JoinColumnTupleIterator Struct Reference

Iterates over the rows of a JoinColumnTuple across multiple fragments/chunks. More...

#include <JoinColumnIterator.h>

Collaboration diagram for JoinColumnTupleIterator:

Public Member Functions
DEVICE	JoinColumnTupleIterator ()
DEVICE	JoinColumnTupleIterator (size_t num_cols, const JoinColumn *join_column_per_key, const JoinColumnTypeInfo *type_info_per_key, size_t start, size_t step)
DEVICE FORCE_INLINE	operator bool () const
DEVICE FORCE_INLINE JoinColumnTupleIterator &	operator++ ()
DEVICE FORCE_INLINE JoinColumnTupleIterator &	operator* ()

Public Attributes
size_t	num_cols
JoinColumnIterator	join_column_iterators [g_maximum_conditions_to_coalesce]

Detailed Description

Iterates over the rows of a JoinColumnTuple across multiple fragments/chunks.

Definition at line 147 of file JoinColumnIterator.h.

Constructor & Destructor Documentation

DEVICE JoinColumnTupleIterator::JoinColumnTupleIterator ( )

inline

Definition at line 159 of file JoinColumnIterator.h.

: num_cols(0) {}

DEVICE JoinColumnTupleIterator::JoinColumnTupleIterator ( size_t  num_cols, const JoinColumn *  join_column_per_key, const JoinColumnTypeInfo *  type_info_per_key, size_t  start, size_t  step  )

inline

Definition at line 161 of file JoinColumnIterator.h.

References CHECK_LE, g_maximum_conditions_to_coalesce, join_column_iterators, and num_cols.

      : num_cols(num_cols) {
#ifndef __CUDACC__
    CHECK_LE(num_cols, g_maximum_conditions_to_coalesce);
#else
    assert(num_cols <= g_maximum_conditions_to_coalesce);
#endif
    for (size_t i = 0; i < num_cols; ++i) {
      join_column_iterators[i] =
          JoinColumnIterator(&join_column_per_key[i],
                             type_info_per_key ? &type_info_per_key[i] : nullptr,
                             start,
                             step);
    }
  }

Member Function Documentation

DEVICE FORCE_INLINE JoinColumnTupleIterator::operator bool ( ) const

inline

Definition at line 181 of file JoinColumnIterator.h.

References join_column_iterators, and num_cols.

                                            {
    for (size_t i = 0; i < num_cols; ++i) {
      if (join_column_iterators[i]) {
        return true;
        // If any column iterator is still valid, then the tuple is still valid.
      }
    }
    return false;
  }

DEVICE FORCE_INLINE JoinColumnTupleIterator& JoinColumnTupleIterator::operator* ( )

inline

Definition at line 198 of file JoinColumnIterator.h.

{ return *this; }

DEVICE FORCE_INLINE JoinColumnTupleIterator& JoinColumnTupleIterator::operator++ ( void  )

inline

Definition at line 191 of file JoinColumnIterator.h.

References join_column_iterators, and num_cols.

                                                            {
    for (size_t i = 0; i < num_cols; ++i) {
      ++join_column_iterators[i];
    }
    return *this;
  }

Member Data Documentation

JoinColumnIterator JoinColumnTupleIterator::join_column_iterators[g_maximum_conditions_to_coalesce]

Definition at line 152 of file JoinColumnIterator.h.

Referenced by JoinColumnTupleIterator(), operator bool(), and operator++().

size_t JoinColumnTupleIterator::num_cols

Definition at line 151 of file JoinColumnIterator.h.

Referenced by JoinColumnTupleIterator(), operator bool(), and operator++().

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

• /home/jenkins-slave/workspace/core-os-doxygen/QueryEngine/JoinHashTable/Runtime/JoinColumnIterator.h