* ENHANCEMENTS, OR MODIFICATIONS.
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/pl/plperl/plperl.c,v 1.23 2001/10/06 23:21:44 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/pl/plperl/plperl.c,v 1.24 2001/10/19 22:43:49 tgl Exp $
*
**********************************************************************/
+#include "postgres.h"
/* system stuff */
#include <stdio.h>
#include "tcop/tcopprot.h"
#include "utils/syscache.h"
+#include "catalog/pg_language.h"
#include "catalog/pg_proc.h"
#include "catalog/pg_type.h"
typedef struct plperl_proc_desc
{
char *proname;
+ TransactionId fn_xmin;
+ CommandId fn_cmin;
+ bool lanpltrusted;
FmgrInfo result_in_func;
Oid result_in_elem;
- int result_in_len;
int nargs;
FmgrInfo arg_out_func[FUNC_MAX_ARGS];
Oid arg_out_elem[FUNC_MAX_ARGS];
- int arg_out_len[FUNC_MAX_ARGS];
int arg_is_rel[FUNC_MAX_ARGS];
- bool lanpltrusted;
SV *reference;
} plperl_proc_desc;
-/**********************************************************************
- * The information we cache about prepared and saved plans
- **********************************************************************/
-typedef struct plperl_query_desc
-{
- char qname[20];
- void *plan;
- int nargs;
- Oid *argtypes;
- FmgrInfo *arginfuncs;
- Oid *argtypelems;
- Datum *argvalues;
- int *arglen;
-} plperl_query_desc;
-
-
/**********************************************************************
* Global data
**********************************************************************/
static PerlInterpreter *plperl_interp = NULL;
static HV *plperl_proc_hash = NULL;
-#if REALLYHAVEITONTHEBALL
-static Tcl_HashTable *plperl_query_hash = NULL;
-
-#endif
-
/**********************************************************************
* Forward declarations
**********************************************************************/
static Datum plperl_func_handler(PG_FUNCTION_ARGS);
+static plperl_proc_desc *compile_plperl_function(Oid fn_oid, bool is_trigger);
+
static SV *plperl_build_tuple_argument(HeapTuple tuple, TupleDesc tupdesc);
static void plperl_init_shared_libs(void);
-#ifdef REALLYHAVEITONTHEBALL
-static HeapTuple plperl_trigger_handler(PG_FUNCTION_ARGS);
-
-static int plperl_elog(ClientData cdata, Tcl_Interp *interp,
- int argc, char *argv[]);
-static int plperl_quote(ClientData cdata, Tcl_Interp *interp,
- int argc, char *argv[]);
-
-static int plperl_SPI_exec(ClientData cdata, Tcl_Interp *interp,
- int argc, char *argv[]);
-static int plperl_SPI_prepare(ClientData cdata, Tcl_Interp *interp,
- int argc, char *argv[]);
-static int plperl_SPI_execp(ClientData cdata, Tcl_Interp *interp,
- int argc, char *argv[]);
-
-static void plperl_set_tuple_values(Tcl_Interp *interp, char *arrayname,
- int tupno, HeapTuple tuple, TupleDesc tupdesc);
-
-#endif
-
/*
* This routine is a crock, and so is everyplace that calls it. The problem
/************************************************************
- * Destroy the existing safe interpreter
+ * Destroy the existing Perl interpreter
************************************************************/
if (plperl_interp != NULL)
{
}
/************************************************************
- * Free the prepared query hash table
- ************************************************************/
-
- /*
- * if (plperl_query_hash != NULL) { }
- */
-
- /************************************************************
- * Now recreate a new safe interpreter
+ * Now recreate a new Perl interpreter
************************************************************/
plperl_init_interp();
plperl_firstcall = 0;
- return;
}
/**********************************************************************
- * plperl_init_interp() - Create the safe Perl interpreter
+ * plperl_init_interp() - Create the Perl interpreter
**********************************************************************/
static void
plperl_init_interp(void)
/************************************************************
* Initialize the proc and query hash tables
- ************************* ***********************************/
+ ************************************************************/
plperl_proc_hash = newHV();
}
if (SPI_connect() != SPI_OK_CONNECT)
elog(ERROR, "plperl: cannot connect to SPI manager");
/************************************************************
- * Keep track about the nesting of Tcl-SPI-Tcl-... calls
+ * Keep track about the nesting of Perl-SPI-Perl-... calls
************************************************************/
plperl_call_level++;
tmp = DatumGetCString(FunctionCall3(&(desc->arg_out_func[i]),
fcinfo->arg[i],
ObjectIdGetDatum(desc->arg_out_elem[i]),
- Int32GetDatum(desc->arg_out_len[i])));
+ Int32GetDatum(-1)));
XPUSHs(sv_2mortal(newSVpv(tmp, 0)));
pfree(tmp);
}
static Datum
plperl_func_handler(PG_FUNCTION_ARGS)
{
- int i;
- char internal_proname[512];
- int proname_len;
plperl_proc_desc *prodesc;
SV *perlret;
Datum retval;
sigjmp_buf save_restart;
- /************************************************************
- * Build our internal proc name from the functions Oid
- ************************************************************/
- sprintf(internal_proname, "__PLPerl_proc_%u", fcinfo->flinfo->fn_oid);
- proname_len = strlen(internal_proname);
-
- /************************************************************
- * Lookup the internal proc name in the hashtable
- ************************************************************/
- if (!hv_exists(plperl_proc_hash, internal_proname, proname_len))
- {
- /************************************************************
- * If we haven't found it in the hashtable, we analyze
- * the functions arguments and returntype and store
- * the in-/out-functions in the prodesc block and create
- * a new hashtable entry for it.
- *
- * Then we load the procedure into the safe interpreter.
- ************************************************************/
- HeapTuple procTup;
- HeapTuple langTup;
- HeapTuple typeTup;
- Form_pg_proc procStruct;
- Form_pg_language langStruct;
- Form_pg_type typeStruct;
- char *proc_source;
-
- /************************************************************
- * Allocate a new procedure description block
- ************************************************************/
- prodesc = (plperl_proc_desc *) malloc(sizeof(plperl_proc_desc));
- prodesc->proname = malloc(strlen(internal_proname) + 1);
- strcpy(prodesc->proname, internal_proname);
-
-
- /************************************************************
- * Lookup the pg_proc tuple by Oid
- ************************************************************/
- procTup = SearchSysCache(PROCOID,
- ObjectIdGetDatum(fcinfo->flinfo->fn_oid),
- 0, 0, 0);
- if (!HeapTupleIsValid(procTup))
- {
- free(prodesc->proname);
- free(prodesc);
- elog(ERROR, "plperl: cache lookup for proc %u failed",
- fcinfo->flinfo->fn_oid);
- }
- procStruct = (Form_pg_proc) GETSTRUCT(procTup);
-
- /************************************************************
- * Lookup the pg_language tuple by Oid
- ************************************************************/
- langTup = SearchSysCache(LANGOID,
- ObjectIdGetDatum(procStruct->prolang),
- 0, 0, 0);
- if (!HeapTupleIsValid(langTup))
- {
- free(prodesc->proname);
- free(prodesc);
- elog(ERROR, "plperl: cache lookup for language %u failed",
- procStruct->prolang);
- }
- langStruct = (Form_pg_language) GETSTRUCT(langTup);
-
- prodesc->lanpltrusted = langStruct->lanpltrusted;
- ReleaseSysCache(langTup);
-
- /************************************************************
- * Get the required information for input conversion of the
- * return value.
