listCollections()

This operation lists all existing collections.

Java

public ListCollectionsResp listCollections()

Request Syntax

Java

listCollections()

RETURN TYPE:

ListCollectionsResp

RETURNS:

A ListCollectionsResp object containing a list of collection names. If there is not any collection, an empty list will be returned.

PARAMETERS:

• collectionNames (List<String>)

  A list of strings containing the names of all existing collections.

• collectionInfos (List<CollectionInfo>)

  A list of CollectionInfo objects. A CollectionInfo object has the following fields:

  • collectionName (String)

    The name of a collection.

  • shardNum (Integer)

    The number of shards in the above collection.

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.response.ListCollectionsResp;

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

MilvusClientV2 client = new MilvusClientV2(connectConfig);

// 2. List collections
ListCollectionsResp listAliasResp = client.listCollections();