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Fix incorrect translation of minus-infinity datetimes for json/jsonb.

Browse Source 
Commit bda76c1c8c caused both plus and
minus infinity to be rendered as "infinity", which is not only wrong
but inconsistent with the pre-9.4 behavior of to_json().  Fix that by
duplicating the coding in date_out/timestamp_out/timestamptz_out more
closely.  Per bug #13687 from Stepan Perlov.  Back-patch to 9.4, like
the previous commit.

In passing, also re-pgindent json.c, since it had gotten a bit messed up by
recent patches (and I was already annoyed by indentation-related problems
in back-patching this fix ...)
pull/7/merge
Tom Lane 10 years ago
parent 984ae04a2c
commit d435542583
10 changed files with 90 additions and 86 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 3
      src/backend/utils/adt/date.c
  2. 40
      src/backend/utils/adt/json.c
  3. 52
      src/backend/utils/adt/jsonb.c
  4. 3
      src/backend/utils/adt/timestamp.c
  5. 1
      src/include/utils/date.h
  6. 1
      src/include/utils/datetime.h
  7. 18
      src/test/regress/expected/json.out
  8. 18
      src/test/regress/expected/jsonb.out
  9. 3
      src/test/regress/sql/json.sql
  10. 3
      src/test/regress/sql/jsonb.sql

3
src/backend/utils/adt/date.c
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@ -40,7 +40,6 @@
#endif
static void EncodeSpecialDate(DateADT dt, char *str);
static int time2tm(TimeADT time, struct pg_tm * tm, fsec_t *fsec);
static int timetz2tm(TimeTzADT *time, struct pg_tm * tm, fsec_t *fsec, int *tzp);
static int tm2time(struct pg_tm * tm, fsec_t fsec, TimeADT *result);
@ -273,7 +272,7 @@ make_date(PG_FUNCTION_ARGS)
/*
* Convert reserved date values to string.
*/
static void
void
EncodeSpecialDate(DateADT dt, char *str)
{
if (DATE_IS_NOBEGIN(dt))

40
src/backend/utils/adt/json.c
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@ -32,9 +32,6 @@
#include "utils/typcache.h"
#include "utils/syscache.h"
/* String to output for infinite dates and timestamps */
#define DT_INFINITY "\"infinity\""
/*
* The context of the parser is maintained by the recursive descent
* mechanism, but is passed explicitly to the error reporting routine
@ -365,8 +362,8 @@ json_count_array_elements(JsonLexContext *lex)
/*
* It's safe to do this with a shallow copy because the lexical routines
* don't scribble on the input. They do scribble on the other pointers etc,
* so doing this with a copy makes that safe.
* don't scribble on the input. They do scribble on the other pointers
* etc, so doing this with a copy makes that safe.
*/
memcpy(&copylex, lex, sizeof(JsonLexContext));
copylex.strval = NULL; /* not interested in values here */
@ -1492,19 +1489,16 @@ datum_to_json(Datum val, bool is_null, StringInfo result,
char buf[MAXDATELEN + 1];
date = DatumGetDateADT(val);
/* Same as date_out(), but forcing DateStyle */
if (DATE_NOT_FINITE(date))
{
/* we have to format infinity ourselves */
appendStringInfoString(result, DT_INFINITY);
}
EncodeSpecialDate(date, buf);
else
{
j2date(date + POSTGRES_EPOCH_JDATE,
&(tm.tm_year), &(tm.tm_mon), &(tm.tm_mday));
EncodeDateOnly(&tm, USE_XSD_DATES, buf);
appendStringInfo(result, "\"%s\"", buf);
}
appendStringInfo(result, "\"%s\"", buf);
}
break;
case JSONTYPE_TIMESTAMP:
@ -1515,21 +1509,16 @@ datum_to_json(Datum val, bool is_null, StringInfo result,
char buf[MAXDATELEN + 1];
timestamp = DatumGetTimestamp(val);
/* Same as timestamp_out(), but forcing DateStyle */
if (TIMESTAMP_NOT_FINITE(timestamp))
{
/* we have to format infinity ourselves */
appendStringInfoString(result, DT_INFINITY);
}
EncodeSpecialTimestamp(timestamp, buf);
else if (timestamp2tm(timestamp, NULL, &tm, &fsec, NULL, NULL) == 0)
{
EncodeDateTime(&tm, fsec, false, 0, NULL, USE_XSD_DATES, buf);
appendStringInfo(result, "\"%s\"", buf);
}
else
ereport(ERROR,
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
errmsg("timestamp out of range")));
appendStringInfo(result, "\"%s\"", buf);
}
break;
case JSONTYPE_TIMESTAMPTZ:
@ -1541,22 +1530,17 @@ datum_to_json(Datum val, bool is_null, StringInfo result,
const char *tzn = NULL;
char buf[MAXDATELEN + 1];
timestamp = DatumGetTimestamp(val);
timestamp = DatumGetTimestampTz(val);
/* Same as timestamptz_out(), but forcing DateStyle */
if (TIMESTAMP_NOT_FINITE(timestamp))
{
/* we have to format infinity ourselves */
appendStringInfoString(result, DT_INFINITY);
}
EncodeSpecialTimestamp(timestamp, buf);
else if (timestamp2tm(timestamp, &tz, &tm, &fsec, &tzn, NULL) == 0)
{
EncodeDateTime(&tm, fsec, true, tz, tzn, USE_XSD_DATES, buf);
appendStringInfo(result, "\"%s\"", buf);
}
else
ereport(ERROR,
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
errmsg("timestamp out of range")));
appendStringInfo(result, "\"%s\"", buf);
}
break;
case JSONTYPE_JSON:

