LCOV - differential code coverage report
Current view: top level - src/pl/plpython - plpy_plpymodule.c (source / functions) Coverage Total Hit UBC CBC
Current: Differential Code Coverage HEAD vs 15 Lines: 90.0 % 190 171 19 171
Current Date: 2023-04-08 15:15:32 Functions: 94.1 % 17 16 1 16
Baseline: 15
Baseline Date: 2023-04-08 15:09:40
Legend: Lines: hit not hit

           TLA  Line data    Source code
       1                 : /*
       2                 :  * the plpy module
       3                 :  *
       4                 :  * src/pl/plpython/plpy_plpymodule.c
       5                 :  */
       6                 : 
       7                 : #include "postgres.h"
       8                 : 
       9                 : #include "access/xact.h"
      10                 : #include "mb/pg_wchar.h"
      11                 : #include "plpy_cursorobject.h"
      12                 : #include "plpy_elog.h"
      13                 : #include "plpy_main.h"
      14                 : #include "plpy_planobject.h"
      15                 : #include "plpy_plpymodule.h"
      16                 : #include "plpy_resultobject.h"
      17                 : #include "plpy_spi.h"
      18                 : #include "plpy_subxactobject.h"
      19                 : #include "plpython.h"
      20                 : #include "utils/builtins.h"
      21                 : #include "utils/snapmgr.h"
      22                 : 
      23                 : HTAB       *PLy_spi_exceptions = NULL;
      24                 : 
      25                 : 
      26                 : static void PLy_add_exceptions(PyObject *plpy);
      27                 : static PyObject *PLy_create_exception(char *name,
      28                 :                                       PyObject *base, PyObject *dict,
      29                 :                                       const char *modname, PyObject *mod);
      30                 : static void PLy_generate_spi_exceptions(PyObject *mod, PyObject *base);
      31                 : 
      32                 : /* module functions */
      33                 : static PyObject *PLy_debug(PyObject *self, PyObject *args, PyObject *kw);
      34                 : static PyObject *PLy_log(PyObject *self, PyObject *args, PyObject *kw);
      35                 : static PyObject *PLy_info(PyObject *self, PyObject *args, PyObject *kw);
      36                 : static PyObject *PLy_notice(PyObject *self, PyObject *args, PyObject *kw);
      37                 : static PyObject *PLy_warning(PyObject *self, PyObject *args, PyObject *kw);
      38                 : static PyObject *PLy_error(PyObject *self, PyObject *args, PyObject *kw);
      39                 : static PyObject *PLy_fatal(PyObject *self, PyObject *args, PyObject *kw);
      40                 : static PyObject *PLy_quote_literal(PyObject *self, PyObject *args);
      41                 : static PyObject *PLy_quote_nullable(PyObject *self, PyObject *args);
      42                 : static PyObject *PLy_quote_ident(PyObject *self, PyObject *args);
      43                 : 
      44                 : 
      45                 : /* A list of all known exceptions, generated from backend/utils/errcodes.txt */
      46                 : typedef struct ExceptionMap
      47                 : {
      48                 :     char       *name;
      49                 :     char       *classname;
      50                 :     int         sqlstate;
      51                 : } ExceptionMap;
      52                 : 
      53                 : static const ExceptionMap exception_map[] = {
      54                 : #include "spiexceptions.h"
      55                 :     {NULL, NULL, 0}
      56                 : };
      57                 : 
      58                 : static PyMethodDef PLy_methods[] = {
      59                 :     /*
      60                 :      * logging methods
      61                 :      */
      62                 :     {"debug", (PyCFunction) (pg_funcptr_t) PLy_debug, METH_VARARGS | METH_KEYWORDS, NULL},
      63                 :     {"log", (PyCFunction) (pg_funcptr_t) PLy_log, METH_VARARGS | METH_KEYWORDS, NULL},
      64                 :     {"info", (PyCFunction) (pg_funcptr_t) PLy_info, METH_VARARGS | METH_KEYWORDS, NULL},
      65                 :     {"notice", (PyCFunction) (pg_funcptr_t) PLy_notice, METH_VARARGS | METH_KEYWORDS, NULL},
      66                 :     {"warning", (PyCFunction) (pg_funcptr_t) PLy_warning, METH_VARARGS | METH_KEYWORDS, NULL},
      67                 :     {"error", (PyCFunction) (pg_funcptr_t) PLy_error, METH_VARARGS | METH_KEYWORDS, NULL},
      68                 :     {"fatal", (PyCFunction) (pg_funcptr_t) PLy_fatal, METH_VARARGS | METH_KEYWORDS, NULL},
      69                 : 
      70                 :     /*
      71                 :      * create a stored plan
      72                 :      */
      73                 :     {"prepare", PLy_spi_prepare, METH_VARARGS, NULL},
      74                 : 
      75                 :     /*
      76                 :      * execute a plan or query
      77                 :      */
      78                 :     {"execute", PLy_spi_execute, METH_VARARGS, NULL},
      79                 : 
