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Commit7dac778

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committed
Add GUC setting for Australian timezones. Uses new GUC boolean callback
functions to clear date cache. Allow regression tests to pass whentimezone set.
1 parent49ce6ff commit7dac778

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12 files changed

+78
-54
lines changed

12 files changed

+78
-54
lines changed

‎doc/src/sgml/runtime.sgml‎

Lines changed: 12 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,5 @@
11
<!--
2-
$Header: /cvsroot/pgsql/doc/src/sgml/runtime.sgml,v 1.67 2001/05/17 17:44:17 petere Exp $
2+
$Header: /cvsroot/pgsql/doc/src/sgml/runtime.sgml,v 1.68 2001/06/18 16:14:43 momjian Exp $
33
-->
44

55
<Chapter Id="runtime">
@@ -1201,6 +1201,17 @@ dynamic_library_path = '/usr/local/lib:/home/my_project/lib:$libdir:$libdir/cont
12011201
</listitem>
12021202
</varlistentry>
12031203

1204+
<term>AUSTRALIAN_TIMEZONES (<type>bool</type>)</term>
1205+
<listitem>
1206+
<para>
1207+
If set to true, <literal>CST</literal>, <literal>EST</literal>,
1208+
and <literal>SAT</literal> are interpreted as Australian
1209+
timezones rather than as North American Central/Eastern
1210+
Timezones and Saturday. The default is false.
1211+
</para>
1212+
</listitem>
1213+
</varlistentry>
1214+
12041215
<varlistentry>
12051216
<indexterm>
12061217
<primary>SSL</primary>

‎src/backend/utils/adt/datetime.c‎

Lines changed: 27 additions & 26 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $Header: /cvsroot/pgsql/src/backend/utils/adt/datetime.c,v 1.64 2001/05/03 22:53:07 tgl Exp $
11+
* $Header: /cvsroot/pgsql/src/backend/utils/adt/datetime.c,v 1.65 2001/06/18 16:14:43 momjian Exp $
1212
*
1313
*-------------------------------------------------------------------------
1414
*/
@@ -22,6 +22,7 @@
2222
#include<limits.h>
2323

2424
#include"miscadmin.h"
25+
#include"utils/guc.h"
2526
#include"utils/datetime.h"
2627

2728
staticintDecodeNumber(intflen,char*field,
@@ -36,7 +37,6 @@ static intDecodeTimezone(char *str, int *tzp);
3637
staticdatetkn*datebsearch(char*key,datetkn*base,unsignedintnel);
3738
staticintDecodeDate(char*str,intfmask,int*tmask,structtm*tm);
3839

39-
#defineUSE_DATE_CACHE 1
4040
#defineROUND_ALL 0
4141

4242
staticintDecodePosixTimezone(char*str,int*val);
@@ -117,11 +117,7 @@ static datetkn datetktbl[] = {
117117
{"cdt",DTZ,NEG(30)},/* Central Daylight Time */
118118
{"cet",TZ,6},/* Central European Time */
119119
{"cetdst",DTZ,12},/* Central European Dayl.Time */
120-
#ifUSE_AUSTRALIAN_RULES
121-
{"cst",TZ,63},/* Australia Eastern Std Time */
122-
#else
123120
{"cst",TZ,NEG(36)},/* Central Standard Time */
124-
#endif
125121
{DCURRENT,RESERV,DTK_CURRENT},/* "current" is always now */
126122
{"dec",MONTH,12},
127123
{"december",MONTH,12},
@@ -134,11 +130,7 @@ static datetkn datetktbl[] = {
134130
{"eet",TZ,12},/* East. Europe, USSR Zone 1 */
135131
{"eetdst",DTZ,18},/* Eastern Europe */
136132
{EPOCH,RESERV,DTK_EPOCH},/* "epoch" reserved for system epoch time */
137-
#ifUSE_AUSTRALIAN_RULES
138-
{"est",TZ,60},/* Australia Eastern Std Time */
139-
#else
140133
{"est",TZ,NEG(30)},/* Eastern Standard Time */
141-
#endif
142134
{"feb",MONTH,2},
143135
{"february",MONTH,2},
144136
{"fri",DOW,5},
@@ -199,11 +191,7 @@ static datetkn datetktbl[] = {
199191
{"pst",TZ,NEG(48)},/* Pacific Standard Time */
200192
{"sadt",DTZ,63},/* S. Australian Dayl. Time */
201193
{"sast",TZ,57},/* South Australian Std Time */
202-
#ifUSE_AUSTRALIAN_RULES
203-
{"sat",TZ,57},
204-
#else
205194
{"sat",DOW,6},
206-
#endif
207195
{"saturday",DOW,6},
208196
{"sep",MONTH,9},
209197
{"sept",MONTH,9},
@@ -247,6 +235,16 @@ static datetkn datetktbl[] = {
247235

