/**********************************************************************
* plpython.c - python as a procedural language for PostgreSQL
*
- * $PostgreSQL: pgsql/src/pl/plpython/plpython.c,v 1.76 2006/03/14 22:48:24 tgl Exp $
+ * $PostgreSQL: pgsql/src/pl/plpython/plpython.c,v 1.121 2009/06/04 18:33:08 tgl Exp $
*
*********************************************************************
*/
+#if defined(_MSC_VER) && defined(_DEBUG)
+/* Python uses #pragma to bring in a non-default libpython on VC++ if
+ * _DEBUG is defined */
+#undef _DEBUG
+/* Also hide away errcode, since we load Python.h before postgres.h */
+#define errcode __msvc_errcode
#include <Python.h>
+#undef errcode
+#define _DEBUG
+#elif defined (_MSC_VER)
+#define errcode __msvc_errcode
+#include <Python.h>
+#undef errcode
+#else
+#include <Python.h>
+#endif
+
+/*
+ * Py_ssize_t compat for Python <= 2.4
+ */
+#if PY_VERSION_HEX < 0x02050000 && !defined(PY_SSIZE_T_MIN)
+typedef int Py_ssize_t;
+
+#define PY_SSIZE_T_MAX INT_MAX
+#define PY_SSIZE_T_MIN INT_MIN
+#endif
+
+/*
+ * PyBool_FromLong is supported from 2.3.
+ */
+#if PY_VERSION_HEX < 0x02030000
+#define PyBool_FromLong(x) PyInt_FromLong(x)
+#endif
+
+
#include "postgres.h"
/* system stuff */
#include <fcntl.h>
/* postgreSQL stuff */
-#include "access/heapam.h"
#include "catalog/pg_proc.h"
#include "catalog/pg_type.h"
#include "commands/trigger.h"
#include "executor/spi.h"
+#include "funcapi.h"
#include "fmgr.h"
+#include "miscadmin.h"
#include "nodes/makefuncs.h"
#include "parser/parse_type.h"
#include "tcop/tcopprot.h"
#include "utils/syscache.h"
#include "utils/typcache.h"
+/* define our text domain for translations */
+#undef TEXTDOMAIN
+#define TEXTDOMAIN PG_TEXTDOMAIN("plpython")
+
#include <compile.h>
#include <eval.h>
+PG_MODULE_MAGIC;
+
/* convert Postgresql Datum or tuple into a PyObject.
* input to Python. Tuples are converted to dictionary
* objects.
typedef struct PLyDatumToOb
{
PLyDatumToObFunc func;
- FmgrInfo typfunc;
+ FmgrInfo typfunc; /* The type's output function */
+ Oid typoid; /* The OID of the type */
Oid typioparam;
bool typbyval;
} PLyDatumToOb;
char *proname; /* SQL name of procedure */
char *pyname; /* Python name of procedure */
TransactionId fn_xmin;
- CommandId fn_cmin;
+ ItemPointerData fn_tid;
bool fn_readonly;
PLyTypeInfo result; /* also used to store info for trigger tuple
* type */
+ bool is_setof; /* true, if procedure returns result set */
+ PyObject *setof; /* contents of result set. */
+ char **argnames; /* Argument names */
PLyTypeInfo args[FUNC_MAX_ARGS];
int nargs;
PyObject *code; /* compiled procedure code */
{
PyObject_HEAD
/* HeapTuple *tuples; */
- PyObject *nrows; /* number of rows returned by query */
+ PyObject * nrows; /* number of rows returned by query */
PyObject *rows; /* data rows, or None if no data returned */
PyObject *status; /* query status, SPI_OK_*, or SPI_ERR_* */
} PLyResultObject;
/* function declarations */
/* Two exported functions: first is the magic telling Postgresql
- * what function call interface it implements. Second allows
- * preinitialization of the interpreter during postmaster startup.
+ * what function call interface it implements. Second is for
+ * initialization of the interpreter during library load.
*/
Datum plpython_call_handler(PG_FUNCTION_ARGS);
-void plpython_init(void);
+void _PG_init(void);
PG_FUNCTION_INFO_V1(plpython_call_handler);
* of plpython_call_handler. initialize the python interpreter
* and global data.
*/
-static void PLy_init_all(void);
static void PLy_init_interp(void);
static void PLy_init_plpy(void);
-/* call PyErr_SetString with a vprint interface */
-static void
-PLy_exception_set(PyObject *, const char *,...)
+/* call PyErr_SetString with a vprint interface and translation support */
+static void PLy_exception_set(PyObject *, const char *,...)
__attribute__((format(printf, 2, 3)));
+/* same, with pluralized message */
+static void PLy_exception_set_plural(PyObject *, const char *, const char *,
+ unsigned long n,...)
+__attribute__((format(printf, 2, 5)))
+__attribute__((format(printf, 3, 5)));
/* Get the innermost python procedure called from the backend */
static char *PLy_procedure_name(PLyProcedure *);
/* some utility functions */
-static void PLy_elog(int, const char *,...);
+static void PLy_elog(int, const char *,...)
+__attribute__((format(printf, 2, 3)));
static char *PLy_traceback(int *);
-static char *PLy_vprintf(const char *fmt, va_list ap);
-static char *PLy_printf(const char *fmt,...);
static void *PLy_malloc(size_t);
-static void *PLy_realloc(void *, size_t);
+static void *PLy_malloc0(size_t);
static char *PLy_strdup(const char *);
static void PLy_free(void *);
static HeapTuple PLy_trigger_handler(FunctionCallInfo fcinfo, PLyProcedure *);
static PyObject *PLy_function_build_args(FunctionCallInfo fcinfo, PLyProcedure *);
+static void PLy_function_delete_args(PLyProcedure *);
static PyObject *PLy_trigger_build_args(FunctionCallInfo fcinfo, PLyProcedure *,
HeapTuple *);
static HeapTuple PLy_modify_tuple(PLyProcedure *, PyObject *,
static PLyProcedure *PLy_procedure_get(FunctionCallInfo fcinfo,
Oid tgreloid);
-static PLyProcedure *PLy_procedure_create(FunctionCallInfo fcinfo,
- Oid tgreloid,
- HeapTuple procTup, char *key);
+static PLyProcedure *PLy_procedure_create(HeapTuple procTup, Oid tgreloid,
+ char *key);
static void PLy_procedure_compile(PLyProcedure *, const char *);
static char *PLy_procedure_munge_source(const char *, const char *);
static PyObject *PLyLong_FromString(const char *);
static PyObject *PLyString_FromString(const char *);
-
-/* global data */
-static bool PLy_first_call = true;
+static HeapTuple PLyMapping_ToTuple(PLyTypeInfo *, PyObject *);
+static HeapTuple PLySequence_ToTuple(PLyTypeInfo *, PyObject *);
+static HeapTuple PLyObject_ToTuple(PLyTypeInfo *, PyObject *);
/*
* Currently active plpython function
PLyProcedure *save_curr_proc;
PLyProcedure *volatile proc = NULL;
- PLy_init_all();
-
if (SPI_connect() != SPI_OK_CONNECT)
- elog(ERROR, "could not connect to SPI manager");
+ elog(ERROR, "SPI_connect failed");
save_curr_proc = PLy_curr_procedure;
if (!PyString_Check(plrv))
ereport(ERROR,
(errcode(ERRCODE_DATA_EXCEPTION),
- errmsg("unexpected return value from trigger procedure"),
- errdetail("Expected None or a String.")));
+ errmsg("unexpected return value from trigger procedure"),
+ errdetail("Expected None or a string.")));
srv = PyString_AsString(plrv);
if (pg_strcasecmp(srv, "SKIP") == 0)
TRIGGER_FIRED_BY_UPDATE(tdata->tg_event))
rv = PLy_modify_tuple(proc, plargs, tdata, rv);
else
- elog(WARNING, "ignoring modified tuple in DELETE trigger");
+ ereport(WARNING,
+ (errmsg("PL/Python trigger function returned \"MODIFY\" in a DELETE trigger -- ignored")));
}
else if (pg_strcasecmp(srv, "OK") != 0)
