hasCollection()

This operation checks whether a specific collection exists.

Java

public Boolean hasCollection(HasCollectionReq request)

Request Syntax

Java

hasCollection(HasCollectionReq.builder()
    .databaseName(String databaseName)
    .collectionName(String collectionName)
    .build()
)

BUILDER METHODS:

• databaseName(String databaseName)

  The name of the database to which the target collection belongs.

• collectionName(String collectionName)

  The name of a collection.

RETURN TYPE:

bool

RETURNS:

A boolean value indicating whether the specified collection exists.

EXCEPTIONS:

• MilvusClientExceptions

  This exception will be raised when any error occurs during this operation.

Example

Java

import io.milvus.v2.client.ConnectConfig;
import io.milvus.v2.client.MilvusClientV2;
import io.milvus.v2.service.collection.request.HasCollectionReq;

// 1. Set up a client
ConnectConfig connectConfig = ConnectConfig.builder()
        .uri("http://localhost:19530")
        .token("root:Milvus")
        .build();

MilvusClientV2 client = new MilvusClientV2(connectConfig);

// 2. Check whether the collection exists
HasCollectionReq hasCollectionReq = HasCollectionReq.builder()
        .collectionName("test")
        .build();
Boolean resp = client.hasCollection(hasCollectionReq);