248236
staticunsignedintszdatetktbl=sizeofdatetktbl /sizeofdatetktbl[0];
249237

238+
/* Used for SET australian_timezones to override North American ones */
239+
staticdatetknaustralian_datetktbl[]= {
240+
{"cst",TZ,63},/* Australia Eastern Std Time */
241+
{"est",TZ,60},/* Australia Eastern Std Time */
242+
{"sat",TZ,57},
243+
};
244+
245+
staticunsignedintaustralian_szdatetktbl=sizeofaustralian_datetktbl /
246+
sizeofaustralian_datetktbl[0];
247+
250248
staticdatetkndeltatktbl[]= {
251249
/*texttokenlexval */
252250
{"@",IGNORE,0},/* postgres relative time prefix */
@@ -327,13 +325,10 @@ static datetkn deltatktbl[] = {
327325

328326
staticunsignedintszdeltatktbl=sizeofdeltatktbl /sizeofdeltatktbl[0];
329327

330-
#ifUSE_DATE_CACHE
331328
datetkn*datecache[MAXDATEFIELDS]= {NULL};
332329

333330
datetkn*deltacache[MAXDATEFIELDS]= {NULL};
334331

335-
#endif
336-
337332

338333
/*
339334
* Calendar time to Julian date conversions.
@@ -1618,18 +1613,19 @@ DecodeSpecial(int field, char *lowtoken, int *val)
16181613
inttype;
16191614
datetkn*tp;
16201615

1621-
#ifUSE_DATE_CACHE
16221616
if ((datecache[field]!=NULL)
16231617
&& (strncmp(lowtoken,datecache[field]->token,TOKMAXLEN)==0))
16241618
tp=datecache[field];
16251619
else
16261620
{
1627-
#endif
1628-
tp=datebsearch(lowtoken,datetktbl,szdatetktbl);
1629-
#ifUSE_DATE_CACHE
1621+
tp=NULL;
1622+
if (Australian_timezones)
1623+
tp=datebsearch(lowtoken,australian_datetktbl,
1624+
australian_szdatetktbl);
1625+
if (!tp)
1626+
tp=datebsearch(lowtoken,datetktbl,szdatetktbl);
16301627
}
16311628
datecache[field]=tp;
1632-
#endif
16331629
if (tp==NULL)
16341630
{
16351631
type=IGNORE;
@@ -1937,18 +1933,14 @@ DecodeUnits(int field, char *lowtoken, int *val)
19371933
inttype;
19381934
datetkn*tp;
19391935

1940-
#ifUSE_DATE_CACHE
19411936
if ((deltacache[field]!=NULL)
19421937
&& (strncmp(lowtoken,deltacache[field]->token,TOKMAXLEN)==0))
19431938
tp=deltacache[field];
19441939
else
19451940
{
1946-
#endif
19471941
tp=datebsearch(lowtoken,deltatktbl,szdeltatktbl);
1948-
#ifUSE_DATE_CACHE
19491942
}
19501943
deltacache[field]=tp;
1951-
#endif
19521944
if (tp==NULL)
19531945
{
19541946
type=IGNORE;
@@ -2455,3 +2447,12 @@ EncodeTimeSpan(struct tm * tm, double fsec, int style, char *str)
24552447

