dj22: do not backport jsonb key transforms (#51516)
This commit is contained in:
parent
3f56b2ad0b
commit
7df6f0ae0c
|
@ -14,59 +14,59 @@
|
|||
# You should have received a copy of the GNU Affero General Public License
|
||||
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
from django.contrib.postgres.fields import jsonb
|
||||
import django
|
||||
|
||||
from django.db.models import Transform, TextField, DateField
|
||||
|
||||
from django.conf import settings
|
||||
from django.contrib.postgres.fields import jsonb
|
||||
try:
|
||||
from django.contrib.postgres.fields.jsonb import KeyTransform, KeyTransformTextLookupMixin
|
||||
except ImportError:
|
||||
# backport from Django 2.x
|
||||
class KeyTransform(Transform):
|
||||
operator = '->'
|
||||
nested_operator = '#>'
|
||||
|
||||
def __init__(self, key_name, *args, **kwargs):
|
||||
super(KeyTransform, self).__init__(*args, **kwargs)
|
||||
self.key_name = key_name
|
||||
|
||||
class KeyTransform(Transform):
|
||||
operator = '->'
|
||||
nested_operator = '#>'
|
||||
def as_sql(self, compiler, connection):
|
||||
key_transforms = [self.key_name]
|
||||
previous = self.lhs
|
||||
while isinstance(previous, KeyTransform):
|
||||
key_transforms.insert(0, previous.key_name)
|
||||
previous = previous.lhs
|
||||
lhs, params = compiler.compile(previous)
|
||||
if len(key_transforms) > 1:
|
||||
return "(%s %s %%s)" % (lhs, self.nested_operator), [key_transforms] + params
|
||||
try:
|
||||
int(self.key_name)
|
||||
except ValueError:
|
||||
lookup = "'%s'" % self.key_name
|
||||
else:
|
||||
lookup = "%s" % self.key_name
|
||||
return "(%s %s %s)" % (lhs, self.operator, lookup), params
|
||||
|
||||
def __init__(self, key_name, *args, **kwargs):
|
||||
super(KeyTransform, self).__init__(*args, **kwargs)
|
||||
self.key_name = key_name
|
||||
jsonb.KeyTransform = KeyTransform
|
||||
|
||||
def as_sql(self, compiler, connection):
|
||||
key_transforms = [self.key_name]
|
||||
previous = self.lhs
|
||||
while isinstance(previous, KeyTransform):
|
||||
key_transforms.insert(0, previous.key_name)
|
||||
previous = previous.lhs
|
||||
lhs, params = compiler.compile(previous)
|
||||
if len(key_transforms) > 1:
|
||||
return "(%s %s %%s)" % (lhs, self.nested_operator), [key_transforms] + params
|
||||
try:
|
||||
int(self.key_name)
|
||||
except ValueError:
|
||||
lookup = "'%s'" % self.key_name
|
||||
else:
|
||||
lookup = "%s" % self.key_name
|
||||
return "(%s %s %s)" % (lhs, self.operator, lookup), params
|
||||
class KeyTextTransform(KeyTransform):
|
||||
operator = '->>'
|
||||
nested_operator = '#>>'
|
||||
_output_field = TextField()
|
||||
|
||||
|
||||
jsonb.KeyTransform = KeyTransform
|
||||
|
||||
|
||||
class KeyTextTransform(KeyTransform):
|
||||
operator = '->>'
|
||||
nested_operator = '#>>'
|
||||
_output_field = TextField()
|
||||
|
||||
|
||||
class KeyTransformTextLookupMixin(object):
|
||||
"""
|
||||
Mixin for combining with a lookup expecting a text lhs from a JSONField
|
||||
key lookup. Make use of the ->> operator instead of casting key values to
|
||||
text and performing the lookup on the resulting representation.
|
||||
"""
|
||||
def __init__(self, key_transform, *args, **kwargs):
|
||||
assert isinstance(key_transform, KeyTransform)
|
||||
key_text_transform = KeyTextTransform(
|
||||
key_transform.key_name, *key_transform.source_expressions, **key_transform.extra
|
||||
)
|
||||
super(KeyTransformTextLookupMixin, self).__init__(key_text_transform, *args, **kwargs)
|
||||
class KeyTransformTextLookupMixin(object):
|
||||
"""
|
||||
Mixin for combining with a lookup expecting a text lhs from a JSONField
|
||||
key lookup. Make use of the ->> operator instead of casting key values to
|
||||
text and performing the lookup on the resulting representation.
|
||||
"""
|
||||
def __init__(self, key_transform, *args, **kwargs):
|
||||
assert isinstance(key_transform, KeyTransform)
|
||||
key_text_transform = KeyTextTransform(
|
||||
key_transform.key_name, *key_transform.source_expressions, **key_transform.extra
|
||||
)
|
||||
super(KeyTransformTextLookupMixin, self).__init__(key_text_transform, *args, **kwargs)
|
||||
|
||||
|
||||
class Lower(Transform):
|
||||
|
|
Loading…
Reference in New Issue