database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-11-22 12:22:45 +03:00
Code Activity

Add SysCacheGetAttrNotNull for guaranteed not-null attrs

Browse Source 
When extracting an attr from a cached tuple in the syscache with
SysCacheGetAttr the isnull parameter must be checked in case the
attr cannot be NULL.  For cases when this is known beforehand, a
wrapper is introduced which perform the errorhandling internally
on behalf of the caller, invoking an elog in case of a NULL attr.

Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Reviewed-by: Peter Eisentraut <peter.eisentraut@enterprisedb.com>
Reviewed-by: David Rowley <dgrowleyml@gmail.com>
Discussion: https://postgr.es/m/AD76405E-DB45-46B6-941F-17B1EB3A9076@yesql.se
This commit is contained in:
Daniel Gustafsson
2023-03-25 22:49:33 +01:00
parent e33967b13b
commit d435f15fff
38 changed files with 232 additions and 452 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
src/backend/catalog/index.c
View File

@@ -1320,14 +1320,12 @@ index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId,
indexTuple = SearchSysCache1(INDEXRELID, ObjectIdGetDatum(oldIndexId));
if (!HeapTupleIsValid(indexTuple))
elog(ERROR, "cache lookup failed for index %u", oldIndexId);
indclassDatum = SysCacheGetAttr(INDEXRELID, indexTuple,
Anum_pg_index_indclass, &isnull);
Assert(!isnull);
indclassDatum = SysCacheGetAttrNotNull(INDEXRELID, indexTuple,
Anum_pg_index_indclass);
indclass = (oidvector *) DatumGetPointer(indclassDatum);
colOptionDatum = SysCacheGetAttr(INDEXRELID, indexTuple,
Anum_pg_index_indoption, &isnull);
Assert(!isnull);
colOptionDatum = SysCacheGetAttrNotNull(INDEXRELID, indexTuple,
Anum_pg_index_indoption);
indcoloptions = (int2vector *) DatumGetPointer(colOptionDatum);
/* Fetch options of index if any */
@@ -1347,9 +1345,8 @@ index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId,
Datum exprDatum;
char *exprString;
exprDatum = SysCacheGetAttr(INDEXRELID, indexTuple,
Anum_pg_index_indexprs, &isnull);
Assert(!isnull);
exprDatum = SysCacheGetAttrNotNull(INDEXRELID, indexTuple,
Anum_pg_index_indexprs);
exprString = TextDatumGetCString(exprDatum);
indexExprs = (List *) stringToNode(exprString);
pfree(exprString);
@@ -1359,9 +1356,8 @@ index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId,
Datum predDatum;
char *predString;
predDatum = SysCacheGetAttr(INDEXRELID, indexTuple,
Anum_pg_index_indpred, &isnull);
Assert(!isnull);
predDatum = SysCacheGetAttrNotNull(INDEXRELID, indexTuple,
Anum_pg_index_indpred);
predString = TextDatumGetCString(predDatum);
indexPreds = (List *) stringToNode(predString);