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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-22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 Google Cloud Spanner, which provides a means to interact with Spanner databases.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eConnection\u003c/code\u003e interface defines pure-virtual methods that correspond to the user-facing overloads in the \u003ccode\u003eClient\u003c/code\u003e class, enabling users to inject custom behaviors for testing.\u003c/p\u003e\n"],["\u003cp\u003eIt includes methods for various Spanner operations, such as \u003ccode\u003eRead\u003c/code\u003e, \u003ccode\u003ePartitionRead\u003c/code\u003e, \u003ccode\u003eExecuteQuery\u003c/code\u003e, \u003ccode\u003eExecuteDml\u003c/code\u003e, \u003ccode\u003eCommit\u003c/code\u003e, \u003ccode\u003eRollback\u003c/code\u003e, and more.\u003c/p\u003e\n"],["\u003cp\u003eThe latest release candidate is version \u003ccode\u003e2.37.0-rc\u003c/code\u003e, and many prior versions are also documented, going back to version \u003ccode\u003e2.11.0\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eMakeConnection()\u003c/code\u003e function can be used to create a concrete instance of a connection, for connecting to a live Spanner database.\u003c/p\u003e\n"]]],[],null,[]]
