ResultSetRowIterator Class Reference

#include <ResultSet.h>

Collaboration diagram for ResultSetRowIterator:

Public Types
using	value_type = std::vector< TargetValue >
using	difference_type = std::ptrdiff_t
using	pointer = std::vector< TargetValue > *
using	reference = std::vector< TargetValue > &
using	iterator_category = std::input_iterator_tag

Public Member Functions
bool	operator== (const ResultSetRowIterator &other) const
bool	operator!= (const ResultSetRowIterator &other) const
value_type	operator* () const
ResultSetRowIterator &	operator++ (void)
ResultSetRowIterator	operator++ (int)
size_t	getCurrentRowBufferIndex () const

Private Member Functions
	ResultSetRowIterator (const ResultSet *rs, bool translate_strings, bool decimal_to_double)
	ResultSetRowIterator (const ResultSet *rs)

Private Attributes
const ResultSet *	result_set_
size_t	crt_row_buff_idx_
size_t	global_entry_idx_
bool	global_entry_idx_valid_
size_t	fetched_so_far_
bool	translate_strings_
bool	decimal_to_double_

Friends
class	ResultSet

Detailed Description

Definition at line 94 of file ResultSet.h.

Member Typedef Documentation

using ResultSetRowIterator::difference_type = std::ptrdiff_t

Definition at line 97 of file ResultSet.h.

using ResultSetRowIterator::iterator_category = std::input_iterator_tag

Definition at line 100 of file ResultSet.h.

using ResultSetRowIterator::pointer = std::vector<TargetValue>*

Definition at line 98 of file ResultSet.h.

using ResultSetRowIterator::reference = std::vector<TargetValue>&

Definition at line 99 of file ResultSet.h.

using ResultSetRowIterator::value_type = std::vector<TargetValue>

Definition at line 96 of file ResultSet.h.

Constructor & Destructor Documentation

ResultSetRowIterator::ResultSetRowIterator ( const ResultSet *  rs, bool  translate_strings, bool  decimal_to_double  )

inlineprivate

Definition at line 132 of file ResultSet.h.

      : result_set_(rs)
      , crt_row_buff_idx_(0)
      , global_entry_idx_(0)
      , global_entry_idx_valid_(false)
      , fetched_so_far_(0)
      , translate_strings_(translate_strings)
      , decimal_to_double_(decimal_to_double){};

ResultSetRowIterator::ResultSetRowIterator ( const ResultSet *  rs )

inlineprivate

Definition at line 143 of file ResultSet.h.

: ResultSetRowIterator(rs, false, false){};

Member Function Documentation

size_t ResultSetRowIterator::getCurrentRowBufferIndex ( ) const

inline

Definition at line 116 of file ResultSet.h.

References crt_row_buff_idx_.

                                          {
    if (crt_row_buff_idx_ == 0) {
      throw std::runtime_error("current row buffer iteration index is undefined");
    }
    return crt_row_buff_idx_ - 1;
  }

bool ResultSetRowIterator::operator!= ( const ResultSetRowIterator &  other ) const

inline

Definition at line 106 of file ResultSet.h.

{ return !(*this == other); }

ResultSetRowIterator::value_type ResultSetRowIterator::operator* ( ) const

inline

Definition at line 1008 of file ResultSet.h.

References decimal_to_double_, global_entry_idx_, global_entry_idx_valid_, result_set_, and translate_strings_.

                                                                     {
  if (!global_entry_idx_valid_) {
    return {};
  }

  if (result_set_->just_explain_) {
    return {result_set_->explanation_};
  }

  return result_set_->getRowAt(
      global_entry_idx_, translate_strings_, decimal_to_double_, false);
}

ResultSetRowIterator & ResultSetRowIterator::operator++ ( void  )

inline

Definition at line 1021 of file ResultSet.h.

References fetched_so_far_, global_entry_idx_valid_, and result_set_.

                                                                  {
  if (!result_set_->storage_ && !result_set_->just_explain_) {
    global_entry_idx_valid_ = false;
  } else if (result_set_->just_explain_) {
    global_entry_idx_valid_ = 0 == fetched_so_far_;
    fetched_so_far_ = 1;
  } else {
    result_set_->advanceCursorToNextEntry(*this);
  }
  return *this;
}

ResultSetRowIterator ResultSetRowIterator::operator++ ( int  )

inline

Definition at line 110 of file ResultSet.h.

                                       {
    ResultSetRowIterator iter(*this);
    ++(*this);
    return iter;
  }

bool ResultSetRowIterator::operator== ( const ResultSetRowIterator &  other ) const

inline

Definition at line 102 of file ResultSet.h.

References crt_row_buff_idx_, and result_set_.

                                                           {
    return result_set_ == other.result_set_ &&
           crt_row_buff_idx_ == other.crt_row_buff_idx_;
  }

Friends And Related Function Documentation

friend class ResultSet

friend

Definition at line 143 of file ResultSet.h.

Member Data Documentation

size_t ResultSetRowIterator::crt_row_buff_idx_

private

Definition at line 125 of file ResultSet.h.

Referenced by getCurrentRowBufferIndex(), and operator==().

bool ResultSetRowIterator::decimal_to_double_

private

Definition at line 130 of file ResultSet.h.

Referenced by operator*().

size_t ResultSetRowIterator::fetched_so_far_

private

Definition at line 128 of file ResultSet.h.

Referenced by operator++().

size_t ResultSetRowIterator::global_entry_idx_

private

Definition at line 126 of file ResultSet.h.

Referenced by operator*().

bool ResultSetRowIterator::global_entry_idx_valid_

private

Definition at line 127 of file ResultSet.h.

Referenced by operator*(), and operator++().

const ResultSet* ResultSetRowIterator::result_set_

private

Definition at line 124 of file ResultSet.h.

Referenced by operator*(), operator++(), and operator==().

bool ResultSetRowIterator::translate_strings_

private

Definition at line 129 of file ResultSet.h.

Referenced by operator*().

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

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