diff options
Diffstat (limited to 'src/backend/access/common/reloptions.c')
| -rw-r--r-- | src/backend/access/common/reloptions.c | 47 |
1 files changed, 46 insertions, 1 deletions
diff --git a/src/backend/access/common/reloptions.c b/src/backend/access/common/reloptions.c index 7e4afd70bd5..8b3331702c5 100644 --- a/src/backend/access/common/reloptions.c +++ b/src/backend/access/common/reloptions.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/access/common/reloptions.c,v 1.6 2007/11/15 21:14:31 momjian Exp $ + * $PostgreSQL: pgsql/src/backend/access/common/reloptions.c,v 1.7 2007/12/01 23:44:44 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -18,6 +18,7 @@ #include "access/reloptions.h" #include "catalog/pg_type.h" #include "commands/defrem.h" +#include "nodes/makefuncs.h" #include "utils/array.h" #include "utils/builtins.h" #include "utils/rel.h" @@ -150,6 +151,50 @@ transformRelOptions(Datum oldOptions, List *defList, /* + * Convert the text-array format of reloptions into a List of DefElem. + * This is the inverse of transformRelOptions(). + */ +List * +untransformRelOptions(Datum options) +{ + List *result = NIL; + ArrayType *array; + Datum *optiondatums; + int noptions; + int i; + + /* Nothing to do if no options */ + if (options == (Datum) 0) + return result; + + array = DatumGetArrayTypeP(options); + + Assert(ARR_ELEMTYPE(array) == TEXTOID); + + deconstruct_array(array, TEXTOID, -1, false, 'i', + &optiondatums, NULL, &noptions); + + for (i = 0; i < noptions; i++) + { + char *s; + char *p; + Node *val = NULL; + + s = DatumGetCString(DirectFunctionCall1(textout, optiondatums[i])); + p = strchr(s, '='); + if (p) + { + *p++ = '\0'; + val = (Node *) makeString(pstrdup(p)); + } + result = lappend(result, makeDefElem(pstrdup(s), val)); + } + + return result; +} + + +/* * Interpret reloptions that are given in text-array format. * * options: array of "keyword=value" strings, as built by transformRelOptions |