target_dict_desc_;
  const DictDescriptor* source_dict_desc_;

  StringDictionaryProxy* source_dict_proxy_;

  const int32_t buffer_null_sentinal_ = std::numeric_limits<int32_t>::min();

  const StringDictionaryProxy* literals_dict_;

  std::unordered_map<int32_t, int32_t> literals_lookup_;
  bool use_literals_;

  DictionaryValueConverter(const Catalog_Namespace::Catalog& cat,
                           int32_t sourceDictId,
                           const ColumnDescriptor* targetDescriptor,
                           size_t num_rows,
                           TARGET_TYPE nullValue,
                           int64_t nullCheckValue,
                           bool doNullCheck,
                           StringDictionaryProxy* literals_dict,
                           StringDictionaryProxy* source_dict_proxy)
      : NumericValueConverter<int64_t, TARGET_TYPE>(targetDescriptor,
                                                    num_rows,
                                                    nullValue,
                                                    nullCheckValue,
                                                    doNullCheck) {
    literals_dict_ = literals_dict;
    target_dict_desc_ =
        cat.getMetadataForDict(targetDescriptor->columnType.get_comp_param(), true);

    source_dict_desc_ = nullptr;
    source_dict_proxy_ = source_dict_proxy;

    use_literals_ = 0 == sourceDictId;
    if (!use_literals_) {
      source_dict_desc_ = cat.getMetadataForDict(std::abs(sourceDictId), true);
      CHECK(source_dict_desc_);
    } else {
      if (literals_dict) {
        auto const& transient_vecmap = literals_dict->getTransientVector();
        for (unsigned index = 0; index < transient_vecmap.size(); ++index) {
          auto const old_id = StringDictionaryProxy::transientIndexToId(index);
          std::string const& str = *transient_vecmap[index];
          auto const new_id = target_dict_desc_->stringDict->getOrAdd(str);
          literals_lookup_[old_id] = new_id;
        }
      }

      literals_lookup_[buffer_null_sentinal_] = buffer_null_sentinal_;
    }

    CHECK(target_dict_desc_);

    if (num_rows) {
      column_buffer_ = allocateColumnarBuffer(num_rows);
    }
  }

  ~DictionaryValueConverter() override {}

  ElementsBufferColumnPtr allocateColumnarBuffer(size_t num_rows) {
    CHECK(num_rows > 0);
    return std::make_unique<std::vector<int32_t>>(num_rows);
  }

  void convertElementToColumnarFormat(
      size_t row,
      typename ElementsBufferColumnPtr::pointer columnBuffer,
      const ScalarTargetValue* scalarValue) {
    auto db_p = checked_get<int64_t>(row, scalarValue, this->SOURCE_TYPE_ACCESSOR);
    auto val = *db_p;

    if (this->do_null_check_ && this->null_check_value_ == val) {
      (*columnBuffer)[row] = this->buffer_null_sentinal_;
    } else {
      (*columnBuffer)[row] = (int32_t)val;
    }
  }

  void convertToColumnarFormat(size_t row, const ScalarTargetValue* scalarValue) {
    convertElementToColumnarFormat(row, this->column_buffer_.get(), scalarValue);
  }

  void convertToColumnarFormat(size_t row, const TargetValue* value) override {
    auto scalarValue =
        checked_get<ScalarTargetValue>(row, value, this->SCALAR_TARGET_VALUE_ACCESSOR);

    convertToColumnarFormat(row, scalarValue);
  }

  inline int32_t convertTransientStringIdToPermanentId(int32_t& transient_string_id) {
    if (source_dict_proxy_) {
      auto str = source_dict_proxy_->getString(transient_string_id);
      return source_dict_proxy_->getOrAdd(str);
    } else {
      throw std::runtime_error("Unexpected negative source ID");
    }
  }

  typename NumericValueConverter<int64_t, TARGET_TYPE>::ColumnDataPtr processBuffer(
      ElementsBufferColumnPtr buffer) {
    typename NumericValueConverter<int64_t, TARGET_TYPE>::ColumnDataPtr data =
        typename NumericValueConverter<int64_t, TARGET_TYPE>::ColumnDataPtr(
            reinterpret_cast<TARGET_TYPE*>(
                checked_malloc(buffer->size() * sizeof(TARGET_TYPE))));

