PostgreSQL Source Code git master
Macros | Typedefs | Functions | Variables
hstore_plpython.c File Reference
#include "postgres.h"
#include "fmgr.h"
#include "hstore/hstore.h"
#include "plpy_typeio.h"
#include "plpy_util.h"
Include dependency graph for hstore_plpython.c:

Go to the source code of this file.

Macros

#define  PLyObject_AsString   PLyObject_AsString_p
 
#define  PLyUnicode_FromStringAndSize   PLyUnicode_FromStringAndSize_p
 
#define  hstoreUpgrade   hstoreUpgrade_p
 
#define  hstoreUniquePairs   hstoreUniquePairs_p
 
#define  hstorePairs   hstorePairs_p
 
#define  hstoreCheckKeyLen   hstoreCheckKeyLen_p
 
#define  hstoreCheckValLen   hstoreCheckValLen_p
 

Typedefs

typedef char *(*  PLyObject_AsString_t) (PyObject *plrv)
 
typedef PyObject *(*  PLyUnicode_FromStringAndSize_t) (const char *s, Py_ssize_t size)
 
typedef HStore *(*  hstoreUpgrade_t) (Datum orig)
 
typedef int(*  hstoreUniquePairs_t) (Pairs *a, int32 l, int32 *buflen)
 
typedef HStore *(*  hstorePairs_t) (Pairs *pairs, int32 pcount, int32 buflen)
 
typedef size_t(*  hstoreCheckKeyLen_t) (size_t len)
 
typedef size_t(*  hstoreCheckValLen_t) (size_t len)
 

Functions

  PG_MODULE_MAGIC_EXT (.name="hstore_plpython",.version=PG_VERSION)
 
void  _PG_init (void)
 
  PG_FUNCTION_INFO_V1 (hstore_to_plpython)
 
Datum  hstore_to_plpython (PG_FUNCTION_ARGS)
 
  PG_FUNCTION_INFO_V1 (plpython_to_hstore)
 
Datum  plpython_to_hstore (PG_FUNCTION_ARGS)
 

Variables

static PLyObject_AsString_t  PLyObject_AsString_p
 
static PLyUnicode_FromStringAndSize_t  PLyUnicode_FromStringAndSize_p
 
static hstoreUpgrade_t  hstoreUpgrade_p
 
static hstoreUniquePairs_t  hstoreUniquePairs_p
 
static hstorePairs_t  hstorePairs_p
 
static hstoreCheckKeyLen_t  hstoreCheckKeyLen_p
 
static hstoreCheckValLen_t  hstoreCheckValLen_p
 

Macro Definition Documentation

◆ hstoreCheckKeyLen

#define hstoreCheckKeyLen   hstoreCheckKeyLen_p

Definition at line 76 of file hstore_plpython.c.

◆ hstoreCheckValLen

#define hstoreCheckValLen   hstoreCheckValLen_p

Definition at line 77 of file hstore_plpython.c.

◆ hstorePairs

#define hstorePairs   hstorePairs_p

Definition at line 75 of file hstore_plpython.c.

◆ hstoreUniquePairs

#define hstoreUniquePairs   hstoreUniquePairs_p

Definition at line 74 of file hstore_plpython.c.

◆ hstoreUpgrade

#define hstoreUpgrade   hstoreUpgrade_p

Definition at line 73 of file hstore_plpython.c.

◆ PLyObject_AsString

#define PLyObject_AsString   PLyObject_AsString_p

Definition at line 71 of file hstore_plpython.c.

◆ PLyUnicode_FromStringAndSize

#define PLyUnicode_FromStringAndSize   PLyUnicode_FromStringAndSize_p

Definition at line 72 of file hstore_plpython.c.

Typedef Documentation

◆ hstoreCheckKeyLen_t

typedef size_t(* hstoreCheckKeyLen_t) (size_t len)

Definition at line 26 of file hstore_plpython.c.

◆ hstoreCheckValLen_t

typedef size_t(* hstoreCheckValLen_t) (size_t len)

Definition at line 28 of file hstore_plpython.c.

