listCollections()

A MilvusClient interface. This method lists all the collections*.*

R<ListCollectionsResponse> listCollections(ListCollectionsParam requestParam);

ListCollectionsParam

Use the ListCollectionsParam.Builder to construct a ListCollectionsParam object.

import io.milvus.param.highlevel.collection.ListCollectionsParam;
ListCollectionsParam.Builder builder = ListCollectionsParam.newBuilder();

Methods of ListCollectionsParam.Builder:

Method	Description	Parameters
build()	Constructs a ListCollectionsParam object	N/A

The ListCollectionsParam.Builder.build() can throw the following exceptions:

• ParamException: error if the parameter is invalid.

Returns

This method catches all the exceptions and returns an R<ListCollectionsResponse> object.

• If the API fails on the server side, it returns the error code and message from the server.

• If the API fails by RPC exception, it returns R.Status.Unknown and the error message of the exception.

• If the API succeeds, it returns a valid ListCollectionsResponse held by the R template.

Example

import io.milvus.param.highlevel.collection.*;

ListCollectionsParam param = ListCollectionsParam.newBuilder()
        .build();

R<ListCollectionsResponse> response = client.listCollections(param);
if (response.getStatus() != R.Status.Success.getCode()) {
    System.out.println(response.getMessage());
}
for (String collectionName : response.getData().collectionNames) {
    System.out.println(collectionName);
}