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Extend the date type to support infinity and -infinity, analogously to

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the timestamp types.  Turns out this doesn't even reduce the available
range of dates, since the restriction to dates that work for Julian-date
arithmetic is much tighter than the int32 range anyway.  Per a longstanding
TODO item.
This commit is contained in:
Tom Lane
2008-10-14 17:12:33 +00:00
parent 791359fe0e
commit a303e4dc43
9 changed files with 206 additions and 65 deletions
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7
src/backend/utils/adt/xml.c
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/backend/utils/adt/xml.c,v 1.78 2008/10/09 15:49:04 tgl Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/xml.c,v 1.79 2008/10/14 17:12:33 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -1632,6 +1632,11 @@ map_sql_value_to_xml_value(Datum value, Oid type)
char buf[MAXDATELEN + 1];
date = DatumGetDateADT(value);
/* 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")));
j2date(date + POSTGRES_EPOCH_JDATE,
&(tm.tm_year), &(tm.tm_mon), &(tm.tm_mday));
EncodeDateOnly(&tm, USE_XSD_DATES, buf);