diff options
author | Jan Lehnardt <jan@apache.org> | 2010-05-22 22:28:19 +0000 |
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committer | Jan Lehnardt <jan@apache.org> | 2010-05-22 22:28:19 +0000 |
commit | 6e512ec75fba7372babb04988c6cbf5197a26438 (patch) | |
tree | 12592cb4d99c1868ad017f31226e9d87f07aae78 /src | |
parent | 6a6a8194eeacf556d578f230726eeb3475bc42f6 (diff) |
Major whitespace cleanup, no functional changes.
Patch by Volker Mische.
Closes COUCHDB-771.
git-svn-id: https://svn.apache.org/repos/asf/couchdb/trunk@947344 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'src')
-rw-r--r-- | src/couchdb/couch_httpd_view.erl | 196 |
1 files changed, 104 insertions, 92 deletions
diff --git a/src/couchdb/couch_httpd_view.erl b/src/couchdb/couch_httpd_view.erl index 5aef5f45..7f6104fd 100644 --- a/src/couchdb/couch_httpd_view.erl +++ b/src/couchdb/couch_httpd_view.erl @@ -131,19 +131,19 @@ output_map_view(Req, View, Group, Db, QueryArgs, Keys) -> couch_httpd:etag_respond(Req, CurrentEtag, fun() -> {ok, RowCount} = couch_view:get_row_count(View), FoldAccInit = {Limit, SkipCount, undefined, []}, - {LastReduce, FoldResult} = lists:foldl( - fun(Key, {_, FoldAcc}) -> - FoldlFun = make_view_fold_fun(Req, - QueryArgs#view_query_args{ - }, CurrentEtag, Db, Group#group.current_seq, RowCount, + {LastReduce, FoldResult} = lists:foldl(fun(Key, {_, FoldAcc}) -> + FoldlFun = make_view_fold_fun(Req, QueryArgs#view_query_args{}, + CurrentEtag, Db, Group#group.current_seq, RowCount, #view_fold_helper_funs{ reduce_count = fun couch_view:reduce_to_count/1 }), - {ok, LastReduce, FoldResult} = couch_view:fold(View, FoldlFun, FoldAcc, - make_key_options(QueryArgs#view_query_args{start_key=Key, end_key=Key})), - {LastReduce, FoldResult} - end, {{[],[]}, FoldAccInit}, Keys), - finish_view_fold(Req, RowCount, couch_view:reduce_to_count(LastReduce), FoldResult, [{update_seq,Group#group.current_seq}]) + {ok, LastReduce, FoldResult} = couch_view:fold(View, FoldlFun, + FoldAcc, make_key_options( + QueryArgs#view_query_args{start_key=Key, end_key=Key})), + {LastReduce, FoldResult} + end, {{[],[]}, FoldAccInit}, Keys), + finish_view_fold(Req, RowCount, couch_view:reduce_to_count(LastReduce), + FoldResult, [{update_seq,Group#group.current_seq}]) end). output_reduce_view(Req, Db, View, Group, QueryArgs, nil) -> @@ -154,7 +154,9 @@ output_reduce_view(Req, Db, View, Group, QueryArgs, nil) -> } = QueryArgs, CurrentEtag = view_group_etag(Group, Db), couch_httpd:etag_respond(Req, CurrentEtag, fun() -> - {ok, GroupRowsFun, RespFun} = make_reduce_fold_funs(Req, GroupLevel, QueryArgs, CurrentEtag, Group#group.current_seq, #reduce_fold_helper_funs{}), + {ok, GroupRowsFun, RespFun} = make_reduce_fold_funs(Req, GroupLevel, + QueryArgs, CurrentEtag, Group#group.current_seq, + #reduce_fold_helper_funs{}), FoldAccInit = {Limit, Skip, undefined, []}, {ok, {_, _, Resp, _}} = couch_view:fold_reduce(View, RespFun, FoldAccInit, [{key_group_fun, GroupRowsFun} | @@ -170,10 +172,13 @@ output_reduce_view(Req, Db, View, Group, QueryArgs, Keys) -> } = QueryArgs, CurrentEtag = view_group_etag(Group, Db, Keys), couch_httpd:etag_respond(Req, CurrentEtag, fun() -> - {ok, GroupRowsFun, RespFun} = make_reduce_fold_funs(Req, GroupLevel, QueryArgs, CurrentEtag, Group#group.current_seq, #reduce_fold_helper_funs{}), + {ok, GroupRowsFun, RespFun} = make_reduce_fold_funs(Req, GroupLevel, + QueryArgs, CurrentEtag, Group#group.current_seq, + #reduce_fold_helper_funs{}), {Resp, _RedAcc3} = lists:foldl( fun(Key, {Resp, RedAcc}) -> - % run the reduce once for each key in keys, with limit etc reapplied for each key + % run the reduce once for each key in keys, with limit etc + % reapplied for each key FoldAccInit = {Limit, Skip, Resp, RedAcc}, {_, {_, _, Resp2, RedAcc2}} = couch_view:fold_reduce(View, RespFun, FoldAccInit, [{key_group_fun, GroupRowsFun} | @@ -229,8 +234,8 @@ parse_view_params(Req, Keys, ViewType) -> QueryList = couch_httpd:qs(Req), QueryParams = lists:foldl(fun({K, V}, Acc) -> - parse_view_param(K, V) ++ Acc - end, [], QueryList), + parse_view_param(K, V) ++ Acc + end, [], QueryList), IsMultiGet = (Keys =/= nil), Args = #view_query_args{ view_type=ViewType, @@ -242,17 +247,17 @@ parse_view_params(Req, Keys, ViewType) -> GroupLevel = QueryArgs#view_query_args.group_level, case {ViewType, GroupLevel, IsMultiGet} of - {reduce, exact, true} -> - QueryArgs; - {reduce, _, false} -> - QueryArgs; - {reduce, _, _} -> - % we can simplify code if we just drop this error message. - Msg = <<"Multi-key fetchs for reduce " - "view must include `group=true`">>, - throw({query_parse_error, Msg}); - _ -> - QueryArgs + {reduce, exact, true} -> + QueryArgs; + {reduce, _, false} -> + QueryArgs; + {reduce, _, _} -> + % we can simplify code if we just drop this error message. + Msg = <<"Multi-key fetchs for reduce " + "view must include `group=true`">>, + throw({query_parse_error, Msg}); + _ -> + QueryArgs end, QueryArgs. @@ -305,23 +310,23 @@ parse_view_param(Key, Value) -> validate_view_query(start_key, Value, Args) -> case Args#view_query_args.multi_get of - true -> - Msg = <<"Query parameter `start_key` is " - "not compatible with multi-get">>, - throw({query_parse_error, Msg}); - _ -> - Args#view_query_args{start_key=Value} + true -> + Msg = <<"Query parameter `start_key` is " + "not compatible with multi-get">>, + throw({query_parse_error, Msg}); + _ -> + Args#view_query_args{start_key=Value} end; validate_view_query(start_docid, Value, Args) -> Args#view_query_args{start_docid=Value}; validate_view_query(end_key, Value, Args) -> case Args#view_query_args.multi_get of - true-> - Msg = <<"Query parameter `end_key` is " - "not compatible with multi-get">>, - throw({query_parse_error, Msg}); - _ -> - Args#view_query_args{end_key=Value} + true-> + Msg = <<"Query parameter `end_key` is " + "not compatible with multi-get">>, + throw({query_parse_error, Msg}); + _ -> + Args#view_query_args{end_key=Value} end; validate_view_query(end_docid, Value, Args) -> Args#view_query_args{end_docid=Value}; @@ -333,15 +338,15 @@ validate_view_query(stale, _, Args) -> Args; validate_view_query(descending, true, Args) -> case Args#view_query_args.direction of - rev -> Args; % Already reversed - fwd -> - Args#view_query_args{ - direction = rev, - start_docid = - reverse_key_default(Args#view_query_args.start_docid), - end_docid = - reverse_key_default(Args#view_query_args.end_docid) - } + rev -> Args; % Already reversed + fwd -> + Args#view_query_args{ + direction = rev, + start_docid = + reverse_key_default(Args#view_query_args.start_docid), + end_docid = + reverse_key_default(Args#view_query_args.end_docid) + } end; validate_view_query(descending, false, Args) -> Args; % Ignore default condition @@ -349,32 +354,33 @@ validate_view_query(skip, Value, Args) -> Args#view_query_args{skip=Value}; validate_view_query(group_level, Value, Args) -> case Args#view_query_args.view_type of - reduce -> - Args#view_query_args{group_level=Value}; - _ -> - Msg = <<"Invalid URL parameter 'group' or " - " 'group_level' for non-reduce view.">>, - throw({query_parse_error, Msg}) + reduce -> + Args#view_query_args{group_level=Value}; + _ -> + Msg = <<"Invalid URL parameter 'group' or " + " 'group_level' for non-reduce view.">>, + throw({query_parse_error, Msg}) end; validate_view_query(inclusive_end, Value, Args) -> Args#view_query_args{inclusive_end=Value}; validate_view_query(reduce, _, Args) -> case Args#view_query_args.view_type of - map -> - Msg = <<"Invalid URL parameter `reduce` for map view.">>, - throw({query_parse_error, Msg}); - _ -> - Args + map -> + Msg = <<"Invalid URL parameter `reduce` for map view.">>, + throw({query_parse_error, Msg}); + _ -> + Args end; validate_view_query(include_docs, true, Args) -> case Args#view_query_args.view_type of - reduce -> - Msg = <<"Query parameter `include_docs` " - "is invalid for reduce views.">>, - throw({query_parse_error, Msg}); - _ -> - Args#view_query_args{include_docs=true} + reduce -> + Msg = <<"Query parameter `include_docs` " + "is invalid for reduce views.">>, + throw({query_parse_error, Msg}); + _ -> + Args#view_query_args{include_docs=true} end; +% Use the view_query_args record's default value validate_view_query(include_docs, _Value, Args) -> Args; validate_view_query(extra, _Value, Args) -> @@ -391,7 +397,8 @@ make_view_fold_fun(Req, QueryArgs, Etag, Db, UpdateSeq, TotalViewCount, HelperFu include_docs = IncludeDocs } = QueryArgs, - fun({{Key, DocId}, Value}, OffsetReds, {AccLimit, AccSkip, Resp, RowFunAcc}) -> + fun({{Key, DocId}, Value}, OffsetReds, + {AccLimit, AccSkip, Resp, RowFunAcc}) -> case {AccLimit, AccSkip, Resp} of {0, _, _} -> % we've done "limit" rows, stop foldling @@ -441,7 +448,7 @@ make_reduce_fold_funs(Req, GroupLevel, _QueryArgs, Etag, UpdateSeq, HelperFuns) (_Key, Red, {AccLimit, 0, undefined, RowAcc0}) when GroupLevel == 0 -> % we haven't started responding yet and group=false - {ok, Resp2, RowAcc} = StartRespFun(Req, Etag, RowAcc0,UpdateSeq), + {ok, Resp2, RowAcc} = StartRespFun(Req, Etag, RowAcc0, UpdateSeq), {Go, RowAcc2} = SendRowFun(Resp2, {null, Red}, RowAcc), {Go, {AccLimit - 1, 0, Resp2, RowAcc2}}; (_Key, Red, {AccLimit, 0, Resp, RowAcc}) when GroupLevel == 0 -> @@ -452,18 +459,20 @@ make_reduce_fold_funs(Req, GroupLevel, _QueryArgs, Etag, UpdateSeq, HelperFuns) (Key, Red, {AccLimit, 0, undefined, RowAcc0}) when is_integer(GroupLevel), is_list(Key) -> % group_level and we haven't responded yet - {ok, Resp2, RowAcc} = StartRespFun(Req, Etag, RowAcc0,UpdateSeq), - {Go, RowAcc2} = SendRowFun(Resp2, {lists:sublist(Key, GroupLevel), Red}, RowAcc), + {ok, Resp2, RowAcc} = StartRespFun(Req, Etag, RowAcc0, UpdateSeq), + {Go, RowAcc2} = SendRowFun(Resp2, + {lists:sublist(Key, GroupLevel), Red}, RowAcc), {Go, {AccLimit - 1, 0, Resp2, RowAcc2}}; (Key, Red, {AccLimit, 0, Resp, RowAcc}) when is_integer(GroupLevel), is_list(Key) -> % group_level and we've