52
src/backend/utils/adt/jsonb.c
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@ -28,14 +28,6 @@
#include "utils/syscache.h"
#include "utils/typcache.h"
/*
* String to output for infinite dates and timestamps.
* Note the we don't use embedded quotes, unlike for json, because
* we store jsonb strings dequoted.
*/
#define DT_INFINITY "infinity"
typedef struct JsonbInState
{
JsonbParseState *parseState;
@ -798,22 +790,19 @@ datum_to_jsonb(Datum val, bool is_null, JsonbInState *result,
char buf[MAXDATELEN + 1];
date = DatumGetDateADT(val);
jb.type = jbvString;
/* Same as date_out(), but forcing DateStyle */
if (DATE_NOT_FINITE(date))
{
jb.val.string.len = strlen(DT_INFINITY);
jb.val.string.val = pstrdup(DT_INFINITY);
}
EncodeSpecialDate(date, buf);
else
{
j2date(date + POSTGRES_EPOCH_JDATE,
&(tm.tm_year), &(tm.tm_mon), &(tm.tm_mday));
EncodeDateOnly(&tm, USE_XSD_DATES, buf);
}
jb.type = jbvString;
jb.val.string.len = strlen(buf);
jb.val.string.val = pstrdup(buf);
}
}
break;
case JSONBTYPE_TIMESTAMP:
{
@ -823,24 +812,18 @@ datum_to_jsonb(Datum val, bool is_null, JsonbInState *result,
char buf[MAXDATELEN + 1];
timestamp = DatumGetTimestamp(val);
jb.type = jbvString;
/* Same as timestamp_out(), but forcing DateStyle */
if (TIMESTAMP_NOT_FINITE(timestamp))
{
jb.val.string.len = strlen(DT_INFINITY);
jb.val.string.val = pstrdup(DT_INFINITY);
}
EncodeSpecialTimestamp(timestamp, buf);
else if (timestamp2tm(timestamp, NULL, &tm, &fsec, NULL, NULL) == 0)
{
EncodeDateTime(&tm, fsec, false, 0, NULL, USE_XSD_DATES, buf);
jb.val.string.len = strlen(buf);
jb.val.string.val = pstrdup(buf);
}
else
ereport(ERROR,
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
errmsg("timestamp out of range")));
jb.type = jbvString;
jb.val.string.len = strlen(buf);
jb.val.string.val = pstrdup(buf);
}
break;
case JSONBTYPE_TIMESTAMPTZ:
@ -852,24 +835,19 @@ datum_to_jsonb(Datum val, bool is_null, JsonbInState *result,
const char *tzn = NULL;
char buf[MAXDATELEN + 1];
timestamp = DatumGetTimestamp(val);
jb.type = jbvString;
timestamp = DatumGetTimestampTz(val);
/* Same as timestamptz_out(), but forcing DateStyle */
if (TIMESTAMP_NOT_FINITE(timestamp))
{
jb.val.string.len = strlen(DT_INFINITY);
jb.val.string.val = pstrdup(DT_INFINITY);
}
EncodeSpecialTimestamp(timestamp, buf);
else if (timestamp2tm(timestamp, &tz, &tm, &fsec, &tzn, NULL) == 0)
{
EncodeDateTime(&tm, fsec, true, tz, tzn, USE_XSD_DATES, buf);
jb.val.string.len = strlen(buf);
jb.val.string.val = pstrdup(buf);
}
else
ereport(ERROR,
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
errmsg("timestamp out of range")));
jb.type = jbvString;
jb.val.string.len = strlen(buf);
jb.val.string.val = pstrdup(buf);
}
break;
case JSONBTYPE_JSONCAST:

3
src/backend/utils/adt/timestamp.c
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@ -68,7 +68,6 @@ typedef struct
static TimeOffset time2t(const int hour, const int min, const int sec, const fsec_t fsec);
static void EncodeSpecialTimestamp(Timestamp dt, char *str);
static Timestamp dt2local(Timestamp dt, int timezone);
static void AdjustTimestampForTypmod(Timestamp *time, int32 typmod);
static void AdjustIntervalForTypmod(Interval *interval, int32 typmod);
@ -1500,7 +1499,7 @@ make_interval(PG_FUNCTION_ARGS)
/* EncodeSpecialTimestamp()
* Convert reserved timestamp data type to string.
*/
static void
void
EncodeSpecialTimestamp(Timestamp dt, char *str)
{
if (TIMESTAMP_IS_NOBEGIN(dt))

1
src/include/utils/date.h
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@ -90,6 +90,7 @@ typedef struct
/* date.c */
extern double date2timestamp_no_overflow(DateADT dateVal);
extern void EncodeSpecialDate(DateADT dt, char *str);
extern Datum date_in(PG_FUNCTION_ARGS);
extern Datum date_out(PG_FUNCTION_ARGS);

1
src/include/utils/datetime.h
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@ -326,6 +326,7 @@ extern void EncodeDateOnly(struct pg_tm * tm, int style, char *str);
extern void EncodeTimeOnly(struct pg_tm * tm, fsec_t fsec, bool print_tz, int tz, int style, char *str);
extern void EncodeDateTime(struct pg_tm * tm, fsec_t fsec, bool print_tz, int tz, const char *tzn, int style, char *str);
extern void EncodeInterval(struct pg_tm * tm, fsec_t fsec, int style, char *str);
extern void EncodeSpecialTimestamp(Timestamp dt, char *str);
extern int ValidateDate(int fmask, bool isjulian, bool is2digits, bool bc,
struct pg_tm * tm);

18
src/test/regress/expected/json.out
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@ -418,18 +418,36 @@ select to_json(date 'Infinity');
"infinity"
(1 row)
select to_json(date '-Infinity');
to_json
-------------
"-infinity"
(1 row)
select to_json(timestamp 'Infinity');
to_json
------------
"infinity"
(1 row)
select to_json(timestamp '-Infinity');
to_json
-------------
"-infinity"
(1 row)
select to_json(timestamptz 'Infinity');
to_json
------------
"infinity"
(1 row)
select to_json(timestamptz '-Infinity');
to_json
-------------
"-infinity"
(1 row)
--json_agg
SELECT json_agg(q)
FROM ( SELECT $$a$$ || x AS b, y AS c,

18
src/test/regress/expected/jsonb.out
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@ -314,18 +314,36 @@ select to_jsonb(date 'Infinity');
"infinity"
(1 row)
select to_jsonb(date '-Infinity');
to_jsonb
-------------
"-infinity"
(1 row)
select to_jsonb(timestamp 'Infinity');
to_jsonb
------------
"infinity"
(1 row)
select to_jsonb(timestamp '-Infinity');
to_jsonb
-------------
"-infinity"
(1 row)
select to_jsonb(timestamptz 'Infinity');
to_jsonb
------------
"infinity"
(1 row)
select to_jsonb(timestamptz '-Infinity');
to_jsonb
-------------
"-infinity"
(1 row)
--jsonb_agg
CREATE TEMP TABLE rows AS
SELECT x, 'txt' || x as y

3
src/test/regress/sql/json.sql
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@ -116,8 +116,11 @@ COMMIT;
select to_json(date '2014-05-28');
select to_json(date 'Infinity');
select to_json(date '-Infinity');
select to_json(timestamp 'Infinity');
select to_json(timestamp '-Infinity');
select to_json(timestamptz 'Infinity');
select to_json(timestamptz '-Infinity');
--json_agg

3
src/test/regress/sql/jsonb.sql
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@ -76,8 +76,11 @@ COMMIT;
select to_jsonb(date '2014-05-28');
select to_jsonb(date 'Infinity');
select to_jsonb(date '-Infinity');
select to_jsonb(timestamp 'Infinity');
select to_jsonb(timestamp '-Infinity');
select to_jsonb(timestamptz 'Infinity');
select to_jsonb(timestamptz '-Infinity');
--jsonb_agg

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