{
/*
- * accept "OK" as an alternative to None; otherwise,
- * raise an error
+ * accept "OK" as an alternative to None; otherwise, raise an
+ * error
*/
ereport(ERROR,
(errcode(ERRCODE_DATA_EXCEPTION),
- errmsg("unexpected return value from trigger procedure"),
+ errmsg("unexpected return value from trigger procedure"),
errdetail("Expected None, \"OK\", \"SKIP\", or \"MODIFY\".")));
}
}
PG_TRY();
{
if ((plntup = PyDict_GetItemString(pltd, "new")) == NULL)
- elog(ERROR, "TD[\"new\"] deleted, unable to modify tuple");
+ ereport(ERROR,
+ (errmsg("TD[\"new\"] deleted, cannot modify row")));
if (!PyDict_Check(plntup))
- elog(ERROR, "TD[\"new\"] is not a dictionary object");
+ ereport(ERROR,
+ (errmsg("TD[\"new\"] is not a dictionary")));
Py_INCREF(plntup);
plkeys = PyDict_Keys(plntup);
platt = PyList_GetItem(plkeys, i);
if (!PyString_Check(platt))
- elog(ERROR, "attribute name is not a string");
+ ereport(ERROR,
+ (errmsg("name of TD[\"new\"] attribute at ordinal position %d is not a string", i)));
attn = SPI_fnumber(tupdesc, PyString_AsString(platt));
if (attn == SPI_ERROR_NOATTRIBUTE)
- elog(ERROR, "invalid attribute \"%s\" in tuple",
- PyString_AsString(platt));
+ ereport(ERROR,
+ (errmsg("key \"%s\" found in TD[\"new\"] does not exist as a column in the triggering row",
+ PyString_AsString(platt))));
atti = attn - 1;
plval = PyDict_GetItem(plntup, platt);
if (plval == NULL)
- elog(FATAL, "python interpreter is probably corrupted");
+ elog(FATAL, "Python interpreter is probably corrupted");
Py_INCREF(plval);
modattrs[i] = attn;
- if (plval != Py_None && !tupdesc->attrs[atti]->attisdropped)
+ if (tupdesc->attrs[atti]->attisdropped)
+ {
+ modvalues[i] = (Datum) 0;
+ modnulls[i] = 'n';
+ }
+ else if (plval != Py_None)
{
plstr = PyObject_Str(plval);
if (!plstr)
- PLy_elog(ERROR, "function \"%s\" could not modify tuple", proc->proname);
+ PLy_elog(ERROR, "could not compute string representation of Python object in PL/Python function \"%s\" while modifying trigger row",
+ proc->proname);
src = PyString_AsString(plstr);
- modvalues[i] = FunctionCall3(&proc->result.out.r.atts[atti].typfunc,
- CStringGetDatum(src),
- ObjectIdGetDatum(proc->result.out.r.atts[atti].typioparam),
- Int32GetDatum(tupdesc->attrs[atti]->atttypmod));
+ modvalues[i] =
+ InputFunctionCall(&proc->result.out.r.atts[atti].typfunc,
+ src,
+ proc->result.out.r.atts[atti].typioparam,
+ tupdesc->attrs[atti]->atttypmod);
modnulls[i] = ' ';
Py_DECREF(plstr);
}
else
{
- modvalues[i] = PointerGetDatum(NULL);
+ modvalues[i] =
+ InputFunctionCall(&proc->result.out.r.atts[atti].typfunc,
+ NULL,
+ proc->result.out.r.atts[atti].typioparam,
+ tupdesc->attrs[atti]->atttypmod);
modnulls[i] = 'n';
}
rtup = SPI_modifytuple(tdata->tg_relation, otup, natts,
modattrs, modvalues, modnulls);
if (rtup == NULL)
- elog(ERROR, "SPI_modifytuple failed -- error %d", SPI_result);
+ elog(ERROR, "SPI_modifytuple failed: error %d", SPI_result);
}
PG_CATCH();
{
*pltevent,
*pltwhen,
*pltlevel,
- *pltrelid;
+ *pltrelid,
+ *plttablename,
+ *plttableschema;
PyObject *pltargs,
*pytnew,
*pytold;
{
pltdata = PyDict_New();
if (!pltdata)
- PLy_elog(ERROR, "could not build arguments for trigger procedure");
+ PLy_elog(ERROR, "could not create new dictionary while building trigger arguments");
pltname = PyString_FromString(tdata->tg_trigger->tgname);
PyDict_SetItemString(pltdata, "name", pltname);
Py_DECREF(pltrelid);
pfree(stroid);
+ stroid = SPI_getrelname(tdata->tg_relation);
+ plttablename = PyString_FromString(stroid);
+ PyDict_SetItemString(pltdata, "table_name", plttablename);
+ Py_DECREF(plttablename);
+ pfree(stroid);
+
+ stroid = SPI_getnspname(tdata->tg_relation);
+ plttableschema = PyString_FromString(stroid);
+ PyDict_SetItemString(pltdata, "table_schema", plttableschema);
+ Py_DECREF(plttableschema);
+ pfree(stroid);
+
+
if (TRIGGER_FIRED_BEFORE(tdata->tg_event))
pltwhen = PyString_FromString("BEFORE");
else if (TRIGGER_FIRED_AFTER(tdata->tg_event))
pltevent = PyString_FromString("DELETE");
else if (TRIGGER_FIRED_BY_UPDATE(tdata->tg_event))
pltevent = PyString_FromString("UPDATE");
+ else if (TRIGGER_FIRED_BY_TRUNCATE(tdata->tg_event))
+ pltevent = PyString_FromString("TRUNCATE");
else
{
elog(ERROR, "unrecognized OP tg_event: %u", tdata->tg_event);
PG_TRY();
{
- plargs = PLy_function_build_args(fcinfo, proc);
- plrv = PLy_procedure_call(proc, "args", plargs);
+ if (!proc->is_setof || proc->setof == NULL)
+ {
+ /* Simple type returning function or first time for SETOF function */
+ plargs = PLy_function_build_args(fcinfo, proc);
+ plrv = PLy_procedure_call(proc, "args", plargs);
+ if (!proc->is_setof)
- Assert(plrv != NULL);
- Assert(!PLy_error_in_progress);
+ /*
+ * SETOF function parameters will be deleted when last row is
+ * returned
+ */
+ PLy_function_delete_args(proc);
+ Assert(plrv != NULL);
+ Assert(!PLy_error_in_progress);
+ }
/*
* Disconnect from SPI manager and then create the return values datum
if (SPI_finish() != SPI_OK_FINISH)
elog(ERROR, "SPI_finish failed");
+ if (proc->is_setof)
+ {
+ bool has_error = false;
+ ReturnSetInfo *rsi = (ReturnSetInfo *) fcinfo->resultinfo;
+
+ if (proc->setof == NULL)
+ {
+ /* first time -- do checks and setup */
+ if (!rsi || !IsA(rsi, ReturnSetInfo) ||
+ (rsi->allowedModes & SFRM_ValuePerCall) == 0)
+ {
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("unsupported set function return mode"),
+ errdetail("PL/Python set-returning functions only support returning only value per call.")));
+ }
+ rsi->returnMode = SFRM_ValuePerCall;
+
+ /* Make iterator out of returned object */
+ proc->setof = PyObject_GetIter(plrv);
+ Py_DECREF(plrv);
+ plrv = NULL;
+
+ if (proc->setof == NULL)
+ ereport(ERROR,
+ (errcode(ERRCODE_DATATYPE_MISMATCH),
+ errmsg("returned object cannot be iterated"),
+ errdetail("PL/Python set-returning functions must return an iterable object.")));
+ }
+
+ /* Fetch next from iterator */
+ plrv = PyIter_Next(proc->setof);
+ if (plrv)
+ rsi->isDone = ExprMultipleResult;
+ else
+ {
+ rsi->isDone = ExprEndResult;
+ has_error = PyErr_Occurred() != NULL;
+ }
+
+ if (rsi->isDone == ExprEndResult)
+ {
+ /* Iterator is exhausted or error happened */
+ Py_DECREF(proc->setof);
+ proc->setof = NULL;
+
+ Py_XDECREF(plargs);
+ Py_XDECREF(plrv);
+ Py_XDECREF(plrv_so);
+
+ PLy_function_delete_args(proc);
+
+ if (has_error)
+ ereport(ERROR,
+ (errcode(ERRCODE_DATA_EXCEPTION),
+ errmsg("error fetching next item from iterator")));
+
+ fcinfo->isnull = true;
+ return (Datum) NULL;
+ }
+ }
+
/*
- * If the function is declared to return void, the Python
- * return value must be None. For void-returning functions, we
- * also treat a None return value as a special "void datum"
- * rather than NULL (as is the case for non-void-returning
- * functions).