- ************************************************************/
- typeTup = SearchSysCache(TYPEOID,
- ObjectIdGetDatum(procStruct->prorettype),
- 0, 0, 0);
- if (!HeapTupleIsValid(typeTup))
- {
- free(prodesc->proname);
- free(prodesc);
- if (!OidIsValid(procStruct->prorettype))
- elog(ERROR, "plperl functions cannot return type \"opaque\""
- "\n\texcept when used as triggers");
- else
- elog(ERROR, "plperl: cache lookup for return type %u failed",
- procStruct->prorettype);
- }
- typeStruct = (Form_pg_type) GETSTRUCT(typeTup);
-
- if (typeStruct->typrelid != InvalidOid)
- {
- free(prodesc->proname);
- free(prodesc);
- elog(ERROR, "plperl: return types of tuples not supported yet");
- }
-
- perm_fmgr_info(typeStruct->typinput, &(prodesc->result_in_func));
- prodesc->result_in_elem = (Oid) (typeStruct->typelem);
- prodesc->result_in_len = typeStruct->typlen;
-
- ReleaseSysCache(typeTup);
-
- /************************************************************
- * Get the required information for output conversion
- * of all procedure arguments
- ************************************************************/
- prodesc->nargs = procStruct->pronargs;
- for (i = 0; i < prodesc->nargs; i++)
- {
- typeTup = SearchSysCache(TYPEOID,
- ObjectIdGetDatum(procStruct->proargtypes[i]),
- 0, 0, 0);
- if (!HeapTupleIsValid(typeTup))
- {
- free(prodesc->proname);
- free(prodesc);
- if (!OidIsValid(procStruct->proargtypes[i]))
- elog(ERROR, "plperl functions cannot take type \"opaque\"");
- else
- elog(ERROR, "plperl: cache lookup for argument type %u failed",
- procStruct->proargtypes[i]);
- }
- typeStruct = (Form_pg_type) GETSTRUCT(typeTup);
-
- if (typeStruct->typrelid != InvalidOid)
- prodesc->arg_is_rel[i] = 1;
- else
- prodesc->arg_is_rel[i] = 0;
-
- perm_fmgr_info(typeStruct->typoutput, &(prodesc->arg_out_func[i]));
- prodesc->arg_out_elem[i] = (Oid) (typeStruct->typelem);
- prodesc->arg_out_len[i] = typeStruct->typlen;
- ReleaseSysCache(typeTup);
- }
-
- /************************************************************
- * create the text of the anonymous subroutine.
- * we do not use a named subroutine so that we can call directly
- * through the reference.
- *
- ************************************************************/
- proc_source = DatumGetCString(DirectFunctionCall1(textout,
- PointerGetDatum(&procStruct->prosrc)));
-
- /************************************************************
- * Create the procedure in the interpreter
- ************************************************************/
- prodesc->reference = plperl_create_sub(proc_source, prodesc->lanpltrusted);
- pfree(proc_source);
- if (!prodesc->reference)
- {
- free(prodesc->proname);
- free(prodesc);
- elog(ERROR, "plperl: cannot create internal procedure %s",
- internal_proname);
- }
-
- /************************************************************
- * Add the proc description block to the hashtable
- ************************************************************/
- hv_store(plperl_proc_hash, internal_proname, proname_len,
- newSViv((IV) prodesc), 0);
-
- ReleaseSysCache(procTup);
- }
- else
- {
- /************************************************************
- * Found the proc description block in the hashtable
- ************************************************************/
- prodesc = (plperl_proc_desc *) SvIV(*hv_fetch(plperl_proc_hash,
- internal_proname, proname_len, 0));
- }
-
+ /* Find or compile the function */
+ prodesc = compile_plperl_function(fcinfo->flinfo->fn_oid, false);
+ /* Set up error handling */
memcpy(&save_restart, &Warn_restart, sizeof(save_restart));
if (sigsetjmp(Warn_restart, 1) != 0)
siglongjmp(Warn_restart, 1);
}
-
/************************************************************
* Call the Perl function
************************************************************/
retval = FunctionCall3(&prodesc->result_in_func,
PointerGetDatum(SvPV(perlret, PL_na)),
ObjectIdGetDatum(prodesc->result_in_elem),
- Int32GetDatum(prodesc->result_in_len));
+ Int32GetDatum(-1));
}
SvREFCNT_dec(perlret);
}
-#ifdef REALLYHAVEITONTHEBALL
/**********************************************************************
- * plperl_trigger_handler() - Handler for trigger calls
+ * compile_plperl_function - compile (or hopefully just look up) function
**********************************************************************/
-static HeapTuple
-plperl_trigger_handler(PG_FUNCTION_ARGS)
+static plperl_proc_desc *
+compile_plperl_function(Oid fn_oid, bool is_trigger)
{
- TriggerData *trigdata = (TriggerData *) fcinfo->context;
- char internal_proname[512];
- char *stroid;
- Tcl_HashEntry *hashent;
- int hashnew;
- plperl_proc_desc *prodesc;
- TupleDesc tupdesc;
- HeapTuple rettup;
- Tcl_DString tcl_cmd;
- Tcl_DString tcl_trigtup;
- Tcl_DString tcl_newtup;
- int tcl_rc;
+ HeapTuple procTup;
+ Form_pg_proc procStruct;
+ char internal_proname[64];
+ int proname_len;
+ plperl_proc_desc *prodesc = NULL;
int i;
- int *modattrs;
- Datum *modvalues;
- char *modnulls;
-
- int ret_numvals;
- char **ret_values;
-
- sigjmp_buf save_restart;
+ /* We'll need the pg_proc tuple in any case... */
+ procTup = SearchSysCache(PROCOID,
+ ObjectIdGetDatum(fn_oid),
+ 0, 0, 0);
+ if (!HeapTupleIsValid(procTup))
+ elog(ERROR, "plperl: cache lookup for proc %u failed", fn_oid);
+ procStruct = (Form_pg_proc) GETSTRUCT(procTup);
/************************************************************
* Build our internal proc name from the functions Oid
************************************************************/
- sprintf(internal_proname, "__PLPerl_proc_%u", fcinfo->flinfo->fn_oid);
+ if (!is_trigger)
+ sprintf(internal_proname, "__PLPerl_proc_%u", fn_oid);
+ else
+ sprintf(internal_proname, "__PLPerl_proc_%u_trigger", fn_oid);
+ proname_len = strlen(internal_proname);
/************************************************************
* Lookup the internal proc name in the hashtable
************************************************************/
- hashent = Tcl_FindHashEntry(plperl_proc_hash, internal_proname);
- if (hashent == NULL)
+ if (hv_exists(plperl_proc_hash, internal_proname, proname_len))
{
+ bool uptodate;
+
+ prodesc = (plperl_proc_desc *) SvIV(*hv_fetch(plperl_proc_hash,
+ internal_proname, proname_len, 0));
+
/************************************************************
- * If we haven't found it in the hashtable,
- * we load the procedure into the safe interpreter.
+ * If it's present, must check whether it's still up to date.
+ * This is needed because CREATE OR REPLACE FUNCTION can modify the
+ * function's pg_proc entry without changing its OID.
************************************************************/
- Tcl_DString proc_internal_def;
- Tcl_DString proc_internal_body;
- HeapTuple procTup;
- Form_pg_proc procStruct;
+ uptodate = (prodesc->fn_xmin == procTup->t_data->t_xmin &&
+ prodesc->fn_cmin == procTup->t_data->t_cmin);
+
+ if (!uptodate)
+ {
+ /* need we delete old entry? */
+ prodesc = NULL;
+ }
+ }
+
+ /************************************************************
+ * If we haven't found it in the hashtable, we analyze
+ * the functions arguments and returntype and store
+ * the in-/out-functions in the prodesc block and create
+ * a new hashtable entry for it.
+ *
+ * Then we load the procedure into the Perl interpreter.
+ ************************************************************/
+ if (prodesc == NULL)
+ {
+ HeapTuple langTup;
+ HeapTuple typeTup;
+ Form_pg_language langStruct;
+ Form_pg_type typeStruct;
char *proc_source;
/************************************************************
* Allocate a new procedure description block
************************************************************/
prodesc = (plperl_proc_desc *) malloc(sizeof(plperl_proc_desc));
- memset(prodesc, 0, sizeof(plperl_proc_desc));
- prodesc->proname = malloc(strlen(internal_proname) + 1);
- strcpy(prodesc->proname, internal_proname);
+ if (prodesc == NULL)
+ elog(ERROR, "plperl: out of memory");
+ MemSet(prodesc, 0, sizeof(plperl_proc_desc));
+ prodesc->proname = strdup(internal_proname);
+ prodesc->fn_xmin = procTup->t_data->t_xmin;
+ prodesc->fn_cmin = procTup->t_data->t_cmin;
/************************************************************
- * Lookup the pg_proc tuple by Oid
+ * Lookup the pg_language tuple by Oid
************************************************************/
- procTup = SearchSysCache(PROCOID,
- ObjectIdGetDatum(fcinfo->flinfo->fn_oid),
+ langTup = SearchSysCache(LANGOID,
+ ObjectIdGetDatum(procStruct->prolang),
0, 0, 0);
- if (!HeapTupleIsValid(procTup))
+ if (!HeapTupleIsValid(langTup))
{
free(prodesc->proname);
free(prodesc);
- elog(ERROR, "plperl: cache lookup for proc %u failed",
- fcinfo->flinfo->fn_oid);
+ elog(ERROR, "plperl: cache lookup for language %u failed",
+ procStruct->prolang);
}
- procStruct = (Form_pg_proc) GETSTRUCT(procTup);
+ langStruct = (Form_pg_language) GETSTRUCT(langTup);
+ prodesc->lanpltrusted = langStruct->lanpltrusted;
+ ReleaseSysCache(langTup);
/************************************************************
- * Create the tcl command to define the internal
- * procedure
+ * Get the required information for input conversion of the
+ * return value.