      80                 :     /*
      81                 :      * escaping strings
      82                 :      */
      83                 :     {"quote_literal", PLy_quote_literal, METH_VARARGS, NULL},
      84                 :     {"quote_nullable", PLy_quote_nullable, METH_VARARGS, NULL},
      85                 :     {"quote_ident", PLy_quote_ident, METH_VARARGS, NULL},
      86                 : 
      87                 :     /*
      88                 :      * create the subtransaction context manager
      89                 :      */
      90                 :     {"subtransaction", PLy_subtransaction_new, METH_NOARGS, NULL},
      91                 : 
      92                 :     /*
      93                 :      * create a cursor
      94                 :      */
      95                 :     {"cursor", PLy_cursor, METH_VARARGS, NULL},
      96                 : 
      97                 :     /*
      98                 :      * transaction control
      99                 :      */
     100                 :     {"commit", PLy_commit, METH_NOARGS, NULL},
     101                 :     {"rollback", PLy_rollback, METH_NOARGS, NULL},
     102                 : 
     103                 :     {NULL, NULL, 0, NULL}
     104                 : };
     105                 : 
     106                 : static PyMethodDef PLy_exc_methods[] = {
     107                 :     {NULL, NULL, 0, NULL}
     108                 : };
     109                 : 
     110                 : static PyModuleDef PLy_module = {
     111                 :     PyModuleDef_HEAD_INIT,
     112                 :     .m_name = "plpy",
     113                 :     .m_size = -1,
     114                 :     .m_methods = PLy_methods,
     115                 : };
     116                 : 
     117                 : static PyModuleDef PLy_exc_module = {
     118                 :     PyModuleDef_HEAD_INIT,
     119                 :     .m_name = "spiexceptions",
     120                 :     .m_size = -1,
     121                 :     .m_methods = PLy_exc_methods,
     122                 : };
     123                 : 
     124                 : /*
     125                 :  * Must have external linkage, because PyMODINIT_FUNC does dllexport on
     126                 :  * Windows-like platforms.
     127                 :  */
     128                 : PyMODINIT_FUNC
     129 CBC          23 : PyInit_plpy(void)
     130                 : {
     131                 :     PyObject   *m;
     132                 : 
     133              23 :     m = PyModule_Create(&PLy_module);
     134              23 :     if (m == NULL)
     135 UBC           0 :         return NULL;
     136                 : 
     137 CBC          23 :     PLy_add_exceptions(m);
     138                 : 
     139              23 :     return m;
     140                 : }
     141                 : 
     142                 : void
     143              23 : PLy_init_plpy(void)
     144                 : {
     145                 :     PyObject   *main_mod,
     146                 :                *main_dict,
     147                 :                *plpy_mod;
     148                 : 
     149                 :     /*
     150                 :      * initialize plpy module
     151                 :      */
     152              23 :     PLy_plan_init_type();
     153              23 :     PLy_result_init_type();
     154              23 :     PLy_subtransaction_init_type();
     155              23 :     PLy_cursor_init_type();
     156                 : 
     157              23 :     PyModule_Create(&PLy_module);
     158                 : 
     159                 :     /* PyDict_SetItemString(plpy, "PlanType", (PyObject *) &PLy_PlanType); */
     160                 : 
     161                 :     /*
     162                 :      * initialize main module, and add plpy
     163                 :      */
     164              23 :     main_mod = PyImport_AddModule("__main__");
     165              23 :     main_dict = PyModule_GetDict(main_mod);
     166              23 :     plpy_mod = PyImport_AddModule("plpy");
     167              23 :     if (plpy_mod == NULL)
     168 UBC           0 :         PLy_elog(ERROR, "could not import \"plpy\" module");
     169 CBC          23 :     PyDict_SetItemString(main_dict, "plpy", plpy_mod);
     170              23 :     if (PyErr_Occurred())
     171 UBC           0 :         PLy_elog(ERROR, "could not import \"plpy\" module");
     172 CBC          23 : }
     173                 : 
     174                 : static void
     175              23 : PLy_add_exceptions(PyObject *plpy)
     176                 : {
     177                 :     PyObject   *excmod;
     178                 :     HASHCTL     hash_ctl;
     179                 : 
     180              23 :     excmod = PyModule_Create(&PLy_exc_module);
     181              23 :     if (excmod == NULL)
     182 UBC           0 :         PLy_elog(ERROR, "could not create the spiexceptions module");
     183                 : 
     184                 :     /*
     185                 :      * PyModule_AddObject does not add a refcount to the object, for some odd
     186                 :      * reason; we must do that.