+ * If the function is declared to return void, the Python return value
+ * must be None. For void-returning functions, we also treat a None
+ * return value as a special "void datum" rather than NULL (as is the
+ * case for non-void-returning functions).
*/
if (proc->result.out.d.typoid == VOIDOID)
{
if (plrv != Py_None)
ereport(ERROR,
(errcode(ERRCODE_DATATYPE_MISMATCH),
- errmsg("invalid return value from plpython function"),
- errdetail("Functions returning type \"void\" must return None.")));
+ errmsg("PL/Python function with return type \"void\" did not return None")));
fcinfo->isnull = false;
rv = (Datum) 0;
else if (plrv == Py_None)
{
fcinfo->isnull = true;
- rv = PointerGetDatum(NULL);
+ if (proc->result.is_rowtype < 1)
+ rv = InputFunctionCall(&proc->result.out.d.typfunc,
+ NULL,
+ proc->result.out.d.typioparam,
+ -1);
+ else
+ /* Tuple as None */
+ rv = (Datum) NULL;
+ }
+ else if (proc->result.is_rowtype >= 1)
+ {
+ HeapTuple tuple = NULL;
+
+ if (PySequence_Check(plrv))
+ /* composite type as sequence (tuple, list etc) */
+ tuple = PLySequence_ToTuple(&proc->result, plrv);
+ else if (PyMapping_Check(plrv))
+ /* composite type as mapping (currently only dict) */
+ tuple = PLyMapping_ToTuple(&proc->result, plrv);
+ else
+ /* returned as smth, must provide method __getattr__(name) */
+ tuple = PLyObject_ToTuple(&proc->result, plrv);
+
+ if (tuple != NULL)
+ {
+ fcinfo->isnull = false;
+ rv = HeapTupleGetDatum(tuple);
+ }
+ else
+ {
+ fcinfo->isnull = true;
+ rv = (Datum) NULL;
+ }
}
else
{
fcinfo->isnull = false;
plrv_so = PyObject_Str(plrv);
if (!plrv_so)
- PLy_elog(ERROR, "function \"%s\" could not create return value", proc->proname);
+ PLy_elog(ERROR, "could not create string representation of Python object in PL/Python function \"%s\" while creating return value", proc->proname);
plrv_sc = PyString_AsString(plrv_so);
- rv = FunctionCall3(&proc->result.out.d.typfunc,
- PointerGetDatum(plrv_sc),
- ObjectIdGetDatum(proc->result.out.d.typioparam),
- Int32GetDatum(-1));
+ rv = InputFunctionCall(&proc->result.out.d.typfunc,
+ plrv_sc,
+ proc->result.out.d.typioparam,
+ -1);
}
}
PG_CATCH();
if (rv == NULL || PyErr_Occurred())
{
Py_XDECREF(rv);
- PLy_elog(ERROR, "function \"%s\" failed", proc->proname);
+ PLy_elog(ERROR, "PL/Python function \"%s\" failed", proc->proname);
}
return rv;
tmptup.t_data = td;
arg = PLyDict_FromTuple(&(proc->args[i]), &tmptup, tupdesc);
+ ReleaseTupleDesc(tupdesc);
}
}
else
else
{
char *ct;
- Datum dt;
- dt = FunctionCall3(&(proc->args[i].in.d.typfunc),
- fcinfo->arg[i],
- ObjectIdGetDatum(proc->args[i].in.d.typioparam),
- Int32GetDatum(-1));
- ct = DatumGetCString(dt);
+ ct = OutputFunctionCall(&(proc->args[i].in.d.typfunc),
+ fcinfo->arg[i]);
arg = (proc->args[i].in.d.func) (ct);
pfree(ct);
}
arg = Py_None;
}
- /*
- * FIXME -- error check this
- */
- PyList_SetItem(args, i, arg);
+ if (PyList_SetItem(args, i, arg) == -1)
+ PLy_elog(ERROR, "PyList_SetItem() failed for PL/Python function \"%s\" while setting up arguments", proc->proname);
+
+ if (proc->argnames && proc->argnames[i] &&
+ PyDict_SetItemString(proc->globals, proc->argnames[i], arg) == -1)
+ PLy_elog(ERROR, "PyDict_SetItemString() failed for PL/Python function \"%s\" while setting up arguments", proc->proname);
arg = NULL;
}
}
}
+static void
+PLy_function_delete_args(PLyProcedure * proc)
+{
+ int i;
+
+ if (!proc->argnames)
+ return;
+
+ for (i = 0; i < proc->nargs; i++)
+ if (proc->argnames[i])
+ PyDict_DelItemString(proc->globals, proc->argnames[i]);
+}
+
+
/*
* PLyProcedure functions
*/
elog(FATAL, "proc->me != plproc");
/* did we find an up-to-date cache entry? */
if (proc->fn_xmin != HeapTupleHeaderGetXmin(procTup->t_data) ||
- proc->fn_cmin != HeapTupleHeaderGetCmin(procTup->t_data))
+ !ItemPointerEquals(&proc->fn_tid, &procTup->t_self))
{
Py_DECREF(plproc);
proc = NULL;
}
if (proc == NULL)
- proc = PLy_procedure_create(fcinfo, tgreloid, procTup, key);
+ proc = PLy_procedure_create(procTup, tgreloid, key);
+
+ if (OidIsValid(tgreloid))
+ {
+ /*
+ * Input/output conversion for trigger tuples. Use the result
+ * TypeInfo variable to store the tuple conversion info. We
+ * do this over again on each call to cover the possibility that
+ * the relation's tupdesc changed since the trigger was last called.
+ * PLy_input_tuple_funcs and PLy_output_tuple_funcs are responsible
+ * for not doing repetitive work.
+ */
+ TriggerData *tdata = (TriggerData *) fcinfo->context;
+
+ Assert(CALLED_AS_TRIGGER(fcinfo));
+ PLy_input_tuple_funcs(&(proc->result), tdata->tg_relation->rd_att);
+ PLy_output_tuple_funcs(&(proc->result), tdata->tg_relation->rd_att);
+ }
ReleaseSysCache(procTup);
}
static PLyProcedure *
-PLy_procedure_create(FunctionCallInfo fcinfo, Oid tgreloid,
- HeapTuple procTup, char *key)
+PLy_procedure_create(HeapTuple procTup, Oid tgreloid, char *key)
{
char procName[NAMEDATALEN + 256];
Form_pg_proc procStruct;
rv = snprintf(procName, sizeof(procName),
"__plpython_procedure_%s_%u_trigger_%u",
NameStr(procStruct->proname),
- fcinfo->flinfo->fn_oid,
+ HeapTupleGetOid(procTup),
tgreloid);
else
rv = snprintf(procName, sizeof(procName),
"__plpython_procedure_%s_%u",
NameStr(procStruct->proname),
- fcinfo->flinfo->fn_oid);
+ HeapTupleGetOid(procTup));
if (rv >= sizeof(procName) || rv < 0)
elog(ERROR, "procedure name would overrun buffer");
proc->proname = PLy_strdup(NameStr(procStruct->proname));
proc->pyname = PLy_strdup(procName);
proc->fn_xmin = HeapTupleHeaderGetXmin(procTup->t_data);
- proc->fn_cmin = HeapTupleHeaderGetCmin(procTup->t_data);
+ proc->fn_tid = procTup->t_self;
/* Remember if function is STABLE/IMMUTABLE */
proc->fn_readonly =
(procStruct->provolatile != PROVOLATILE_VOLATILE);
proc->nargs = 0;
proc->code = proc->statics = NULL;
proc->globals = proc->me = NULL;
+ proc->is_setof = procStruct->proretset;
+ proc->setof = NULL;
+ proc->argnames = NULL;
PG_TRY();
{
* get information required for output conversion of the return value,
* but only if this isn't a trigger.
