anonymous_namespace{WindowContext.cpp}::FindNullRange Struct Reference

Public Member Functions
template<typename T >
IndexPair	find_null_range_int (int8_t const *order_col_buf) const
template<typename COL_TYPE , typename NULL_TYPE = std::conditional_t<sizeof(COL_TYPE) == sizeof(int32_t), int32_t, int64_t>>
IndexPair	find_null_range_fp (int8_t const *order_col_buf) const

Public Attributes
int32_t const *	original_col_idx_buf
int64_t const *	ordered_col_idx_buf
int32_t const	partition_size
int64_t	null_bit_pattern = -1

Detailed Description

Definition at line 777 of file WindowContext.cpp.

Member Function Documentation

template<typename COL_TYPE , typename NULL_TYPE = std::conditional_t<sizeof(COL_TYPE) == sizeof(int32_t), int32_t, int64_t>>

IndexPair anonymous_namespace{WindowContext.cpp}::FindNullRange::find_null_range_fp ( int8_t const *  order_col_buf ) const

inline

Definition at line 818 of file WindowContext.cpp.

                                                                  {
    IndexPair null_range{std::numeric_limits<int64_t>::max(),
                         std::numeric_limits<int64_t>::min()};
    auto const casted_order_col_buf = reinterpret_cast<COL_TYPE const*>(order_col_buf);
    auto check_null_val = [&casted_order_col_buf, this](size_t idx) {
      return *reinterpret_cast<NULL_TYPE const*>(
                 may_alias_ptr(&casted_order_col_buf
                                   [original_col_idx_buf[ordered_col_idx_buf[idx]]])) ==
             null_bit_pattern;
    };
    if (check_null_val(0)) {
      int64_t null_range_max = 1;
      while (null_range_max < partition_size && check_null_val(null_range_max)) {
        null_range_max++;
      }
      null_range.first = 0;
      null_range.second = null_range_max - 1;
    } else if (check_null_val(partition_size - 1)) {
      int64_t null_range_min = partition_size - 2;
      while (null_range_min >= 0 && check_null_val(null_range_min)) {
        null_range_min--;
      }
      null_range.first = null_range_min + 1;
      null_range.second = partition_size - 1;
    }
    return null_range;
  }

template<typename T >

IndexPair anonymous_namespace{WindowContext.cpp}::FindNullRange::find_null_range_int ( int8_t const *  order_col_buf ) const

inline

Definition at line 784 of file WindowContext.cpp.

References heavydb.dtypes::T.

                                                                   {
    IndexPair null_range{std::numeric_limits<int64_t>::max(),
                         std::numeric_limits<int64_t>::min()};
    auto const null_val = inline_int_null_value<T>();
    auto const casted_order_col_buf = reinterpret_cast<T const*>(order_col_buf);
    if (casted_order_col_buf[original_col_idx_buf[ordered_col_idx_buf[0]]] == null_val) {
      int64_t null_range_max = 1;
      while (null_range_max < partition_size &&
             casted_order_col_buf
                     [original_col_idx_buf[ordered_col_idx_buf[null_range_max]]] ==
                 null_val) {
        null_range_max++;
      }
      null_range.first = 0;
      null_range.second = null_range_max - 1;
    } else if (casted_order_col_buf
                   [original_col_idx_buf[ordered_col_idx_buf[partition_size - 1]]] ==
               null_val) {
      int64_t null_range_min = partition_size - 2;
      while (null_range_min >= 0 &&
             casted_order_col_buf
                     [original_col_idx_buf[ordered_col_idx_buf[null_range_min]]] ==
                 null_val) {
        null_range_min--;
      }
      null_range.first = null_range_min + 1;
      null_range.second = partition_size - 1;
    }
    return null_range;
  }

Member Data Documentation

int64_t anonymous_namespace{WindowContext.cpp}::FindNullRange::null_bit_pattern = -1

Definition at line 781 of file WindowContext.cpp.

int64_t const* anonymous_namespace{WindowContext.cpp}::FindNullRange::ordered_col_idx_buf

Definition at line 779 of file WindowContext.cpp.

int32_t const* anonymous_namespace{WindowContext.cpp}::FindNullRange::original_col_idx_buf

Definition at line 778 of file WindowContext.cpp.

int32_t const anonymous_namespace{WindowContext.cpp}::FindNullRange::partition_size

Definition at line 780 of file WindowContext.cpp.

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The documentation for this struct was generated from the following file:

• /home/jenkins-slave/workspace/core-os-doxygen/QueryEngine/WindowContext.cpp