◆ hstorePairs_t

typedef HStore *(* hstorePairs_t) (Pairs *pairs, int32 pcount, int32 buflen)

Definition at line 24 of file hstore_plpython.c.

◆ hstoreUniquePairs_t

typedef int(* hstoreUniquePairs_t) (Pairs *a, int32 l, int32 *buflen)

Definition at line 22 of file hstore_plpython.c.

◆ hstoreUpgrade_t

typedef HStore *(* hstoreUpgrade_t) (Datum orig)

Definition at line 20 of file hstore_plpython.c.

◆ PLyObject_AsString_t

typedef char *(* PLyObject_AsString_t) (PyObject *plrv)

Definition at line 14 of file hstore_plpython.c.

◆ PLyUnicode_FromStringAndSize_t

typedef PyObject *(* PLyUnicode_FromStringAndSize_t) (const char *s, Py_ssize_t size)

Definition at line 16 of file hstore_plpython.c.

Function Documentation

◆ _PG_init()

void _PG_init ( void  )

Definition at line 36 of file hstore_plpython.c.

37{
38 /* Asserts verify that typedefs above match original declarations */
41 load_external_function("$libdir/" PLPYTHON_LIBNAME, "PLyObject_AsString",
42 true, NULL);
45 load_external_function("$libdir/" PLPYTHON_LIBNAME, "PLyUnicode_FromStringAndSize",
46 true, NULL);
49 load_external_function("$libdir/hstore", "hstoreUpgrade",
50 true, NULL);
53 load_external_function("$libdir/hstore", "hstoreUniquePairs",
54 true, NULL);
57 load_external_function("$libdir/hstore", "hstorePairs",
58 true, NULL);
61 load_external_function("$libdir/hstore", "hstoreCheckKeyLen",
62 true, NULL);
65 load_external_function("$libdir/hstore", "hstoreCheckValLen",
66 true, NULL);
67}
#define AssertVariableIsOfType(varname, typename)
Definition: c.h:980
void * load_external_function(const char *filename, const char *funcname, bool signalNotFound, void **filehandle)
Definition: dfmgr.c:95
#define hstoreUpgrade
#define PLyUnicode_FromStringAndSize
int(* hstoreUniquePairs_t)(Pairs *a, int32 l, int32 *buflen)
static hstoreUpgrade_t hstoreUpgrade_p
static hstoreCheckKeyLen_t hstoreCheckKeyLen_p
HStore *(* hstoreUpgrade_t)(Datum orig)
#define hstoreCheckKeyLen
#define hstoreUniquePairs
PyObject *(* PLyUnicode_FromStringAndSize_t)(const char *s, Py_ssize_t size)
static hstorePairs_t hstorePairs_p
static PLyObject_AsString_t PLyObject_AsString_p
#define hstorePairs
char *(* PLyObject_AsString_t)(PyObject *plrv)
static hstoreCheckValLen_t hstoreCheckValLen_p
static hstoreUniquePairs_t hstoreUniquePairs_p
size_t(* hstoreCheckValLen_t)(size_t len)
static PLyUnicode_FromStringAndSize_t PLyUnicode_FromStringAndSize_p
#define hstoreCheckValLen
HStore *(* hstorePairs_t)(Pairs *pairs, int32 pcount, int32 buflen)
size_t(* hstoreCheckKeyLen_t)(size_t len)
#define PLyObject_AsString

References AssertVariableIsOfType, hstoreCheckKeyLen, hstoreCheckKeyLen_p, hstoreCheckValLen, hstoreCheckValLen_p, hstorePairs, hstorePairs_p, hstoreUniquePairs, hstoreUniquePairs_p, hstoreUpgrade, hstoreUpgrade_p, load_external_function(), PLyObject_AsString, PLyObject_AsString_p, PLyUnicode_FromStringAndSize, and PLyUnicode_FromStringAndSize_p.