************************************************************/
- Tcl_DStringInit(&proc_internal_def);
- Tcl_DStringInit(&proc_internal_body);
- Tcl_DStringAppendElement(&proc_internal_def, "proc");
- Tcl_DStringAppendElement(&proc_internal_def, internal_proname);
- Tcl_DStringAppendElement(&proc_internal_def,
- "TG_name TG_relid TG_relatts TG_when TG_level TG_op __PLTcl_Tup_NEW __PLTcl_Tup_OLD args");
+ if (!is_trigger)
+ {
+ typeTup = SearchSysCache(TYPEOID,
+ ObjectIdGetDatum(procStruct->prorettype),
+ 0, 0, 0);
+ if (!HeapTupleIsValid(typeTup))
+ {
+ free(prodesc->proname);
+ free(prodesc);
+ if (!OidIsValid(procStruct->prorettype))
+ elog(ERROR, "plperl functions cannot return type \"opaque\""
+ "\n\texcept when used as triggers");
+ else
+ elog(ERROR, "plperl: cache lookup for return type %u failed",
+ procStruct->prorettype);
+ }
+ typeStruct = (Form_pg_type) GETSTRUCT(typeTup);
+
+ if (typeStruct->typrelid != InvalidOid)
+ {
+ free(prodesc->proname);
+ free(prodesc);
+ elog(ERROR, "plperl: return types of tuples not supported yet");
+ }
+
+ perm_fmgr_info(typeStruct->typinput, &(prodesc->result_in_func));
+ prodesc->result_in_elem = typeStruct->typelem;
+
+ ReleaseSysCache(typeTup);
+ }
/************************************************************
- * prefix procedure body with
- * upvar #0 <internal_procname> GD
- * and with appropriate setting of NEW, OLD,
- * and the arguments as numerical variables.
+ * Get the required information for output conversion
+ * of all procedure arguments
************************************************************/
- Tcl_DStringAppend(&proc_internal_body, "upvar #0 ", -1);
- Tcl_DStringAppend(&proc_internal_body, internal_proname, -1);
- Tcl_DStringAppend(&proc_internal_body, " GD\n", -1);
-
- Tcl_DStringAppend(&proc_internal_body,
- "array set NEW $__PLTcl_Tup_NEW\n", -1);
- Tcl_DStringAppend(&proc_internal_body,
- "array set OLD $__PLTcl_Tup_OLD\n", -1);
-
- Tcl_DStringAppend(&proc_internal_body,
- "set i 0\n"
- "set v 0\n"
- "foreach v $args {\n"
- " incr i\n"
- " set $i $v\n"
- "}\n"
- "unset i v\n\n", -1);
+ if (!is_trigger)
+ {
+ prodesc->nargs = procStruct->pronargs;
+ for (i = 0; i < prodesc->nargs; i++)
+ {
+ typeTup = SearchSysCache(TYPEOID,
+ ObjectIdGetDatum(procStruct->proargtypes[i]),
+ 0, 0, 0);
+ if (!HeapTupleIsValid(typeTup))
+ {
+ free(prodesc->proname);
+ free(prodesc);
+ if (!OidIsValid(procStruct->proargtypes[i]))
+ elog(ERROR, "plperl functions cannot take type \"opaque\"");
+ else
+ elog(ERROR, "plperl: cache lookup for argument type %u failed",
+ procStruct->proargtypes[i]);
+ }
+ typeStruct = (Form_pg_type) GETSTRUCT(typeTup);
+
+ if (typeStruct->typrelid != InvalidOid)
+ prodesc->arg_is_rel[i] = 1;
+ else
+ prodesc->arg_is_rel[i] = 0;
+
+ perm_fmgr_info(typeStruct->typoutput, &(prodesc->arg_out_func[i]));
+ prodesc->arg_out_elem[i] = typeStruct->typelem;
+ ReleaseSysCache(typeTup);
+ }
+ }
+ /************************************************************
+ * create the text of the anonymous subroutine.
+ * we do not use a named subroutine so that we can call directly
+ * through the reference.
+ *
+ ************************************************************/
proc_source = DatumGetCString(DirectFunctionCall1(textout,
PointerGetDatum(&procStruct->prosrc)));
- Tcl_DStringAppend(&proc_internal_body, proc_source, -1);
- pfree(proc_source);
- Tcl_DStringAppendElement(&proc_internal_def,
- Tcl_DStringValue(&proc_internal_body));
- Tcl_DStringFree(&proc_internal_body);
/************************************************************
- * Create the procedure in the safe interpreter
+ * Create the procedure in the interpreter
************************************************************/
- tcl_rc = Tcl_GlobalEval(plperl_safe_interp,
- Tcl_DStringValue(&proc_internal_def));
- Tcl_DStringFree(&proc_internal_def);
- if (tcl_rc != TCL_OK)
+ prodesc->reference = plperl_create_sub(proc_source, prodesc->lanpltrusted);
+ pfree(proc_source);
+ if (!prodesc->reference)
{
free(prodesc->proname);
free(prodesc);
- elog(ERROR, "plperl: cannot create internal procedure %s - %s",
- internal_proname, plperl_safe_interp->result);
+ elog(ERROR, "plperl: cannot create internal procedure %s",
+ internal_proname);
}
/************************************************************
* Add the proc description block to the hashtable
************************************************************/
- hashent = Tcl_CreateHashEntry(plperl_proc_hash,
- prodesc->proname, &hashnew);
- Tcl_SetHashValue(hashent, (ClientData) prodesc);
-
- ReleaseSysCache(procTup);
- }
- else
- {
- /************************************************************
- * Found the proc description block in the hashtable
- ************************************************************/
- prodesc = (plperl_proc_desc *) Tcl_GetHashValue(hashent);
- }
-
- tupdesc = trigdata->tg_relation->rd_att;
-
- /************************************************************
- * Create the tcl command to call the internal
- * proc in the safe interpreter
- ************************************************************/
- Tcl_DStringInit(&tcl_cmd);
- Tcl_DStringInit(&tcl_trigtup);
- Tcl_DStringInit(&tcl_newtup);
-
- /************************************************************
- * We call external functions below - care for elog(ERROR)
- ************************************************************/
- memcpy(&save_restart, &Warn_restart, sizeof(save_restart));
- if (sigsetjmp(Warn_restart, 1) != 0)
- {
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
- Tcl_DStringFree(&tcl_cmd);
- Tcl_DStringFree(&tcl_trigtup);
- Tcl_DStringFree(&tcl_newtup);
- plperl_restart_in_progress = 1;
- if (--plperl_call_level == 0)
- plperl_restart_in_progress = 0;
- siglongjmp(Warn_restart, 1);
+ hv_store(plperl_proc_hash, internal_proname, proname_len,
+ newSViv((IV) prodesc), 0);
}
- /* The procedure name */
- Tcl_DStringAppendElement(&tcl_cmd, internal_proname);
-
- /* The trigger name for argument TG_name */
- Tcl_DStringAppendElement(&tcl_cmd, trigdata->tg_trigger->tgname);
-
- /* The oid of the trigger relation for argument TG_relid */
- stroid = DatumGetCString(DirectFunctionCall1(oidout,
