diff options
Diffstat (limited to 'src/dtree.erl')
| -rw-r--r-- | src/dtree.erl | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/dtree.erl b/src/dtree.erl index 5ff36bd922..f39d8e3ac9 100644 --- a/src/dtree.erl +++ b/src/dtree.erl @@ -32,7 +32,7 @@ -module(dtree). --export([empty/0, insert/4, take/3, take/2, take_all/2, +-export([empty/0, insert/4, take/3, take/2, take_all/2, drop/2, is_defined/2, is_empty/1, smallest/1, size/1]). %%---------------------------------------------------------------------------- @@ -53,6 +53,7 @@ -spec(take/3 :: ([pk()], sk(), ?MODULE()) -> {[kv()], ?MODULE()}). -spec(take/2 :: (sk(), ?MODULE()) -> {[kv()], ?MODULE()}). -spec(take_all/2 :: (sk(), ?MODULE()) -> {[kv()], ?MODULE()}). +-spec(drop/2 :: (pk(), ?MODULE()) -> ?MODULE()). -spec(is_defined/2 :: (sk(), ?MODULE()) -> boolean()). -spec(is_empty/1 :: (?MODULE()) -> boolean()). -spec(smallest/1 :: (?MODULE()) -> kv()). @@ -120,6 +121,11 @@ take_all(SK, {P, S}) -> {KVs, {P1, prune(SKS, PKS, S)}} end. +%% Drop all entries for the given primary key. +drop(PK, {P, S}) -> + SKS = gb_trees:get(PK, P), + {gb_trees:delete(PK, P), prune(SKS, gb_sets:singleton(PK), S)}. + is_defined(SK, {_P, S}) -> gb_trees:is_defined(SK, S). is_empty({P, _S}) -> gb_trees:is_empty(P). |