◆ hstore_to_plpython()

Datum hstore_to_plpython ( PG_FUNCTION_ARGS  )

Definition at line 83 of file hstore_plpython.c.

84{
86 int i;
87 int count = HS_COUNT(in);
88 char *base = STRPTR(in);
89 HEntry *entries = ARRPTR(in);
90 PyObject *dict;
91
92 dict = PyDict_New();
93 if (!dict)
95 (errcode(ERRCODE_OUT_OF_MEMORY),
96 errmsg("out of memory")));
97
98 for (i = 0; i < count; i++)
99 {
100 PyObject *key;
101
103 HSTORE_KEYLEN(entries, i));
104 if (HSTORE_VALISNULL(entries, i))
105 PyDict_SetItem(dict, key, Py_None);
106 else
107 {
108 PyObject *value;
109
111 HSTORE_VALLEN(entries, i));
112 PyDict_SetItem(dict, key, value);
113 Py_XDECREF(value);
114 }
115 Py_XDECREF(key);
116 }
117
118 return PointerGetDatum(dict);
119}
#define ARRPTR(x)
Definition: cube.c:28
int errcode(int sqlerrcode)
Definition: elog.c:854
int errmsg(const char *fmt,...)
Definition: elog.c:1071
#define ERROR
Definition: elog.h:39
#define ereport(elevel,...)
Definition: elog.h:150
#define HS_COUNT(hsp_)
Definition: hstore.h:61
#define HSTORE_KEY(arr_, str_, i_)
Definition: hstore.h:79
#define PG_GETARG_HSTORE_P(x)
Definition: hstore.h:154
#define HSTORE_VALISNULL(arr_, i_)
Definition: hstore.h:83
#define HSTORE_VALLEN(arr_, i_)
Definition: hstore.h:82
#define HSTORE_KEYLEN(arr_, i_)
Definition: hstore.h:81
#define HSTORE_VAL(arr_, str_, i_)
Definition: hstore.h:80
#define STRPTR(x)
Definition: hstore.h:76
static struct @169 value
i
int i
Definition: isn.c:77
static Datum PointerGetDatum(const void *X)
Definition: postgres.h:332
Definition: hstore.h:19
Definition: hstore.h:45

References ARRPTR, ereport, errcode(), errmsg(), ERROR, HS_COUNT, HSTORE_KEY, HSTORE_KEYLEN, HSTORE_VAL, HSTORE_VALISNULL, HSTORE_VALLEN, i, sort-test::key, PG_GETARG_HSTORE_P, PLyUnicode_FromStringAndSize, PointerGetDatum(), STRPTR, and value.

◆ PG_FUNCTION_INFO_V1() [1/2]

PG_FUNCTION_INFO_V1 ( hstore_to_plpython  )

◆ PG_FUNCTION_INFO_V1() [2/2]

PG_FUNCTION_INFO_V1 ( plpython_to_hstore  )

◆ PG_MODULE_MAGIC_EXT()

PG_MODULE_MAGIC_EXT ( .  name = "hstore_plpython",
.  version = PG_VERSION 
)

◆ plpython_to_hstore()

Datum plpython_to_hstore ( PG_FUNCTION_ARGS  )

Definition at line 125 of file hstore_plpython.c.

