hasPartition()

MilvusClient interface. This method checks if a partition exists in the specified collection.

R<Boolean> hasPartition(HasPartitionParam requestParam);

HasPartitionParam

Use the HasPartitionParam.Builder to construct a HasPartitionParam object.

import io.milvus.param.HasPartitionParam;
HasPartitionParam.Builder builder = HasPartitionParam.newBuilder();

Methods of HasPartitionParam.Builder:

Method	Description	Parameters
withCollectionName(String collectionName)	Set the collection name. Collection name cannot be empty or null.	collectionName: The target collection name.
withDatabaseName(String databaseName)	Sets the database name. database name can be null for default database.	databaseName: The database name.
withPartitionName(String partitionName)	Set the partition name. Partition name cannot be empty or null.	partitionName: The target partition name.
build()	Construct a HasPartitionParam object.	N/A

The HasPartitionParam.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<Boolean> 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 error message of the exception.

• If the API succeeds, it returns R.Status.Success.

Example

import io.milvus.param.*;

HasPartitionParam param = HasPartitionParam.newBuilder()
        .withCollectionName(COLLECTION_NAME)
        .withPartitionName(PARTITION_NAME)
        .build();
R<Boolean> response = client.hasPartition(param);
if (response.getStatus() != R.Status.Success.getCode()) {
    System.out.println(response.getMessage());
}

System.out.println("Partition existence: " + response.getData());