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Added a function to retrieve columns of a prepared statement

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This commit is contained in:
Alexey Romanov
2010-12-09 18:48:55 +03:00
parent 9913f3681b
commit 9f1f3492fc
4 changed files with 56 additions and 27 deletions
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11
src/sqlite3.erl
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@@ -16,7 +16,8 @@
-export([start_link/1, start_link/2]).
-export([stop/0, close/1]).
-export([sql_exec/1, sql_exec/2, sql_exec/3]).
-export([prepare/2, bind/3, next/2, reset/2, clear_bindings/2, finalize/2]).
-export([prepare/2, bind/3, next/2, reset/2, clear_bindings/2, finalize/2,
columns/2]).
-export([create_table/2, create_table/3, create_table/4]).
-export([list_tables/0, list_tables/1, table_info/1, table_info/2]).
-export([write/2, write/3, write_many/2, write_many/3]).
@@ -192,6 +193,10 @@ clear_bindings(Db, Ref) ->
finalize(Db, Ref) ->
gen_server:call(Db, {finalize, Ref}).
-spec columns(atom(), reference()) -> sql_non_query_result().
columns(Db, Ref) ->
gen_server:call(Db, {columns, Ref}).
%%--------------------------------------------------------------------
%% @spec create_table(Tbl :: atom(), TblInfo :: [{atom(), atom()}]) -> sql_non_query_result()
%% @doc
@@ -785,6 +790,7 @@ get_priv_dir() ->
-define(PREPARED_RESET, 8).
-define(PREPARED_CLEAR_BINDINGS, 9).
-define(PREPARED_FINALIZE, 10).
-define(PREPARED_COLUMNS, 11).
create_port_cmd(DbFile) ->
atom_to_list(?DRIVER_NAME) ++ " " ++ DbFile.
@@ -824,7 +830,8 @@ exec(Port, {Cmd, Index}) when is_integer(Index) ->
next -> ?PREPARED_STEP;
reset -> ?PREPARED_RESET;
clear_bindings -> ?PREPARED_CLEAR_BINDINGS;
finalize -> ?PREPARED_FINALIZE
finalize -> ?PREPARED_FINALIZE;
columns -> ?PREPARED_COLUMNS
end,
Bin = term_to_binary(Index),
port_control(Port, CmdCode, Bin),