    std::vector<int32_t>* bufferPtr =
        reinterpret_cast<std::vector<int32_t>*>(buffer.get());
    TARGET_TYPE* columnDataPtr = reinterpret_cast<TARGET_TYPE*>(data.get());
    if (use_literals_) {
      for (size_t i = 0; i < bufferPtr->size(); i++) {
        auto id = literals_lookup_[(*bufferPtr)[i]];
        if (id == buffer_null_sentinal_) {
          columnDataPtr[i] = this->null_value_;
        } else {
          columnDataPtr[i] = static_cast<TARGET_TYPE>(id);
        }
      }
    } else {
      if (source_dict_desc_->dictRef == target_dict_desc_->dictRef) {
        // special case, where source and target dict are the same
        // mostly in update
        for (size_t i = 0; i < bufferPtr->size(); i++) {
          auto src_id = (*bufferPtr)[i];
          if (src_id == buffer_null_sentinal_) {
            columnDataPtr[i] = this->null_value_;
          } else if (src_id < 0) {
            columnDataPtr[i] = convertTransientStringIdToPermanentId(src_id);
          } else {
            columnDataPtr[i] = static_cast<TARGET_TYPE>(src_id);
          }
        }

      } else {
        std::vector<int32_t> dest_ids;
        dest_ids.resize(bufferPtr->size());

        if (source_dict_proxy_) {
          StringDictionary::populate_string_ids(dest_ids,
                                                target_dict_desc_->stringDict.get(),
                                                *bufferPtr,
                                                source_dict_desc_->stringDict.get(),
                                                source_dict_proxy_->getTransientVector());
        } else {
          StringDictionary::populate_string_ids(dest_ids,
                                                target_dict_desc_->stringDict.get(),
                                                *bufferPtr,
                                                source_dict_desc_->stringDict.get());
        }

        // fixup NULL sentinel
        for (size_t i = 0; i < dest_ids.size(); i++) {
          auto id = dest_ids[i];
          if (id == buffer_null_sentinal_) {
            columnDataPtr[i] = this->null_value_;
          } else {
            if (std::is_signed<TARGET_TYPE>::value) {
              if (id < 0) {
                throw std::runtime_error(
                    "Maximum number of unique strings (" +
                    std::to_string(std::numeric_limits<TARGET_TYPE>::max()) +
                    ") reached in target dictionary");
              }
            } else {
              if (id >= std::numeric_limits<TARGET_TYPE>::max()) {
                throw std::runtime_error(
                    "Maximum number of unique strings (" +
                    std::to_string(std::numeric_limits<TARGET_TYPE>::max()) +
                    ") reached in target column's dict encoding");
              }
            }
            columnDataPtr[i] = static_cast<TARGET_TYPE>(id);
          }
        }
      }
    }

    return data;
  }

  void processArrayBuffer(
      std::unique_ptr<std::vector<std::pair<size_t, ElementsBufferColumnPtr>>>&
          array_buffer,
      std::unique_ptr<std::vector<ArrayDatum>>::pointer arrayData) {
    if (use_literals_) {
      for (size_t row = 0; row < array_buffer->size(); row++) {
        auto& element = (array_buffer->at(row));
        bool is_null = false;
        if (element.second) {
          typename NumericValueConverter<int64_t, TARGET_TYPE>::ColumnDataPtr data =
              processBuffer(std::move(element.second));
          int8_t* arrayDataPtr = reinterpret_cast<int8_t*>(data.release());
          (*arrayData)[row] =
              ArrayDatum(element.first * sizeof(TARGET_TYPE), arrayDataPtr, is_null);
        }
      }
    } else {
      std::vector<std::vector<int32_t>> srcArrayIds(array_buffer->size());
      std::vector<std::vector<int32_t>> destArrayIds(0);

      for (size_t row = 0; row < array_buffer->size(); row++) {
        auto& element = (array_buffer->at(row));
        if (element.second) {
          srcArrayIds[row] = *(element.second.get());
        }
      }

      StringDictionary::populate_string_array_ids(destArrayIds,
                                                  target_dict_desc_->stringDict.get(),
                                                  srcArrayIds,
                                                  source_dict_desc_->stringDict.get());

      for (size_t row = 0; row < array_buffer->size(); row++) {
        auto& element = (array_buffer->at(row));
        bool is_null = false;
        if (element.second) {
          *(element.second.get()) = destArrayIds[row];
          int8_t* arrayDataPtr = reinterpret_cast<int8_t*>(&(element.second->at(0)));
          (*arrayData)[row] = ArrayDatum(element.first * sizeof(TARGET_TYPE),
                                         arrayDataPtr,
                                         is_null,
                                         DoNothingDeleter());
        }
      }
    }
  }

  void finalizeDataBlocksForInsertData() override {
    if (column_buffer_) {
      this->column_data_ = processBuffer(std::move(column_buffer_));
      column_buffer_ = nullptr;
    }
  }

  void addDataBlocksToInsertData(Fragmenter_Namespace::InsertData& insertData) override {
    finalizeDataBlocksForInsertData();
    DataBlockPtr dataBlock;
    dataBlock.numbersPtr = reinterpret_cast<int8_t*>(this->column_data_.get());
    insertData.data.push_back(dataBlock);
    insertData.columnIds.push_back(this->column_descriptor_->columnId);
  }
};

struct StringValueConverter : public TargetValueConverter {
  std::unique_ptr<std::vector<std::string>> column_data_;

  boost_variant_accessor<int64_t> SOURCE_TYPE_ACCESSOR;

