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Support for Commit timestamps by maroux · Pull Request #80 · google/python-spanner-orm · GitHub

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Support for Commit timestamps #80

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Support for Commit timestamps #80

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17 changes: 14 additions & 3 deletions spanner_orm/field.py
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Original file line number Diff line number Diff line change
Expand Up @@ -48,16 +48,27 @@ class Field(object):
def __init__(self,
field_type: Type[FieldType],
nullable: bool = False,
primary_key: bool = False):
primary_key: bool = False,
allow_commit_timestamp: bool = False):
self.name = None
self._type = field_type
self._nullable = nullable
self._primary_key = primary_key
self._allow_commit_timestamp = allow_commit_timestamp

if self._type.ddl() != "TIMESTAMP" and self._allow_commit_timestamp:
raise error.ValidationError('allow_commit_timestamp can not be set on field {}'.format(self._type))

def ddl(self) -> str:
if self._nullable:
return self._type.ddl()
return '{field_type} NOT NULL'.format(field_type=self._type.ddl())
nullable = ''
else:
nullable = ' NOT NULL'
if self._allow_commit_timestamp:
options = ' OPTIONS (allow_commit_timestamp=true)'
else:
options = ''
return '{field_type}{nullable}{options}'.format(field_type=self._type.ddl(), nullable=nullable, options=options)

def field_type(self) -> Type[FieldType]:
return self._type
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1 change: 1 addition & 0 deletions spanner_orm/tests/models.py
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Original file line number Diff line number Diff line change
Expand Up @@ -76,6 +76,7 @@ class UnittestModel(model.Model):
string = field.Field(field.String, primary_key=True)
string_2 = field.Field(field.String, nullable=True)
timestamp = field.Field(field.Timestamp)
timestamp_2 = field.Field(field.Timestamp, nullable=True, allow_commit_timestamp=True)
string_array = field.Field(field.StringArray, nullable=True)

test_index = index.Index(['string_2'])
5 changes: 3 additions & 2 deletions spanner_orm/tests/update_test.py
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Expand Up @@ -67,8 +67,9 @@ def test_create_table(self, get_model):

test_model_ddl = ('CREATE TABLE table (int_ INT64 NOT NULL, int_2 INT64,'
' string STRING(MAX) NOT NULL, string_2 STRING(MAX),'
' timestamp TIMESTAMP NOT NULL, string_array'
' ARRAY<STRING(MAX)>) PRIMARY KEY (int_, string)')
' timestamp TIMESTAMP NOT NULL,'
' timestamp_2 TIMESTAMP OPTIONS (allow_commit_timestamp=true),'
' string_array ARRAY<STRING(MAX)>) PRIMARY KEY (int_, string)')
self.assertEqual(test_update.ddl(), test_model_ddl)

@mock.patch('spanner_orm.admin.metadata.SpannerMetadata.model')
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