diff options
Diffstat (limited to 'src/backend/access/common/heaptuple.c')
| -rw-r--r-- | src/backend/access/common/heaptuple.c | 53 |
1 files changed, 52 insertions, 1 deletions
diff --git a/src/backend/access/common/heaptuple.c b/src/backend/access/common/heaptuple.c index 7ec314379ba..edd90c8a56f 100644 --- a/src/backend/access/common/heaptuple.c +++ b/src/backend/access/common/heaptuple.c @@ -16,7 +16,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/access/common/heaptuple.c,v 1.107 2006/06/27 02:51:39 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/access/common/heaptuple.c,v 1.108 2006/07/02 02:23:18 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -1738,3 +1738,54 @@ heap_addheader(int natts, /* max domain index */ return tuple; } + +/* + * build_class_tuple + * + * XXX Natts_pg_class_fixed is a hack - see pg_class.h + */ +HeapTuple +build_class_tuple(Form_pg_class pgclass, ArrayType *options) +{ + HeapTuple tuple; + HeapTupleHeader td; + Form_pg_class data; /* contents of tuple */ + Size len; + Size size; + int hoff; + + /* size of pg_class tuple with options */ + if (options) + size = offsetof(FormData_pg_class, reloptions) + VARATT_SIZE(options); + else + size = CLASS_TUPLE_SIZE; + + /* header needs no null bitmap */ + hoff = offsetof(HeapTupleHeaderData, t_bits); + hoff += sizeof(Oid); + hoff = MAXALIGN(hoff); + len = hoff + size; + + tuple = (HeapTuple) palloc0(HEAPTUPLESIZE + len); + tuple->t_data = td = (HeapTupleHeader) ((char *) tuple + HEAPTUPLESIZE); + + tuple->t_len = len; + ItemPointerSetInvalid(&(tuple->t_self)); + tuple->t_tableOid = InvalidOid; + + /* we don't bother to fill the Datum fields */ + + td->t_natts = Natts_pg_class_fixed; + td->t_hoff = hoff; + td->t_infomask = HEAP_HASOID; + + data = (Form_pg_class) ((char *) td + hoff); + memcpy(data, pgclass, CLASS_TUPLE_SIZE); + if (options) + { + td->t_natts++; + memcpy(data->reloptions, options, VARATT_SIZE(options)); + } + + return tuple; +} |