  StringDictionary* source_dict_;
  StringDictionaryProxy* literals_source_dict_;
  bool dict_encoded_;

  StringValueConverter(const Catalog_Namespace::Catalog& cat,
                       const ColumnDescriptor* cd,
                       size_t num_rows,
                       bool dictEncoded,
                       int32_t sourceDictId,
                       StringDictionaryProxy* literals_dict)
      : TargetValueConverter(cd) {
    source_dict_ = nullptr;
    literals_source_dict_ = nullptr;
    dict_encoded_ = dictEncoded;
    if (dictEncoded) {
      if (0 != sourceDictId) {
        auto source_dict_desc = cat.getMetadataForDict(std::abs(sourceDictId), true);
        CHECK(source_dict_desc);
        source_dict_ = source_dict_desc->stringDict.get();
        CHECK(source_dict_);
      } else {
        literals_source_dict_ = literals_dict;
      }
    }
    if (num_rows) {
      allocateColumnarData(num_rows);
    }
  }

  ~StringValueConverter() override {}

  void allocateColumnarData(size_t num_rows) override {
    CHECK(num_rows > 0);
    column_data_ = std::make_unique<std::vector<std::string>>(num_rows);
  }

  void convertToColumnarFormatFromDict(size_t row, const TargetValue* value) {
    auto scalarValue =
        checked_get<ScalarTargetValue>(row, value, SCALAR_TARGET_VALUE_ACCESSOR);
    auto db_p = checked_get<int64_t>(row, scalarValue, this->SOURCE_TYPE_ACCESSOR);
    auto val = *db_p;

    if (std::numeric_limits<int32_t>::min() == val) {
      (*column_data_)[row] = std::string("");
    } else {
      if (source_dict_) {
        std::string strVal = source_dict_->getString(val);
        (*column_data_)[row] = strVal;
      } else if (literals_source_dict_) {
        std::string strVal = literals_source_dict_->getString(val);
        (*column_data_)[row] = strVal;
      } else {
        CHECK_EQ(val, inline_int_null_value<int32_t>());
        std::string nullStr = "";
        (*column_data_)[row] = nullStr;
      }
    }
  }

  void convertToColumnarFormatFromString(size_t row, const TargetValue* value) {
    auto scalarValue =
        checked_get<ScalarTargetValue>(row, value, SCALAR_TARGET_VALUE_ACCESSOR);
    auto db_p = checked_get<NullableString>(row, scalarValue, NULLABLE_STRING_ACCESSOR);
    const auto db_str_p = checked_get<std::string>(row, db_p, STRING_ACCESSOR);

    if (nullptr != db_str_p) {
      (*column_data_)[row] = *db_str_p;
    } else {
      (*column_data_)[row] = std::string("");
    }
  }

  void convertToColumnarFormat(size_t row, const TargetValue* value) override {
    if (dict_encoded_) {
      convertToColumnarFormatFromDict(row, value);
    } else {
      convertToColumnarFormatFromString(row, value);
    }
  }

  void addDataBlocksToInsertData(Fragmenter_Namespace::InsertData& insertData) override {
    DataBlockPtr dataBlock;
    dataBlock.stringsPtr = column_data_.get();
    insertData.data.push_back(dataBlock);
    insertData.columnIds.push_back(column_descriptor_->columnId);
  }
};

template <typename ELEMENT_CONVERTER>
struct ArrayValueConverter : public TargetValueConverter {
  std::unique_ptr<
      std::vector<std::pair<size_t, typename ELEMENT_CONVERTER::ElementsBufferColumnPtr>>>
      column_buffer_;
  std::unique_ptr<std::vector<ArrayDatum>> column_data_;
  std::unique_ptr<ELEMENT_CONVERTER> element_converter_;
  SQLTypeInfo element_type_info_;
  bool do_check_null_;
  bool data_finalized_ = false;
  int8_t* fixed_array_null_sentinel_;
  size_t fixed_array_size_;
  size_t fixed_array_elements_count_;

  boost_variant_accessor<ArrayTargetValue> ARRAY_VALUE_ACCESSOR;

