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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-22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\u003eThe page provides documentation for various versions of the Google Cloud Spanner C++ client \u003ccode\u003eConnection\u003c/code\u003e class, with version 2.37.0-rc being the latest release candidate and 2.11.0 the current version displayed.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eConnection\u003c/code\u003e class offers pure-virtual methods that correspond to user-facing overload sets within the \u003ccode\u003eClient\u003c/code\u003e class, allowing for the injection of custom behaviors, such as with Google Mock objects, for testing.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eConnection\u003c/code\u003e acts as an interface for interacting with a Spanner database, including functions for reading data, executing queries and DML statements, partitioning operations, committing transactions, and rolling back transactions.\u003c/p\u003e\n"],["\u003cp\u003eThe documentation details various virtual functions available within the \u003ccode\u003eConnection\u003c/code\u003e class, which include methods such as \u003ccode\u003eRead\u003c/code\u003e, \u003ccode\u003eExecuteQuery\u003c/code\u003e, \u003ccode\u003eCommit\u003c/code\u003e, and \u003ccode\u003eRollback\u003c/code\u003e, each outlining parameters and return types.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eMakeConnection()\u003c/code\u003e method, mentioned in the context, allows for the creation of a real connection to a Spanner database.\u003c/p\u003e\n"]]],[],null,[]]
