| % Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| % use this file except in compliance with the License. You may obtain a copy of |
| % the License at |
| % |
| % http://www.apache.org/licenses/LICENSE-2.0 |
| % |
| % Unless required by applicable law or agreed to in writing, software |
| % distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| % WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| % License for the specific language governing permissions and limitations under |
| % the License. |
| |
| -module(mango_cursor_special). |
| |
| -export([ |
| create/4, |
| explain/1, |
| execute/3 |
| ]). |
| |
| -export([ |
| handle_message/2 |
| ]). |
| |
| |
| -include_lib("couch/include/couch_db.hrl"). |
| -include_lib("couch_mrview/include/couch_mrview.hrl"). |
| -include("mango_cursor.hrl"). |
| |
| |
| create(Db, Indexes, Selector, Opts) -> |
| InitialRange = mango_idx_view:field_ranges(Selector), |
| CatchAll = [{<<"_id">>, {'$gt', null, '$lt', mango_json_max}}], |
| FieldRanges = lists:append(CatchAll, InitialRange), |
| Composited = mango_cursor_view:composite_indexes(Indexes, FieldRanges), |
| {Index, IndexRanges} = mango_cursor_view:choose_best_index(Db, Composited), |
| |
| Limit = couch_util:get_value(limit, Opts, mango_opts:default_limit()), |
| Skip = couch_util:get_value(skip, Opts, 0), |
| Fields = couch_util:get_value(fields, Opts, all_fields), |
| |
| {ok, #cursor{ |
| db = Db, |
| index = Index, |
| ranges = IndexRanges, |
| selector = Selector, |
| opts = Opts, |
| limit = Limit, |
| skip = Skip, |
| fields = Fields |
| }}. |
| |
| |
| explain(Cursor) -> |
| mango_cursor_view:explain(Cursor). |
| |
| execute(Cursor0, UserFun, UserAcc) -> |
| mango_cursor_view:execute(Cursor0, UserFun, UserAcc). |
| |
| handle_message(Msg, Cursor) -> |
| mango_cursor_view:handle_message(Msg, Cursor). |