  ArrayValueConverter(const ColumnDescriptor* cd,
                      size_t num_rows,
                      std::unique_ptr<ELEMENT_CONVERTER> element_converter,
                      bool do_check_null)
      : TargetValueConverter(cd)
      , element_converter_(std::move(element_converter))
      , element_type_info_(cd->columnType.get_elem_type())
      , do_check_null_(do_check_null) {
    if (num_rows) {
      allocateColumnarData(num_rows);
    }

    if (cd->columnType.get_size() > 0) {
      fixed_array_size_ = cd->columnType.get_size();
      fixed_array_elements_count_ =
          fixed_array_size_ / sizeof(ELEMENT_CONVERTER::fixed_array_null_value_);
      element_converter_->populateFixedArrayNullSentinel(fixed_array_elements_count_);
      fixed_array_null_sentinel_ =
          reinterpret_cast<int8_t*>(element_converter_->column_data_.get());
    } else {
      fixed_array_size_ = 0;
      fixed_array_elements_count_ = 0;
      fixed_array_null_sentinel_ = nullptr;
    }
  }

  ~ArrayValueConverter() override {}

  void allocateColumnarData(size_t num_rows) override {
    CHECK(num_rows > 0);
    column_data_ = std::make_unique<std::vector<ArrayDatum>>(num_rows);
    column_buffer_ = std::make_unique<std::vector<
        std::pair<size_t, typename ELEMENT_CONVERTER::ElementsBufferColumnPtr>>>(
        num_rows);
  }

  void convertToColumnarFormat(size_t row, const TargetValue* value) override {
    const auto arrayValue =
        checked_get<ArrayTargetValue>(row, value, ARRAY_VALUE_ACCESSOR);
    CHECK(arrayValue);
    if (arrayValue->is_initialized()) {
      const auto& vec = arrayValue->get();
      bool is_null = false;

      if (fixed_array_elements_count_) {
        if (fixed_array_elements_count_ != vec.size()) {
          throw std::runtime_error(
              "Incorrect number of array elements for fixed length array column");
        }
      }

      if (vec.size()) {
        typename ELEMENT_CONVERTER::ElementsBufferColumnPtr elementBuffer =
            element_converter_->allocateColumnarBuffer(vec.size());

        int elementIndex = 0;
        for (const auto& scalarValue : vec) {
          element_converter_->convertElementToColumnarFormat(
              elementIndex++, elementBuffer.get(), &scalarValue);
        }

        column_buffer_->at(row) = {vec.size(), std::move(elementBuffer)};

      } else {
        // Empty, not NULL
        (*column_data_)[row] = ArrayDatum(0, nullptr, is_null, DoNothingDeleter());
      }
    } else {
      if (!do_check_null_) {
        throw std::runtime_error("NULL assignment of non null column not allowed");
      }

      bool is_null = true;  // do_check_null_;
      (*column_data_)[row] = ArrayDatum(
          fixed_array_size_, fixed_array_null_sentinel_, is_null, DoNothingDeleter());
      (*column_data_)[row].is_null = is_null;
    }
  }

  void finalizeDataBlocksForInsertData() override {
    if (!data_finalized_) {
      element_converter_->processArrayBuffer(column_buffer_, column_data_.get());
      data_finalized_ = true;
    }
  }

  void addDataBlocksToInsertData(Fragmenter_Namespace::InsertData& insertData) override {
    finalizeDataBlocksForInsertData();
    DataBlockPtr dataBlock;
    dataBlock.arraysPtr = column_data_.get();
    insertData.data.push_back(dataBlock);
    insertData.columnIds.push_back(column_descriptor_->columnId);
  }
};

struct GeoPointValueConverter : public TargetValueConverter {
  const ColumnDescriptor* coords_column_descriptor_;

  std::unique_ptr<std::vector<std::string>> column_data_;
  std::unique_ptr<std::vector<ArrayDatum>> signed_compressed_coords_data_;

