On Tue, Feb 6, 2018 at 5:09 PM, Антонио Антуан <a.ch....@gmail.com> wrote:
> Hello Mike!
> First of all, thank you for your help with this problem. Me and my crew
> appreciate it.
>
>
> I have a question in case of `identity_token` for `update` and `delete`
> methods of `Query` instances.
>
> If we take a look on sqlalchemy.orm.persistence.BulkDelete._do_exec, we see,
> that there is no additonal kwargs passed to `execute` method. So I don't see
> any way to pass additional kwargs to Session.get_bind. Here is code of 1.0
> version:
>
> def _do_exec(self):
> delete_stmt = sql.delete(self.primary_table,
> self.context.whereclause)
>
> self.result = self.query.session.execute(
> delete_stmt,
> params=self.query._params,
> mapper=self.mapper,
> # need to pass here additional kwargs
> )
> self.rowcount = self.result.rowcount
>
> Code from master branch (almost the same):
>
> def _execute_stmt(self, stmt):
> self.result = self.query.session.execute(
> stmt, params=self.query._params,
> mapper=self.mapper)
> self.rowcount = self.result.rowcount
>
>
>
>
> As you may remember, I have some kind of `CustomQuery` with `set_bind`
> method (like the same into sqlalchemy.ext.horizontal_shard.ShardedQuery). So
> I have `_bind_id` attribute within instances of that class.
> My question is: Is there any way to pass `self.query._bind_id` to
> `self.query.session.execute` (see above)?
for bulk operations to work with sharding it would need to be able to
emit the UPDATE or DELETE statement across multiple shards and work in
a similar way to ShardedQuery._execute_and_instances, giving it the
chance to consult with query_chooser.
can you please see if you can work with this? thanks
diff --git a/lib/sqlalchemy/orm/persistence.py
b/lib/sqlalchemy/orm/persistence.py
index dc0ae1c38..6c55dee92 100644
--- a/lib/sqlalchemy/orm/persistence.py
+++ b/lib/sqlalchemy/orm/persistence.py
@@ -1327,9 +1327,8 @@ class BulkUD(object):
self._do_post()
def _execute_stmt(self, stmt):
- self.result = self.query.session.execute(
- stmt, params=self.query._params,
- mapper=self.mapper)
+ self.result = self.query._execute_crud(stmt, self.mapper)
+
self.rowcount = self.result.rowcount
@util.dependencies("sqlalchemy.orm.query")
diff --git a/lib/sqlalchemy/orm/query.py b/lib/sqlalchemy/orm/query.py
index 4f7b22cc9..91adfb79d 100644
--- a/lib/sqlalchemy/orm/query.py
+++ b/lib/sqlalchemy/orm/query.py
@@ -2901,6 +2901,12 @@ class Query(object):
result = conn.execute(querycontext.statement, self._params)
return loading.instances(querycontext.query, result, querycontext)
+ def _execute_crud(self, stmt, mapper):
+ conn = self._connection_from_session(
+ mapper=mapper, clause=stmt, close_with_result=True)
+
+ return conn.execute(stmt, self._params)
+
def _get_bind_args(self, querycontext, fn, **kw):
return fn(
mapper=self._bind_mapper(),
>
> --
> SQLAlchemy -
> The Python SQL Toolkit and Object Relational Mapper
>
> http://www.sqlalchemy.org/
>
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--
SQLAlchemy -
The Python SQL Toolkit and Object Relational Mapper
http://www.sqlalchemy.org/
To post example code, please provide an MCVE: Minimal, Complete, and Verifiable
Example. See http://stackoverflow.com/help/mcve for a full description.
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