HasCollection()

This operation checks whether the specified collection exists.

Status HasCollection(const HasCollectionRequest& request, HasCollectionResponse& response)

Request Syntax

auto request = HasCollectionRequest()
    .WithDatabaseName(db_name)
    .WithCollectionName(collection_name);

REQUEST METHODS:

• WithDatabaseName(const std::string& db_name)

  Sets the name of the target database. The default database applies if it is empty.

• WithCollectionName(const std::string& collection_name)

  Sets the name of the target collection.

RETURNS:

Status with HasCollectionResponse

Check status.IsOk() to confirm success.

EXCEPTIONS:

• StatusCode

  Check status.Code() and status.Message() for error details.

Example

#include "milvus/MilvusClientV2.h"
auto client = milvus::MilvusClientV2::Create();

milvus::ConnectParam connect_param{"http://localhost:19530", "root:Milvus"};
auto status = client->Connect(connect_param);
if (!status.IsOk()) {
    std::cout << status.Message() << std::endl;
}

milvus::HasCollectionResponse response;
status = client->HasCollection(
    milvus::HasCollectionRequest()
        .WithCollectionName("my_collection"),
    response);
if (!status.IsOk()) {
    std::cout << status.Message() << std::endl;
}
std::cout << "Collection exists: " << response.HasCollection() << std::endl;