- ObjectIdGetDatum(trigdata->tg_relation->rd_id)));
- Tcl_DStringAppendElement(&tcl_cmd, stroid);
- pfree(stroid);
-
- /* A list of attribute names for argument TG_relatts */
- Tcl_DStringAppendElement(&tcl_trigtup, "");
- for (i = 0; i < tupdesc->natts; i++)
- Tcl_DStringAppendElement(&tcl_trigtup, tupdesc->attrs[i]->attname.data);
- Tcl_DStringAppendElement(&tcl_cmd, Tcl_DStringValue(&tcl_trigtup));
- Tcl_DStringFree(&tcl_trigtup);
- Tcl_DStringInit(&tcl_trigtup);
-
- /* The when part of the event for TG_when */
- if (TRIGGER_FIRED_BEFORE(trigdata->tg_event))
- Tcl_DStringAppendElement(&tcl_cmd, "BEFORE");
- else if (TRIGGER_FIRED_AFTER(trigdata->tg_event))
- Tcl_DStringAppendElement(&tcl_cmd, "AFTER");
- else
- Tcl_DStringAppendElement(&tcl_cmd, "UNKNOWN");
+ ReleaseSysCache(procTup);
- /* The level part of the event for TG_level */
- if (TRIGGER_FIRED_FOR_ROW(trigdata->tg_event))
- Tcl_DStringAppendElement(&tcl_cmd, "ROW");
- else if (TRIGGER_FIRED_FOR_STATEMENT(trigdata->tg_event))
- Tcl_DStringAppendElement(&tcl_cmd, "STATEMENT");
- else
- Tcl_DStringAppendElement(&tcl_cmd, "UNKNOWN");
+ return prodesc;
+}
- /* Build the data list for the trigtuple */
- plperl_build_tuple_argument(trigdata->tg_trigtuple,
- tupdesc, &tcl_trigtup);
- /*
- * Now the command part of the event for TG_op and data for NEW and
- * OLD
- */
- if (TRIGGER_FIRED_BY_INSERT(trigdata->tg_event))
- {
- Tcl_DStringAppendElement(&tcl_cmd, "INSERT");
-
- Tcl_DStringAppendElement(&tcl_cmd, Tcl_DStringValue(&tcl_trigtup));
- Tcl_DStringAppendElement(&tcl_cmd, "");
-
- rettup = trigdata->tg_trigtuple;
- }
- else if (TRIGGER_FIRED_BY_DELETE(trigdata->tg_event))
- {
- Tcl_DStringAppendElement(&tcl_cmd, "DELETE");
-
- Tcl_DStringAppendElement(&tcl_cmd, "");
- Tcl_DStringAppendElement(&tcl_cmd, Tcl_DStringValue(&tcl_trigtup));
-
- rettup = trigdata->tg_trigtuple;
- }
- else if (TRIGGER_FIRED_BY_UPDATE(trigdata->tg_event))
- {
- Tcl_DStringAppendElement(&tcl_cmd, "UPDATE");
-
- plperl_build_tuple_argument(trigdata->tg_newtuple,
- tupdesc, &tcl_newtup);
-
- Tcl_DStringAppendElement(&tcl_cmd, Tcl_DStringValue(&tcl_newtup));
- Tcl_DStringAppendElement(&tcl_cmd, Tcl_DStringValue(&tcl_trigtup));
-
- rettup = trigdata->tg_newtuple;
- }
- else
- {
- Tcl_DStringAppendElement(&tcl_cmd, "UNKNOWN");
-
- Tcl_DStringAppendElement(&tcl_cmd, Tcl_DStringValue(&tcl_trigtup));
- Tcl_DStringAppendElement(&tcl_cmd, Tcl_DStringValue(&tcl_trigtup));
-
- rettup = trigdata->tg_trigtuple;
- }
-
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
- Tcl_DStringFree(&tcl_trigtup);
- Tcl_DStringFree(&tcl_newtup);
-
- /************************************************************
- * Finally append the arguments from CREATE TRIGGER
- ************************************************************/
- for (i = 0; i < trigdata->tg_trigger->tgnargs; i++)
- Tcl_DStringAppendElement(&tcl_cmd, trigdata->tg_trigger->tgargs[i]);
-
- /************************************************************
- * Call the Tcl function
- ************************************************************/
- tcl_rc = Tcl_GlobalEval(plperl_safe_interp, Tcl_DStringValue(&tcl_cmd));
- Tcl_DStringFree(&tcl_cmd);
-
- /************************************************************
- * Check the return code from Tcl and handle
- * our special restart mechanism to get rid
- * of all nested call levels on transaction
- * abort.
- ************************************************************/
- if (tcl_rc == TCL_ERROR || plperl_restart_in_progress)
- {
- if (!plperl_restart_in_progress)
- {
- plperl_restart_in_progress = 1;
- if (--plperl_call_level == 0)
- plperl_restart_in_progress = 0;
- elog(ERROR, "plperl: %s", plperl_safe_interp->result);
- }
- if (--plperl_call_level == 0)
- plperl_restart_in_progress = 0;
- siglongjmp(Warn_restart, 1);
- }
-
- switch (tcl_rc)
- {
- case TCL_OK:
- break;
-
- default:
- elog(ERROR, "plperl: unsupported TCL return code %d", tcl_rc);
- }
-
- /************************************************************
- * The return value from the procedure might be one of
- * the magic strings OK or SKIP or a list from array get
- ************************************************************/
- if (SPI_finish() != SPI_OK_FINISH)
- elog(ERROR, "plperl: SPI_finish() failed");
-
- if (strcmp(plperl_safe_interp->result, "OK") == 0)
- return rettup;
- if (strcmp(plperl_safe_interp->result, "SKIP") == 0)
- {
- return (HeapTuple) NULL;;
- }
-
- /************************************************************
- * Convert the result value from the safe interpreter
- * and setup structures for SPI_modifytuple();
- ************************************************************/
- if (Tcl_SplitList(plperl_safe_interp, plperl_safe_interp->result,
- &ret_numvals, &ret_values) != TCL_OK)
- {
- elog(NOTICE, "plperl: cannot split return value from trigger");
- elog(ERROR, "plperl: %s", plperl_safe_interp->result);
- }
-
- if (ret_numvals % 2 != 0)
- {
- ckfree(ret_values);
- elog(ERROR, "plperl: invalid return list from trigger - must have even # of elements");
- }
-
- modattrs = (int *) palloc(tupdesc->natts * sizeof(int));
- modvalues = (Datum *) palloc(tupdesc->natts * sizeof(Datum));
- for (i = 0; i < tupdesc->natts; i++)
- {
- modattrs[i] = i + 1;
- modvalues[i] = (Datum) NULL;
- }
-
- modnulls = palloc(tupdesc->natts + 1);
- memset(modnulls, 'n', tupdesc->natts);
- modnulls[tupdesc->natts] = '\0';
-
- /************************************************************
- * Care for possible elog(ERROR)'s below
- ************************************************************/
- if (sigsetjmp(Warn_restart, 1) != 0)
- {
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
- ckfree(ret_values);
- plperl_restart_in_progress = 1;
- if (--plperl_call_level == 0)
- plperl_restart_in_progress = 0;
- siglongjmp(Warn_restart, 1);
- }
-
- i = 0;
- while (i < ret_numvals)
- {
- int attnum;
- HeapTuple typeTup;
- Oid typinput;
- Oid typelem;
- FmgrInfo finfo;
-
- /************************************************************
- * Ignore pseudo elements with a dot name
- ************************************************************/
- if (*(ret_values[i]) == '.')
