This interface defines pure-virtual methods for each of the user-facing overload sets in Client. That is, all of Client's Read() overloads will forward to the one pure-virtual Read() method declared in this interface, and similar for Client's other methods. This allows users to inject custom behavior (e.g., with a Google Mock object) in a Client object for use in their own tests.
To create a concrete instance that connects you to a real Spanner database, see MakeConnection().
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-22 UTC."],[[["\u003cp\u003eThis document provides an overview of the \u003ccode\u003eConnection\u003c/code\u003e interface for the Spanner database, specifically within the context of C++ development, with version \u003ccode\u003e2.19.0\u003c/code\u003e being the selected version, while offering links to versions ranging from \u003ccode\u003e2.11.0\u003c/code\u003e up to \u003ccode\u003e2.37.0-rc\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eConnection\u003c/code\u003e interface defines pure-virtual methods that correspond to the user-facing overload sets in the \u003ccode\u003eClient\u003c/code\u003e class, enabling the injection of custom behavior for testing purposes, such as using a Google Mock object.\u003c/p\u003e\n"],["\u003cp\u003eThe document provides methods of the \u003ccode\u003eClient\u003c/code\u003e interface, such as \u003ccode\u003eRead\u003c/code\u003e, \u003ccode\u003ePartitionRead\u003c/code\u003e, \u003ccode\u003eExecuteQuery\u003c/code\u003e, \u003ccode\u003eExecuteDml\u003c/code\u003e, and \u003ccode\u003eCommit\u003c/code\u003e, among others, and their functions when it comes to interacting with a Spanner database.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eConnection\u003c/code\u003e interface outlines the interface to connect to a real Spanner database using \u003ccode\u003eMakeConnection()\u003c/code\u003e to create a concrete instance.\u003c/p\u003e\n"]]],[],null,[]]
