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Postgres FD Implementation
Commit 6c785d59 authored by Bruce Momjian's avatar Bruce Momjian
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Change FETCH/MOVE to use int8. 

Dhanaraj M
parent 87eb130a
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Showing with 109 additions and 52 deletions
src/backend/commands/portalcmds.c
View file @ 6c785d59
......@@ -14,7 +14,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/portalcmds.c,v 1.51 2006/08/29 02:11:29 momjian Exp $
* $PostgreSQL: pgsql/src/backend/commands/portalcmds.c,v 1.52 2006/09/02 18:17:17 momjian Exp $
*
*-------------------------------------------------------------------------
*/
......@@ -177,7 +177,7 @@ PerformPortalFetch(FetchStmt *stmt,
char *completionTag)
{
Portal portal;
long nprocessed;
int64 nprocessed;
/*
* Disallow empty-string cursor name (conflicts with protocol-level
......@@ -210,7 +210,7 @@ PerformPortalFetch(FetchStmt *stmt,
/* Return command status if wanted */
if (completionTag)
snprintf(completionTag, COMPLETION_TAG_BUFSIZE, "%s %ld",
snprintf(completionTag, COMPLETION_TAG_BUFSIZE, "%s " INT64_FORMAT,
stmt->ismove ? "MOVE" : "FETCH",
nprocessed);
}
......
src/backend/executor/spi.c
View file @ 6c785d59
......@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/executor/spi.c,v 1.159 2006/08/29 02:11:29 momjian Exp $
* $PostgreSQL: pgsql/src/backend/executor/spi.c,v 1.160 2006/09/02 18:17:17 momjian Exp $
*
*-------------------------------------------------------------------------
*/
......@@ -45,7 +45,7 @@ static int _SPI_pquery(QueryDesc *queryDesc, long tcount);
static void _SPI_error_callback(void *arg);
static void _SPI_cursor_operation(Portal portal, bool forward, long count,
static void _SPI_cursor_operation(Portal portal, bool forward, int64 count,
DestReceiver *dest);
static _SPI_plan *_SPI_copy_plan(_SPI_plan *plan, int location);
......@@ -980,7 +980,7 @@ SPI_cursor_find(const char *name)
* Fetch rows in a cursor
*/
void
SPI_cursor_fetch(Portal portal, bool forward, long count)
SPI_cursor_fetch(Portal portal, bool forward, int64 count)
{
_SPI_cursor_operation(portal, forward, count,
CreateDestReceiver(DestSPI, NULL));
......@@ -994,7 +994,7 @@ SPI_cursor_fetch(Portal portal, bool forward, long count)
* Move in a cursor
*/
void
SPI_cursor_move(Portal portal, bool forward, long count)
SPI_cursor_move(Portal portal, bool forward, int64 count)
{
_SPI_cursor_operation(portal, forward, count, None_Receiver);
}
......@@ -1639,10 +1639,10 @@ _SPI_error_callback(void *arg)
* Do a FETCH or MOVE in a cursor
*/
static void
_SPI_cursor_operation(Portal portal, bool forward, long count,
_SPI_cursor_operation(Portal portal, bool forward, int64 count,
DestReceiver *dest)
{
long nfetched;
int64 nfetched;
/* Check that the portal is valid */
if (!PortalIsValid(portal))
......
