A simple representation for the Spanner JSON type: a lightweight, text-based, language-independent data interchange format.
JSON (the JavaScript Object Notation) defines a small set of formatting rules for the portable representation of structured data. See RFC 7159.
A Json value can be constructed from, and converted to a std::string. Json values can be compared (by string) for equality, and streamed.
There is no syntax checking of JSON strings in this interface. The user is expected to only construct Json values from well-formatted strings.
Constructors
Json(Json const &)
Regular value type, supporting copy, assign, move.
Parameter
Name
Description
Json const &
Json(Json &&)
Regular value type, supporting copy, assign, move.
Parameter
Name
Description
Json &&
Json()
A null value.
Json(std::string)
Construction from a JSON-formatted string.
Note that there is no check here that the argument string is indeed well-formatted. Error detection will be delayed until the value is passed to Spanner.
Parameter
Name
Description
s
std::string
Operators
operator=(Json const &)
Regular value type, supporting copy, assign, move.
Parameter
Name
Description
Json const &
Returns
Type
Description
Json &
operator=(Json &&)
Regular value type, supporting copy, assign, move.
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-22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 content provides documentation for the \u003ccode\u003eJson\u003c/code\u003e class in the Google Cloud Spanner C++ library, showcasing version history and specific details for version 2.34.0.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eJson\u003c/code\u003e class represents the Spanner JSON type, which is a lightweight, text-based format for data interchange, based on a set of formatting rules defined in RFC 7159.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eJson\u003c/code\u003e values can be created from and converted to \u003ccode\u003estd::string\u003c/code\u003e objects, and compared for equality, with the expectation that users provide well-formatted strings.\u003c/p\u003e\n"],["\u003cp\u003eThe documentation details the constructors for the \u003ccode\u003eJson\u003c/code\u003e class, including creating null values, constructing from JSON-formatted strings, and copy/move operations.\u003c/p\u003e\n"],["\u003cp\u003eThe documentation provides details on operators available for use with \u003ccode\u003eJson\u003c/code\u003e values, such as assignment and conversion to a JSON formatted string.\u003c/p\u003e\n"]]],[],null,[]]
