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Cleanups.

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This commit is contained in:
Vadim B. Mikheev
1997-09-11 07:24:37 +00:00
parent b6f348cd33
commit a74613f478
4 changed files with 281 additions and 62 deletions
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80
src/backend/executor/spi.c
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@ -17,7 +17,7 @@ typedef struct
Portal portal; /* portal per procedure */
MemoryContext savedcxt;
CommandId savedId;
} _SPI_connection;
} _SPI_connection;
static Portal _SPI_portal = (Portal) NULL;
static _SPI_connection *_SPI_stack = NULL;
@ -37,20 +37,24 @@ typedef struct
List *ptlist;
int nargs;
Oid *argtypes;
} _SPI_plan;
} _SPI_plan;
static int _SPI_execute(char *src, int tcount, _SPI_plan *plan);
static int _SPI_pquery(QueryDesc *queryDesc, EState *state, int tcount);
static int _SPI_execute(char *src, int tcount, _SPI_plan * plan);
static int _SPI_pquery(QueryDesc * queryDesc, EState * state, int tcount);
#if 0
static void _SPI_fetch(FetchStmt *stmt);
static void _SPI_fetch(FetchStmt * stmt);
#endif
static int
_SPI_execute_plan(_SPI_plan *plan,
_SPI_execute_plan(_SPI_plan * plan,
char **Values, char *Nulls, int tcount);
static _SPI_plan *_SPI_copy_plan(_SPI_plan *plan, bool local);
#define _SPI_CPLAN_CURCXT 0
#define _SPI_CPLAN_PROCXT 1
#define _SPI_CPLAN_TOPCXT 2
static _SPI_plan *_SPI_copy_plan(_SPI_plan * plan, int location);
static int _SPI_begin_call(bool execmem);
static int _SPI_end_call(bool procmem);
@ -108,7 +112,7 @@ SPI_connect()
if (_SPI_connected <= -1)
elog(FATAL, "SPI_connect: some connection(s) expected");
_SPI_stack = (_SPI_connection *) realloc(_SPI_stack,
(_SPI_connected + 1) * sizeof(_SPI_connection));
(_SPI_connected + 2) * sizeof(_SPI_connection));
}
/*
@ -202,14 +206,16 @@ SPI_execp(void *plan, char **Values, char *Nulls, int tcount)
if (plan == NULL || tcount < 0)
return (SPI_ERROR_ARGUMENT);
if (((_SPI_plan *) plan)->nargs > 0 &&
(Values == NULL || Nulls == NULL))
if (((_SPI_plan *) plan)->nargs > 0 && Values == NULL)
return (SPI_ERROR_PARAM);
res = _SPI_begin_call(true);
if (res < 0)
return (res);
/* copy plan to current (executor) context */
plan = (void *) _SPI_copy_plan(plan, _SPI_CPLAN_CURCXT);
res = _SPI_execute_plan((_SPI_plan *) plan, Values, Nulls, tcount);
_SPI_end_call(true);
@ -217,7 +223,7 @@ SPI_execp(void *plan, char **Values, char *Nulls, int tcount)
}
void *
SPI_prepare(char *src, int nargs, Oid *argtypes)
SPI_prepare(char *src, int nargs, Oid * argtypes)
{
_SPI_plan *plan;
@ -237,8 +243,8 @@ SPI_prepare(char *src, int nargs, Oid *argtypes)
SPI_result = _SPI_execute(src, 0, plan);
if (SPI_result >= 0) /* copy plan to local space */
plan = _SPI_copy_plan(plan, true);
if (SPI_result >= 0) /* copy plan to procedure context */
plan = _SPI_copy_plan(plan, _SPI_CPLAN_PROCXT);
else
plan = NULL;
@ -263,7 +269,7 @@ SPI_saveplan(void *plan)
if (SPI_result < 0)
return (NULL);
newplan = _SPI_copy_plan((_SPI_plan *) plan, false);
newplan = _SPI_copy_plan((_SPI_plan *) plan, _SPI_CPLAN_TOPCXT);
_SPI_curid--;
SPI_result = 0;
@ -289,6 +295,27 @@ SPI_fnumber(TupleDesc tupdesc, char *fname)