24562448
return0;
24572449
}/* EncodeTimeSpan() */
2450+
2451+
2452+
voidClearDateCache(booldummy)
2453+
{
2454+
inti;
2455+
2456+
for (i=0;i<MAXDATEFIELDS;i++)
2457+
datecache[i]=NULL;
2458+
}

‎src/backend/utils/misc/guc.c‎

Lines changed: 12 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -4,7 +4,7 @@
44
* Support for grand unified configuration scheme, including SET
55
* command, configuration file, and command line options.
66
*
7-
* $Header: /cvsroot/pgsql/src/backend/utils/misc/guc.c,v 1.38 2001/06/12 22:54:06 tgl Exp $
7+
* $Header: /cvsroot/pgsql/src/backend/utils/misc/guc.c,v 1.39 2001/06/18 16:14:43 momjian Exp $
88
*
99
* Copyright 2000 by PostgreSQL Global Development Group
1010
* Written by Peter Eisentraut <peter_e@gmx.net>.
@@ -33,6 +33,7 @@
3333
#include"parser/parse_expr.h"
3434
#include"storage/proc.h"
3535
#include"tcop/tcopprot.h"
36+
#include"utils/datetime.h"
3637

3738

3839
/* XXX these should be in other modules' header files */
@@ -69,6 +70,8 @@ boolShow_btree_build_stats = false;
6970

7071
boolSQL_inheritance= true;
7172

73+
boolAustralian_timezones= false;
74+
7275
#ifndefPG_KRB_SRVTAB
7376
#definePG_KRB_SRVTAB ""
7477
#endif
@@ -229,6 +232,9 @@ static struct config_bool
229232

230233
{"sql_inheritance",PGC_USERSET,&SQL_inheritance, true,NULL},
231234

235+
{"australian_timezones",PGC_USERSET,&Australian_timezones,
236+
false,ClearDateCache},
237+
232238
{"fixbtree",PGC_POSTMASTER,&FixBTree, true,NULL},
233239

234240
{NULL,0,NULL, false,NULL}
@@ -327,8 +333,8 @@ static struct config_real
327333
DEFAULT_CPU_OPERATOR_COST,0,DBL_MAX,NULL,NULL},
328334

329335
{"geqo_selection_bias",PGC_USERSET,&Geqo_selection_bias,
330-
DEFAULT_GEQO_SELECTION_BIAS,MIN_GEQO_SELECTION_BIAS,
331-
MAX_GEQO_SELECTION_BIAS,NULL,NULL},
336+
DEFAULT_GEQO_SELECTION_BIAS,MIN_GEQO_SELECTION_BIAS,
337+
MAX_GEQO_SELECTION_BIAS,NULL,NULL},
332338

333339
{NULL,0,NULL,0.0,0.0,0.0,NULL,NULL}
334340
};
@@ -360,8 +366,8 @@ static struct config_string
360366
"",NULL,NULL},
361367

362368
{"wal_sync_method",PGC_SIGHUP,&XLOG_sync_method,
363-
XLOG_sync_method_default,
364-
check_xlog_sync_method,assign_xlog_sync_method},
369+
XLOG_sync_method_default,check_xlog_sync_method,
370+
assign_xlog_sync_method},
365371

366372
{NULL,0,NULL,NULL,NULL,NULL}
367373
};
@@ -956,6 +962,7 @@ _ShowOption(enum config_type opttype, struct config_generic *record)
956962
casePGC_BOOL:
957963
val=*((structconfig_bool*)record)->variable ?"on" :"off";
958964
break;
965+
959966
casePGC_INT:
960967
snprintf(buffer,sizeof(buffer),"%d",
961968
*((structconfig_int*)record)->variable);

‎src/backend/utils/misc/postgresql.conf.sample‎

Lines changed: 10 additions & 18 deletions
Original file line numberDiff line numberDiff line change
@@ -84,24 +84,6 @@
8484
#geqo_random_seed = -1 # auto-compute seed
8585

