CountDistinctDescriptor.h File Reference

Descriptor for the storage layout use for (approximate) count distinct operations. More...

#include "../BufferCompaction.h"
#include "../CompilationOptions.h"
#include "Logger/Logger.h"

Include dependency graph for CountDistinctDescriptor.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Classes
struct	CountDistinctDescriptor

Enumerations
enum	CountDistinctImplType { CountDistinctImplType::Invalid, CountDistinctImplType::Bitmap, CountDistinctImplType::UnorderedSet }

Functions
size_t	bitmap_bits_to_bytes (const size_t bitmap_sz)
bool	operator== (const CountDistinctDescriptor &lhs, const CountDistinctDescriptor &rhs)
bool	operator!= (const CountDistinctDescriptor &lhs, const CountDistinctDescriptor &rhs)

Detailed Description

Descriptor for the storage layout use for (approximate) count distinct operations.

Definition in file CountDistinctDescriptor.h.

Enumeration Type Documentation

enum CountDistinctImplType

strong

Enumerator
Invalid
Bitmap
UnorderedSet

Definition at line 39 of file CountDistinctDescriptor.h.

{ Invalid, Bitmap, UnorderedSet };

Function Documentation

size_t bitmap_bits_to_bytes ( const size_t  bitmap_sz )

inline

Definition at line 31 of file CountDistinctDescriptor.h.

Referenced by CountDistinctDescriptor::bitmapSizeBytes().

                                                           {
  size_t bitmap_byte_sz = bitmap_sz / 8;
  if (bitmap_sz % 8) {
    ++bitmap_byte_sz;
  }
  return bitmap_byte_sz;
}

Here is the caller graph for this function:

bool operator!= ( const CountDistinctDescriptor &  lhs, const CountDistinctDescriptor &  rhs  )

inline

Definition at line 77 of file CountDistinctDescriptor.h.

                                                           {
  return !(lhs == rhs);
}

bool operator== ( const CountDistinctDescriptor &  lhs, const CountDistinctDescriptor &  rhs  )

inline

Definition at line 70 of file CountDistinctDescriptor.h.

References CountDistinctDescriptor::approximate, CountDistinctDescriptor::bitmap_sz_bits, CountDistinctDescriptor::device_type, CountDistinctDescriptor::impl_type_, and CountDistinctDescriptor::min_val.

                                                           {
  return lhs.impl_type_ == rhs.impl_type_ && lhs.min_val == rhs.min_val &&
         lhs.bitmap_sz_bits == rhs.bitmap_sz_bits && lhs.approximate == rhs.approximate &&
         lhs.device_type == rhs.device_type;
}