src/backend/parser/gram.y
View file @ 6c785d59
......@@ -11,7 +11,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/parser/gram.y,v 2.559 2006/08/30 23:34:21 tgl Exp $
* $PostgreSQL: pgsql/src/backend/parser/gram.y,v 2.560 2006/09/02 18:17:17 momjian Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
......@@ -116,6 +116,7 @@ static void doNegateFloat(Value *v);
%union
{
int ival;
int64 i64val;
char chr;
char *str;
const char *keyword;
......@@ -322,6 +323,7 @@ static void doNegateFloat(Value *v);
%type <boolean> opt_varying opt_timezone
%type <ival> Iconst SignedIconst
%type <i64val> SignedI64const
%type <str> Sconst comment_text
%type <str> RoleId opt_granted_by opt_boolean ColId_or_Sconst
%type <list> var_list var_list_or_default
......@@ -446,6 +448,7 @@ static void doNegateFloat(Value *v);
/* Special token types, not actually keywords - see the "lex" file */
%token <str> IDENT FCONST SCONST BCONST XCONST Op
%token <ival> ICONST PARAM
%token <i64val> I64CONST
/* precedence: lowest to highest */
%nonassoc SET /* see relation_expr_opt_alias */
......@@ -3354,6 +3357,27 @@ fetch_direction:
n->howMany = $1;
$$ = (Node *)n;
}
| ABSOLUTE_P SignedI64const
{
FetchStmt *n = makeNode(FetchStmt);
n->direction = FETCH_ABSOLUTE;
n->howMany = $2;
$$ = (Node *)n;
}
| RELATIVE_P SignedI64const
{
FetchStmt *n = makeNode(FetchStmt);
n->direction = FETCH_RELATIVE;
n->howMany = $2;
$$ = (Node *)n;
}
| SignedI64const
{
FetchStmt *n = makeNode(FetchStmt);
n->direction = FETCH_FORWARD;
n->howMany = $1;
$$ = (Node *)n;
}
| ALL
{
FetchStmt *n = makeNode(FetchStmt);
......@@ -3375,6 +3399,13 @@ fetch_direction:
n->howMany = $2;
$$ = (Node *)n;
}
| FORWARD SignedI64const
{
FetchStmt *n = makeNode(FetchStmt);
n->direction = FETCH_FORWARD;
n->howMany = $2;
$$ = (Node *)n;
}
| FORWARD ALL
{
FetchStmt *n = makeNode(FetchStmt);
......@@ -3396,6 +3427,13 @@ fetch_direction:
n->howMany = $2;
$$ = (Node *)n;
}
| BACKWARD SignedI64const
{
FetchStmt *n = makeNode(FetchStmt);
n->direction = FETCH_BACKWARD;
n->howMany = $2;
$$ = (Node *)n;
}
| BACKWARD ALL
{
FetchStmt *n = makeNode(FetchStmt);
......@@ -8441,6 +8479,9 @@ RoleId: ColId { $$ = $1; };
SignedIconst: ICONST { $$ = $1; }
| '-' ICONST { $$ = - $2; }
;
SignedI64const: I64CONST { $$ = $1; }
| '-' I64CONST { $$ = - $2; }
;
/*
* Name classification hierarchy.
......
src/backend/parser/scan.l
View file @ 6c785d59
......@@ -24,7 +24,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/parser/scan.l,v 1.135 2006/05/21 20:10:42 tgl Exp $
* $PostgreSQL: pgsql/src/backend/parser/scan.l,v 1.136 2006/09/02 18:17:17 momjian Exp $
*
*-------------------------------------------------------------------------
*/
......@@ -666,6 +666,22 @@ other .
#endif
)
{
/* For Fetch/Move stmt, convert the string into int64 value */
if((strcmp(yylval.keyword, "fetch")==0) || (strcmp(yylval.keyword, "move")==0))
{
int64 int64Val;
errno = 0;
int64Val = strtoll(yytext, &endptr, 10);
if (*endptr != '\0' || errno == ERANGE)
{
yylval.str = pstrdup(yytext);
return FCONST;
}
yylval.i64val = int64Val;
return I64CONST;
}
/* integer too large, treat it as a float */
yylval.str = pstrdup(yytext);
return FCONST;
......
src/backend/tcop/postgres.c
View file @ 6c785d59
......@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/tcop/postgres.c,v 1.503 2006/08/30 18:22:02 momjian Exp $
* $PostgreSQL: pgsql/src/backend/tcop/postgres.c,v 1.504 2006/09/02 18:17:17 momjian Exp $
*
* NOTES
* this is the "main" module of the postgres backend and
......@@ -1687,7 +1687,7 @@ exec_bind_message(StringInfo input_message)
* Process an "Execute" message for a portal
*/
static void
exec_execute_message(const char *portal_name, long max_rows)
exec_execute_message(const char *portal_name, int64 max_rows)
{
CommandDest dest;
DestReceiver *receiver;
......@@ -3308,13 +3308,13 @@ PostgresMain(int argc, char *argv[], const char *username)
case 'E': /* execute */
{
const char *portal_name;
int max_rows;
int64 max_rows;
/* Set statement_timestamp() */
SetCurrentStatementStartTimestamp();
portal_name = pq_getmsgstring(&input_message);
max_rows = pq_getmsgint(&input_message, 4);
max_rows = pq_getmsgint64(&input_message);
pq_getmsgend(&input_message);
exec_execute_message(portal_name, max_rows);
......
