Reads entities as they were at the given time. This may not be older
than 270 seconds. This value is only supported for Cloud Firestore in
Datastore mode.
The identifier of the transaction in which to read. A
transaction identifier is returned by a call to
[Datastore.BeginTransaction][google.datastore.v1.Datastore.BeginTransaction].
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07 UTC."],[[["\u003cp\u003eThe \u003ccode\u003eReadOptions\u003c/code\u003e class defines the options for read requests in the Google Cloud Datastore V1.\u003c/p\u003e\n"],["\u003cp\u003eThis class implements multiple interfaces, including \u003ccode\u003eIMessage\u003c/code\u003e, \u003ccode\u003eIEquatable\u003c/code\u003e, \u003ccode\u003eIDeepCloneable\u003c/code\u003e, and \u003ccode\u003eIBufferMessage\u003c/code\u003e, providing functionalities for message handling, equality checks, deep cloning, and buffer message support.\u003c/p\u003e\n"],["\u003cp\u003eIt offers constructors for creating \u003ccode\u003eReadOptions\u003c/code\u003e objects, either empty or by copying from another \u003ccode\u003eReadOptions\u003c/code\u003e instance.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eReadOptions\u003c/code\u003e class includes properties to specify read consistency (\u003ccode\u003eReadConsistency\u003c/code\u003e), the time at which entities should be read (\u003ccode\u003eReadTime\u003c/code\u003e), and the transaction identifier for transactional reads (\u003ccode\u003eTransaction\u003c/code\u003e).\u003c/p\u003e\n"],["\u003cp\u003eThe webpage includes a version history for the ReadOptions class going from versions 3.2.0 up to 4.15.0, with 4.15.0 being the latest version.\u003c/p\u003e\n"]]],[],null,[]]