  GeoPointValueConverter(const Catalog_Namespace::Catalog& cat,
                         size_t num_rows,
                         const ColumnDescriptor* logicalColumnDescriptor)
      : TargetValueConverter(logicalColumnDescriptor) {
    coords_column_descriptor_ = cat.getMetadataForColumn(
        column_descriptor_->tableId, column_descriptor_->columnId + 1);
    CHECK(coords_column_descriptor_);

    if (num_rows) {
      allocateColumnarData(num_rows);
    }
  }

  ~GeoPointValueConverter() override {}

  void allocateColumnarData(size_t num_rows) override {
    CHECK(num_rows > 0);
    column_data_ = std::make_unique<std::vector<std::string>>(num_rows);
    signed_compressed_coords_data_ = std::make_unique<std::vector<ArrayDatum>>(num_rows);
  }

  boost_variant_accessor<GeoTargetValue> GEO_VALUE_ACCESSOR;
  boost_variant_accessor<GeoPointTargetValue> GEO_POINT_VALUE_ACCESSOR;

  inline ArrayDatum toCompressedCoords(
      const std::shared_ptr<std::vector<double>>& coords) {
    const auto compressed_coords_vector =
        Geospatial::compress_coords(*coords, column_descriptor_->columnType);

    uint8_t* compressed_coords_array = reinterpret_cast<uint8_t*>(
        checked_malloc(sizeof(uint8_t) * compressed_coords_vector.size()));
    memcpy(compressed_coords_array,
           &compressed_coords_vector[0],
           compressed_coords_vector.size());

    return ArrayDatum((int)compressed_coords_vector.size(),
                      reinterpret_cast<int8_t*>(compressed_coords_array),
                      false);
  }

  void convertToColumnarFormat(size_t row, const TargetValue* value) override {
    const auto geoValue = checked_get<GeoTargetValue>(row, value, GEO_VALUE_ACCESSOR);
    CHECK(geoValue);
    if (geoValue->is_initialized()) {
      const auto geo = geoValue->get();
      const auto geoPoint =
          checked_get<GeoPointTargetValue>(row, &geo, GEO_POINT_VALUE_ACCESSOR);
      CHECK(geoPoint);
      (*column_data_)[row] = "";
      (*signed_compressed_coords_data_)[row] = toCompressedCoords(geoPoint->coords);
    } else {
      // NULL point
      (*column_data_)[row] = "";
      auto coords = std::make_shared<std::vector<double>>();
      coords->push_back(NULL_ARRAY_DOUBLE);
      coords->push_back(NULL_DOUBLE);
      auto coords_datum = toCompressedCoords(coords);
      coords_datum.is_null = true;
      (*signed_compressed_coords_data_)[row] = coords_datum;
    }
  }

  void addDataBlocksToInsertData(Fragmenter_Namespace::InsertData& insertData) override {
    DataBlockPtr logical, coords;

    logical.stringsPtr = column_data_.get();
    coords.arraysPtr = signed_compressed_coords_data_.get();

    insertData.data.emplace_back(logical);
    insertData.columnIds.emplace_back(column_descriptor_->columnId);

    insertData.data.emplace_back(coords);
    insertData.columnIds.emplace_back(coords_column_descriptor_->columnId);
  }
};

inline std::vector<double> compute_bounds_of_coords(
    const std::shared_ptr<std::vector<double>>& coords) {
  std::vector<double> bounds(4);
  constexpr auto DOUBLE_MAX = std::numeric_limits<double>::max();
  constexpr auto DOUBLE_MIN = std::numeric_limits<double>::lowest();
  bounds[0] = DOUBLE_MAX;
  bounds[1] = DOUBLE_MAX;
  bounds[2] = DOUBLE_MIN;
  bounds[3] = DOUBLE_MIN;
  auto size_coords = coords->size();

  for (size_t i = 0; i < size_coords; i += 2) {
    double x = (*coords)[i];
    double y = (*coords)[i + 1];

    bounds[0] = std::min(bounds[0], x);
    bounds[1] = std::min(bounds[1], y);
    bounds[2] = std::max(bounds[2], x);
    bounds[3] = std::max(bounds[3], y);
  }
  return bounds;
}

template <typename ELEM_TYPE>
inline ArrayDatum to_array_datum(const std::vector<ELEM_TYPE>& vector) {
  ELEM_TYPE* array =
      reinterpret_cast<ELEM_TYPE*>(checked_malloc(sizeof(ELEM_TYPE) * vector.size()));
  memcpy(array, vector.data(), vector.size() * sizeof(ELEM_TYPE));

  return ArrayDatum(
      (int)(vector.size() * sizeof(ELEM_TYPE)), reinterpret_cast<int8_t*>(array), false);
}

template <typename ELEM_TYPE>
inline ArrayDatum to_array_datum(const std::shared_ptr<std::vector<ELEM_TYPE>>& vector) {
  return to_array_datum(*vector.get());
}

struct GeoLinestringValueConverter : public GeoPointValueConverter {
  const ColumnDescriptor* bounds_column_descriptor_;

  std::unique_ptr<std::vector<ArrayDatum>> bounds_data_;

