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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07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\u003eThis webpage details the \u003ccode\u003eReadOptions\u003c/code\u003e class within the \u003ccode\u003eGoogle.Cloud.Datastore.V1\u003c/code\u003e namespace, outlining its role in defining options for read requests in the Google Cloud Datastore.\u003c/p\u003e\n"],["\u003cp\u003eThe latest version available for \u003ccode\u003eReadOptions\u003c/code\u003e is 4.15.0, with a history of versions ranging back to 3.2.0, and this specific content focuses on version 4.0.0.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eReadOptions\u003c/code\u003e implements several interfaces including \u003ccode\u003eIMessage\u003c/code\u003e, \u003ccode\u003eIEquatable\u003c/code\u003e, \u003ccode\u003eIDeepCloneable\u003c/code\u003e, and \u003ccode\u003eIBufferMessage\u003c/code\u003e, and inherits from \u003ccode\u003eObject\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eKey properties of the \u003ccode\u003eReadOptions\u003c/code\u003e class include \u003ccode\u003eConsistencyTypeCase\u003c/code\u003e, \u003ccode\u003eReadConsistency\u003c/code\u003e, \u003ccode\u003eReadTime\u003c/code\u003e, and \u003ccode\u003eTransaction\u003c/code\u003e, each serving to specify the type and parameters of data retrieval.\u003c/p\u003e\n"],["\u003cp\u003eThe class offers two constructors: a default \u003ccode\u003eReadOptions()\u003c/code\u003e and a copy constructor, \u003ccode\u003eReadOptions(ReadOptions other)\u003c/code\u003e, to create new instances or copies.\u003c/p\u003e\n"]]],[],null,[]]