*/
- if (!CALLED_AS_TRIGGER(fcinfo))
+ if (!OidIsValid(tgreloid))
{
HeapTuple rvTypeTup;
Form_pg_type rvTypeStruct;
rvTypeStruct = (Form_pg_type) GETSTRUCT(rvTypeTup);
/* Disallow pseudotype result, except for void */
- if (rvTypeStruct->typtype == 'p' &&
+ if (rvTypeStruct->typtype == TYPTYPE_PSEUDO &&
procStruct->prorettype != VOIDOID)
{
if (procStruct->prorettype == TRIGGEROID)
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
- errmsg("trigger functions may only be called as triggers")));
+ errmsg("trigger functions can only be called as triggers")));
else
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
- errmsg("plpython functions cannot return type %s",
+ errmsg("PL/Python functions cannot return type %s",
format_type_be(procStruct->prorettype))));
}
- if (rvTypeStruct->typtype == 'c')
- ereport(ERROR,
- (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
- errmsg("plpython functions cannot return tuples yet")));
+ if (rvTypeStruct->typtype == TYPTYPE_COMPOSITE)
+ {
+ /*
+ * Tuple: set up later, during first call to
+ * PLy_function_handler
+ */
+ proc->result.out.d.typoid = procStruct->prorettype;
+ proc->result.is_rowtype = 2;
+ }
else
PLy_output_datum_func(&proc->result, rvTypeTup);
ReleaseSysCache(rvTypeTup);
}
- else
- {
- /*
- * input/output conversion for trigger tuples. use the result
- * TypeInfo variable to store the tuple conversion info.
- */
- TriggerData *tdata = (TriggerData *) fcinfo->context;
-
- PLy_input_tuple_funcs(&(proc->result), tdata->tg_relation->rd_att);
- PLy_output_tuple_funcs(&(proc->result), tdata->tg_relation->rd_att);
- }
/*
- * now get information required for input conversion of the procedure's
- * arguments.
+ * Now get information required for input conversion of the
+ * procedure's arguments. Note that we ignore output arguments
+ * here --- since we don't support returning record, and that was
+ * already checked above, there's no need to worry about multiple
+ * output arguments.
*/
- proc->nargs = fcinfo->nargs;
- for (i = 0; i < fcinfo->nargs; i++)
+ if (procStruct->pronargs)
{
- HeapTuple argTypeTup;
- Form_pg_type argTypeStruct;
+ Oid *types;
+ char **names,
+ *modes;
+ int i,
+ pos,
+ total;
+
+ /* extract argument type info from the pg_proc tuple */
+ total = get_func_arg_info(procTup, &types, &names, &modes);
+
+ /* count number of in+inout args into proc->nargs */
+ if (modes == NULL)
+ proc->nargs = total;
+ else
+ {
+ /* proc->nargs was initialized to 0 above */
+ for (i = 0; i < total; i++)
+ {
+ if (modes[i] != PROARGMODE_OUT &&
+ modes[i] != PROARGMODE_TABLE)
+ (proc->nargs)++;
+ }
+ }
- argTypeTup = SearchSysCache(TYPEOID,
- ObjectIdGetDatum(procStruct->proargtypes.values[i]),
- 0, 0, 0);
- if (!HeapTupleIsValid(argTypeTup))
- elog(ERROR, "cache lookup failed for type %u",
- procStruct->proargtypes.values[i]);
- argTypeStruct = (Form_pg_type) GETSTRUCT(argTypeTup);
+ proc->argnames = (char **) PLy_malloc0(sizeof(char *) * proc->nargs);
+ for (i = pos = 0; i < total; i++)
+ {
+ HeapTuple argTypeTup;
+ Form_pg_type argTypeStruct;
- /* Disallow pseudotype argument */
- if (argTypeStruct->typtype == 'p')
- ereport(ERROR,
- (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
- errmsg("plpython functions cannot take type %s",
- format_type_be(procStruct->proargtypes.values[i]))));
-
- if (argTypeStruct->typtype != 'c')
- PLy_input_datum_func(&(proc->args[i]),
- procStruct->proargtypes.values[i],
- argTypeTup);
- else
- proc->args[i].is_rowtype = 2; /* still need to set I/O funcs */
+ if (modes &&
+ (modes[i] == PROARGMODE_OUT ||
+ modes[i] == PROARGMODE_TABLE))
+ continue; /* skip OUT arguments */
- ReleaseSysCache(argTypeTup);
- }
+ Assert(types[i] == procStruct->proargtypes.values[pos]);
+
+ argTypeTup = SearchSysCache(TYPEOID,
+ ObjectIdGetDatum(types[i]),
+ 0, 0, 0);
+ if (!HeapTupleIsValid(argTypeTup))
+ elog(ERROR, "cache lookup failed for type %u", types[i]);
+ argTypeStruct = (Form_pg_type) GETSTRUCT(argTypeTup);
+
+ /* check argument type is OK, set up I/O function info */
+ switch (argTypeStruct->typtype)
+ {
+ case TYPTYPE_PSEUDO:
+ /* Disallow pseudotype argument */
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("PL/Python functions cannot accept type %s",
+ format_type_be(types[i]))));
+ break;
+ case TYPTYPE_COMPOSITE:
+ /* we'll set IO funcs at first call */
+ proc->args[pos].is_rowtype = 2;
+ break;
+ default:
+ PLy_input_datum_func(&(proc->args[pos]),
+ types[i],
+ argTypeTup);
+ break;
+ }
+ /* get argument name */
+ proc->argnames[pos] = names ? PLy_strdup(names[i]) : NULL;
+
+ ReleaseSysCache(argTypeTup);
+
+ pos++;
+ }
+ }
/*
* get the text of the function.
Anum_pg_proc_prosrc, &isnull);
if (isnull)
elog(ERROR, "null prosrc");
- procSource = DatumGetCString(DirectFunctionCall1(textout,
- prosrcdatum));
+ procSource = TextDatumGetCString(prosrcdatum);
PLy_procedure_compile(proc, procSource);
proc->globals = PyDict_Copy(PLy_interp_globals);
/*
- * SD is private preserved data between calls. GD is global data
- * shared by all functions
+ * SD is private preserved data between calls. GD is global data shared by
+ * all functions
*/
proc->statics = PyDict_New();
PyDict_SetItemString(proc->globals, "SD", proc->statics);
else
Py_XDECREF(crv);
- PLy_elog(ERROR, "could not compile function \"%s\"", proc->proname);
+ PLy_elog(ERROR, "could not compile PL/Python function \"%s\"", proc->proname);
}
static char *
if (proc->pyname)
PLy_free(proc->pyname);
for (i = 0; i < proc->nargs; i++)
+ {
if (proc->args[i].is_rowtype == 1)
{
if (proc->args[i].in.r.atts)
if (proc->args[i].out.r.atts)
PLy_free(proc->args[i].out.r.atts);
}
+ if (proc->argnames && proc->argnames[i])
+ PLy_free(proc->argnames[i]);
+ }
+ if (proc->argnames)
+ PLy_free(proc->argnames);
}
-/* conversion functions. remember output from python is
- * input to postgresql, and vis versa.
+/*
+ * Conversion functions. Remember output from Python is input to
+ * PostgreSQL, and vice versa.