  GeoLinestringValueConverter(const Catalog_Namespace::Catalog& cat,
                              size_t num_rows,
                              const ColumnDescriptor* logicalColumnDescriptor)
      : GeoPointValueConverter(cat, num_rows, logicalColumnDescriptor) {
    bounds_column_descriptor_ = cat.getMetadataForColumn(
        column_descriptor_->tableId, column_descriptor_->columnId + 2);
    CHECK(bounds_column_descriptor_);

    if (num_rows) {
      allocateColumnarData(num_rows);
    }
  }

  ~GeoLinestringValueConverter() override {}

  void allocateColumnarData(size_t num_rows) override {
    CHECK(num_rows > 0);
    GeoPointValueConverter::allocateColumnarData(num_rows);
    bounds_data_ = std::make_unique<std::vector<ArrayDatum>>(num_rows);
  }

  boost_variant_accessor<GeoLineStringTargetValue> GEO_LINESTRING_VALUE_ACCESSOR;

  void convertToColumnarFormat(size_t row, const TargetValue* value) override {
    const auto geoValue =
        checked_get<GeoTargetValue>(row, value, GEO_TARGET_VALUE_ACCESSOR);
    CHECK(geoValue);
    if (geoValue->is_initialized()) {
      const auto geo = geoValue->get();
      const auto geoLinestring =
          checked_get<GeoLineStringTargetValue>(row, &geo, GEO_LINESTRING_VALUE_ACCESSOR);

      (*column_data_)[row] = "";
      (*signed_compressed_coords_data_)[row] = toCompressedCoords(geoLinestring->coords);
      auto bounds = compute_bounds_of_coords(geoLinestring->coords);
      (*bounds_data_)[row] = to_array_datum(bounds);
    } else {
      // NULL Linestring
      (*column_data_)[row] = "";
      (*signed_compressed_coords_data_)[row] = ArrayDatum(0, nullptr, true);
      std::vector<double> bounds = {
          NULL_ARRAY_DOUBLE, NULL_DOUBLE, NULL_DOUBLE, NULL_DOUBLE};
      auto bounds_datum = to_array_datum(bounds);
      bounds_datum.is_null = true;
      (*bounds_data_)[row] = bounds_datum;
    }
  }

  void addDataBlocksToInsertData(Fragmenter_Namespace::InsertData& insertData) override {
    GeoPointValueConverter::addDataBlocksToInsertData(insertData);

    DataBlockPtr bounds;

    bounds.arraysPtr = bounds_data_.get();

    insertData.data.emplace_back(bounds);
    insertData.columnIds.emplace_back(bounds_column_descriptor_->columnId);
  }
};

struct GeoPolygonRenderGroupManager {
 protected:
  GeoPolygonRenderGroupManager(RenderGroupAnalyzerMap* render_group_analyzer_map,
                               const int column_id)
      : render_group_analyzer_{nullptr} {
    if (render_group_analyzer_map) {
      // NOTE: this is not thread safe
      auto itr = render_group_analyzer_map->try_emplace(column_id).first;
      render_group_analyzer_ = &itr->second;
    }
  }

  import_export::RenderGroupAnalyzer* render_group_analyzer_;
};

struct GeoPolygonValueConverter : public GeoPointValueConverter,
                                  public GeoPolygonRenderGroupManager {
  const ColumnDescriptor* ring_sizes_column_descriptor_;
  const ColumnDescriptor* bounds_column_descriptor_;
  const ColumnDescriptor* render_group_column_descriptor_;

  std::unique_ptr<std::vector<ArrayDatum>> ring_sizes_data_;
  std::unique_ptr<std::vector<ArrayDatum>> bounds_data_;
  std::unique_ptr<int32_t[]> render_group_data_;

  GeoPolygonValueConverter(const Catalog_Namespace::Catalog& cat,
                           size_t num_rows,
                           const ColumnDescriptor* logicalColumnDescriptor,
                           RenderGroupAnalyzerMap* render_group_analyzer_map)
      : GeoPointValueConverter(cat, num_rows, logicalColumnDescriptor)
      , GeoPolygonRenderGroupManager(render_group_analyzer_map,
                                     logicalColumnDescriptor->columnId) {
    ring_sizes_column_descriptor_ = cat.getMetadataForColumn(
        column_descriptor_->tableId, column_descriptor_->columnId + 2);
    CHECK(ring_sizes_column_descriptor_);
    bounds_column_descriptor_ = cat.getMetadataForColumn(
        column_descriptor_->tableId, column_descriptor_->columnId + 3);
    CHECK(bounds_column_descriptor_);
    render_group_column_descriptor_ = cat.getMetadataForColumn(
        column_descriptor_->tableId, column_descriptor_->columnId + 4);
    CHECK(render_group_column_descriptor_);

