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# -*- coding: utf-8 -*-
# Copyright 2015 OpenMarket Ltd
#
# 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.
from twisted.internet import defer
from _base import SQLBaseStore
from synapse.api.constants import KnownRoomEventKeys, SearchConstraintTypes
class SearchStore(SQLBaseStore):
@defer.inlineCallbacks
def search_msgs(self, constraints):
clauses = []
args = []
fts = None
for c in constraints:
local_clauses = []
if c.search_type == SearchConstraintTypes.FTS:
fts = c.value
for key in c.keys:
local_clauses.append("key = ?")
args.append(key)
elif c.search_type == SearchConstraintTypes.EXACT:
for key in c.keys:
if key == KnownRoomEventKeys.ROOM_ID:
for value in c.value:
local_clauses.append("room_id = ?")
args.append(value)
clauses.append(
"(%s)" % (" OR ".join(local_clauses),)
)
sql = (
"SELECT ts_rank_cd(vector, query) AS rank, event_id"
" FROM plainto_tsquery('english', ?) as query, event_search"
" WHERE vector @@ query"
)
for clause in clauses:
sql += " AND " + clause
sql += " ORDER BY rank DESC"
results = yield self._execute(
"search_msgs", self.cursor_to_dict, sql, *([fts] + args)
)
events = yield self._get_events([r["event_id"] for r in results])
event_map = {
ev.event_id: ev
for ev in events
}
defer.returnValue([
{
"rank": r["rank"],
"result": event_map[r["event_id"]]
}
for r in results
if r["event_id"] in event_map
])
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