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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-22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 interacting with a Spanner database, providing access to multiple functions for database operations.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eConnection\u003c/code\u003e interface defines pure-virtual methods that correspond to each user-facing overload set in the \u003ccode\u003eClient\u003c/code\u003e class, such as \u003ccode\u003eRead()\u003c/code\u003e, \u003ccode\u003eExecuteQuery()\u003c/code\u003e, and \u003ccode\u003eCommit()\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eUsers can inject custom behavior into a \u003ccode\u003eClient\u003c/code\u003e object through this interface, which is especially useful for testing, and a concrete instance for real database interactions can be created via \u003ccode\u003eMakeConnection()\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe document lists the definitions for virtual functions of the \u003ccode\u003eConnection\u003c/code\u003e class, such as \u003ccode\u003eoptions()\u003c/code\u003e, \u003ccode\u003eRead()\u003c/code\u003e, \u003ccode\u003ePartitionRead()\u003c/code\u003e, \u003ccode\u003eExecuteQuery()\u003c/code\u003e, and \u003ccode\u003eExecuteDml()\u003c/code\u003e among many others, giving details on parameters and return values.\u003c/p\u003e\n"],["\u003cp\u003eThe page also provides a list of different versions, with version \u003ccode\u003e2.37.0-rc\u003c/code\u003e being the latest one.\u003c/p\u003e\n"]]],[],null,[]]