8686

87-
#
88-
#Inheritance
89-
#
90-
#sql_inheritance = true
91-
92-
93-
#
94-
#Deadlock
95-
#
96-
#deadlock_timeout = 1000
97-
98-
99-
#
100-
#Expression Depth Limitation
101-
#
102-
#max_expr_depth = 10000 # min 10
103-
104-
10587
#
10688
#Write-ahead log (WAL)
10789
#
@@ -172,3 +154,13 @@
172154
#trace_lock_oidmin = 16384
173155
#trace_lock_table = 0
174156
#endif
157+
158+
159+
#
160+
#Misc
161+
#
162+
#sql_inheritance = true
163+
#australian_timezones = false
164+
#deadlock_timeout = 1000
165+
#max_expr_depth = 10000 # min 10
166+

‎src/include/utils/datetime.h‎

Lines changed: 3 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -9,7 +9,7 @@
99
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
1010
* Portions Copyright (c) 1994, Regents of the University of California
1111
*
12-
* $Id: datetime.h,v 1.18 2001/05/03 22:53:07 tgl Exp $
12+
* $Id: datetime.h,v 1.19 2001/06/18 16:14:43 momjian Exp $
1313
*
1414
*-------------------------------------------------------------------------
1515
*/
@@ -182,6 +182,7 @@ typedef struct
182182
charvalue;/* this may be unsigned, alas */
183183
}datetkn;
184184

185+
externdatetkndatetktbl[];
185186

186187
/* TMODULO()
187188
* Macro to replace modf(), which is broken on some platforms.
@@ -264,6 +265,7 @@ extern intEncodeTimeSpan(struct tm * tm, double fsec, int style, char *str);
264265

265266
externintDecodeSpecial(intfield,char*lowtoken,int*val);
266267
externintDecodeUnits(intfield,char*lowtoken,int*val);
268+
externvoidClearDateCache(bool);
267269

268270
externintj2day(intjd);
269271

‎src/include/utils/guc.h‎

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -4,7 +4,7 @@
44
* External declarations pertaining to backend/utils/misc/guc.c and
55
* backend/utils/misc/guc-file.l
66
*
7-
* $Id: guc.h,v 1.8 2001/06/12 22:54:06 tgl Exp $
7+
* $Id: guc.h,v 1.9 2001/06/18 16:14:43 momjian Exp $
88
*/
99
#ifndefGUC_H
1010
#defineGUC_H
@@ -70,5 +70,6 @@ extern bool Show_query_stats;
7070
externboolShow_btree_build_stats;
7171

7272
externboolSQL_inheritance;
73+
externboolAustralian_timezones;
7374

7475
#endif/* GUC_H */

‎src/test/regress/expected/horology-no-DST-before-1970.out‎

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -4,6 +4,8 @@
44
--
55
-- date, time arithmetic
66
--
7+
-- needed so tests pass
8+
SET australian_timezones = 'off';
79
SELECT date '1981-02-03' + time '04:05:06' AS "Date + Time";
810
Date + Time
911
------------------------------

‎src/test/regress/expected/horology-solaris-1947.out‎

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -4,6 +4,8 @@
44
--
55
-- date, time arithmetic
66
--
7+
-- needed so tests pass
8+
SET australian_timezones = 'off';
79
SELECT date '1981-02-03' + time '04:05:06' AS "Date + Time";
810
Date + Time
911
------------------------------

‎src/test/regress/expected/horology.out‎

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -4,6 +4,8 @@
44
--
55
-- date, time arithmetic
66
--
7+
-- needed so tests pass
8+
SET australian_timezones = 'off';
79
SELECT date '1981-02-03' + time '04:05:06' AS "Date + Time";
810
Date + Time
911
------------------------------

‎src/test/regress/expected/timestamp.out‎

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -4,6 +4,8 @@
44
-- Shorthand values
55
-- Not directly usable for regression testing since these are not constants.
66
-- So, just try to test parser and hope for the best - thomas 97/04/26
7+
-- needed so tests pass
8+
SET australian_timezones = 'off';
79
SELECT (timestamp 'today' = (timestamp 'yesterday' + interval '1 day')) as "True";
810
True
911
------

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