- {
- i += 2;
- continue;
- }
-
- /************************************************************
- * Get the attribute number
- ************************************************************/
- attnum = SPI_fnumber(tupdesc, ret_values[i++]);
- if (attnum == SPI_ERROR_NOATTRIBUTE)
- elog(ERROR, "plperl: invalid attribute '%s'", ret_values[--i]);
-
- /************************************************************
- * Lookup the attribute type in the syscache
- * for the input function
- ************************************************************/
- typeTup = SearchSysCache(TYPEOID,
- ObjectIdGetDatum(tupdesc->attrs[attnum - 1]->atttypid),
- 0, 0, 0);
- if (!HeapTupleIsValid(typeTup))
- {
- elog(ERROR, "plperl: Cache lookup for attribute '%s' type %u failed",
- ret_values[--i],
- tupdesc->attrs[attnum - 1]->atttypid);
- }
- typinput = (Oid) (((Form_pg_type) GETSTRUCT(typeTup))->typinput);
- typelem = (Oid) (((Form_pg_type) GETSTRUCT(typeTup))->typelem);
- ReleaseSysCache(typeTup);
-
- /************************************************************
- * Set the attribute to NOT NULL and convert the contents
- ************************************************************/
- modnulls[attnum - 1] = ' ';
- fmgr_info(typinput, &finfo);
- modvalues[attnum - 1] =
- FunctionCall3(&finfo,
- CStringGetDatum(ret_values[i++]),
- ObjectIdGetDatum(typelem),
- Int32GetDatum(tupdesc->attrs[attnum - 1]->atttypmod));
- }
-
-
- rettup = SPI_modifytuple(trigdata->tg_relation, rettup, tupdesc->natts,
- modattrs, modvalues, modnulls);
-
- pfree(modattrs);
- pfree(modvalues);
- pfree(modnulls);
-
- if (rettup == NULL)
- elog(ERROR, "plperl: SPI_modifytuple() failed - RC = %d\n", SPI_result);
-
- ckfree(ret_values);
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
-
- return rettup;
-}
-
-
-/**********************************************************************
- * plperl_elog() - elog() support for PLTcl
- **********************************************************************/
-static int
-plperl_elog(ClientData cdata, Tcl_Interp *interp,
- int argc, char *argv[])
-{
- int level;
- sigjmp_buf save_restart;
-
- /************************************************************
- * Suppress messages during the restart process
- ************************************************************/
- if (plperl_restart_in_progress)
- return TCL_ERROR;
-
- /************************************************************
- * Catch the restart longjmp and begin a controlled
- * return though all interpreter levels if it happens
- ************************************************************/
- memcpy(&save_restart, &Warn_restart, sizeof(save_restart));
- if (sigsetjmp(Warn_restart, 1) != 0)
- {
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
- plperl_restart_in_progress = 1;
- return TCL_ERROR;
- }
-
- if (argc != 3)
- {
- Tcl_SetResult(interp, "syntax error - 'elog level msg'",
- TCL_VOLATILE);
- return TCL_ERROR;
- }
-
- if (strcmp(argv[1], "NOTICE") == 0)
- level = NOTICE;
- else if (strcmp(argv[1], "WARN") == 0)
- level = ERROR;
- else if (strcmp(argv[1], "ERROR") == 0)
- level = ERROR;
- else if (strcmp(argv[1], "FATAL") == 0)
- level = FATAL;
- else if (strcmp(argv[1], "DEBUG") == 0)
- level = DEBUG;
- else
- {
- Tcl_AppendResult(interp, "Unknown elog level '", argv[1],
- "'", NULL);
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
- return TCL_ERROR;
- }
-
- /************************************************************
- * Call elog(), restore the original restart address
- * and return to the caller (if not catched)
- ************************************************************/
- elog(level, argv[2]);
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
- return TCL_OK;
-}
-
-
-/**********************************************************************
- * plperl_quote() - quote literal strings that are to
- * be used in SPI_exec query strings
- **********************************************************************/
-static int
-plperl_quote(ClientData cdata, Tcl_Interp *interp,
- int argc, char *argv[])
-{
- char *tmp;
- char *cp1;
- char *cp2;
-
- /************************************************************
- * Check call syntax
- ************************************************************/
- if (argc != 2)
- {
- Tcl_SetResult(interp, "syntax error - 'quote string'", TCL_VOLATILE);
- return TCL_ERROR;
- }
-
- /************************************************************
- * Allocate space for the maximum the string can
- * grow to and initialize pointers
- ************************************************************/
- tmp = palloc(strlen(argv[1]) * 2 + 1);
- cp1 = argv[1];
- cp2 = tmp;
-
- /************************************************************
- * Walk through string and double every quote and backslash
- ************************************************************/
- while (*cp1)
- {
- if (*cp1 == '\'')
- *cp2++ = '\'';
- else
- {
- if (*cp1 == '\\')
- *cp2++ = '\\';
- }
- *cp2++ = *cp1++;
- }
-
- /************************************************************
- * Terminate the string and set it as result
- ************************************************************/
- *cp2 = '\0';
- Tcl_SetResult(interp, tmp, TCL_VOLATILE);
- pfree(tmp);
- return TCL_OK;
-}
-
-
-/**********************************************************************
- * plperl_SPI_exec() - The builtin SPI_exec command
- * for the safe interpreter
- **********************************************************************/
-static int
-plperl_SPI_exec(ClientData cdata, Tcl_Interp *interp,
- int argc, char *argv[])
-{
- int spi_rc;
- char buf[64];
- int count = 0;
- char *arrayname = NULL;
- int query_idx;
- int i;
- int loop_rc;
- int ntuples;
- HeapTuple *tuples;
- TupleDesc tupdesc = NULL;
- sigjmp_buf save_restart;
-
- char *usage = "syntax error - 'SPI_exec "
- "?-count n? "
- "?-array name? query ?loop body?";
-
- /************************************************************
- * Don't do anything if we are already in restart mode
- ************************************************************/
- if (plperl_restart_in_progress)
- return TCL_ERROR;
-
- /************************************************************
- * Check the call syntax and get the count option
- ************************************************************/
- if (argc < 2)
- {
- Tcl_SetResult(interp, usage, TCL_VOLATILE);
- return TCL_ERROR;
- }
-
- i = 1;
- while (i < argc)
- {
- if (strcmp(argv[i], "-array") == 0)
- {
- if (++i >= argc)
- {
- Tcl_SetResult(interp, usage, TCL_VOLATILE);
- return TCL_ERROR;
- }
- arrayname = argv[i++];
- continue;
- }
-
- if (strcmp(argv[i], "-count") == 0)
- {
- if (++i >= argc)
- {
- Tcl_SetResult(interp, usage, TCL_VOLATILE);
- return TCL_ERROR;
- }
- if (Tcl_GetInt(interp, argv[i++], &count) != TCL_OK)
- return TCL_ERROR;
- continue;
- }
-
- break;
- }
-
- query_idx = i;
- if (query_idx >= argc)
- {
- Tcl_SetResult(interp, usage, TCL_VOLATILE);
- return TCL_ERROR;
- }
-
- /************************************************************
- * Prepare to start a controlled return through all
- * interpreter levels on transaction abort
- ************************************************************/
- memcpy(&save_restart, &Warn_restart, sizeof(save_restart));
- if (sigsetjmp(Warn_restart, 1) != 0)
- {
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
- plperl_restart_in_progress = 1;
- Tcl_SetResult(interp, "Transaction abort", TCL_VOLATILE);
- return TCL_ERROR;
- }
-
- /************************************************************
- * Execute the query and handle return codes
- ************************************************************/
- spi_rc = SPI_exec(argv[query_idx], count);
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
-
- switch (spi_rc)
- {
- case SPI_OK_UTILITY:
- Tcl_SetResult(interp, "0", TCL_VOLATILE);
- return TCL_OK;
-
- case SPI_OK_SELINTO:
- case SPI_OK_INSERT:
- case SPI_OK_DELETE:
- case SPI_OK_UPDATE:
- sprintf(buf, "%d", SPI_processed);
- Tcl_SetResult(interp, buf, TCL_VOLATILE);
- return TCL_OK;
-
- case SPI_OK_SELECT:
- break;
-
- case SPI_ERROR_ARGUMENT:
- Tcl_SetResult(interp,
- "plperl: SPI_exec() failed - SPI_ERROR_ARGUMENT",
- TCL_VOLATILE);
- return TCL_ERROR;
-
- case SPI_ERROR_UNCONNECTED:
- Tcl_SetResult(interp,