     187                 :      */
     188 CBC          23 :     Py_INCREF(excmod);
     189              23 :     if (PyModule_AddObject(plpy, "spiexceptions", excmod) < 0)
     190 UBC           0 :         PLy_elog(ERROR, "could not add the spiexceptions module");
     191                 : 
     192 CBC          23 :     PLy_exc_error = PLy_create_exception("plpy.Error", NULL, NULL,
     193                 :                                          "Error", plpy);
     194              23 :     PLy_exc_fatal = PLy_create_exception("plpy.Fatal", NULL, NULL,
     195                 :                                          "Fatal", plpy);
     196              23 :     PLy_exc_spi_error = PLy_create_exception("plpy.SPIError", NULL, NULL,
     197                 :                                              "SPIError", plpy);
     198                 : 
     199              23 :     hash_ctl.keysize = sizeof(int);
     200              23 :     hash_ctl.entrysize = sizeof(PLyExceptionEntry);
     201              23 :     PLy_spi_exceptions = hash_create("PL/Python SPI exceptions", 256,
     202                 :                                      &hash_ctl, HASH_ELEM | HASH_BLOBS);
     203                 : 
     204              23 :     PLy_generate_spi_exceptions(excmod, PLy_exc_spi_error);
     205              23 : }
     206                 : 
     207                 : /*
     208                 :  * Create an exception object and add it to the module
     209                 :  */
     210                 : static PyObject *
     211            5796 : PLy_create_exception(char *name, PyObject *base, PyObject *dict,
     212                 :                      const char *modname, PyObject *mod)
     213                 : {
     214                 :     PyObject   *exc;
     215                 : 
     216            5796 :     exc = PyErr_NewException(name, base, dict);
     217            5796 :     if (exc == NULL)
     218 UBC           0 :         PLy_elog(ERROR, NULL);
     219                 : 
     220                 :     /*
     221                 :      * PyModule_AddObject does not add a refcount to the object, for some odd
     222                 :      * reason; we must do that.
     223                 :      */
     224 CBC        5796 :     Py_INCREF(exc);
     225            5796 :     PyModule_AddObject(mod, modname, exc);
     226                 : 
     227                 :     /*
     228                 :      * The caller will also store a pointer to the exception object in some
     229                 :      * permanent variable, so add another ref to account for that.  This is
     230                 :      * probably excessively paranoid, but let's be sure.
     231                 :      */
     232            5796 :     Py_INCREF(exc);
     233            5796 :     return exc;
     234                 : }
     235                 : 
     236                 : /*
     237                 :  * Add all the autogenerated exceptions as subclasses of SPIError
     238                 :  */
     239                 : static void
     240              23 : PLy_generate_spi_exceptions(PyObject *mod, PyObject *base)
     241                 : {
     242                 :     int         i;
     243                 : 
     244            5750 :     for (i = 0; exception_map[i].name != NULL; i++)
     245                 :     {
     246                 :         bool        found;
     247                 :         PyObject   *exc;
     248                 :         PLyExceptionEntry *entry;
     249                 :         PyObject   *sqlstate;
     250            5727 :         PyObject   *dict = PyDict_New();
     251                 : 
     252            5727 :         if (dict == NULL)
     253 UBC           0 :             PLy_elog(ERROR, NULL);
     254                 : 
     255 CBC        5727 :         sqlstate = PLyUnicode_FromString(unpack_sql_state(exception_map[i].sqlstate));
     256            5727 :         if (sqlstate == NULL)
     257 UBC           0 :             PLy_elog(ERROR, "could not generate SPI exceptions");
     258                 : 
     259 CBC        5727 :         PyDict_SetItemString(dict, "sqlstate", sqlstate);
     260            5727 :         Py_DECREF(sqlstate);
     261                 : 
     262            5727 :         exc = PLy_create_exception(exception_map[i].name, base, dict,
     263            5727 :                                    exception_map[i].classname, mod);
     264                 : 
     265            5727 :         entry = hash_search(PLy_spi_exceptions, &exception_map[i].sqlstate,
     266                 :                             HASH_ENTER, &found);
     267            5727 :         Assert(!found);
     268            5727 :         entry->exc = exc;
     269                 :     }
     270              23 : }
     271                 : 
     272                 : 
     273                 : /*
     274                 :  * the python interface to the elog function
     275                 :  * don't confuse these with PLy_elog
     276                 :  */
     277                 : static PyObject *PLy_output(volatile int level, PyObject *self,
