time_multipliers_input.c File Reference

#include "c_common/time_multipliers_input.h"
#include "c_types/column_info_t.h"
#include "c_types/time_multipliers_t.h"
#include "c_common/get_check_data.h"

Include dependency graph for time_multipliers_input.c:

Go to the source code of this file.

Functions
static void	fetch_raw (HeapTuple *tuple, TupleDesc *tupdesc, Column_info_t info[2], Time_multipliers_t *row)
static void	fetch_timestamps (HeapTuple *tuple, TupleDesc *tupdesc, Column_info_t info[2], Time_multipliers_t *row)
void	get_timeMultipliers (char *sql, Time_multipliers_t **rows, size_t *total_rows)
	Get the time multipliers using interval. More...
void	get_timeMultipliers_raw (char *sql, Time_multipliers_t **rows, size_t *total_rows)
	Get the time multipliers using bigint. More...
static void	get_timeMultipliersGeneral (char *sql, Column_info_t *info, const int kind, Time_multipliers_t **rows, size_t *total_rows)
	param [in] sql multipliers SQL param [in,out] rows catptured information param [in,out] total_rows total information captured More...

Function Documentation

fetch_raw()

static void fetch_raw ( HeapTuple *  tuple, TupleDesc *  tupdesc, Column_info_t  info[2], Time_multipliers_t *  row  )

static

Definition at line 41 of file time_multipliers_input.c.

                             {
  row->start_time = get_TTimestamp_plain(tuple, tupdesc, info[0], 0);
  row->multiplier = spi_getFloat8(tuple, tupdesc,  info[1]);
}

References get_TTimestamp_plain(), Time_multipliers_t::multiplier, spi_getFloat8(), and Time_multipliers_t::start_time.

Referenced by get_timeMultipliersGeneral().

fetch_timestamps()

static void fetch_timestamps ( HeapTuple *  tuple, TupleDesc *  tupdesc, Column_info_t  info[2], Time_multipliers_t *  row  )

static

Definition at line 51 of file time_multipliers_input.c.

                             {
  row->start_time = get_TTimestamp(tuple, tupdesc, info[0], 0);
  row->multiplier = spi_getFloat8(tuple, tupdesc,  info[1]);
}

References get_TTimestamp(), Time_multipliers_t::multiplier, spi_getFloat8(), and Time_multipliers_t::start_time.

Referenced by get_timeMultipliersGeneral().

get_timeMultipliers()

void get_timeMultipliers	(	char *	sql,
		Time_multipliers_t **	rows,
		size_t *	total_rows
	)

Get the time multipliers using interval.

Parameters

[in]	sql	query that has the following columns: start_time, multiplier
[out]	rows	C Container that holds all the multipliers rows
[out]	total_rows	Total rows recieved

Definition at line 149 of file time_multipliers_input.c.

                        {
  Column_info_t info[2];
 
  int i;
  for (i = 0; i < 2; ++i) {
    info[i].colNumber = -1;
    info[i].type = 0;
    info[i].strict = true;
    info[i].eType = ANY_NUMERICAL;
  }
  info[0].name = "start_time";
  info[1].name = "multiplier";
 
  info[0].eType = TIMESTAMP;
 
  get_timeMultipliersGeneral(sql, info, 0, rows, total_rows);
}

References ANY_NUMERICAL, Column_info_t::colNumber, Column_info_t::eType, get_timeMultipliersGeneral(), Column_info_t::name, Column_info_t::strict, TIMESTAMP, and Column_info_t::type.

Referenced by process().

get_timeMultipliers_raw()

void get_timeMultipliers_raw	(	char *	sql,
		Time_multipliers_t **	rows,
		size_t *	total_rows
	)

Get the time multipliers using bigint.

Parameters

[in]	sql	query that has the following columns: start_time, multiplier
[out]	rows	C Container that holds all the multipliers
[out]	total_rows	Total rows recieved

Definition at line 175 of file time_multipliers_input.c.

                        {
  Column_info_t info[2];
 
  int i;
  for (i = 0; i < 2; ++i) {
    info[i].colNumber = -1;
    info[i].type = 0;
    info[i].strict = true;
    info[i].eType = ANY_NUMERICAL;
  }
  info[0].name = "start_value";
  info[1].name = "multiplier";
 
  info[0].eType = ANY_INTEGER;
 
  get_timeMultipliersGeneral(sql, info, 1, rows, total_rows);
}

References ANY_INTEGER, ANY_NUMERICAL, Column_info_t::colNumber, Column_info_t::eType, get_timeMultipliersGeneral(), Column_info_t::name, Column_info_t::strict, and Column_info_t::type.

Referenced by process().

get_timeMultipliersGeneral()

static void get_timeMultipliersGeneral ( char *  sql, Column_info_t *  info, const int  kind, Time_multipliers_t **  rows, size_t *  total_rows  )

static

param [in] sql multipliers SQL param [in,out] rows catptured information param [in,out] total_rows total information captured

Definition at line 66 of file time_multipliers_input.c.

                        {
#ifdef PROFILE
  clock_t start_t = clock();
  PGR_DBG("%s", sql);
#endif
  const int tuple_limit = 1000000;
  size_t total_tuples = 0;
  const int column_count = 2;
 
  void *SPIplan;
  SPIplan = pgr_SPI_prepare(sql);
 
  Portal SPIportal;
  SPIportal = pgr_SPI_cursor_open(SPIplan);
 
 
  bool moredata = true;
  (*total_rows) = total_tuples;
 
  while (moredata == true) {
    SPI_cursor_fetch(SPIportal, true, tuple_limit);
    if (total_tuples == 0)
      pgr_fetch_column_info(info, column_count);
 
    size_t ntuples = SPI_processed;
    total_tuples += ntuples;
 
    if (ntuples > 0) {
      if ((*rows) == NULL)
        (*rows) = (Time_multipliers_t *)palloc0(
            total_tuples * sizeof(Time_multipliers_t));
      else
        (*rows) = (Time_multipliers_t *)repalloc(
            (*rows), total_tuples * sizeof(Time_multipliers_t));
 
      if ((*rows) == NULL) {
        elog(ERROR, "Out of memory");
      }
 
      SPITupleTable *tuptable = SPI_tuptable;
      TupleDesc tupdesc = SPI_tuptable->tupdesc;
 
      for (size_t t = 0; t < ntuples; t++) {
        HeapTuple tuple = tuptable->vals[t];
        switch (kind) {
          case 0 : fetch_timestamps(&tuple, &tupdesc, info,
                       &(*rows)[total_tuples - ntuples + t]);
                   break;
          case 1 : fetch_raw(&tuple, &tupdesc, info,
                       &(*rows)[total_tuples - ntuples + t]);
                   break;
        }
      }
      SPI_freetuptable(tuptable);
    } else {
      moredata = false;
    }
  }
 
  SPI_cursor_close(SPIportal);
 
 
  if (total_tuples == 0) {
    (*total_rows) = 0;
    return;
  }
 
  (*total_rows) = total_tuples;
#ifdef PROFILE
  time_msg("reading time dependant multipliers", start_t, clock());
#endif
}

References fetch_raw(), fetch_timestamps(), PGR_DBG, pgr_fetch_column_info(), pgr_SPI_cursor_open(), pgr_SPI_prepare(), and time_msg().

Referenced by get_timeMultipliers(), and get_timeMultipliers_raw().