- "plperl: SPI_exec() failed - SPI_ERROR_UNCONNECTED",
- TCL_VOLATILE);
- return TCL_ERROR;
-
- case SPI_ERROR_COPY:
- Tcl_SetResult(interp,
- "plperl: SPI_exec() failed - SPI_ERROR_COPY",
- TCL_VOLATILE);
- return TCL_ERROR;
-
- case SPI_ERROR_CURSOR:
- Tcl_SetResult(interp,
- "plperl: SPI_exec() failed - SPI_ERROR_CURSOR",
- TCL_VOLATILE);
- return TCL_ERROR;
-
- case SPI_ERROR_TRANSACTION:
- Tcl_SetResult(interp,
- "plperl: SPI_exec() failed - SPI_ERROR_TRANSACTION",
- TCL_VOLATILE);
- return TCL_ERROR;
-
- case SPI_ERROR_OPUNKNOWN:
- Tcl_SetResult(interp,
- "plperl: SPI_exec() failed - SPI_ERROR_OPUNKNOWN",
- TCL_VOLATILE);
- return TCL_ERROR;
-
- default:
- sprintf(buf, "%d", spi_rc);
- Tcl_AppendResult(interp, "plperl: SPI_exec() failed - ",
- "unknown RC ", buf, NULL);
- return TCL_ERROR;
- }
-
- /************************************************************
- * Only SELECT queries fall through to here - remember the
- * tuples we got
- ************************************************************/
-
- ntuples = SPI_processed;
- if (ntuples > 0)
- {
- tuples = SPI_tuptable->vals;
- tupdesc = SPI_tuptable->tupdesc;
- }
-
- /************************************************************
- * Again prepare for elog(ERROR)
- ************************************************************/
- if (sigsetjmp(Warn_restart, 1) != 0)
- {
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
- plperl_restart_in_progress = 1;
- Tcl_SetResult(interp, "Transaction abort", TCL_VOLATILE);
- return TCL_ERROR;
- }
-
- /************************************************************
- * If there is no loop body given, just set the variables
- * from the first tuple (if any) and return the number of
- * tuples selected
- ************************************************************/
- if (argc == query_idx + 1)
- {
- if (ntuples > 0)
- plperl_set_tuple_values(interp, arrayname, 0, tuples[0], tupdesc);
- sprintf(buf, "%d", ntuples);
- Tcl_SetResult(interp, buf, TCL_VOLATILE);
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
- return TCL_OK;
- }
-
- /************************************************************
- * There is a loop body - process all tuples and evaluate
- * the body on each
- ************************************************************/
- query_idx++;
- for (i = 0; i < ntuples; i++)
- {
- plperl_set_tuple_values(interp, arrayname, i, tuples[i], tupdesc);
-
- loop_rc = Tcl_Eval(interp, argv[query_idx]);
-
- if (loop_rc == TCL_OK)
- continue;
- if (loop_rc == TCL_CONTINUE)
- continue;
- if (loop_rc == TCL_RETURN)
- {
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
- return TCL_RETURN;
- }
- if (loop_rc == TCL_BREAK)
- break;
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
- return TCL_ERROR;
- }
-
- /************************************************************
- * Finally return the number of tuples
- ************************************************************/
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
- sprintf(buf, "%d", ntuples);
- Tcl_SetResult(interp, buf, TCL_VOLATILE);
- return TCL_OK;
-}
-
-
-/**********************************************************************
- * plperl_SPI_prepare() - Builtin support for prepared plans
- * The Tcl command SPI_prepare
- * allways saves the plan using
- * SPI_saveplan and returns a key for
- * access. There is no chance to prepare
- * and not save the plan currently.
- **********************************************************************/
-static int
-plperl_SPI_prepare(ClientData cdata, Tcl_Interp *interp,
- int argc, char *argv[])
-{
- int nargs;
- char **args;
- plperl_query_desc *qdesc;
- void *plan;
- int i;
- HeapTuple typeTup;
- Tcl_HashEntry *hashent;
- int hashnew;
- sigjmp_buf save_restart;
-
- /************************************************************
- * Don't do anything if we are already in restart mode
- ************************************************************/
- if (plperl_restart_in_progress)
- return TCL_ERROR;
-
- /************************************************************
- * Check the call syntax
- ************************************************************/
- if (argc != 3)
- {
- Tcl_SetResult(interp, "syntax error - 'SPI_prepare query argtypes'",
- TCL_VOLATILE);
- return TCL_ERROR;
- }
-
- /************************************************************
- * Split the argument type list
- ************************************************************/
- if (Tcl_SplitList(interp, argv[2], &nargs, &args) != TCL_OK)
- return TCL_ERROR;
-
- /************************************************************
- * Allocate the new querydesc structure
- ************************************************************/
- qdesc = (plperl_query_desc *) malloc(sizeof(plperl_query_desc));
- sprintf(qdesc->qname, "%lx", (long) qdesc);
- qdesc->nargs = nargs;
- qdesc->argtypes = (Oid *) malloc(nargs * sizeof(Oid));
- qdesc->arginfuncs = (FmgrInfo *) malloc(nargs * sizeof(FmgrInfo));
- qdesc->argtypelems = (Oid *) malloc(nargs * sizeof(Oid));
- qdesc->argvalues = (Datum *) malloc(nargs * sizeof(Datum));
- qdesc->arglen = (int *) malloc(nargs * sizeof(int));
-
- /************************************************************
- * Prepare to start a controlled return through all
- * interpreter levels on transaction abort
- ************************************************************/
- memcpy(&save_restart, &Warn_restart, sizeof(save_restart));
- if (sigsetjmp(Warn_restart, 1) != 0)
- {
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
- plperl_restart_in_progress = 1;
- free(qdesc->argtypes);
- free(qdesc->arginfuncs);
- free(qdesc->argtypelems);
- free(qdesc->argvalues);
- free(qdesc->arglen);
- free(qdesc);
- ckfree(args);
- return TCL_ERROR;
- }
-
- /************************************************************
- * Lookup the argument types by name in the system cache
- * and remember the required information for input conversion
- ************************************************************/
- for (i = 0; i < nargs; i++)
- {
- typeTup = SearchSysCache(TYPNAME,
- PointerGetDatum(args[i]),
- 0, 0, 0);
- if (!HeapTupleIsValid(typeTup))
- elog(ERROR, "plperl: Cache lookup of type %s failed", args[i]);
- qdesc->argtypes[i] = typeTup->t_data->t_oid;
- perm_fmgr_info(((Form_pg_type) GETSTRUCT(typeTup))->typinput,
- &(qdesc->arginfuncs[i]));
- qdesc->argtypelems[i] = ((Form_pg_type) GETSTRUCT(typeTup))->typelem;
- qdesc->argvalues[i] = (Datum) NULL;
- qdesc->arglen[i] = (int) (((Form_pg_type) GETSTRUCT(typeTup))->typlen);
- ReleaseSysCache(typeTup);
- }
-
- /************************************************************
- * Prepare the plan and check for errors
- ************************************************************/
- plan = SPI_prepare(argv[1], nargs, qdesc->argtypes);
-
- if (plan == NULL)
- {
- char buf[128];
- char *reason;
-
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
-
- switch (SPI_result)
- {
- case SPI_ERROR_ARGUMENT:
- reason = "SPI_ERROR_ARGUMENT";
- break;
-
- case SPI_ERROR_UNCONNECTED:
- reason = "SPI_ERROR_UNCONNECTED";
- break;
-
- case SPI_ERROR_COPY:
- reason = "SPI_ERROR_COPY";
- break;
-
- case SPI_ERROR_CURSOR:
- reason = "SPI_ERROR_CURSOR";
- break;
-
- case SPI_ERROR_TRANSACTION:
- reason = "SPI_ERROR_TRANSACTION";
- break;
-
- case SPI_ERROR_OPUNKNOWN:
- reason = "SPI_ERROR_OPUNKNOWN";
- break;
-
- default:
- sprintf(buf, "unknown RC %d", SPI_result);
- reason = buf;
- break;
-
- }
-
- elog(ERROR, "plperl: SPI_prepare() failed - %s", reason);
- }
-
- /************************************************************
- * Save the plan
- ************************************************************/
- qdesc->plan = SPI_saveplan(plan);
- if (qdesc->plan == NULL)
- {
- char buf[128];
- char *reason;
-
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
-
- switch (SPI_result)
- {
- case SPI_ERROR_ARGUMENT:
- reason = "SPI_ERROR_ARGUMENT";
- break;
-
- case SPI_ERROR_UNCONNECTED:
- reason = "SPI_ERROR_UNCONNECTED";
- break;
-
- default:
- sprintf(buf, "unknown RC %d", SPI_result);
- reason = buf;
- break;
-
- }
-
- elog(ERROR, "plperl: SPI_saveplan() failed - %s", reason);
- }
-
- /************************************************************
- * Insert a hashtable entry for the plan and return
