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Remove deuplication. Add comment about regex.

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This commit is contained in:
Erik Johnston 2015-12-02 13:09:37 +00:00
parent 477da77b46
commit 7dd6e5efca
1 changed files with 12 additions and 22 deletions
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34
synapse/storage/search.py
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@ -140,10 +140,7 @@ class SearchStore(BackgroundUpdateStore):
list of dicts
"""
clauses = []
if isinstance(self.database_engine, PostgresEngine):
args = [_postgres_parse_query(search_term)]
else:
args = [_sqlite_parse_query(search_term)]
args = [_parse_query(self.database_engine, search_term)]
# Make sure we don't explode because the person is in too many rooms.
# We filter the results below regardless.
@ -230,10 +227,7 @@ class SearchStore(BackgroundUpdateStore):
"""
clauses = []
if isinstance(self.database_engine, PostgresEngine):
args = [_postgres_parse_query(search_term)]
else:
args = [_sqlite_parse_query(search_term)]
args = [_parse_query(self.database_engine, search_term)]
# Make sure we don't explode because the person is in too many rooms.
# We filter the results below regardless.
@ -408,21 +402,17 @@ def _to_postgres_options(options_dict):
)
def _postgres_parse_query(search_term):
def _parse_query(database_engine, search_term):
"""Takes a plain unicode string from the user and converts it into a form
that can be passed to `to_tsquery(..)` postgres func. We use this so that
we can add prefix matching, which isn't something `plainto_tsquery` supports.
that can be passed to database.
We use this so that we can add prefix matching, which isn't something
that is supported by default.
"""
# Pull out the individual words, discarding any non-word characters.
results = re.findall(r"([\w\-]+)", search_term, re.UNICODE)
return " & ".join(result + ":*" for result in results)
def _sqlite_parse_query(search_term):
"""Takes a plain unicode string from the user and converts it into a form
that can be passed to sqlite `MATCH`. We use this so that we can do prefix
matching.
"""
results = re.findall(r"([\w\-]+)", search_term, re.UNICODE)
return " & ".join(result + "*" for result in results)
if isinstance(database_engine, PostgresEngine):
return " & ".join(result + ":*" for result in results)
else:
return " & ".join(result + "*" for result in results)