    if (num_rows) {
      allocateColumnarData(num_rows);
    }
  }

  ~GeoPolygonValueConverter() override {}

  void allocateColumnarData(size_t num_rows) override {
    GeoPointValueConverter::allocateColumnarData(num_rows);
    ring_sizes_data_ = std::make_unique<std::vector<ArrayDatum>>(num_rows);
    bounds_data_ = std::make_unique<std::vector<ArrayDatum>>(num_rows);
    render_group_data_ = std::make_unique<int32_t[]>(num_rows);
  }

  boost_variant_accessor<GeoPolyTargetValue> GEO_POLY_VALUE_ACCESSOR;

  void convertToColumnarFormat(size_t row, const TargetValue* value) override {
    const auto geoValue =
        checked_get<GeoTargetValue>(row, value, GEO_TARGET_VALUE_ACCESSOR);
    CHECK(geoValue);
    if (geoValue->is_initialized()) {
      const auto geo = geoValue->get();
      const auto geoPoly =
          checked_get<GeoPolyTargetValue>(row, &geo, GEO_POLY_VALUE_ACCESSOR);

      (*column_data_)[row] = "";
      (*signed_compressed_coords_data_)[row] = toCompressedCoords(geoPoly->coords);
      (*ring_sizes_data_)[row] = to_array_datum(geoPoly->ring_sizes);
      auto bounds = compute_bounds_of_coords(geoPoly->coords);
      (*bounds_data_)[row] = to_array_datum(bounds);
      if (render_group_analyzer_) {
        render_group_data_[row] =
            render_group_analyzer_->insertBoundsAndReturnRenderGroup(bounds);
      } else {
        render_group_data_[row] = 0;
      }
    } else {
      // NULL Polygon
      (*column_data_)[row] = "";
      (*signed_compressed_coords_data_)[row] = ArrayDatum(0, nullptr, true);
      (*ring_sizes_data_)[row] = ArrayDatum(0, nullptr, true);
      std::vector<double> bounds = {
          NULL_ARRAY_DOUBLE, NULL_DOUBLE, NULL_DOUBLE, NULL_DOUBLE};
      auto bounds_datum = to_array_datum(bounds);
      bounds_datum.is_null = true;
      (*bounds_data_)[row] = bounds_datum;
      render_group_data_[row] = NULL_INT;
    }
  }

  void addDataBlocksToInsertData(Fragmenter_Namespace::InsertData& insertData) override {
    GeoPointValueConverter::addDataBlocksToInsertData(insertData);

    DataBlockPtr ringSizes, bounds, renderGroup;

    ringSizes.arraysPtr = ring_sizes_data_.get();
    bounds.arraysPtr = bounds_data_.get();
    renderGroup.numbersPtr = reinterpret_cast<int8_t*>(render_group_data_.get());

    insertData.data.emplace_back(ringSizes);
    insertData.columnIds.emplace_back(ring_sizes_column_descriptor_->columnId);

    insertData.data.emplace_back(bounds);
    insertData.columnIds.emplace_back(bounds_column_descriptor_->columnId);

    insertData.data.emplace_back(renderGroup);
    insertData.columnIds.emplace_back(render_group_column_descriptor_->columnId);
  }
};

struct GeoMultiPolygonValueConverter : public GeoPointValueConverter,
                                       public GeoPolygonRenderGroupManager {
  const ColumnDescriptor* ring_sizes_column_descriptor_;
  const ColumnDescriptor* ring_sizes_solumn_descriptor_;
  const ColumnDescriptor* bounds_column_descriptor_;
  const ColumnDescriptor* render_group_column_descriptor_;

  std::unique_ptr<std::vector<ArrayDatum>> ring_sizes_data_;
  std::unique_ptr<std::vector<ArrayDatum>> poly_rings_data_;
  std::unique_ptr<std::vector<ArrayDatum>> bounds_data_;
  std::unique_ptr<int32_t[]> render_group_data_;