- * the key to the caller
- ************************************************************/
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
- hashent = Tcl_CreateHashEntry(plperl_query_hash, qdesc->qname, &hashnew);
- Tcl_SetHashValue(hashent, (ClientData) qdesc);
-
- Tcl_SetResult(interp, qdesc->qname, TCL_VOLATILE);
- return TCL_OK;
-}
-
-
-/**********************************************************************
- * plperl_SPI_execp() - Execute a prepared plan
- **********************************************************************/
-static int
-plperl_SPI_execp(ClientData cdata, Tcl_Interp *interp,
- int argc, char *argv[])
-{
- int spi_rc;
- char buf[64];
- int i,
- j;
- int loop_body;
- Tcl_HashEntry *hashent;
- plperl_query_desc *qdesc;
- char *nulls = NULL;
- char *arrayname = NULL;
- int count = 0;
- int callnargs;
- static char **callargs = NULL;
- int loop_rc;
- int ntuples;
- HeapTuple *tuples = NULL;
- TupleDesc tupdesc = NULL;
- sigjmp_buf save_restart;
-
- char *usage = "syntax error - 'SPI_execp "
- "?-nulls string? ?-count n? "
- "?-array name? query ?args? ?loop body?";
-
- /************************************************************
- * Tidy up from an earlier abort
- ************************************************************/
- if (callargs != NULL)
- {
- ckfree(callargs);
- callargs = NULL;
- }
-
- /************************************************************
- * Don't do anything if we are already in restart mode
- ************************************************************/
- if (plperl_restart_in_progress)
- return TCL_ERROR;
-
- /************************************************************
- * Get the options and check syntax
- ************************************************************/
- i = 1;
- while (i < argc)
- {
- if (strcmp(argv[i], "-array") == 0)
- {
- if (++i >= argc)
- {
- Tcl_SetResult(interp, usage, TCL_VOLATILE);
- return TCL_ERROR;
- }
- arrayname = argv[i++];
- continue;
- }
- if (strcmp(argv[i], "-nulls") == 0)
- {
- if (++i >= argc)
- {
- Tcl_SetResult(interp, usage, TCL_VOLATILE);
- return TCL_ERROR;
- }
- nulls = argv[i++];
- continue;
- }
- if (strcmp(argv[i], "-count") == 0)
- {
- if (++i >= argc)
- {
- Tcl_SetResult(interp, usage, TCL_VOLATILE);
- return TCL_ERROR;
- }
- if (Tcl_GetInt(interp, argv[i++], &count) != TCL_OK)
- return TCL_ERROR;
- continue;
- }
-
- break;
- }
-
- /************************************************************
- * Check minimum call arguments
- ************************************************************/
- if (i >= argc)
- {
- Tcl_SetResult(interp, usage, TCL_VOLATILE);
- return TCL_ERROR;
- }
-
- /************************************************************
- * Get the prepared plan descriptor by it's key
- ************************************************************/
- hashent = Tcl_FindHashEntry(plperl_query_hash, argv[i++]);
- if (hashent == NULL)
- {
- Tcl_AppendResult(interp, "invalid queryid '", argv[--i], "'", NULL);
- return TCL_ERROR;
- }
- qdesc = (plperl_query_desc *) Tcl_GetHashValue(hashent);
-
- /************************************************************
- * If a nulls string is given, check for correct length
- ************************************************************/
- if (nulls != NULL)
- {
- if (strlen(nulls) != qdesc->nargs)
- {
- Tcl_SetResult(interp,
- "length of nulls string doesn't match # of arguments",
- TCL_VOLATILE);
- return TCL_ERROR;
- }
- }
-
- /************************************************************
- * If there was a argtype list on preparation, we need
- * an argument value list now
- ************************************************************/
- if (qdesc->nargs > 0)
- {
- if (i >= argc)
- {
- Tcl_SetResult(interp, "missing argument list", TCL_VOLATILE);
- return TCL_ERROR;
- }
-
- /************************************************************
- * Split the argument values
- ************************************************************/
- if (Tcl_SplitList(interp, argv[i++], &callnargs, &callargs) != TCL_OK)
- return TCL_ERROR;
-
- /************************************************************
- * Check that the # of arguments matches
- ************************************************************/
- if (callnargs != qdesc->nargs)
- {
- Tcl_SetResult(interp,
- "argument list length doesn't match # of arguments for query",
- TCL_VOLATILE);
- if (callargs != NULL)
- {
- ckfree(callargs);
- callargs = NULL;
- }
- return TCL_ERROR;
- }
-
- /************************************************************
- * Prepare to start a controlled return through all
- * interpreter levels on transaction abort during the
- * parse of the arguments
- ************************************************************/
- memcpy(&save_restart, &Warn_restart, sizeof(save_restart));
- if (sigsetjmp(Warn_restart, 1) != 0)
- {
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
- for (j = 0; j < callnargs; j++)
- {
- if (qdesc->arglen[j] < 0 &&
- qdesc->argvalues[j] != (Datum) NULL)
- {
- pfree((char *) (qdesc->argvalues[j]));
- qdesc->argvalues[j] = (Datum) NULL;
- }
- }
- ckfree(callargs);
- callargs = NULL;
- plperl_restart_in_progress = 1;
- Tcl_SetResult(interp, "Transaction abort", TCL_VOLATILE);
- return TCL_ERROR;
- }
-
- /************************************************************
- * Setup the value array for the SPI_execp() using
- * the type specific input functions
- ************************************************************/
- for (j = 0; j < callnargs; j++)
- {
- qdesc->argvalues[j] =
- FunctionCall3(&qdesc->arginfuncs[j],
- CStringGetDatum(callargs[j]),
- ObjectIdGetDatum(qdesc->argtypelems[j]),
- Int32GetDatum(qdesc->arglen[j]));
- }
-
- /************************************************************
- * Free the splitted argument value list
- ************************************************************/
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
- ckfree(callargs);
- callargs = NULL;
- }
- else
- callnargs = 0;
-
- /************************************************************
- * Remember the index of the last processed call
- * argument - a loop body for SELECT might follow
- ************************************************************/
- loop_body = i;
-
- /************************************************************
- * Prepare to start a controlled return through all
- * interpreter levels on transaction abort
- ************************************************************/
- memcpy(&save_restart, &Warn_restart, sizeof(save_restart));
- if (sigsetjmp(Warn_restart, 1) != 0)
- {
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
- for (j = 0; j < callnargs; j++)
- {
- if (qdesc->arglen[j] < 0 && qdesc->argvalues[j] != (Datum) NULL)
- {
- pfree((char *) (qdesc->argvalues[j]));
- qdesc->argvalues[j] = (Datum) NULL;
- }
- }
- plperl_restart_in_progress = 1;
- Tcl_SetResult(interp, "Transaction abort", TCL_VOLATILE);
- return TCL_ERROR;
- }
-
- /************************************************************
- * Execute the plan
- ************************************************************/
- spi_rc = SPI_execp(qdesc->plan, qdesc->argvalues, nulls, count);
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
-
- /************************************************************
- * For varlena data types, free the argument values
- ************************************************************/
- for (j = 0; j < callnargs; j++)
- {
- if (qdesc->arglen[j] < 0 && qdesc->argvalues[j] != (Datum) NULL)
- {
- pfree((char *) (qdesc->argvalues[j]));
- qdesc->argvalues[j] = (Datum) NULL;
- }
- }
-
- /************************************************************
- * Check the return code from SPI_execp()
- ************************************************************/
- switch (spi_rc)
- {
- case SPI_OK_UTILITY:
- Tcl_SetResult(interp, "0", TCL_VOLATILE);
- return TCL_OK;
-
- case SPI_OK_SELINTO:
- case SPI_OK_INSERT:
- case SPI_OK_DELETE:
- case SPI_OK_UPDATE:
- sprintf(buf, "%d", SPI_processed);
- Tcl_SetResult(interp, buf, TCL_VOLATILE);
- return TCL_OK;
-
- case SPI_OK_SELECT:
- break;
-
- case SPI_ERROR_ARGUMENT:
- Tcl_SetResult(interp,
- "plperl: SPI_exec() failed - SPI_ERROR_ARGUMENT",
- TCL_VOLATILE);
- return TCL_ERROR;
-
- case SPI_ERROR_UNCONNECTED:
- Tcl_SetResult(interp,
