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  • Java

hasPartition()

A 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:

MethodDescriptionParameters
withCollectionName(String collectionName)Sets the collection name. The collection name cannot be empty or null.collectionName: The name of the collection to check.
withPartitionName(String partitionName)Sets the partition name. The partition name cannot be empty or null.partitionName: The name of the partition to check.
build()Constructs 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.Unknow and the error message of the exception.

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

Example

import io.milvus.param.*;

HasPartitionParam param = HasPartitionParam.newBuilder()
        .withCollectionName(collectionName)
        .withPartitionName(partitionName)
        .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());