#include "postgres.h"
#include "executor/executor.h"
#include "utils/geo_decls.h"

Include dependency graph for funcs_new.c:

Variables
	PG_MODULE_MAGIC

Function Documentation

◆ add_one()

Datum add_one ( PG_FUNCTION_ARGS )

Definition at line 27 of file funcs_new.c.

References add_one_float8(), arg, PG_FUNCTION_INFO_V1(), PG_GETARG_INT32, and PG_RETURN_INT32.

 {
     int32       arg = PG_GETARG_INT32(0);
 
     PG_RETURN_INT32(arg + 1);
 }

◆ add_one_float8()

Datum add_one_float8 ( PG_FUNCTION_ARGS )

Definition at line 39 of file funcs_new.c.

References arg, makepoint(), PG_FUNCTION_INFO_V1(), PG_GETARG_FLOAT8, and PG_RETURN_FLOAT8.

Referenced by add_one().

 {
     /* The macros for FLOAT8 hide its pass-by-reference nature */
     float8      arg = PG_GETARG_FLOAT8(0);
 
     PG_RETURN_FLOAT8(arg + 1.0);
 }

◆ c_overpaid()

Datum c_overpaid ( PG_FUNCTION_ARGS )

Definition at line 113 of file funcs_new.c.

References DatumGetInt32, GetAttributeByName(), PG_GETARG_HEAPTUPLEHEADER, PG_GETARG_INT32, and PG_RETURN_BOOL.

Referenced by concat_text().

 {
     HeapTupleHeader t = PG_GETARG_HEAPTUPLEHEADER(0);
     int32       limit = PG_GETARG_INT32(1);
     bool        isnull;
     int32       salary;
 
     salary = DatumGetInt32(GetAttributeByName(t, "salary", &isnull));
     if (isnull)
         PG_RETURN_BOOL(false);
 
     /*
      * Alternatively, we might prefer to do PG_RETURN_NULL() for null salary
      */
 
     PG_RETURN_BOOL(salary > limit);
 }

◆ concat_text()

Datum concat_text ( PG_FUNCTION_ARGS )

Definition at line 93 of file funcs_new.c.

References c_overpaid(), palloc(), PG_FUNCTION_INFO_V1(), PG_GETARG_TEXT_PP, PG_RETURN_TEXT_P, SET_VARSIZE, VARDATA, VARDATA_ANY, VARHDRSZ, and VARSIZE_ANY_EXHDR.

Referenced by copytext().

 {
     text       *arg1 = PG_GETARG_TEXT_PP(0);
     text       *arg2 = PG_GETARG_TEXT_PP(1);
     int32       arg1_size = VARSIZE_ANY_EXHDR(arg1);
     int32       arg2_size = VARSIZE_ANY_EXHDR(arg2);
     int32       new_text_size = arg1_size + arg2_size + VARHDRSZ;
     text       *new_text = (text *) palloc(new_text_size);
 
     SET_VARSIZE(new_text, new_text_size);
     memcpy(VARDATA(new_text), VARDATA_ANY(arg1), arg1_size);
     memcpy(VARDATA(new_text) + arg1_size, VARDATA_ANY(arg2), arg2_size);
     PG_RETURN_TEXT_P(new_text);
 }

◆ copytext()

Datum copytext ( PG_FUNCTION_ARGS )

Definition at line 67 of file funcs_new.c.

References concat_text(), palloc(), PG_FUNCTION_INFO_V1(), PG_GETARG_TEXT_PP, PG_RETURN_TEXT_P, SET_VARSIZE, VARDATA, VARDATA_ANY, VARHDRSZ, and VARSIZE_ANY_EXHDR.

Referenced by makepoint().

 {
     text       *t = PG_GETARG_TEXT_PP(0);
 
     /*
      * VARSIZE_ANY_EXHDR is the size of the struct in bytes, minus the
      * VARHDRSZ or VARHDRSZ_SHORT of its header.  Construct the copy with a
      * full-length header.
      */
     text       *new_t = (text *) palloc(VARSIZE_ANY_EXHDR(t) + VARHDRSZ);
 
     SET_VARSIZE(new_t, VARSIZE_ANY_EXHDR(t) + VARHDRSZ);
 
     /*
      * VARDATA is a pointer to the data region of the new struct.  The source
      * could be a short datum, so retrieve its data through VARDATA_ANY.
      */
     memcpy((void *) VARDATA(new_t), /* destination */
            (void *) VARDATA_ANY(t), /* source */
            VARSIZE_ANY_EXHDR(t));   /* how many bytes */
     PG_RETURN_TEXT_P(new_t);
 }

◆ makepoint()

Datum makepoint ( PG_FUNCTION_ARGS )

Definition at line 50 of file funcs_new.c.

References copytext(), palloc(), PG_FUNCTION_INFO_V1(), PG_GETARG_POINT_P, PG_RETURN_POINT_P, Point::x, and Point::y.

Referenced by add_one_float8().

 {
     Point      *pointx = PG_GETARG_POINT_P(0);
     Point      *pointy = PG_GETARG_POINT_P(1);
     Point      *new_point = (Point *) palloc(sizeof(Point));
 
     new_point->x = pointx->x;
     new_point->y = pointy->y;
 
     PG_RETURN_POINT_P(new_point);
 }

◆ PG_FUNCTION_INFO_V1() [1/6]

PG_FUNCTION_INFO_V1 ( add_one )

Referenced by add_one(), add_one_float8(), concat_text(), copytext(), and makepoint().

◆ PG_FUNCTION_INFO_V1() [2/6]

PG_FUNCTION_INFO_V1 ( add_one_float8 )

◆ PG_FUNCTION_INFO_V1() [3/6]

PG_FUNCTION_INFO_V1 ( makepoint )

◆ PG_FUNCTION_INFO_V1() [4/6]

PG_FUNCTION_INFO_V1 ( copytext )

◆ PG_FUNCTION_INFO_V1() [5/6]

PG_FUNCTION_INFO_V1 ( concat_text )

◆ PG_FUNCTION_INFO_V1() [6/6]

PG_FUNCTION_INFO_V1 ( c_overpaid )

Variable Documentation

◆ PG_MODULE_MAGIC

PG_MODULE_MAGIC

Definition at line 19 of file funcs_new.c.

Functions
	PG_FUNCTION_INFO_V1 (add_one)

Datum	add_one (PG_FUNCTION_ARGS)

	PG_FUNCTION_INFO_V1 (add_one_float8)

Datum	add_one_float8 (PG_FUNCTION_ARGS)

	PG_FUNCTION_INFO_V1 (makepoint)

Datum	makepoint (PG_FUNCTION_ARGS)

	PG_FUNCTION_INFO_V1 (copytext)

Datum	copytext (PG_FUNCTION_ARGS)

	PG_FUNCTION_INFO_V1 (concat_text)

Datum	concat_text (PG_FUNCTION_ARGS)

	PG_FUNCTION_INFO_V1 (c_overpaid)

Datum	c_overpaid (PG_FUNCTION_ARGS)

Functions

Variables