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Showing content from https://cloud.google.com/cpp/docs/reference/datacatalog/2.21.0 below:

C++ Client Libraries | Google Cloud

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An idiomatic C++ client library for the Google Cloud Data Catalog API, a fully managed and highly scalable data discovery and metadata management service.

While this library is GA, please note Google Cloud C++ client libraries do not follow Semantic Versioning.

The following shows the code that you'll run in the google/cloud/datacatalog/quickstart/ directory, which should give you a taste of the Google Cloud Data Catalog API C++ client library API.

#include "google/cloud/datacatalog/v1/data_catalog_client.h"
#include "google/cloud/location.h"
#include <iostream>

int main(int argc, char* argv[]) try {
  if (argc != 3) {
    std::cerr << "Usage: " << argv[0] << " project-id location-id\n";
    return 1;
  }

  auto const location = google::cloud::Location(argv[1], argv[2]);

  namespace datacatalog = ::google::cloud::datacatalog_v1;
  auto client =
      datacatalog::DataCatalogClient(datacatalog::MakeDataCatalogConnection());

  for (auto eg : client.ListEntryGroups(location.FullName())) {
    if (!eg) throw std::move(eg).status();
    std::cout << eg->DebugString() << "\n";
  }

  return 0;
} catch (google::cloud::Status const& status) {
  std::cerr << "google::cloud::Status thrown: " << status << "\n";
  return 1;
}

This library offers multiple *Client classes, which are listed below. Each one of these classes exposes all the RPCs for a service as member functions of the class. This library groups multiple services because they are part of the same product or are often used together. A typical example may be the administrative and data plane operations for a single product.

The library also has other classes that provide helpers, configuration parameters, and infrastructure to mock the *Client classes when testing your application.

• datacatalog_lineage_v1::LineageClient
• datacatalog_v1::DataCatalogClient
• datacatalog_v1::PolicyTagManagerClient
• datacatalog_v1::PolicyTagManagerSerializationClient

• Error Handling - describes how the library reports errors.
• How to Override the Default Endpoint - describes how to override the default endpoint.
• How to Override the Authentication Credentials - describes how to change the authentication credentials used by the library.
• Override Retry, Backoff, and Idempotency Policies - describes how to change the default retry policies.
• Environment Variables - describes environment variables that can configure the behavior of the library.

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

Last updated 2025-08-14 UTC.

[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14 UTC."],[[["This webpage provides documentation for the Google Cloud Data Catalog API C++ client library, a service for data discovery and metadata management."],["The latest release candidate version is 2.37.0-rc, but it is important to note that Google Cloud C++ client libraries do not adhere to Semantic Versioning."],["The library offers `*Client` classes like `DataCatalogClient`, `LineageClient`, `PolicyTagManagerClient`, and `PolicyTagManagerSerializationClient`, each exposing RPCs for specific services."],["The webpage also includes a quickstart guide with sample code showcasing basic usage of the Data Catalog API, along with links to resources for error handling, endpoint overriding, and authentication customization."],["The documentation lists all the prior versions starting from 2.37.0-rc all the way down to 2.11.0."]]],[]]

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