return (SPI_ERROR_NOATTRIBUTE);
}
char *
SPI_fname(TupleDesc tupdesc, int fnumber)
{
SPI_result = 0;
if (_SPI_curid + 1 != _SPI_connected)
{
SPI_result = SPI_ERROR_UNCONNECTED;
return (NULL);
}
if (tupdesc->natts < fnumber || fnumber <= 0)
{
SPI_result = SPI_ERROR_NOATTRIBUTE;
return (NULL);
}
return (nameout(&(tupdesc->attrs[fnumber - 1]->attname)));
}
char *
SPI_getvalue(HeapTuple tuple, TupleDesc tupdesc, int fnumber)
{
@ -320,7 +347,7 @@ SPI_getvalue(HeapTuple tuple, TupleDesc tupdesc, int fnumber)
}
char *
SPI_getbinval(HeapTuple tuple, TupleDesc tupdesc, int fnumber, bool *isnull)
SPI_getbinval(HeapTuple tuple, TupleDesc tupdesc, int fnumber, bool * isnull)
{
char *val;
@ -457,7 +484,7 @@ spi_printtup(HeapTuple tuple, TupleDesc tupdesc)
*/
static int
_SPI_execute(char *src, int tcount, _SPI_plan *plan)
_SPI_execute(char *src, int tcount, _SPI_plan * plan)
{
QueryTreeList *queryTree_list;
List *planTree_list;
@ -554,7 +581,7 @@ _SPI_execute(char *src, int tcount, _SPI_plan *plan)
}
static int
_SPI_execute_plan(_SPI_plan *plan, char **Values, char *Nulls, int tcount)
_SPI_execute_plan(_SPI_plan * plan, char **Values, char *Nulls, int tcount)
{
QueryTreeList *queryTree_list = plan->qtlist;
List *planTree_list = plan->ptlist;
@ -606,7 +633,7 @@ _SPI_execute_plan(_SPI_plan *plan, char **Values, char *Nulls, int tcount)
{
paramLI->kind = PARAM_NUM;
paramLI->id = k + 1;
paramLI->isnull = (Nulls[k] != 0);
paramLI->isnull = (Nulls != NULL && Nulls[k] != 'n');
paramLI->value = (Datum) Values[k];
}
paramLI->kind = PARAM_INVALID;
@ -625,7 +652,7 @@ _SPI_execute_plan(_SPI_plan *plan, char **Values, char *Nulls, int tcount)
}
static int
_SPI_pquery(QueryDesc *queryDesc, EState *state, int tcount)
_SPI_pquery(QueryDesc * queryDesc, EState * state, int tcount)
{
Query *parseTree;
Plan *plan;
@ -692,7 +719,7 @@ _SPI_pquery(QueryDesc *queryDesc, EState *state, int tcount)
return (SPI_OK_CURSOR);
}
ExecutorRun(queryDesc, state, EXEC_RUN, tcount);
ExecutorRun(queryDesc, state, EXEC_FOR, tcount);
_SPI_current->processed = state->es_processed;
if (operation == CMD_SELECT && queryDesc->dest == SPI)
@ -723,7 +750,7 @@ _SPI_pquery(QueryDesc *queryDesc, EState *state, int tcount)
#if 0
static void
_SPI_fetch(FetchStmt *stmt)
_SPI_fetch(FetchStmt * stmt)
{
char *name = stmt->portalname;
int feature = (stmt->direction == FORWARD) ? EXEC_FOR : EXEC_BACK;
@ -864,16 +891,16 @@ _SPI_checktuples(bool isRetrieveIntoRelation)
}
static _SPI_plan *
_SPI_copy_plan(_SPI_plan *plan, bool local)
_SPI_copy_plan(_SPI_plan * plan, int location)
{
_SPI_plan *newplan;
MemoryContext oldcxt;
MemoryContext oldcxt = NULL;
int i;
if (local)
if (location == _SPI_CPLAN_PROCXT)
oldcxt = MemoryContextSwitchTo((MemoryContext)
PortalGetVariableMemory(_SPI_current->portal));
else
else if (location == _SPI_CPLAN_TOPCXT)
oldcxt = MemoryContextSwitchTo(TopMemoryContext);
newplan = (_SPI_plan *) palloc(sizeof(_SPI_plan));
@ -895,7 +922,8 @@ _SPI_copy_plan(_SPI_plan *plan, bool local)
else
newplan->argtypes = NULL;
MemoryContextSwitchTo(oldcxt);
if (location != _SPI_CPLAN_CURCXT)
MemoryContextSwitchTo(oldcxt);
return (newplan);
}