     278                 :                             PyObject *args, PyObject *kw);
     279                 : 
     280                 : static PyObject *
     281               2 : PLy_debug(PyObject *self, PyObject *args, PyObject *kw)
     282                 : {
     283               2 :     return PLy_output(DEBUG2, self, args, kw);
     284                 : }
     285                 : 
     286                 : static PyObject *
     287               2 : PLy_log(PyObject *self, PyObject *args, PyObject *kw)
     288                 : {
     289               2 :     return PLy_output(LOG, self, args, kw);
     290                 : }
     291                 : 
     292                 : static PyObject *
     293             112 : PLy_info(PyObject *self, PyObject *args, PyObject *kw)
     294                 : {
     295             112 :     return PLy_output(INFO, self, args, kw);
     296                 : }
     297                 : 
     298                 : static PyObject *
     299             202 : PLy_notice(PyObject *self, PyObject *args, PyObject *kw)
     300                 : {
     301             202 :     return PLy_output(NOTICE, self, args, kw);
     302                 : }
     303                 : 
     304                 : static PyObject *
     305               5 : PLy_warning(PyObject *self, PyObject *args, PyObject *kw)
     306                 : {
     307               5 :     return PLy_output(WARNING, self, args, kw);
     308                 : }
     309                 : 
     310                 : static PyObject *
     311              11 : PLy_error(PyObject *self, PyObject *args, PyObject *kw)
     312                 : {
     313              11 :     return PLy_output(ERROR, self, args, kw);
     314                 : }
     315                 : 
     316                 : static PyObject *
     317 UBC           0 : PLy_fatal(PyObject *self, PyObject *args, PyObject *kw)
     318                 : {
     319               0 :     return PLy_output(FATAL, self, args, kw);
     320                 : }
     321                 : 
     322                 : static PyObject *
     323 CBC           6 : PLy_quote_literal(PyObject *self, PyObject *args)
     324                 : {
     325                 :     const char *str;
     326                 :     char       *quoted;
     327                 :     PyObject   *ret;
     328                 : 
     329               6 :     if (!PyArg_ParseTuple(args, "s:quote_literal", &str))
     330 UBC           0 :         return NULL;
     331                 : 
     332 CBC           6 :     quoted = quote_literal_cstr(str);
     333               6 :     ret = PLyUnicode_FromString(quoted);
     334               6 :     pfree(quoted);
     335                 : 
     336               6 :     return ret;
     337                 : }
     338                 : 
     339                 : static PyObject *
     340               6 : PLy_quote_nullable(PyObject *self, PyObject *args)
     341                 : {
     342                 :     const char *str;
     343                 :     char       *quoted;
     344                 :     PyObject   *ret;
     345                 : 
     346               6 :     if (!PyArg_ParseTuple(args, "z:quote_nullable", &str))
     347 UBC           0 :         return NULL;
     348                 : 
     349 CBC           6 :     if (str == NULL)
     350               1 :         return PLyUnicode_FromString("NULL");
     351                 : 
     352               5 :     quoted = quote_literal_cstr(str);
     353               5 :     ret = PLyUnicode_FromString(quoted);
     354               5 :     pfree(quoted);
     355                 : 
     356               5 :     return ret;
     357                 : }
     358                 : 
     359                 : static PyObject *
     360               3 : PLy_quote_ident(PyObject *self, PyObject *args)
     361                 : {
     362                 :     const char *str;
     363                 :     const char *quoted;
     364                 :     PyObject   *ret;
     365                 : 
     366               3 :     if (!PyArg_ParseTuple(args, "s:quote_ident", &str))
     367 UBC           0 :         return NULL;
     368                 : 
     369 CBC           3 :     quoted = quote_identifier(str);
     370               3 :     ret = PLyUnicode_FromString(quoted);
     371                 : 
     372               3 :     return ret;
     373                 : }
     374                 : 
     375                 : /* enforce cast of object to string */
     376                 : static char *
     377              58 : object_to_string(PyObject *obj)
     378                 : {
     379              58 :     if (obj)
     380                 :     {
     381              58 :         PyObject   *so = PyObject_Str(obj);
     382                 : 
     383              58 :         if (so != NULL)
     384                 :         {
     385                 :             char       *str;
     386                 : 
     387              58 :             str = pstrdup(PLyUnicode_AsString(so));
     388              58 :             Py_DECREF(so);
     389                 : 
     390              58 :             return str;