- "plperl: SPI_exec() failed - SPI_ERROR_UNCONNECTED",
- TCL_VOLATILE);
- return TCL_ERROR;
-
- case SPI_ERROR_COPY:
- Tcl_SetResult(interp,
- "plperl: SPI_exec() failed - SPI_ERROR_COPY",
- TCL_VOLATILE);
- return TCL_ERROR;
-
- case SPI_ERROR_CURSOR:
- Tcl_SetResult(interp,
- "plperl: SPI_exec() failed - SPI_ERROR_CURSOR",
- TCL_VOLATILE);
- return TCL_ERROR;
-
- case SPI_ERROR_TRANSACTION:
- Tcl_SetResult(interp,
- "plperl: SPI_exec() failed - SPI_ERROR_TRANSACTION",
- TCL_VOLATILE);
- return TCL_ERROR;
-
- case SPI_ERROR_OPUNKNOWN:
- Tcl_SetResult(interp,
- "plperl: SPI_exec() failed - SPI_ERROR_OPUNKNOWN",
- TCL_VOLATILE);
- return TCL_ERROR;
-
- default:
- sprintf(buf, "%d", spi_rc);
- Tcl_AppendResult(interp, "plperl: SPI_exec() failed - ",
- "unknown RC ", buf, NULL);
- return TCL_ERROR;
- }
-
- /************************************************************
- * Only SELECT queries fall through to here - remember the
- * tuples we got
- ************************************************************/
-
- ntuples = SPI_processed;
- if (ntuples > 0)
- {
- tuples = SPI_tuptable->vals;
- tupdesc = SPI_tuptable->tupdesc;
- }
-
- /************************************************************
- * Prepare to start a controlled return through all
- * interpreter levels on transaction abort during
- * the ouput conversions of the results
- ************************************************************/
- memcpy(&save_restart, &Warn_restart, sizeof(save_restart));
- if (sigsetjmp(Warn_restart, 1) != 0)
- {
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
- plperl_restart_in_progress = 1;
- Tcl_SetResult(interp, "Transaction abort", TCL_VOLATILE);
- return TCL_ERROR;
- }
-
- /************************************************************
- * If there is no loop body given, just set the variables
- * from the first tuple (if any) and return the number of
- * tuples selected
- ************************************************************/
- if (loop_body >= argc)
- {
- if (ntuples > 0)
- plperl_set_tuple_values(interp, arrayname, 0, tuples[0], tupdesc);
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
- sprintf(buf, "%d", ntuples);
- Tcl_SetResult(interp, buf, TCL_VOLATILE);
- return TCL_OK;
- }
-
- /************************************************************
- * There is a loop body - process all tuples and evaluate
- * the body on each
- ************************************************************/
- for (i = 0; i < ntuples; i++)
- {
- plperl_set_tuple_values(interp, arrayname, i, tuples[i], tupdesc);
-
- loop_rc = Tcl_Eval(interp, argv[loop_body]);
-
- if (loop_rc == TCL_OK)
- continue;
- if (loop_rc == TCL_CONTINUE)
- continue;
- if (loop_rc == TCL_RETURN)
- {
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
- return TCL_RETURN;
- }
- if (loop_rc == TCL_BREAK)
- break;
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
- return TCL_ERROR;
- }
-
- /************************************************************
- * Finally return the number of tuples
- ************************************************************/
- memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart));
- sprintf(buf, "%d", ntuples);
- Tcl_SetResult(interp, buf, TCL_VOLATILE);
- return TCL_OK;
-}
-
-
-/**********************************************************************
- * plperl_set_tuple_values() - Set variables for all attributes
- * of a given tuple
- **********************************************************************/
-static void
-plperl_set_tuple_values(Tcl_Interp *interp, char *arrayname,
- int tupno, HeapTuple tuple, TupleDesc tupdesc)
-{
- int i;
- char *outputstr;
- char buf[64];
- Datum attr;
- bool isnull;
-
- char *attname;
- HeapTuple typeTup;
- Oid typoutput;
- Oid typelem;
-
- char **arrptr;
- char **nameptr;
- char *nullname = NULL;
-
- /************************************************************
- * Prepare pointers for Tcl_SetVar2() below and in array
- * mode set the .tupno element
- ************************************************************/
- if (arrayname == NULL)
- {
- arrptr = &attname;
- nameptr = &nullname;
- }
- else
- {
- arrptr = &arrayname;
- nameptr = &attname;
- sprintf(buf, "%d", tupno);
- Tcl_SetVar2(interp, arrayname, ".tupno", buf, 0);
- }
-
- for (i = 0; i < tupdesc->natts; i++)
- {
- /************************************************************
- * Get the attribute name
- ************************************************************/
- attname = tupdesc->attrs[i]->attname.data;
-
- /************************************************************
- * Get the attributes value
- ************************************************************/
- attr = heap_getattr(tuple, i + 1, tupdesc, &isnull);
-
- /************************************************************
- * Lookup the attribute type in the syscache
- * for the output function
- ************************************************************/
- typeTup = SearchSysCache(TYPEOID,
- ObjectIdGetDatum(tupdesc->attrs[i]->atttypid),
- 0, 0, 0);
- if (!HeapTupleIsValid(typeTup))
- {
- elog(ERROR, "plperl: Cache lookup for attribute '%s' type %u failed",
- attname, tupdesc->attrs[i]->atttypid);
- }
-
- typoutput = (Oid) (((Form_pg_type) GETSTRUCT(typeTup))->typoutput);
- typelem = (Oid) (((Form_pg_type) GETSTRUCT(typeTup))->typelem);
- ReleaseSysCache(typeTup);
-
- /************************************************************
- * If there is a value, set the variable
- * If not, unset it
- *
- * Hmmm - Null attributes will cause functions to
- * crash if they don't expect them - need something
- * smarter here.
- ************************************************************/
- if (!isnull && OidIsValid(typoutput))
- {
- outputstr = DatumGetCString(OidFunctionCall3(typoutput,
- attr,
- ObjectIdGetDatum(typelem),
- Int32GetDatum(tupdesc->attrs[i]->attlen)));
- Tcl_SetVar2(interp, *arrptr, *nameptr, outputstr, 0);
- pfree(outputstr);
- }
- else
- Tcl_UnsetVar2(interp, *arrptr, *nameptr, 0);
- }
-}
-
-
-#endif
/**********************************************************************
* plperl_build_tuple_argument() - Build a string for a ref to a hash
* from all attributes of a given tuple
SV *output;
Datum attr;
bool isnull;
-
char *attname;
char *outputstr;
HeapTuple typeTup;
************************************************************/
attr = heap_getattr(tuple, i + 1, tupdesc, &isnull);
+ /************************************************************
+ * If it is null it will be set to undef in the hash.
+ ************************************************************/
+ if (isnull)
+ {
+ sv_catpvf(output, "'%s' => undef,", attname);
+ continue;
+ }
+
/************************************************************
* Lookup the attribute type in the syscache
* for the output function
ObjectIdGetDatum(tupdesc->attrs[i]->atttypid),
0, 0, 0);
if (!HeapTupleIsValid(typeTup))
- {
elog(ERROR, "plperl: Cache lookup for attribute '%s' type %u failed",
attname, tupdesc->attrs[i]->atttypid);
- }
- typoutput = (Oid) (((Form_pg_type) GETSTRUCT(typeTup))->typoutput);
- typelem = (Oid) (((Form_pg_type) GETSTRUCT(typeTup))->typelem);
+ typoutput = ((Form_pg_type) GETSTRUCT(typeTup))->typoutput;
+ typelem = ((Form_pg_type) GETSTRUCT(typeTup))->typelem;
ReleaseSysCache(typeTup);
/************************************************************
- * If there is a value, append the attribute name and the
- * value to the list.
- * If it is null it will be set to undef.
+ * Append the attribute name and the value to the list.
************************************************************/
- if (!isnull && OidIsValid(typoutput))
- {
- outputstr = DatumGetCString(OidFunctionCall3(typoutput,
- attr,
- ObjectIdGetDatum(typelem),
- Int32GetDatum(tupdesc->attrs[i]->attlen)));
- sv_catpvf(output, "'%s' => '%s',", attname, outputstr);
- pfree(outputstr);
- }
- else
- sv_catpvf(output, "'%s' => undef,", attname);
+ outputstr = DatumGetCString(OidFunctionCall3(typoutput,
+ attr,
+ ObjectIdGetDatum(typelem),
+ Int32GetDatum(tupdesc->attrs[i]->atttypmod)));
+ sv_catpvf(output, "'%s' => '%s',", attname, outputstr);
+ pfree(outputstr);
}
+
sv_catpv(output, "}");
output = perl_eval_pv(SvPV(output, PL_na), TRUE);
return output;
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