diff options
Diffstat (limited to 'lib/mnesia/src/mnesia_schema.erl')
| -rw-r--r-- | lib/mnesia/src/mnesia_schema.erl | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/lib/mnesia/src/mnesia_schema.erl b/lib/mnesia/src/mnesia_schema.erl index b3f06322d9..360da8a17d 100644 --- a/lib/mnesia/src/mnesia_schema.erl +++ b/lib/mnesia/src/mnesia_schema.erl @@ -37,6 +37,7 @@ change_table_copy_type/3, change_table_access_mode/2, change_table_load_order/2, + change_table_majority/2, change_table_frag/2, clear_table/1, create_table/1, @@ -1508,6 +1509,43 @@ make_change_table_load_order(Tab, LoadOrder) -> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +change_table_majority(Tab, Majority) when is_boolean(Majority) -> + schema_transaction(fun() -> do_change_table_majority(Tab, Majority) end). + +do_change_table_majority(schema, _Majority) -> + mnesia:abort({bad_type, schema}); +do_change_table_majority(Tab, Majority) -> + TidTs = get_tid_ts_and_lock(schema, write), + get_tid_ts_and_lock(Tab, none), + insert_schema_ops(TidTs, make_change_table_majority(Tab, Majority)). + +make_change_table_majority(Tab, Majority) -> + ensure_writable(schema), + Cs = incr_version(val({Tab, cstruct})), + ensure_active(Cs), + OldMajority = Cs#cstruct.majority, + Cs2 = Cs#cstruct{majority = Majority}, + FragOps = case lists:keyfind(base_table, 1, Cs#cstruct.frag_properties) of + {_, Tab} -> + FragNames = mnesia_frag:frag_names(Tab) -- [Tab], + lists:map( + fun(T) -> + get_tid_ts_and_lock(Tab, none), + CsT = incr_version(val({T, cstruct})), + ensure_active(CsT), + CsT2 = CsT#cstruct{majority = Majority}, + verify_cstruct(CsT2), + {op, change_table_majority, cs2list(CsT2), + OldMajority, Majority} + end, FragNames); + false -> []; + {_, _} -> mnesia:abort({bad_type, Tab}) + end, + verify_cstruct(Cs2), + [{op, change_table_majority, cs2list(Cs2), OldMajority, Majority} | FragOps]. + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + write_table_property(Tab, Prop) when is_tuple(Prop), size(Prop) >= 1 -> schema_transaction(fun() -> do_write_table_property(Tab, Prop) end); write_table_property(Tab, Prop) -> |