already started the response - {Go, RowAcc2} = SendRowFun(Resp, {lists:sublist(Key, GroupLevel), Red}, RowAcc), + {Go, RowAcc2} = SendRowFun(Resp, + {lists:sublist(Key, GroupLevel), Red}, RowAcc), {Go, {AccLimit - 1, 0, Resp, RowAcc2}}; (Key, Red, {AccLimit, 0, undefined, RowAcc0}) -> % group=true and we haven't responded yet - {ok, Resp2, RowAcc} = StartRespFun(Req, Etag, RowAcc0,UpdateSeq), + {ok, Resp2, RowAcc} = StartRespFun(Req, Etag, RowAcc0, UpdateSeq), {Go, RowAcc2} = SendRowFun(Resp2, {Key, Red}, RowAcc), {Go, {AccLimit - 1, 0, Resp2, RowAcc2}}; (Key, Red, {AccLimit, 0, Resp, RowAcc}) -> @@ -473,11 +482,11 @@ make_reduce_fold_funs(Req, GroupLevel, _QueryArgs, Etag, UpdateSeq, HelperFuns) end, {ok, GroupRowsFun, RespFun}. -apply_default_helper_funs(#view_fold_helper_funs{ - start_response = StartResp, - send_row = SendRow -}=Helpers) -> - +apply_default_helper_funs( + #view_fold_helper_funs{ + start_response = StartResp, + send_row = SendRow + }=Helpers) -> StartResp2 = case StartResp of undefined -> fun json_view_start_resp/6; _ -> StartResp @@ -494,10 +503,11 @@ apply_default_helper_funs(#view_fold_helper_funs{ }; -apply_default_helper_funs(#reduce_fold_helper_funs{ - start_response = StartResp, - send_row = SendRow -}=Helpers) -> +apply_default_helper_funs( + #reduce_fold_helper_funs{ + start_response = StartResp, + send_row = SendRow + }=Helpers) -> StartResp2 = case StartResp of undefined -> fun json_reduce_start_resp/4; _ -> StartResp @@ -543,7 +553,9 @@ make_end_key_option( json_view_start_resp(Req, Etag, TotalViewCount, Offset, _Acc, UpdateSeq) -> {ok, Resp} = start_json_response(Req, 200, [{"Etag", Etag}]), - BeginBody = io_lib:format("{\"total_rows\":~w,\"update_seq\":~w,\"offset\":~w,\"rows\":[\r\n", + BeginBody = io_lib:format( + "{\"total_rows\":~w,\"update_seq\":~w," + "\"offset\":~w,\"rows\":[\r\n", [TotalViewCount, UpdateSeq, Offset]), {ok, Resp, BeginBody}. @@ -596,15 +608,15 @@ view_row_with_doc(Db, {{Key, DocId}, Value}, IdRev) -> doc_member(Db, {DocId, Rev}) -> ?LOG_DEBUG("Include Doc: ~p ~p", [DocId, Rev]), case (catch couch_httpd_db:couch_doc_open(Db, DocId, Rev, [])) of - #doc{} = Doc -> - JsonDoc = couch_doc:to_json_obj(Doc, []), - [{doc, JsonDoc}]; - _Else -> - [{doc, null}] + #doc{} = Doc -> + JsonDoc = couch_doc:to_json_obj(Doc, []), + [{doc, JsonDoc}]; + _Else -> + [{doc, null}] end. finish_view_fold(Req, TotalRows, Offset, FoldResult) -> - finish_view_fold(Req, TotalRows, Offset, FoldResult, []). + finish_view_fold(Req, TotalRows, Offset, FoldResult, []). finish_view_fold(Req, TotalRows, Offset, FoldResult, Fields) -> case FoldResult of @@ -623,7 +635,7 @@ finish_view_fold(Req, TotalRows, Offset, FoldResult, Fields) -> end. finish_reduce_fold(Req, Resp) -> - finish_reduce_fold(Req, Resp, []). + finish_reduce_fold(Req, Resp, []). finish_reduce_fold(Req, Resp, Fields) -> case Resp of @@ -638,11 +650,11 @@ finish_reduce_fold(Req, Resp, Fields) -> parse_bool_param(Val) -> case string:to_lower(Val) of - "true" -> true; - "false" -> false; - _ -> - Msg = io_lib:format("Invalid boolean parameter: ~p", [Val]), - throw({query_parse_error, ?l2b(Msg)}) + "true" -> true; + "false" -> false; + _ -> + Msg = io_lib:format("Invalid boolean parameter: ~p", [Val]), + throw({query_parse_error, ?l2b(Msg)}) end. parse_int_param(Val) -> |