*/
static void
PLy_input_tuple_funcs(PLyTypeInfo * arg, TupleDesc desc)
if (arg->is_rowtype == 0)
elog(ERROR, "PLyTypeInfo struct is initialized for a Datum");
-
arg->is_rowtype = 1;
- arg->in.r.natts = desc->natts;
- arg->in.r.atts = PLy_malloc(desc->natts * sizeof(PLyDatumToOb));
+
+ if (arg->in.r.natts != desc->natts)
+ {
+ if (arg->in.r.atts)
+ PLy_free(arg->in.r.atts);
+ arg->in.r.natts = desc->natts;
+ arg->in.r.atts = PLy_malloc0(desc->natts * sizeof(PLyDatumToOb));
+ }
for (i = 0; i < desc->natts; i++)
{
if (desc->attrs[i]->attisdropped)
continue;
+ if (arg->in.r.atts[i].typoid == desc->attrs[i]->atttypid)
+ continue; /* already set up this entry */
+
typeTup = SearchSysCache(TYPEOID,
ObjectIdGetDatum(desc->attrs[i]->atttypid),
0, 0, 0);
if (arg->is_rowtype == 0)
elog(ERROR, "PLyTypeInfo struct is initialized for a Datum");
-
arg->is_rowtype = 1;
- arg->out.r.natts = desc->natts;
- arg->out.r.atts = PLy_malloc(desc->natts * sizeof(PLyDatumToOb));
+
+ if (arg->out.r.natts != desc->natts)
+ {
+ if (arg->out.r.atts)
+ PLy_free(arg->out.r.atts);
+ arg->out.r.natts = desc->natts;
+ arg->out.r.atts = PLy_malloc0(desc->natts * sizeof(PLyDatumToOb));
+ }
for (i = 0; i < desc->natts; i++)
{
if (desc->attrs[i]->attisdropped)
continue;
+ if (arg->out.r.atts[i].typoid == desc->attrs[i]->atttypid)
+ continue; /* already set up this entry */
+
typeTup = SearchSysCache(TYPEOID,
ObjectIdGetDatum(desc->attrs[i]->atttypid),
0, 0, 0);
/* Get the type's conversion information */
perm_fmgr_info(typeStruct->typoutput, &arg->typfunc);
+ arg->typoid = HeapTupleGetOid(typeTup);
arg->typioparam = getTypeIOParam(typeTup);
arg->typbyval = typeStruct->typbyval;
static PyObject *
PLyBool_FromString(const char *src)
{
+ /*
+ * We would like to use Py_RETURN_TRUE and Py_RETURN_FALSE here for
+ * generating SQL from trigger functions, but those are only supported in
+ * Python >= 2.3, and we support older versions.
+ * http://docs.python.org/api/boolObjects.html
+ */
if (src[0] == 't')
- return PyInt_FromLong(1);
- return PyInt_FromLong(0);
+ return PyBool_FromLong(1);
+ return PyBool_FromLong(0);
}
static PyObject *
dict = PyDict_New();
if (dict == NULL)
- PLy_elog(ERROR, "could not create tuple dictionary");
+ PLy_elog(ERROR, "could not create new dictionary");
PG_TRY();
{
{
char *key,
*vsrc;
- Datum vattr,
- vdat;
+ Datum vattr;
bool is_null;
PyObject *value;
PyDict_SetItemString(dict, key, Py_None);
else
{
- vdat = FunctionCall3(&info->in.r.atts[i].typfunc,
- vattr,
- ObjectIdGetDatum(info->in.r.atts[i].typioparam),
- Int32GetDatum(desc->attrs[i]->atttypmod));
- vsrc = DatumGetCString(vdat);
+ vsrc = OutputFunctionCall(&info->in.r.atts[i].typfunc,
+ vattr);
/*
* no exceptions allowed
return dict;
}
+
+static HeapTuple
+PLyMapping_ToTuple(PLyTypeInfo * info, PyObject * mapping)
+{
+ TupleDesc desc;
+ HeapTuple tuple;
+ Datum *values;
+ bool *nulls;
+ volatile int i;
+
+ Assert(PyMapping_Check(mapping));
+
+ desc = lookup_rowtype_tupdesc(info->out.d.typoid, -1);
+ if (info->is_rowtype == 2)
+ PLy_output_tuple_funcs(info, desc);
+ Assert(info->is_rowtype == 1);
+
+ /* Build tuple */
+ values = palloc(sizeof(Datum) * desc->natts);
+ nulls = palloc(sizeof(bool) * desc->natts);
+ for (i = 0; i < desc->natts; ++i)
+ {
+ char *key;
+ PyObject *volatile value,
+ *volatile so;
+
+ key = NameStr(desc->attrs[i]->attname);
+ value = so = NULL;
+ PG_TRY();
+ {
+ value = PyMapping_GetItemString(mapping, key);
+ if (value == Py_None)
+ {
+ values[i] = (Datum) NULL;
+ nulls[i] = true;
+ }
+ else if (value)
+ {
+ char *valuestr;
+
+ so = PyObject_Str(value);
+ if (so == NULL)
+ PLy_elog(ERROR, "could not compute string representation of Python object");
+ valuestr = PyString_AsString(so);
+
+ values[i] = InputFunctionCall(&info->out.r.atts[i].typfunc
+ ,valuestr
+ ,info->out.r.atts[i].typioparam
+ ,-1);
+ Py_DECREF(so);
+ so = NULL;
+ nulls[i] = false;
+ }
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_UNDEFINED_COLUMN),
+ errmsg("key \"%s\" not found in mapping", key),
+ errhint("To return null in a column, "
+ "add the value None to the mapping with the key named after the column.")));
+
+ Py_XDECREF(value);
+ value = NULL;
+ }
+ PG_CATCH();
+ {
+ Py_XDECREF(so);
+ Py_XDECREF(value);
+ PG_RE_THROW();
+ }
+ PG_END_TRY();
+ }
+
+ tuple = heap_form_tuple(desc, values, nulls);
+ ReleaseTupleDesc(desc);
+ pfree(values);
+ pfree(nulls);
+
+ return tuple;
+}
+
+
+static HeapTuple
+PLySequence_ToTuple(PLyTypeInfo * info, PyObject * sequence)
+{
+ TupleDesc desc;
+ HeapTuple tuple;
+ Datum *values;
+ bool *nulls;
+ volatile int i;
+
+ Assert(PySequence_Check(sequence));
+
+ /*
+ * Check that sequence length is exactly same as PG tuple's. We actually
+ * can ignore exceeding items or assume missing ones as null but to avoid
+ * plpython developer's errors we are strict here
+ */
+ desc = lookup_rowtype_tupdesc(info->out.d.typoid, -1);
+ if (PySequence_Length(sequence) != desc->natts)
+ ereport(ERROR,
+ (errcode(ERRCODE_DATATYPE_MISMATCH),
+ errmsg("length of returned sequence did not match number of columns in row")));
+
+ if (info->is_rowtype == 2)
+ PLy_output_tuple_funcs(info, desc);
+ Assert(info->is_rowtype == 1);
+
+ /* Build tuple */
+ values = palloc(sizeof(Datum) * desc->natts);
+ nulls = palloc(sizeof(bool) * desc->natts);
+ for (i = 0; i < desc->natts; ++i)
+ {
+ PyObject *volatile value,
+ *volatile so;
+
+ value = so = NULL;
+ PG_TRY();
+ {
+ value = PySequence_GetItem(sequence, i);
+ Assert(value);
+ if (value == Py_None)
+ {
+ values[i] = (Datum) NULL;
+ nulls[i] = true;
+ }
+ else if (value)
+ {
+ char *valuestr;
+
+ so = PyObject_Str(value);
+ if (so == NULL)
+ PLy_elog(ERROR, "could not compute string representation of Python object");
+ valuestr = PyString_AsString(so);
+ values[i] = InputFunctionCall(&info->out.r.atts[i].typfunc
+ ,valuestr
+ ,info->out.r.atts[i].typioparam
+ ,-1);
+ Py_DECREF(so);
+ so = NULL;
+ nulls[i] = false;
+ }
+
+ Py_XDECREF(value);
+ value = NULL;
+ }
+ PG_CATCH();
+ {
+ Py_XDECREF(so);
+ Py_XDECREF(value);
+ PG_RE_THROW();
+ }
+ PG_END_TRY();
+ }
+
+ tuple = heap_form_tuple(desc, values, nulls);
+ ReleaseTupleDesc(desc);
+ pfree(values);
+ pfree(nulls);
+
+ return tuple;
+}
+
+
+static HeapTuple
+PLyObject_ToTuple(PLyTypeInfo * info, PyObject * object)
+{
+ TupleDesc desc;
+ HeapTuple tuple;
+ Datum *values;
+ bool *nulls;
+ volatile int i;
+
+ desc = lookup_rowtype_tupdesc(info->out.d.typoid, -1);
+ if (info->is_rowtype == 2)
+ PLy_output_tuple_funcs(info, desc);
+ Assert(info->is_rowtype == 1);
+
+ /* Build tuple */
+ values = palloc(sizeof(Datum) * desc->natts);
