OverlapsKeyHandler Struct Reference

#include <HashJoinKeyHandlers.h>

Collaboration diagram for OverlapsKeyHandler:

Public Member Functions
	OverlapsKeyHandler (const size_t key_dims_count, const JoinColumn *join_column, const double *bucket_sizes_for_dimension)
template<typename T , typename KEY_BUFF_HANDLER >
DEVICE int	operator() (const size_t i, T *key_scratch_buff, KEY_BUFF_HANDLER f) const

Public Attributes
const size_t	key_dims_count_
const JoinColumn *	join_column_
const double *	bucket_sizes_for_dimension_

Detailed Description

Definition at line 143 of file HashJoinKeyHandlers.h.

Constructor & Destructor Documentation

OverlapsKeyHandler::OverlapsKeyHandler ( const size_t  key_dims_count, const JoinColumn *  join_column, const double *  bucket_sizes_for_dimension  )

inline

Definition at line 144 of file HashJoinKeyHandlers.h.

      : key_dims_count_(key_dims_count)
      , join_column_(join_column)
      , bucket_sizes_for_dimension_(bucket_sizes_for_dimension) {}

Member Function Documentation

template<typename T , typename KEY_BUFF_HANDLER >

DEVICE int OverlapsKeyHandler::operator() ( const size_t  i, T *  key_scratch_buff, KEY_BUFF_HANDLER  f  ) const

inline

Definition at line 152 of file HashJoinKeyHandlers.h.

References bucket_sizes_for_dimension_, JoinColumn::col_buff, fixed_width_double_decode_noinline(), join_column_, key_dims_count_, and SUFFIX.

                                                                                       {
    // TODO(adb): hard-coding the 2D case w/ bounds for now. Should support n-dims with a
    // check to ensure we are not exceeding maximum number of dims for coalesced keys
    double bounds[4];
    for (size_t j = 0; j < 2 * key_dims_count_; j++) {
      bounds[j] = SUFFIX(fixed_width_double_decode_noinline)(join_column_[0].col_buff,
                                                             2 * key_dims_count_ * i + j);
    }

    const auto x_bucket_sz = bucket_sizes_for_dimension_[0];
    const auto y_bucket_sz = bucket_sizes_for_dimension_[1];

    for (int64_t x = floor(bounds[0] * x_bucket_sz); x <= floor(bounds[2] * x_bucket_sz);
         x++) {
      for (int64_t y = floor(bounds[1] * y_bucket_sz);
           y <= floor(bounds[3] * y_bucket_sz);
           y++) {
        key_scratch_buff[0] = x;
        key_scratch_buff[1] = y;

        const auto err = f(i, key_scratch_buff, key_dims_count_);
        if (err) {
          return err;
        }
      }
    }
    return 0;
  }

Here is the call graph for this function:

Member Data Documentation

const double* OverlapsKeyHandler::bucket_sizes_for_dimension_

Definition at line 183 of file HashJoinKeyHandlers.h.

Referenced by operator()().

const JoinColumn* OverlapsKeyHandler::join_column_

Definition at line 182 of file HashJoinKeyHandlers.h.

Referenced by operator()().

const size_t OverlapsKeyHandler::key_dims_count_

Definition at line 181 of file HashJoinKeyHandlers.h.

Referenced by operator()().

---

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

• /home/jenkins-slave/workspace/core-os-doxygen/QueryEngine/HashJoinKeyHandlers.h