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| author | Mike Bayer <mike_mp@zzzcomputing.com> | 2016-09-30 10:09:56 -0400 |
|---|---|---|
| committer | Mike Bayer <mike_mp@zzzcomputing.com> | 2016-10-01 09:46:11 -0400 |
| commit | 333414fe94941a6a58e7d8e45042548eb2d58119 (patch) | |
| tree | d4e82336605dbfbeda0afb5735b3c56449db9b56 /lib/sqlalchemy/sql/operators.py | |
| parent | 9bfd0289383bfcaf650fe516862df545dcf95c2e (diff) | |
| download | sqlalchemy-333414fe94941a6a58e7d8e45042548eb2d58119.tar.gz | |
Add "eager_parenthesis" late-compilation rule, use w/ PG JSON/HSTORE
Added compiler-level flags used by Postgresql to place additional
parenthesis than would normally be generated by precedence rules
around operations involving JSON, HSTORE indexing operators as well as
within their operands since it has been observed that Postgresql's
precedence rules for at least the HSTORE indexing operator is not
consistent between 9.4 and 9.5.
Fixes: #3806
Change-Id: I5899677b330595264543b055abd54f3c76bfabf2
Diffstat (limited to 'lib/sqlalchemy/sql/operators.py')
| -rw-r--r-- | lib/sqlalchemy/sql/operators.py | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/lib/sqlalchemy/sql/operators.py b/lib/sqlalchemy/sql/operators.py index 142606680..69eee28ab 100644 --- a/lib/sqlalchemy/sql/operators.py +++ b/lib/sqlalchemy/sql/operators.py @@ -215,11 +215,12 @@ class custom_op(object): def __init__( self, opstring, precedence=0, is_comparison=False, - natural_self_precedent=False): + natural_self_precedent=False, eager_grouping=False): self.opstring = opstring self.precedence = precedence self.is_comparison = is_comparison self.natural_self_precedent = natural_self_precedent + self.eager_grouping = eager_grouping def __eq__(self, other): return isinstance(other, custom_op) and \ @@ -935,9 +936,10 @@ _PRECEDENCE = { from_: 15, any_op: 15, all_op: 15, + getitem: 15, json_getitem_op: 15, json_path_getitem_op: 15, - getitem: 15, + mul: 8, truediv: 8, div: 8, @@ -985,6 +987,7 @@ _PRECEDENCE = { as_: -1, exists: 0, + _asbool: -10, _smallest: _smallest, _largest: _largest |