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Allow interpretation of INTERVALs with more timezone-like syntax.

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Define conversions to and from text for date, time, and timetz.
Have millisecond and microsecond return full # of seconds in those units.
 Previously, only returned full fractional part in those units.
This commit is contained in:
Thomas G. Lockhart
2000-11-11 19:55:19 +00:00
parent ecc367b764
commit 89a99cb686
3 changed files with 183 additions and 8 deletions
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167
src/backend/utils/adt/date.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/date.c,v 1.51 2000/10/29 13:17:33 petere Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/date.c,v 1.52 2000/11/11 19:55:19 thomas Exp $
*
*-------------------------------------------------------------------------
*/
@@ -339,6 +339,61 @@ abstime_date(PG_FUNCTION_ARGS)
}
/* date_text()
* Convert date to text data type.
*/
Datum
date_text(PG_FUNCTION_ARGS)
{
/* Input is a Date, but may as well leave it in Datum form */
Datum date = PG_GETARG_DATUM(0);
text *result;
char *str;
int len;
str = DatumGetCString(DirectFunctionCall1(date_out, date));
len = (strlen(str) + VARHDRSZ);
result = palloc(len);
VARATT_SIZEP(result) = len;
memmove(VARDATA(result), str, (len - VARHDRSZ));
pfree(str);
PG_RETURN_TEXT_P(result);
}
/* text_date()
* Convert text string to date.
* Text type is not null terminated, so use temporary string
* then call the standard input routine.
*/
Datum
text_date(PG_FUNCTION_ARGS)
{
text *str = PG_GETARG_TEXT_P(0);
int i;
char *sp,
*dp,
dstr[MAXDATELEN + 1];
if (VARSIZE(str) - VARHDRSZ > MAXDATELEN)
elog(ERROR, "Bad date external representation (too long)");
sp = VARDATA(str);
dp = dstr;
for (i = 0; i < (VARSIZE(str) - VARHDRSZ); i++)
*dp++ = *sp++;
*dp = '\0';
return DirectFunctionCall1(date_in,
CStringGetDatum(dstr));
}
/*****************************************************************************
* Time ADT
*****************************************************************************/
@@ -576,6 +631,61 @@ time_interval(PG_FUNCTION_ARGS)
}
/* time_text()
* Convert time to text data type.
*/
Datum
time_text(PG_FUNCTION_ARGS)
{
/* Input is a Time, but may as well leave it in Datum form */
Datum time = PG_GETARG_DATUM(0);
text *result;
char *str;
int len;
str = DatumGetCString(DirectFunctionCall1(time_out, time));
len = (strlen(str) + VARHDRSZ);
result = palloc(len);
VARATT_SIZEP(result) = len;
memmove(VARDATA(result), str, (len - VARHDRSZ));
pfree(str);
PG_RETURN_TEXT_P(result);
}
/* text_time()
* Convert text string to time.
* Text type is not null terminated, so use temporary string
* then call the standard input routine.
*/
Datum
text_time(PG_FUNCTION_ARGS)
{
text *str = PG_GETARG_TEXT_P(0);
int i;
char *sp,
*dp,
dstr[MAXDATELEN + 1];
if (VARSIZE(str) - VARHDRSZ > MAXDATELEN)
elog(ERROR, "Bad time external representation (too long)");
sp = VARDATA(str);
dp = dstr;
for (i = 0; i < (VARSIZE(str) - VARHDRSZ); i++)
*dp++ = *sp++;
*dp = '\0';
return DirectFunctionCall1(time_in,
CStringGetDatum(dstr));
}
/*****************************************************************************
* Time With Time Zone ADT
*****************************************************************************/
@@ -851,3 +961,58 @@ datetimetz_timestamp(PG_FUNCTION_ARGS)
PG_RETURN_TIMESTAMP(result);
}
/* timetz_text()
* Convert timetz to text data type.
*/
Datum
timetz_text(PG_FUNCTION_ARGS)
{
/* Input is a Timetz, but may as well leave it in Datum form */
Datum timetz = PG_GETARG_DATUM(0);
text *result;
char *str;
int len;
str = DatumGetCString(DirectFunctionCall1(timetz_out, timetz));
len = (strlen(str) + VARHDRSZ);
result = palloc(len);
VARATT_SIZEP(result) = len;
memmove(VARDATA(result), str, (len - VARHDRSZ));
pfree(str);
PG_RETURN_TEXT_P(result);
}
/* text_timetz()
* Convert text string to timetz.
* Text type is not null terminated, so use temporary string
* then call the standard input routine.
*/
Datum
text_timetz(PG_FUNCTION_ARGS)
{
text *str = PG_GETARG_TEXT_P(0);
int i;
char *sp,
*dp,
dstr[MAXDATELEN + 1];
if (VARSIZE(str) - VARHDRSZ > MAXDATELEN)
elog(ERROR, "Bad timetz external representation (too long)");
sp = VARDATA(str);
dp = dstr;
for (i = 0; i < (VARSIZE(str) - VARHDRSZ); i++)
*dp++ = *sp++;
*dp = '\0';
return DirectFunctionCall1(timetz_in,
CStringGetDatum(dstr));
}