     391                 :         }
     392                 :     }
     393                 : 
     394 UBC           0 :     return NULL;
     395                 : }
     396                 : 
     397                 : static PyObject *
     398 CBC         334 : PLy_output(volatile int level, PyObject *self, PyObject *args, PyObject *kw)
     399                 : {
     400             334 :     int         sqlstate = 0;
     401             334 :     char       *volatile sqlstatestr = NULL;
     402             334 :     char       *volatile message = NULL;
     403             334 :     char       *volatile detail = NULL;
     404             334 :     char       *volatile hint = NULL;
     405             334 :     char       *volatile column_name = NULL;
     406             334 :     char       *volatile constraint_name = NULL;
     407             334 :     char       *volatile datatype_name = NULL;
     408             334 :     char       *volatile table_name = NULL;
     409             334 :     char       *volatile schema_name = NULL;
     410                 :     volatile MemoryContext oldcontext;
     411                 :     PyObject   *key,
     412                 :                *value;
     413                 :     PyObject   *volatile so;
     414             334 :     Py_ssize_t  pos = 0;
     415                 : 
     416             334 :     if (PyTuple_Size(args) == 1)
     417                 :     {
     418                 :         /*
     419                 :          * Treat single argument specially to avoid undesirable ('tuple',)
     420                 :          * decoration.
     421                 :          */
     422                 :         PyObject   *o;
     423                 : 
     424             248 :         if (!PyArg_UnpackTuple(args, "plpy.elog", 1, 1, &o))
     425 UBC           0 :             PLy_elog(ERROR, "could not unpack arguments in plpy.elog");
     426 CBC         248 :         so = PyObject_Str(o);
     427                 :     }
     428                 :     else
     429              86 :         so = PyObject_Str(args);
     430                 : 
     431             334 :     if (so == NULL || ((message = PLyUnicode_AsString(so)) == NULL))
     432                 :     {
     433 UBC           0 :         level = ERROR;
     434               0 :         message = dgettext(TEXTDOMAIN, "could not parse error message in plpy.elog");
     435                 :     }
     436 CBC         334 :     message = pstrdup(message);
     437                 : 
     438             334 :     Py_XDECREF(so);
     439                 : 
     440             334 :     if (kw != NULL)
     441                 :     {
     442              80 :         while (PyDict_Next(kw, &pos, &key, &value))
     443                 :         {
     444              61 :             char       *keyword = PLyUnicode_AsString(key);
     445                 : 
     446              61 :             if (strcmp(keyword, "message") == 0)
     447                 :             {
     448                 :                 /* the message should not be overwritten */
     449               9 :                 if (PyTuple_Size(args) != 0)
     450                 :                 {
     451               2 :                     PLy_exception_set(PyExc_TypeError, "argument 'message' given by name and position");
     452               2 :                     return NULL;
     453                 :                 }
     454                 : 
     455               7 :                 if (message)
     456               7 :                     pfree(message);
     457               7 :                 message = object_to_string(value);
     458                 :             }
     459              52 :             else if (strcmp(keyword, "detail") == 0)
     460              15 :                 detail = object_to_string(value);
     461              37 :             else if (strcmp(keyword, "hint") == 0)
     462               7 :                 hint = object_to_string(value);
     463              30 :             else if (strcmp(keyword, "sqlstate") == 0)
     464               7 :                 sqlstatestr = object_to_string(value);
     465              23 :             else if (strcmp(keyword, "schema_name") == 0)
     466               4 :                 schema_name = object_to_string(value);
     467              19 :             else if (strcmp(keyword, "table_name") == 0)
     468               5 :                 table_name = object_to_string(value);
     469              14 :             else if (strcmp(keyword, "column_name") == 0)
     470               4 :                 column_name = object_to_string(value);
     471              10 :             else if (strcmp(keyword, "datatype_name") == 0)
     472               5 :                 datatype_name = object_to_string(value);
     473               5 :             else if (strcmp(keyword, "constraint_name") == 0)
     474               4 :                 constraint_name = object_to_string(value);
     475                 :             else
     476                 :             {
     477               1 :                 PLy_exception_set(PyExc_TypeError,
