Tidy up _simple_... methods
Erik Johnston
parent
87db64b839
commit
7e282a53a5
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@ -399,7 +399,7 @@ class SQLBaseStore(object):
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txn.execute(sql, allvalues.values())
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def _simple_select_one(self, table, keyvalues, retcols,
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allow_none=False):
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allow_none=False, desc="_simple_select_one"):
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"""Executes a SELECT query on the named table, which is expected to
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return a single row, returning a single column from it.
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@ -411,8 +411,10 @@ class SQLBaseStore(object):
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allow_none : If true, return None instead of failing if the SELECT
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statement returns no rows
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"""
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return self._simple_selectupdate_one(
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table, keyvalues, retcols=retcols, allow_none=allow_none
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return self.runInteraction(
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desc,
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self._simple_select_one_txn,
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table, keyvalues, retcols, allow_none,
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)
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def _simple_select_one_onecol(self, table, keyvalues, retcol,
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@ -523,7 +525,7 @@ class SQLBaseStore(object):
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return self.cursor_to_dict(txn)
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def _simple_update_one(self, table, keyvalues, updatevalues,
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retcols=None):
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desc="_simple_update_one"):
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"""Executes an UPDATE query on the named table, setting new values for
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columns in a row matching the key values.
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@ -541,51 +543,70 @@ class SQLBaseStore(object):
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get-and-set. This can be used to implement compare-and-set by putting
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the update column in the 'keyvalues' dict as well.
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"""
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return self._simple_selectupdate_one(table, keyvalues, updatevalues,
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retcols=retcols)
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return self.runInteraction(
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desc,
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self._simple_update_one_txn,
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table, keyvalues, updatevalues,
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)
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def _simple_update_one_txn(self, txn, table, keyvalues, updatevalues):
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update_sql = "UPDATE %s SET %s WHERE %s" % (
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table,
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", ".join("%s = ?" % (k,) for k in updatevalues),
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" AND ".join("%s = ?" % (k,) for k in keyvalues)
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)
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txn.execute(
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update_sql,
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updatevalues.values() + keyvalues.values()
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)
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if txn.rowcount == 0:
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raise StoreError(404, "No row found")
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if txn.rowcount > 1:
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raise StoreError(500, "More than one row matched")
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def _simple_select_one_txn(self, txn, table, keyvalues, retcols,
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allow_none=False):
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select_sql = "SELECT %s FROM %s WHERE %s ORDER BY rowid asc" % (
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", ".join(retcols),
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table,
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" AND ".join("%s = ?" % (k) for k in keyvalues)
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)
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txn.execute(select_sql, keyvalues.values())
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row = txn.fetchone()
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if not row:
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if allow_none:
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return None
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raise StoreError(404, "No row found")
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if txn.rowcount > 1:
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raise StoreError(500, "More than one row matched")
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return dict(zip(retcols, row))
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def _simple_selectupdate_one(self, table, keyvalues, updatevalues=None,
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retcols=None, allow_none=False):
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""" Combined SELECT then UPDATE."""
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if retcols:
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select_sql = "SELECT %s FROM %s WHERE %s ORDER BY rowid asc" % (
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", ".join(retcols),
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table,
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" AND ".join("%s = ?" % (k) for k in keyvalues)
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)
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if updatevalues:
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update_sql = "UPDATE %s SET %s WHERE %s" % (
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table,
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", ".join("%s = ?" % (k,) for k in updatevalues),
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" AND ".join("%s = ?" % (k,) for k in keyvalues)
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)
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def func(txn):
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ret = None
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if retcols:
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txn.execute(select_sql, keyvalues.values())
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row = txn.fetchone()
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if not row:
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if allow_none:
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return None
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raise StoreError(404, "No row found")
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if txn.rowcount > 1:
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raise StoreError(500, "More than one row matched")
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ret = dict(zip(retcols, row))
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if updatevalues:
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txn.execute(
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update_sql,
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updatevalues.values() + keyvalues.values()
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ret = self._simple_select_one_txn(
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txn,
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table=table,
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keyvalues=keyvalues,
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retcols=retcols,
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allow_none=allow_none,
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)
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if txn.rowcount == 0:
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raise StoreError(404, "No row found")
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if txn.rowcount > 1:
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raise StoreError(500, "More than one row matched")
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if updatevalues:
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self._simple_update_one_txn(
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txn,
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table=table,
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keyvalues=keyvalues,
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updatevalues=updatevalues,
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)
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return ret
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return self.runInteraction("_simple_selectupdate_one", func)
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@ -45,7 +45,6 @@ class PresenceStore(SQLBaseStore):
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updatevalues={"state": new_state["state"],
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"status_msg": new_state["status_msg"],
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"mtime": self._clock.time_msec()},
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retcols=["state"],
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)
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def allow_presence_visible(self, observed_localpart, observer_userid):
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@ -180,7 +180,7 @@ class SQLBaseStoreTestCase(unittest.TestCase):
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self.mock_txn.rowcount = 1
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self.mock_txn.fetchone.return_value = ("Old Value",)
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ret = yield self.datastore._simple_update_one(
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ret = yield self.datastore._simple_selectupdate_one(
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table="tablename",
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keyvalues={"keycol": "TheKey"},
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updatevalues={"columname": "New Value"},
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@ -44,7 +44,7 @@ class RoomStoreTestCase(unittest.TestCase):
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@defer.inlineCallbacks
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def test_get_room(self):
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self.assertObjectHasAttributes(
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self.assertDictContainsSubset(
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{"room_id": self.room.to_string(),
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"creator": self.u_creator.to_string(),
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"is_public": True},
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