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Thank you for applying patch --- regexp_replace. 

An attached patch is a small additional improvement.

This patch use appendStringInfoText instead of appendStringInfoString.
There is an overhead of PG_TEXT_GET_STR when appendStringInfoString is
executed by text type. This can be reduced by appendStringInfoText.

Atsushi Ogawa
This commit is contained in:
Bruce Momjian 2005-07-29 03:17:55 +00:00
parent 5d27bf20b4
commit 722f31f786
1 changed files with 6 additions and 6 deletions
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12
src/backend/utils/adt/varlena.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/adt/varlena.c,v 1.129 2005/07/21 04:41:43 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/varlena.c,v 1.130 2005/07/29 03:17:55 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -2064,7 +2064,7 @@ appendStringInfoRegexpSubstr(StringInfo str, text *replace_text,
{
text *append_text = text_substring(PointerGetDatum(replace_text),
substr_start, ch_cnt, false);
appendStringInfoString(str, PG_TEXT_GET_STR(append_text));
appendStringInfoText(str, append_text);
pfree(append_text);
}
substr_start += ch_cnt + 1;
@ -2099,7 +2099,7 @@ appendStringInfoRegexpSubstr(StringInfo str, text *replace_text,
/* Copy the text that is back reference of regexp. */
text *append_text = text_substring(PointerGetDatum(src_text),
so + 1, (eo - so), false);
appendStringInfoString(str, PG_TEXT_GET_STR(append_text));
appendStringInfoText(str, append_text);
pfree(append_text);
}
}
@ -2169,7 +2169,7 @@ replace_text_regexp(PG_FUNCTION_ARGS)
text *left_text = text_substring(PointerGetDatum(src_text),
data_pos + 1,
pmatch[0].rm_so - data_pos, false);
appendStringInfoString(str, PG_TEXT_GET_STR(left_text));
appendStringInfoText(str, left_text);
pfree(left_text);
}
@ -2180,7 +2180,7 @@ replace_text_regexp(PG_FUNCTION_ARGS)
if (have_escape)
appendStringInfoRegexpSubstr(str, replace_text, pmatch, src_text);
else
appendStringInfoString(str, PG_TEXT_GET_STR(replace_text));
appendStringInfoText(str, replace_text);
search_start = data_pos = pmatch[0].rm_eo;
@ -2205,7 +2205,7 @@ replace_text_regexp(PG_FUNCTION_ARGS)
{
text *right_text = text_substring(PointerGetDatum(src_text),
data_pos + 1, -1, true);
appendStringInfoString(str, PG_TEXT_GET_STR(right_text));
appendStringInfoText(str, right_text);
pfree(right_text);
}