+ nulls = palloc(sizeof(bool) * desc->natts);
+ for (i = 0; i < desc->natts; ++i)
+ {
+ char *key;
+ PyObject *volatile value,
+ *volatile so;
+
+ key = NameStr(desc->attrs[i]->attname);
+ value = so = NULL;
+ PG_TRY();
+ {
+ value = PyObject_GetAttrString(object, key);
+ if (value == Py_None)
+ {
+ values[i] = (Datum) NULL;
+ nulls[i] = true;
+ }
+ else if (value)
+ {
+ char *valuestr;
+
+ so = PyObject_Str(value);
+ if (so == NULL)
+ PLy_elog(ERROR, "could not compute string representation of Python object");
+ valuestr = PyString_AsString(so);
+ values[i] = InputFunctionCall(&info->out.r.atts[i].typfunc
+ ,valuestr
+ ,info->out.r.atts[i].typioparam
+ ,-1);
+ Py_DECREF(so);
+ so = NULL;
+ nulls[i] = false;
+ }
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_UNDEFINED_COLUMN),
+ errmsg("attribute \"%s\" does not exist in Python object", key),
+ errhint("To return null in a column, "
+ "let the returned object have an attribute named "
+ "after column with value None.")));
+
+ Py_XDECREF(value);
+ value = NULL;
+ }
+ PG_CATCH();
+ {
+ Py_XDECREF(so);
+ Py_XDECREF(value);
+ PG_RE_THROW();
+ }
+ PG_END_TRY();
+ }
+
+ tuple = heap_form_tuple(desc, values, nulls);
+ ReleaseTupleDesc(desc);
+ pfree(values);
+ pfree(nulls);
+
+ return tuple;
+}
+
+
/* initialization, some python variables function declared here */
/* interface to postgresql elog */
static PyObject *PLy_result_getattr(PyObject *, char *);
static PyObject *PLy_result_nrows(PyObject *, PyObject *);
static PyObject *PLy_result_status(PyObject *, PyObject *);
-static int PLy_result_length(PyObject *);
-static PyObject *PLy_result_item(PyObject *, int);
-static PyObject *PLy_result_slice(PyObject *, int, int);
-static int PLy_result_ass_item(PyObject *, int, PyObject *);
-static int PLy_result_ass_slice(PyObject *, int, int, PyObject *);
+static Py_ssize_t PLy_result_length(PyObject *);
+static PyObject *PLy_result_item(PyObject *, Py_ssize_t);
+static PyObject *PLy_result_slice(PyObject *, Py_ssize_t, Py_ssize_t);
+static int PLy_result_ass_item(PyObject *, Py_ssize_t, PyObject *);
+static int PLy_result_ass_slice(PyObject *, Py_ssize_t, Py_ssize_t, PyObject *);
static PyObject *PLy_spi_prepare(PyObject *, PyObject *);
/*
* methods
*/
- (destructor) PLy_plan_dealloc, /* tp_dealloc */
+ PLy_plan_dealloc, /* tp_dealloc */
0, /* tp_print */
- (getattrfunc) PLy_plan_getattr, /* tp_getattr */
+ PLy_plan_getattr, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_compare */
0, /* tp_repr */
0, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
- 0, /* tp_xxx4 */
+ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
PLy_plan_doc, /* tp_doc */
};
{NULL, NULL, 0, NULL}
};
-
static PySequenceMethods PLy_result_as_sequence = {
- (inquiry) PLy_result_length, /* sq_length */
- (binaryfunc) 0, /* sq_concat */
- (intargfunc) 0, /* sq_repeat */
- (intargfunc) PLy_result_item, /* sq_item */
- (intintargfunc) PLy_result_slice, /* sq_slice */
- (intobjargproc) PLy_result_ass_item, /* sq_ass_item */
- (intintobjargproc) PLy_result_ass_slice, /* sq_ass_slice */
+ PLy_result_length, /* sq_length */
+ NULL, /* sq_concat */
+ NULL, /* sq_repeat */
+ PLy_result_item, /* sq_item */
+ PLy_result_slice, /* sq_slice */
+ PLy_result_ass_item, /* sq_ass_item */
+ PLy_result_ass_slice, /* sq_ass_slice */
};
static PyTypeObject PLy_ResultType = {
/*
* methods
*/
- (destructor) PLy_result_dealloc, /* tp_dealloc */
+ PLy_result_dealloc, /* tp_dealloc */
0, /* tp_print */
- (getattrfunc) PLy_result_getattr, /* tp_getattr */
+ PLy_result_getattr, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_compare */
0, /* tp_repr */
0, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
- 0, /* tp_xxx4 */
+ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
PLy_result_doc, /* tp_doc */
};
PLy_free(ob->args);
}
- PyMem_DEL(arg);
+ arg->ob_type->tp_free(arg);
}
return Py_True;
/* return PyInt_FromLong(self->status); */
}
- PyErr_SetString(PLy_exc_error, "plan.status() takes no arguments");
+ PLy_exception_set(PLy_exc_error, "plan.status takes no arguments");
return NULL;
}
Py_XDECREF(ob->rows);
Py_XDECREF(ob->status);
- PyMem_DEL(ob);
+ arg->ob_type->tp_free(arg);
}
static PyObject *
return ob->status;
}
-static int
+static Py_ssize_t
PLy_result_length(PyObject * arg)
{
PLyResultObject *ob = (PLyResultObject *) arg;
}
static PyObject *
-PLy_result_item(PyObject * arg, int idx)
+PLy_result_item(PyObject * arg, Py_ssize_t idx)
{
PyObject *rv;
PLyResultObject *ob = (PLyResultObject *) arg;
}
static int
-PLy_result_ass_item(PyObject * arg, int idx, PyObject * item)
+PLy_result_ass_item(PyObject * arg, Py_ssize_t idx, PyObject * item)
{
int rv;
PLyResultObject *ob = (PLyResultObject *) arg;
}
static PyObject *
-PLy_result_slice(PyObject * arg, int lidx, int hidx)
+PLy_result_slice(PyObject * arg, Py_ssize_t lidx, Py_ssize_t hidx)
{
PyObject *rv;
PLyResultObject *ob = (PLyResultObject *) arg;
}
static int
-PLy_result_ass_slice(PyObject * arg, int lidx, int hidx, PyObject * slice)
+PLy_result_ass_slice(PyObject * arg, Py_ssize_t lidx, Py_ssize_t hidx, PyObject * slice)
{
int rv;
PLyResultObject *ob = (PLyResultObject *) arg;
/* Can't execute more if we have an unhandled error */
if (PLy_error_in_progress)
{
- PyErr_SetString(PLy_exc_error, "Transaction aborted.");
+ PLy_exception_set(PLy_exc_error, "transaction aborted");
return NULL;
}
if (!PyArg_ParseTuple(args, "s|O", &query, &list))
{
- PyErr_SetString(PLy_exc_spi_error,
- "Invalid arguments for plpy.prepare()");
+ PLy_exception_set(PLy_exc_spi_error,
+ "invalid arguments for plpy.prepare");
return NULL;
}
if (list && (!PySequence_Check(list)))
{
- PyErr_SetString(PLy_exc_spi_error,
- "Second argument in plpy.prepare() must be a sequence");
+ PLy_exception_set(PLy_exc_spi_error,
+ "second argument of plpy.prepare must be a sequence");
return NULL;
}
for (i = 0; i < nargs; i++)
{
char *sptr;
- List *names;
HeapTuple typeTup;
+ Oid typeId;
+ int32 typmod;
Form_pg_type typeStruct;
optr = PySequence_GetItem(list, i);
if (!PyString_Check(optr))
- elog(ERROR, "Type names must be strings.");
+ ereport(ERROR,
+ (errmsg("plpy.prepare: type name at ordinal position %d is not a string", i)));
sptr = PyString_AsString(optr);
- /*
- * Parse possibly-qualified type name and look it up in
- * pg_type
- */
- names = stringToQualifiedNameList(sptr,
- "PLy_spi_prepare");
- typeTup = typenameType(NULL,
- makeTypeNameFromNameList(names));
+ /********************************************************
+ * Resolve argument type names and then look them up by
+ * oid in the system cache, and remember the required
+ *information for input conversion.
