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Render infinite date/timestamps as 'infinity' for json/jsonb

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Commit ab14a73a6c raised an error in these cases and later the
behaviour was copied to jsonb. This is what the XML code, which we
then adopted, does, as the XSD types don't accept infinite values.
However, json dates and timestamps are just strings as far as json is
concerned, so there is no reason not to render these values as
'infinity'.

The json portion of this is backpatched to 9.4 where the behaviour was
introduced. The jsonb portion only affects the development branch.

Per gripe on pgsql-general.
This commit is contained in:
Andrew Dunstan 2015-02-26 12:25:21 -05:00
parent fd6a3f3ad4
commit bda76c1c8c
8 changed files with 164 additions and 48 deletions
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43
src/backend/utils/adt/json.c
View File

@ -32,6 +32,9 @@
#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
@ -1436,20 +1439,18 @@ datum_to_json(Datum val, bool is_null, StringInfo result,
date = DatumGetDateADT(val);
/* XSD doesn't support infinite values */
if (DATE_NOT_FINITE(date))
ereport(ERROR,
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
errmsg("date out of range"),
errdetail("JSON does not support infinite date values.")));
{
/* we have to format infinity ourselves */
appendStringInfoString(result,DT_INFINITY);
}
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:
@ -1461,20 +1462,20 @@ datum_to_json(Datum val, bool is_null, StringInfo result,
timestamp = DatumGetTimestamp(val);
/* XSD doesn't support infinite values */
if (TIMESTAMP_NOT_FINITE(timestamp))
ereport(ERROR,
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
errmsg("timestamp out of range"),
errdetail("JSON does not support infinite timestamp values.")));
{
/* we have to format infinity ourselves */
appendStringInfoString(result,DT_INFINITY);
}
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:
@ -1488,20 +1489,20 @@ datum_to_json(Datum val, bool is_null, StringInfo result,
timestamp = DatumGetTimestamp(val);
/* XSD doesn't support infinite values */
if (TIMESTAMP_NOT_FINITE(timestamp))
ereport(ERROR,
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
errmsg("timestamp out of range"),
errdetail("JSON does not support infinite timestamp values.")));
{
/* we have to format infinity ourselves */
appendStringInfoString(result,DT_INFINITY);
}
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:

61
src/backend/utils/adt/jsonb.c
View File

@ -28,6 +28,14 @@
#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;
@ -714,23 +722,21 @@ datum_to_jsonb(Datum val, bool is_null, JsonbInState *result,
char buf[MAXDATELEN + 1];
date = DatumGetDateADT(val);
jb.type = jbvString;
/* XSD doesn't support infinite values */
if (DATE_NOT_FINITE(date))
ereport(ERROR,
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
errmsg("date out of range"),
errdetail("JSON does not support infinite date values.")));
{
jb.val.string.len = strlen(DT_INFINITY);
jb.val.string.val = pstrdup(DT_INFINITY);
}
else
{
j2date(date + POSTGRES_EPOCH_JDATE,
&(tm.tm_year), &(tm.tm_mon), &(tm.tm_mday));
EncodeDateOnly(&tm, USE_XSD_DATES, buf);
jb.val.string.len = strlen(buf);
jb.val.string.val = pstrdup(buf);
}
jb.type = jbvString;
jb.val.string.len = strlen(buf);
jb.val.string.val = pstrdup(buf);
}
break;
case JSONBTYPE_TIMESTAMP:
@ -741,23 +747,24 @@ datum_to_jsonb(Datum val, bool is_null, JsonbInState *result,
char buf[MAXDATELEN + 1];
timestamp = DatumGetTimestamp(val);
jb.type = jbvString;
/* XSD doesn't support infinite values */
if (TIMESTAMP_NOT_FINITE(timestamp))
ereport(ERROR,
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
errmsg("timestamp out of range"),
errdetail("JSON does not support infinite timestamp values.")));
{
jb.val.string.len = strlen(DT_INFINITY);
jb.val.string.val = pstrdup(DT_INFINITY);
}
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:
@ -770,23 +777,23 @@ datum_to_jsonb(Datum val, bool is_null, JsonbInState *result,
char buf[MAXDATELEN + 1];
timestamp = DatumGetTimestamp(val);
jb.type = jbvString;
/* XSD doesn't support infinite values */
if (TIMESTAMP_NOT_FINITE(timestamp))
ereport(ERROR,
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
errmsg("timestamp out of range"),
errdetail("JSON does not support infinite timestamp values.")));
{
jb.val.string.len = strlen(DT_INFINITY);
jb.val.string.val = pstrdup(DT_INFINITY);
}
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:

24
src/test/regress/expected/json.out
View File

@ -426,6 +426,30 @@ select to_json(timestamptz '2014-05-28 12:22:35.614298-04');
(1 row)
COMMIT;
select to_json(date '2014-05-28');
to_json
--------------
"2014-05-28"
(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(timestamptz 'Infinity');
to_json
------------
"infinity"
(1 row)
--json_agg
SELECT json_agg(q)
FROM ( SELECT $$a$$ || x AS b, y AS c,

24
src/test/regress/expected/json_1.out
View File

@ -426,6 +426,30 @@ select to_json(timestamptz '2014-05-28 12:22:35.614298-04');
(1 row)
COMMIT;
select to_json(date '2014-05-28');
to_json
--------------
"2014-05-28"
(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(timestamptz 'Infinity');
to_json
------------
"infinity"
(1 row)
--json_agg
SELECT json_agg(q)
FROM ( SELECT $$a$$ || x AS b, y AS c,

24
src/test/regress/expected/jsonb.out
View File

@ -330,6 +330,30 @@ select to_jsonb(timestamptz '2014-05-28 12:22:35.614298-04');
(1 row)
COMMIT;
select to_jsonb(date '2014-05-28');
to_jsonb
--------------
"2014-05-28"
(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(timestamptz 'Infinity');
to_jsonb
------------
"infinity"
(1 row)
--jsonb_agg
CREATE TEMP TABLE rows AS
SELECT x, 'txt' || x as y

24
src/test/regress/expected/jsonb_1.out
View File

@ -330,6 +330,30 @@ select to_jsonb(timestamptz '2014-05-28 12:22:35.614298-04');
(1 row)
COMMIT;
select to_jsonb(date '2014-05-28');
to_jsonb
--------------
"2014-05-28"
(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(timestamptz 'Infinity');
to_jsonb
------------
"infinity"
(1 row)
--jsonb_agg
CREATE TEMP TABLE rows AS
SELECT x, 'txt' || x as y

6
src/test/regress/sql/json.sql
View File

@ -111,6 +111,12 @@ SET LOCAL TIME ZONE -8;
select to_json(timestamptz '2014-05-28 12:22:35.614298-04');
COMMIT;
select to_json(date '2014-05-28');
select to_json(date 'Infinity');
select to_json(timestamp 'Infinity');
select to_json(timestamptz 'Infinity');
--json_agg
SELECT json_agg(q)

6
src/test/regress/sql/jsonb.sql
View File

@ -74,6 +74,12 @@ SET LOCAL TIME ZONE -8;
select to_jsonb(timestamptz '2014-05-28 12:22:35.614298-04');
COMMIT;
select to_jsonb(date '2014-05-28');
select to_jsonb(date 'Infinity');
select to_jsonb(timestamp 'Infinity');
select to_jsonb(timestamptz 'Infinity');
--jsonb_agg
CREATE TEMP TABLE rows AS