src/backend/tcop/pquery.c
View file @ 6c785d59
......@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/tcop/pquery.c,v 1.107 2006/08/14 22:57:15 tgl Exp $
* $PostgreSQL: pgsql/src/backend/tcop/pquery.c,v 1.108 2006/09/02 18:17:17 momjian Exp $
*
*-------------------------------------------------------------------------
*/
......@@ -38,18 +38,18 @@ static void ProcessQuery(Query *parsetree,
DestReceiver *dest,
char *completionTag);
static void FillPortalStore(Portal portal);
static uint32 RunFromStore(Portal portal, ScanDirection direction, long count,
static uint64 RunFromStore(Portal portal, ScanDirection direction, int64 count,
DestReceiver *dest);
static long PortalRunSelect(Portal portal, bool forward, long count,
static int64 PortalRunSelect(Portal portal, bool forward, int64 count,
DestReceiver *dest);
static void PortalRunUtility(Portal portal, Query *query,
DestReceiver *dest, char *completionTag);
static void PortalRunMulti(Portal portal,
DestReceiver *dest, DestReceiver *altdest,
char *completionTag);
static long DoPortalRunFetch(Portal portal,
static int64 DoPortalRunFetch(Portal portal,
FetchDirection fdirection,
long count,
int64 count,
DestReceiver *dest);
static void DoPortalRewind(Portal portal);
......@@ -581,7 +581,7 @@ PortalSetResultFormat(Portal portal, int nFormats, int16 *formats)
* suspended due to exhaustion of the count parameter.
*/
bool
PortalRun(Portal portal, long count,
PortalRun(Portal portal, int64 count,
DestReceiver *dest, DestReceiver *altdest,
char *completionTag)
{
......@@ -773,15 +773,15 @@ PortalRun(Portal portal, long count,
*
* Returns number of rows processed (suitable for use in result tag)
*/
static long
static int64
PortalRunSelect(Portal portal,
bool forward,
long count,
int64 count,
DestReceiver *dest)
{
QueryDesc *queryDesc;
ScanDirection direction;
uint32 nprocessed;
uint64 nprocessed;
/*
* NB: queryDesc will be NULL if we are fetching from a held cursor or a
......@@ -834,12 +834,12 @@ PortalRunSelect(Portal portal,
if (!ScanDirectionIsNoMovement(direction))
{
long oldPos;
int64 oldPos;
if (nprocessed > 0)
portal->atStart = false; /* OK to go backward now */
if (count == 0 ||
(unsigned long) nprocessed < (unsigned long) count)
(uint64) nprocessed < (uint64) count)
portal->atEnd = true; /* we retrieved 'em all */
oldPos = portal->portalPos;
portal->portalPos += nprocessed;
......@@ -882,7 +882,7 @@ PortalRunSelect(Portal portal,
portal->portalPos++; /* adjust for endpoint case */
}
if (count == 0 ||
(unsigned long) nprocessed < (unsigned long) count)
(uint64) nprocessed < (uint64) count)
{
portal->atStart = true; /* we retrieved 'em all */
portal->portalPos = 0;
......@@ -890,7 +890,7 @@ PortalRunSelect(Portal portal,
}
else
{
long oldPos;
int64 oldPos;
oldPos = portal->portalPos;
portal->portalPos -= nprocessed;
......@@ -958,11 +958,11 @@ FillPortalStore(Portal portal)
* are run in the caller's memory context (since we have no estate). Watch
* out for memory leaks.
*/
static uint32
RunFromStore(Portal portal, ScanDirection direction, long count,
static uint64
RunFromStore(Portal portal, ScanDirection direction, int64 count,
DestReceiver *dest)
{
long current_tuple_count = 0;
int64 current_tuple_count = 0;
TupleTableSlot *slot;
slot = MakeSingleTupleTableSlot(portal->tupDesc);
......@@ -1010,7 +1010,7 @@ RunFromStore(Portal portal, ScanDirection direction, long count,
ExecDropSingleTupleTableSlot(slot);
return (uint32) current_tuple_count;
return (uint64) current_tuple_count;
}
/*
......@@ -1200,13 +1200,13 @@ PortalRunMulti(Portal portal,
*
* Returns number of rows processed (suitable for use in result tag)
*/
long
int64
PortalRunFetch(Portal portal,
FetchDirection fdirection,
long count,
int64 count,
DestReceiver *dest)
{
long result;
int64 result;
Portal saveActivePortal;
Snapshot saveActiveSnapshot;
ResourceOwner saveResourceOwner;
......@@ -1307,10 +1307,10 @@ PortalRunFetch(Portal portal,
*
* Returns number of rows processed (suitable for use in result tag)
*/
static long
static int64
DoPortalRunFetch(Portal portal,
FetchDirection fdirection,
long count,
int64 count,
DestReceiver *dest)
{
bool forward;
......@@ -1347,7 +1347,7 @@ DoPortalRunFetch(Portal portal,
* we are. In any case, we arrange to fetch the target row
* going forwards.