126{
127 PyObject *dict;
128 PyObject *volatile items;
129 Py_ssize_t pcount;
130 HStore *volatile out;
131
132 dict = (PyObject *) PG_GETARG_POINTER(0);
133
134 /*
135 * As of Python 3, PyMapping_Check() is unreliable unless one first checks
136 * that the object isn't a sequence. (Cleaner solutions exist, but not
137 * before Python 3.10, which we're not prepared to require yet.)
138 */
139 if (PySequence_Check(dict) || !PyMapping_Check(dict))
141 (errcode(ERRCODE_WRONG_OBJECT_TYPE),
142 errmsg("not a Python mapping")));
143
144 pcount = PyMapping_Size(dict);
145 items = PyMapping_Items(dict);
146
147 PG_TRY();
148 {
149 int32 buflen;
150 Py_ssize_t i;
151 Pairs *pairs;
152
153 pairs = palloc(pcount * sizeof(*pairs));
154
155 for (i = 0; i < pcount; i++)
156 {
157 PyObject *tuple;
158 PyObject *key;
159 PyObject *value;
160
161 tuple = PyList_GetItem(items, i);
162 key = PyTuple_GetItem(tuple, 0);
163 value = PyTuple_GetItem(tuple, 1);
164
165 pairs[i].key = PLyObject_AsString(key);
166 pairs[i].keylen = hstoreCheckKeyLen(strlen(pairs[i].key));
167 pairs[i].needfree = true;
168
169 if (value == Py_None)
170 {
171 pairs[i].val = NULL;
172 pairs[i].vallen = 0;
173 pairs[i].isnull = true;
174 }
175 else
176 {
177 pairs[i].val = PLyObject_AsString(value);
178 pairs[i].vallen = hstoreCheckValLen(strlen(pairs[i].val));
179 pairs[i].isnull = false;
180 }
181 }
182
183 pcount = hstoreUniquePairs(pairs, pcount, &buflen);
184 out = hstorePairs(pairs, pcount, buflen);
185 }
186 PG_FINALLY();
187 {
188 Py_DECREF(items);
189 }
190 PG_END_TRY();
191
193}
int32_t int32
Definition: c.h:534
#define PG_TRY(...)
Definition: elog.h:372
#define PG_END_TRY(...)
Definition: elog.h:397
#define PG_FINALLY(...)
Definition: elog.h:389
#define PG_GETARG_POINTER(n)
Definition: fmgr.h:276
#define PG_RETURN_POINTER(x)
Definition: fmgr.h:361
long val
Definition: informix.c:689
void * palloc(Size size)
Definition: mcxt.c:1365
Definition: hstore.h:162
char * val
Definition: hstore.h:164
bool isnull
Definition: hstore.h:167
size_t keylen
Definition: hstore.h:165
char * key
Definition: hstore.h:163
bool needfree
Definition: hstore.h:168
size_t vallen
Definition: hstore.h:166
static ItemArray items
Definition: test_tidstore.c:48

References ereport, errcode(), errmsg(), ERROR, hstoreCheckKeyLen, hstoreCheckValLen, hstorePairs, hstoreUniquePairs, i, Pairs::isnull, items, Pairs::key, sort-test::key, Pairs::keylen, Pairs::needfree, palloc(), PG_END_TRY, PG_FINALLY, PG_GETARG_POINTER, PG_RETURN_POINTER, PG_TRY, PLyObject_AsString, Pairs::val, val, Pairs::vallen, and value.

Variable Documentation

◆ hstoreCheckKeyLen_p

hstoreCheckKeyLen_t hstoreCheckKeyLen_p
static

Definition at line 27 of file hstore_plpython.c.

Referenced by _PG_init().

◆ hstoreCheckValLen_p

hstoreCheckValLen_t hstoreCheckValLen_p
static

Definition at line 29 of file hstore_plpython.c.

Referenced by _PG_init().

◆ hstorePairs_p

hstorePairs_t hstorePairs_p
static

Definition at line 25 of file hstore_plpython.c.

Referenced by _PG_init().

◆ hstoreUniquePairs_p

hstoreUniquePairs_t hstoreUniquePairs_p
static

Definition at line 23 of file hstore_plpython.c.

Referenced by _PG_init().

◆ hstoreUpgrade_p

hstoreUpgrade_t hstoreUpgrade_p
static

Definition at line 21 of file hstore_plpython.c.

Referenced by _PG_init().

◆ PLyObject_AsString_p

PLyObject_AsString_t PLyObject_AsString_p
static

Definition at line 15 of file hstore_plpython.c.

Referenced by _PG_init().

◆ PLyUnicode_FromStringAndSize_p

PLyUnicode_FromStringAndSize_t PLyUnicode_FromStringAndSize_p
static

Definition at line 17 of file hstore_plpython.c.

Referenced by _PG_init().

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