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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-22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 page details the \u003ccode\u003eConnection\u003c/code\u003e interface for Spanner database interactions, as part of the C++ client library, with the latest version being 2.37.0-rc and the current version represented in this content is 2.34.0.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eConnection\u003c/code\u003e interface defines pure-virtual methods corresponding to each user-facing method in the \u003ccode\u003eClient\u003c/code\u003e class, enabling custom behavior injection for testing purposes.\u003c/p\u003e\n"],["\u003cp\u003eThis interface serves as an abstraction layer for actions such as \u003ccode\u003eRead\u003c/code\u003e, \u003ccode\u003eExecuteQuery\u003c/code\u003e, \u003ccode\u003eCommit\u003c/code\u003e, and other spanner operations.\u003c/p\u003e\n"],["\u003cp\u003eThe functions in this interface return the options, or handle Spanner operations like \u003ccode\u003eRead\u003c/code\u003e, \u003ccode\u003ePartitionRead\u003c/code\u003e, \u003ccode\u003eExecuteQuery\u003c/code\u003e, and more.\u003c/p\u003e\n"],["\u003cp\u003eTo make a real connection to a database, the \u003ccode\u003eMakeConnection()\u003c/code\u003e function can be used.\u003c/p\u003e\n"]]],[],null,[]]