+ ********************************************************/
+
+ parseTypeString(sptr, &typeId, &typmod);
+
+ typeTup = SearchSysCache(TYPEOID,
+ ObjectIdGetDatum(typeId),
+ 0, 0, 0);
+ if (!HeapTupleIsValid(typeTup))
+ elog(ERROR, "cache lookup failed for type %u", typeId);
+
Py_DECREF(optr);
optr = NULL; /* this is important */
- plan->types[i] = HeapTupleGetOid(typeTup);
+ plan->types[i] = typeId;
typeStruct = (Form_pg_type) GETSTRUCT(typeTup);
- if (typeStruct->typtype != 'c')
+ if (typeStruct->typtype != TYPTYPE_COMPOSITE)
PLy_output_datum_func(&plan->args[i], typeTup);
else
- elog(ERROR, "tuples not handled in plpy.prepare, yet.");
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("plpy.prepare does not support composite types")));
ReleaseSysCache(typeTup);
}
}
Py_DECREF(plan);
Py_XDECREF(optr);
if (!PyErr_Occurred())
- PyErr_SetString(PLy_exc_spi_error,
- "Unknown error in PLy_spi_prepare");
+ PLy_exception_set(PLy_exc_spi_error,
+ "unrecognized error in PLy_spi_prepare");
/* XXX this oughta be replaced with errcontext mechanism */
- PLy_elog(WARNING, "in function %s:",
+ PLy_elog(WARNING, "in PL/Python function \"%s\"",
PLy_procedure_name(PLy_curr_procedure));
return NULL;
}
/* Can't execute more if we have an unhandled error */
if (PLy_error_in_progress)
{
- PyErr_SetString(PLy_exc_error, "Transaction aborted.");
+ PLy_exception_set(PLy_exc_error, "transaction aborted");
return NULL;
}
is_PLyPlanObject(plan))
return PLy_spi_execute_plan(plan, list, limit);
- PyErr_SetString(PLy_exc_error, "Expected a query or plan.");
+ PLy_exception_set(PLy_exc_error, "plpy.execute expected a query or a plan");
return NULL;
}
{
if (!PySequence_Check(list) || PyString_Check(list))
{
- char *msg = "plpy.execute() takes a sequence as its second argument";
-
- PyErr_SetString(PLy_exc_spi_error, msg);
+ PLy_exception_set(PLy_exc_spi_error, "plpy.execute takes a sequence as its second argument");
return NULL;
}
nargs = PySequence_Length(list);
PyObject *so = PyObject_Str(list);
if (!so)
- PLy_elog(ERROR, "function \"%s\" could not execute plan",
+ PLy_elog(ERROR, "PL/Python function \"%s\" could not execute plan",
PLy_procedure_name(PLy_curr_procedure));
sv = PyString_AsString(so);
- PLy_exception_set(PLy_exc_spi_error,
- "Expected sequence of %d arguments, got %d. %s",
- plan->nargs, nargs, sv);
+ PLy_exception_set_plural(PLy_exc_spi_error,
+ "Expected sequence of %d argument, got %d: %s",
+ "Expected sequence of %d arguments, got %d: %s",
+ plan->nargs,
+ plan->nargs, nargs, sv);
Py_DECREF(so);
return NULL;
PG_TRY();
{
char *nulls = palloc(nargs * sizeof(char));
+ volatile int j;
- for (i = 0; i < nargs; i++)
+ for (j = 0; j < nargs; j++)
{
PyObject *elem,
*so;
- elem = PySequence_GetItem(list, i);
+ elem = PySequence_GetItem(list, j);
if (elem != Py_None)
{
so = PyObject_Str(elem);
if (!so)
- PLy_elog(ERROR, "function \"%s\" could not execute plan",
+ PLy_elog(ERROR, "PL/Python function \"%s\" could not execute plan",
PLy_procedure_name(PLy_curr_procedure));
Py_DECREF(elem);
PG_TRY();
{
- char *sv = PyString_AsString(so);
+ char *sv = PyString_AsString(so);
- plan->values[i] =
- FunctionCall3(&(plan->args[i].out.d.typfunc),
- CStringGetDatum(sv),
- ObjectIdGetDatum(plan->args[i].out.d.typioparam),
- Int32GetDatum(-1));
+ plan->values[j] =
+ InputFunctionCall(&(plan->args[j].out.d.typfunc),
+ sv,
+ plan->args[j].out.d.typioparam,
+ -1);
}
PG_CATCH();
{
PG_END_TRY();
Py_DECREF(so);
- nulls[i] = ' ';
+ nulls[j] = ' ';
}
else
{
Py_DECREF(elem);
- plan->values[i] = PointerGetDatum(NULL);
- nulls[i] = 'n';
+ plan->values[j] =
+ InputFunctionCall(&(plan->args[j].out.d.typfunc),
+ NULL,
+ plan->args[j].out.d.typioparam,
+ -1);
+ nulls[j] = 'n';
}
}
}
PG_CATCH();
{
+ int k;
+
MemoryContextSwitchTo(oldcontext);
PLy_error_in_progress = CopyErrorData();
FlushErrorState();
/*
* cleanup plan->values array
*/
- for (i = 0; i < nargs; i++)
+ for (k = 0; k < nargs; k++)
{
- if (!plan->args[i].out.d.typbyval &&
- (plan->values[i] != PointerGetDatum(NULL)))
+ if (!plan->args[k].out.d.typbyval &&
+ (plan->values[k] != PointerGetDatum(NULL)))
{
- pfree(DatumGetPointer(plan->values[i]));
- plan->values[i] = PointerGetDatum(NULL);
+ pfree(DatumGetPointer(plan->values[k]));
+ plan->values[k] = PointerGetDatum(NULL);
}
}
if (!PyErr_Occurred())
- PyErr_SetString(PLy_exc_error,
- "Unknown error in PLy_spi_execute_plan");
+ PLy_exception_set(PLy_exc_error,
+ "unrecognized error in PLy_spi_execute_plan");
/* XXX this oughta be replaced with errcontext mechanism */
- PLy_elog(WARNING, "in function %s:",
+ PLy_elog(WARNING, "in PL/Python function \"%s\"",
PLy_procedure_name(PLy_curr_procedure));
return NULL;
}
PLy_error_in_progress = CopyErrorData();
FlushErrorState();
if (!PyErr_Occurred())
- PyErr_SetString(PLy_exc_spi_error,
- "Unknown error in PLy_spi_execute_query");
+ PLy_exception_set(PLy_exc_spi_error,
+ "unrecognized error in PLy_spi_execute_query");
/* XXX this oughta be replaced with errcontext mechanism */
- PLy_elog(WARNING, "in function %s:",
+ PLy_elog(WARNING, "in PL/Python function \"%s\"",
PLy_procedure_name(PLy_curr_procedure));
return NULL;
}
Py_DECREF(result->status);
result->status = PyInt_FromLong(status);
- if (status == SPI_OK_UTILITY)
- {
- Py_DECREF(result->nrows);
- result->nrows = PyInt_FromLong(0);
- }
- else if (status != SPI_OK_SELECT)
+ if (status > 0 && tuptable == NULL)
{
Py_DECREF(result->nrows);
result->nrows = PyInt_FromLong(rows);
}
- else
+ else if (status > 0 && tuptable != NULL)
{
PLyTypeInfo args;
int i;
- PLy_typeinfo_init(&args);
Py_DECREF(result->nrows);
result->nrows = PyInt_FromLong(rows);
+ PLy_typeinfo_init(&args);
oldcontext = CurrentMemoryContext;
PG_TRY();
PLy_error_in_progress = CopyErrorData();
FlushErrorState();
if (!PyErr_Occurred())
- PyErr_SetString(PLy_exc_error,
- "Unknown error in PLy_spi_execute_fetch_result");
+ PLy_exception_set(PLy_exc_error,
+ "unrecognized error in PLy_spi_execute_fetch_result");
Py_DECREF(result);
PLy_typeinfo_dealloc(&args);
return NULL;
*/
/*
- * plpython_init() - Initialize everything that can be
- * safely initialized during postmaster
- * startup.
