diff options
Diffstat (limited to 'src/include/access/tableam.h')
| -rw-r--r-- | src/include/access/tableam.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/include/access/tableam.h b/src/include/access/tableam.h index 06eae2337a3..53b58c51da2 100644 --- a/src/include/access/tableam.h +++ b/src/include/access/tableam.h @@ -573,6 +573,16 @@ typedef struct TableAmRoutine uint64 (*relation_size) (Relation rel, ForkNumber forkNumber); + /* + * This callback should return true if the relation requires a TOAST table + * and false if it does not. It may wish to examine the relation's + * tuple descriptor before making a decision, but if it uses some other + * method of storing large values (or if it does not support them) it can + * simply return false. + */ + bool (*relation_needs_toast_table) (Relation rel); + + /* ------------------------------------------------------------------------ * Planner related functions. * ------------------------------------------------------------------------ @@ -1585,6 +1595,16 @@ table_relation_size(Relation rel, ForkNumber forkNumber) return rel->rd_tableam->relation_size(rel, forkNumber); } +/* + * table_needs_toast_table - does this relation need a toast table? + */ +static inline bool +table_relation_needs_toast_table(Relation rel) +{ + return rel->rd_tableam->relation_needs_toast_table(rel); +} + + /* ---------------------------------------------------------------------------- * Planner related functionality * ---------------------------------------------------------------------------- |