R<T>

A template class to hold the status code, error message, and the response returned by each client interface.

Java

package io.milvus.param;
public class R<T>

R.Status

R.Status is an enumeration of the status codes. Each R<T> object holds an integer value that can be mapped to the R.Status.

Note: Not all status codes are used, some of them are reserved.

Status	Code	Description
IllegalResponse	-6	The response returned by the server is incorrect. Parsing the response on the client side fails.
ParamError	-5	The parameter is illegal on the client side.
VersionMismatch	-4	*This error is reserved and not used for now.
Unknown	-3	General error for an unknown reason.
ClientNotConnected	-2	The connection is not ready.
RpcError	-1	*This error is reserved and not used for now.
Success	0	Operation succeeded.
UnexpectedError	1	Error caused by unexpected reason.
ConnectFailed	2	*This error is reserved and not used for now.
PermissionDenied	3	*This error is reserved and not used for now.
CollectionNotExists	4	*This error is reserved and not used for now.
IllegalArgument	5	The parameter is illegal on the server side.
IllegalDimension	7	*This error is reserved and not used for now.
IllegalIndexType	8	*This error is reserved and not used for now.
IllegalCollectionName	9	*This error is reserved and not used for now.
IllegalTOPK	10	*This error is reserved and not used for now.
IllegalRowRecord	11	*This error is reserved and not used for now.
IllegalVectorID	12	*This error is reserved and not used for now.
IllegalSearchResult	13	*This error is reserved and not used for now.
FileNotFound	14	*This error is reserved and not used for now.
MetaFailed	15	Getting metadata fails on the server side.
CacheFailed	16	*This error is reserved and not used for now.
CannotCreateFolder	17	*This error is reserved and not used for now.
CannotCreateFile	18	*This error is reserved and not used for now.
CannotDeleteFolder	19	*This error is reserved and not used for now.
CannotDeleteFile	20	*This error is reserved and not used for now.
BuildIndexError	21	*This error is reserved and not used for now.
IllegalNLIST	22	*This error is reserved and not used for now.
IllegalMetricType	23	*This error is reserved and not used for now.
OutOfMemory	24	*This error is reserved and not used for now.
IndexNotExist	25	*This error is reserved and not used for now.
EmptyCollection	26	*This error is reserved and not used for now.

Methods

Method	Description	Return
getMessage()	Gets the error message.	String
getStatus()	Gets the status code.	Integer
getData()	Gets the response object returned by the server.	RPC response class

Example

Java

import io.milvus.param.*;

R<RpcStatus> response = client.dropCollection(DropCollectionParam.newBuilder()
        .withCollectionName(COLLECTION_NAME)
        .build());
if (response.getStatus() != R.Status.Success.getCode()) {
    System.out.println(response.getMessage());
}