     478                 :                                   "'%s' is an invalid keyword argument for this function",
     479                 :                                   keyword);
     480               1 :                 return NULL;
     481                 :             }
     482                 :         }
     483                 :     }
     484                 : 
     485             331 :     if (sqlstatestr != NULL)
     486                 :     {
     487               7 :         if (strlen(sqlstatestr) != 5)
     488                 :         {
     489               1 :             PLy_exception_set(PyExc_ValueError, "invalid SQLSTATE code");
     490               1 :             return NULL;
     491                 :         }
     492                 : 
     493               6 :         if (strspn(sqlstatestr, "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ") != 5)
     494                 :         {
     495 UBC           0 :             PLy_exception_set(PyExc_ValueError, "invalid SQLSTATE code");
     496               0 :             return NULL;
     497                 :         }
     498                 : 
     499 CBC           6 :         sqlstate = MAKE_SQLSTATE(sqlstatestr[0],
     500                 :                                  sqlstatestr[1],
     501                 :                                  sqlstatestr[2],
     502                 :                                  sqlstatestr[3],
     503                 :                                  sqlstatestr[4]);
     504                 :     }
     505                 : 
     506             330 :     oldcontext = CurrentMemoryContext;
     507             330 :     PG_TRY();
     508                 :     {
     509             330 :         if (message != NULL)
     510             330 :             pg_verifymbstr(message, strlen(message), false);
     511             330 :         if (detail != NULL)
     512              15 :             pg_verifymbstr(detail, strlen(detail), false);
     513             330 :         if (hint != NULL)
     514               7 :             pg_verifymbstr(hint, strlen(hint), false);
     515             330 :         if (schema_name != NULL)
     516               4 :             pg_verifymbstr(schema_name, strlen(schema_name), false);
     517             330 :         if (table_name != NULL)
     518               5 :             pg_verifymbstr(table_name, strlen(table_name), false);
     519             330 :         if (column_name != NULL)
     520               4 :             pg_verifymbstr(column_name, strlen(column_name), false);
     521             330 :         if (datatype_name != NULL)
     522               5 :             pg_verifymbstr(datatype_name, strlen(datatype_name), false);
     523             330 :         if (constraint_name != NULL)
     524               4 :             pg_verifymbstr(constraint_name, strlen(constraint_name), false);
     525                 : 
     526             330 :         ereport(level,
     527                 :                 ((sqlstate != 0) ? errcode(sqlstate) : 0,
     528                 :                  (message != NULL) ? errmsg_internal("%s", message) : 0,
     529                 :                  (detail != NULL) ? errdetail_internal("%s", detail) : 0,
     530                 :                  (hint != NULL) ? errhint("%s", hint) : 0,
     531                 :                  (column_name != NULL) ?
     532                 :                  err_generic_string(PG_DIAG_COLUMN_NAME, column_name) : 0,
     533                 :                  (constraint_name != NULL) ?
     534                 :                  err_generic_string(PG_DIAG_CONSTRAINT_NAME, constraint_name) : 0,
     535                 :                  (datatype_name != NULL) ?
     536                 :                  err_generic_string(PG_DIAG_DATATYPE_NAME, datatype_name) : 0,
     537                 :                  (table_name != NULL) ?
     538                 :                  err_generic_string(PG_DIAG_TABLE_NAME, table_name) : 0,
     539                 :                  (schema_name != NULL) ?
     540                 :                  err_generic_string(PG_DIAG_SCHEMA_NAME, schema_name) : 0));
     541                 :     }
     542              11 :     PG_CATCH();
     543                 :     {
     544                 :         ErrorData  *edata;
     545                 : 
     546              11 :         MemoryContextSwitchTo(oldcontext);
     547              11 :         edata = CopyErrorData();
     548              11 :         FlushErrorState();
     549                 : 
     550              11 :         PLy_exception_set_with_details(PLy_exc_error, edata);
     551              11 :         FreeErrorData(edata);
     552                 : 
     553              11 :         return NULL;
     554                 :     }
     555             319 :     PG_END_TRY();
     556                 : 
     557                 :     /*
     558                 :      * return a legal object so the interpreter will continue on its merry way
     559                 :      */
     560             319 :     Py_RETURN_NONE;
     561                 : }
        

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