Class Precondition (2.3.4)

Version 2.3.4

• 2.17.0 (latest)
• 2.16.1
• 2.15.0
• 2.14.0
• 2.13.1
• 2.12.0
• 2.11.1
• 2.10.1
• 2.9.1
• 2.8.0
• 2.7.3
• 2.6.1
• 2.5.3
• 2.4.0
• 2.3.4
• 2.2.0
• 2.1.3
• 2.0.2
• 1.9.2
• 1.8.1
• 1.7.0
• 1.6.2
• 1.5.0
• 1.4.0
• 1.3.0

Precondition(mapping=None, *, ignore_unknown_fields=False, **kwargs)

A precondition on a document, used for conditional operations.

Attributes
Name	Description
exists	bool When set to true, the target document must exist. When set to false, the target document must not exist.
update_time	google.protobuf.timestamp_pb2.Timestamp When set, the target document must exist and have been last updated at that time.