*/
if (portal->posOverflow || portal->portalPos == LONG_MAX ||
if (portal->posOverflow || portal->portalPos == LLONG_MAX ||
count - 1 <= portal->portalPos / 2)
{
DoPortalRewind(portal);
......@@ -1357,7 +1357,7 @@ DoPortalRunFetch(Portal portal,
}
else
{
long pos = portal->portalPos;
int64 pos = portal->portalPos;
if (portal->atEnd)
pos++; /* need one extra fetch if off end */
......@@ -1469,7 +1469,7 @@ DoPortalRunFetch(Portal portal,
*/
if (!forward && count == FETCH_ALL && dest->mydest == DestNone)
{
long result = portal->portalPos;
int64 result = portal->portalPos;
if (result > 0 && !portal->atEnd)
result--;
......
src/include/executor/spi.h
View file @ 6c785d59
......@@ -2,7 +2,7 @@
*
* spi.h
*
* $PostgreSQL: pgsql/src/include/executor/spi.h,v 1.55 2006/08/27 23:47:58 tgl Exp $
* $PostgreSQL: pgsql/src/include/executor/spi.h,v 1.56 2006/09/02 18:17:17 momjian Exp $
*
*-------------------------------------------------------------------------
*/
......@@ -126,8 +126,8 @@ extern void SPI_freetuptable(SPITupleTable *tuptable);
extern Portal SPI_cursor_open(const char *name, void *plan,
Datum *Values, const char *Nulls, bool read_only);
extern Portal SPI_cursor_find(const char *name);
extern void SPI_cursor_fetch(Portal portal, bool forward, long count);
extern void SPI_cursor_move(Portal portal, bool forward, long count);
extern void SPI_cursor_fetch(Portal portal, bool forward, int64 count);
extern void SPI_cursor_move(Portal portal, bool forward, int64 count);
extern void SPI_cursor_close(Portal portal);
extern void AtEOXact_SPI(bool isCommit);
......
src/include/nodes/parsenodes.h
View file @ 6c785d59
......@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/nodes/parsenodes.h,v 1.326 2006/08/30 23:34:22 tgl Exp $
* $PostgreSQL: pgsql/src/include/nodes/parsenodes.h,v 1.327 2006/09/02 18:17:17 momjian Exp $
*
*-------------------------------------------------------------------------
*/
......@@ -1439,13 +1439,13 @@ typedef enum FetchDirection
FETCH_RELATIVE
} FetchDirection;
#define FETCH_ALL LONG_MAX
#define FETCH_ALL LLONG_MAX
typedef struct FetchStmt
{
NodeTag type;
FetchDirection direction; /* see above */
long howMany; /* number of rows, or position argument */
int64 howMany; /* number of rows, or position argument */
char *portalname; /* name of portal (cursor) */
bool ismove; /* TRUE if MOVE */
} FetchStmt;
......
src/include/tcop/pquery.h
View file @ 6c785d59
......@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/tcop/pquery.h,v 1.37 2006/03/05 15:59:00 momjian Exp $
* $PostgreSQL: pgsql/src/include/tcop/pquery.h,v 1.38 2006/09/02 18:17:17 momjian Exp $
*
*-------------------------------------------------------------------------
*/
......@@ -30,13 +30,13 @@ extern void PortalStart(Portal portal, ParamListInfo params,
extern void PortalSetResultFormat(Portal portal, int nFormats,
int16 *formats);
extern bool PortalRun(Portal portal, long count,
extern bool PortalRun(Portal portal, int64 count,
DestReceiver *dest, DestReceiver *altdest,
char *completionTag);
extern long PortalRunFetch(Portal portal,
extern int64 PortalRunFetch(Portal portal,
FetchDirection fdirection,
long count,
int64 count,
DestReceiver *dest);
#endif /* PQUERY_H */
src/include/utils/portal.h
View file @ 6c785d59
......@@ -39,7 +39,7 @@
* Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/utils/portal.h,v 1.67 2006/08/29 02:11:30 momjian Exp $
* $PostgreSQL: pgsql/src/include/utils/portal.h,v 1.68 2006/09/02 18:17:18 momjian Exp $
*
*-------------------------------------------------------------------------
*/
......@@ -173,7 +173,7 @@ typedef struct PortalData
bool atStart;
bool atEnd;
bool posOverflow;
long portalPos;
int64 portalPos;
/* Presentation data, primarily used by the pg_cursors system view */
TimestampTz creation_time; /* time at which this portal was defined */
......
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