  GeoMultiPolygonValueConverter(const Catalog_Namespace::Catalog& cat,
                                size_t num_rows,
                                const ColumnDescriptor* logicalColumnDescriptor,
                                RenderGroupAnalyzerMap* render_group_analyzer_map)
      : GeoPointValueConverter(cat, num_rows, logicalColumnDescriptor)
      , GeoPolygonRenderGroupManager(render_group_analyzer_map,
                                     logicalColumnDescriptor->columnId) {
    ring_sizes_column_descriptor_ = cat.getMetadataForColumn(
        column_descriptor_->tableId, column_descriptor_->columnId + 2);
    CHECK(ring_sizes_column_descriptor_);
    ring_sizes_solumn_descriptor_ = cat.getMetadataForColumn(
        column_descriptor_->tableId, column_descriptor_->columnId + 3);
    CHECK(ring_sizes_column_descriptor_);
    bounds_column_descriptor_ = cat.getMetadataForColumn(
        column_descriptor_->tableId, column_descriptor_->columnId + 4);
    CHECK(bounds_column_descriptor_);
    render_group_column_descriptor_ = cat.getMetadataForColumn(
        column_descriptor_->tableId, column_descriptor_->columnId + 5);
    CHECK(render_group_column_descriptor_);

    if (num_rows) {
      allocateColumnarData(num_rows);
    }
  }

  ~GeoMultiPolygonValueConverter() override {}

  void allocateColumnarData(size_t num_rows) override {
    GeoPointValueConverter::allocateColumnarData(num_rows);
    ring_sizes_data_ = std::make_unique<std::vector<ArrayDatum>>(num_rows);
    poly_rings_data_ = std::make_unique<std::vector<ArrayDatum>>(num_rows);
    bounds_data_ = std::make_unique<std::vector<ArrayDatum>>(num_rows);
    render_group_data_ = std::make_unique<int32_t[]>(num_rows);
  }

  boost_variant_accessor<GeoMultiPolyTargetValue> GEO_MULTI_POLY_VALUE_ACCESSOR;

  void convertToColumnarFormat(size_t row, const TargetValue* value) override {
    const auto geoValue =
        checked_get<GeoTargetValue>(row, value, GEO_TARGET_VALUE_ACCESSOR);
    CHECK(geoValue);
    if (geoValue->is_initialized()) {
      const auto geo = geoValue->get();
      const auto geoMultiPoly =
          checked_get<GeoMultiPolyTargetValue>(row, &geo, GEO_MULTI_POLY_VALUE_ACCESSOR);

      (*column_data_)[row] = "";
      (*signed_compressed_coords_data_)[row] = toCompressedCoords(geoMultiPoly->coords);
      (*ring_sizes_data_)[row] = to_array_datum(geoMultiPoly->ring_sizes);
      (*poly_rings_data_)[row] = to_array_datum(geoMultiPoly->poly_rings);
      auto bounds = compute_bounds_of_coords(geoMultiPoly->coords);
      (*bounds_data_)[row] = to_array_datum(bounds);
      if (render_group_analyzer_) {
        render_group_data_[row] =
            render_group_analyzer_->insertBoundsAndReturnRenderGroup(bounds);
      } else {
        render_group_data_[row] = 0;
      }
    } else {
      // NULL MultiPolygon
      (*column_data_)[row] = "";
      (*signed_compressed_coords_data_)[row] = ArrayDatum(0, nullptr, true);
      (*ring_sizes_data_)[row] = ArrayDatum(0, nullptr, true);
      (*poly_rings_data_)[row] = ArrayDatum(0, nullptr, true);
      std::vector<double> bounds = {
          NULL_ARRAY_DOUBLE, NULL_DOUBLE, NULL_DOUBLE, NULL_DOUBLE};
      auto bounds_datum = to_array_datum(bounds);
      bounds_datum.is_null = true;
      (*bounds_data_)[row] = bounds_datum;
      render_group_data_[row] = NULL_INT;
    }
  }

  void addDataBlocksToInsertData(Fragmenter_Namespace::InsertData& insertData) override {
    GeoPointValueConverter::addDataBlocksToInsertData(insertData);

    DataBlockPtr ringSizes, polyRings, bounds, renderGroup;

    ringSizes.arraysPtr = ring_sizes_data_.get();
    polyRings.arraysPtr = poly_rings_data_.get();
    bounds.arraysPtr = bounds_data_.get();
    renderGroup.numbersPtr = reinterpret_cast<int8_t*>(render_group_data_.get());

    insertData.data.emplace_back(ringSizes);
    insertData.columnIds.emplace_back(ring_sizes_column_descriptor_->columnId);

    insertData.data.emplace_back(polyRings);
    insertData.columnIds.emplace_back(ring_sizes_solumn_descriptor_->columnId);

    insertData.data.emplace_back(bounds);
    insertData.columnIds.emplace_back(bounds_column_descriptor_->columnId);

    insertData.data.emplace_back(renderGroup);
    insertData.columnIds.emplace_back(render_group_column_descriptor_->columnId);
  }
};

#endif