+ * _PG_init() - library load-time initialization
*
- * DO NOT make this static --- it has to be callable by preload
+ * DO NOT make this static nor change its name!
*/
void
-plpython_init(void)
+_PG_init(void)
{
- static volatile bool init_active = false;
+ /* Be sure we do initialization only once (should be redundant now) */
+ static bool inited = false;
- /* Do initialization only once */
- if (!PLy_first_call)
+ if (inited)
return;
- if (init_active)
- elog(FATAL, "initialization of language module failed");
- init_active = true;
+ pg_bindtextdomain(TEXTDOMAIN);
Py_Initialize();
PLy_init_interp();
if (PLy_procedure_cache == NULL)
PLy_elog(ERROR, "could not create procedure cache");
- PLy_first_call = false;
-}
-
-static void
-PLy_init_all(void)
-{
- /* Execute postmaster-startup safe initialization */
- if (PLy_first_call)
- plpython_init();
-
- /*
- * Any other initialization that must be done each time a new backend
- * starts -- currently none
- */
+ inited = true;
}
static void
mainmod = PyImport_AddModule("__main__");
if (mainmod == NULL || PyErr_Occurred())
- PLy_elog(ERROR, "could not import \"__main__\" module.");
+ PLy_elog(ERROR, "could not import \"__main__\" module");
Py_INCREF(mainmod);
PLy_interp_globals = PyModule_GetDict(mainmod);
PLy_interp_safe_globals = PyDict_New();
/*
* initialize plpy module
*/
- PLy_PlanType.ob_type = PLy_ResultType.ob_type = &PyType_Type;
+ if (PyType_Ready(&PLy_PlanType) < 0)
+ elog(ERROR, "could not initialize PLy_PlanType");
+ if (PyType_Ready(&PLy_ResultType) < 0)
+ elog(ERROR, "could not initialize PLy_ResultType");
+
plpy = Py_InitModule("plpy", PLy_methods);
plpy_dict = PyModule_GetDict(plpy);
plpy_mod = PyImport_AddModule("plpy");
PyDict_SetItemString(main_dict, "plpy", plpy_mod);
if (PyErr_Occurred())
- elog(ERROR, "could not init plpy");
+ elog(ERROR, "could not initialize plpy");
}
/* the python interface to the elog function
* don't confuse these with PLy_elog
*/
-static PyObject *PLy_output(int, PyObject *, PyObject *);
+static PyObject *PLy_output(volatile int, PyObject *, PyObject *);
static PyObject *
PLy_debug(PyObject * self, PyObject * args)
if (so == NULL || ((sv = PyString_AsString(so)) == NULL))
{
level = ERROR;
- sv = "Unable to parse error message in `plpy.elog'";
+ sv = dgettext(TEXTDOMAIN, "could not parse error message in plpy.elog");
}
oldcontext = CurrentMemoryContext;
return proc->proname;
}
-/* output a python traceback/exception via the postgresql elog
- * function. not pretty.
+/*
+ * Call PyErr_SetString with a vprint interface and translation support
*/
static void
PLy_exception_set(PyObject * exc, const char *fmt,...)
va_list ap;
va_start(ap, fmt);
- vsnprintf(buf, sizeof(buf), fmt, ap);
+ vsnprintf(buf, sizeof(buf), dgettext(TEXTDOMAIN, fmt), ap);
+ va_end(ap);
+
+ PyErr_SetString(exc, buf);
+}
+
+/*
+ * The same, pluralized.
+ */
+static void
+PLy_exception_set_plural(PyObject *exc,
+ const char *fmt_singular, const char *fmt_plural,
+ unsigned long n,...)
+{
+ char buf[1024];
+ va_list ap;
+
+ va_start(ap, n);
+ vsnprintf(buf, sizeof(buf),
+ dngettext(TEXTDOMAIN, fmt_singular, fmt_plural, n),
+ ap);
va_end(ap);
PyErr_SetString(exc, buf);
static void
PLy_elog(int elevel, const char *fmt,...)
{
- va_list ap;
- char *xmsg,
- *emsg;
+ char *xmsg;
int xlevel;
+ StringInfoData emsg;
xmsg = PLy_traceback(&xlevel);
- va_start(ap, fmt);
- emsg = PLy_vprintf(fmt, ap);
- va_end(ap);
+ initStringInfo(&emsg);
+ for (;;)
+ {
+ va_list ap;
+ bool success;
+
+ va_start(ap, fmt);
+ success = appendStringInfoVA(&emsg, dgettext(TEXTDOMAIN, fmt), ap);
+ va_end(ap);
+ if (success)
+ break;
+ enlargeStringInfo(&emsg, emsg.maxlen);
+ }
PG_TRY();
{
ereport(elevel,
- (errmsg("plpython: %s", emsg),
+ (errmsg("PL/Python: %s", emsg.data),
(xmsg) ? errdetail("%s", xmsg) : 0));
}
PG_CATCH();
{
- PLy_free(emsg);
+ pfree(emsg.data);
if (xmsg)
- PLy_free(xmsg);
+ pfree(xmsg);
PG_RE_THROW();
}
PG_END_TRY();
- PLy_free(emsg);
+ pfree(emsg.data);
if (xmsg)
- PLy_free(xmsg);
+ pfree(xmsg);
}
static char *
PyObject *eob,
*vob = NULL;
char *vstr,
- *estr,
- *xstr = NULL;
+ *estr;
+ StringInfoData xstr;
/*
* get the current exception
if (v && ((vob = PyObject_Str(v)) != NULL))
vstr = PyString_AsString(vob);
else
- vstr = "Unknown";
+ vstr = "unknown";
/*
* I'm not sure what to do if eob is NULL here -- we can't call PLy_elog
* recursion. I'm not even sure if eob could be NULL here -- would an
* Assert() be more appropriate?
*/
- estr = eob ? PyString_AsString(eob) : "Unknown Exception";
- xstr = PLy_printf("%s: %s", estr, vstr);
+ estr = eob ? PyString_AsString(eob) : "unrecognized exception";
+ initStringInfo(&xstr);
+ appendStringInfo(&xstr, "%s: %s", estr, vstr);
Py_DECREF(eob);
Py_XDECREF(vob);
*xlevel = ERROR;
Py_DECREF(e);
- return xstr;
-}
-
-static char *
-PLy_printf(const char *fmt,...)
-{
- va_list ap;
- char *emsg;
-
- va_start(ap, fmt);
- emsg = PLy_vprintf(fmt, ap);
- va_end(ap);
- return emsg;
-}
-
-static char *
-PLy_vprintf(const char *fmt, va_list ap)
-{
- size_t blen;
- int bchar,
- tries = 2;
- char *buf;
-
- blen = strlen(fmt) * 2;
- if (blen < 256)
- blen = 256;
- buf = PLy_malloc(blen * sizeof(char));
-
- while (1)
- {
- bchar = vsnprintf(buf, blen, fmt, ap);
- if (bchar > 0 && bchar < blen)
- return buf;
- if (tries-- <= 0)
- break;
- if (blen > 0)
- blen = bchar + 1;
- else
- blen *= 2;
- buf = PLy_realloc(buf, blen);
- }
- PLy_free(buf);
- return NULL;
+ return xstr.data;
}
/* python module code */
}
static void *
-PLy_realloc(void *optr, size_t bytes)
+PLy_malloc0(size_t bytes)
{
- void *nptr = realloc(optr, bytes);
+ void *ptr = PLy_malloc(bytes);
- if (nptr == NULL)
- ereport(FATAL,
- (errcode(ERRCODE_OUT_OF_MEMORY),
- errmsg("out of memory")));
- return nptr;
+ MemSet(ptr, 0, bytes);
+ return ptr;
}
static char *
projects / postgresql / blobdiff