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Helper functions for dealing with Cloud Datastore’s Protobuf API.

The non-private functions are part of the API.

Bases: object

Simple container for a geo point value.

• Parameters

  • latitude (float) – Latitude of a point.

  • longitude (float) – Longitude of a point.

Compare two geo points for equality.

• Return type

  bool

• Returns

  True if the points compare equal, else False.

Compare two geo points for inequality.

• Return type

  bool

• Returns

  False if the points compare equal, else True.

Convert the current object to protobuf.

• Return type

  google.type.latlng_pb2.LatLng.

• Returns

  The current point as a protobuf.

Factory method for creating an entity based on a protobuf.

The protobuf should be one returned from the Cloud Datastore Protobuf API.

• Parameters

  pb (entity_pb2.Entity) – The Protobuf representing the entity.

• Return type

  google.cloud.datastore.entity.Entity

• Returns

  The entity derived from the protobuf.

Converts an entity into a protobuf.

• Parameters

  entity (google.cloud.datastore.entity.Entity) – The entity to be turned into a protobuf.

• Return type

  entity_pb2.Entity

• Returns

  The protobuf representing the entity.

Validate rules for read options, and assign to the request.

Helper method for lookup() and run_query.

• Parameters

  • eventual (bool) – Flag indicating if EVENTUAL or STRONG consistency should be used.

  • transaction_id (bytes) – A transaction identifier (may be null).

  • read_time (datetime) – Read data from the specified time (may be null). This feature is in private preview.

• Return type

  datastore_pb2.ReadOptions

• Returns

  The read options corresponding to the inputs.

• Raises

  ValueError if more than one of eventual==True, transaction, and read_time is specified.

Factory method for creating a key based on a protobuf.

The protobuf should be one returned from the Cloud Datastore Protobuf API.

• Parameters

  pb (entity_pb2.Key) – The Protobuf representing the key.

• Return type

  google.cloud.datastore.key.Key

• Returns

  a new Key instance

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

Last updated 2025-08-07 UTC.

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