Class OperationCallable<RequestT,ResponseT,MetadataT> (2.70.0)

public abstract class OperationCallable<RequestT,ResponseT,MetadataT>

An OperationCallable is an immutable object which is capable of initiating RPC calls to long-running API methods and returning an OperationFuture to manage the polling of the Operation and getting the response.

It is considered advanced usage for a user to create an OperationCallable themselves. This class is intended to be created by a generated client class, and configured by instances of OperationCallSettings.Builder which are exposed through the client settings class.

Inheritance

java.lang.Object > OperationCallable<RequestT,ResponseT,MetadataT>

Inherited Members

Object.clone()

Object.equals(Object)

Object.finalize()

Object.getClass()

Object.hashCode()

Object.notify()

Object.notifyAll()

Object.toString()

Object.wait()

Object.wait(long)

Object.wait(long,int)

Type Parameters
Name	Description
`RequestT`
`ResponseT`
`MetadataT`

Constructors

OperationCallable()

protected OperationCallable()

Methods

call(RequestT request)

public ResponseT call(RequestT request)

Same as #call(Object, ApiCallContext), with a null context.

Parameter
Name	Description
`request`	`RequestT` The request to initiate the operation.

Returns
Type	Description
`ResponseT`	the call result

call(RequestT request, ApiCallContext context)

public ResponseT call(RequestT request, ApiCallContext context)

Perform a call synchronously.

Parameters
Name	Description
`request`	`RequestT` The request to initiate the operation.
`context`	`ApiCallContext` ApiCallContext to make the call with

Returns
Type	Description
`ResponseT`	the call result

cancel(String operationName)

public ApiFuture<Void> cancel(String operationName)

Sends a cancellation request to the server for the operation with name operationName.

Parameter
Name	Description
`operationName`	`String` The name of the operation to cancel.

Returns
Type	Description
`ApiFuture<Void>`	the future which completes once the operation is canceled on the server side.

cancel(String operationName, ApiCallContext context)

public abstract ApiFuture<Void> cancel(String operationName, ApiCallContext context)

Sends a cancellation request to the server for the operation with name operationName.

Parameters
Name	Description
`operationName`	`String` The name of the operation to cancel.
`context`	`ApiCallContext` ApiCallContext to make the call with

Returns
Type	Description
`ApiFuture<Void>`	the future which completes once the operation is canceled on the server side.

futureCall(RequestT request)

public OperationFuture<ResponseT,MetadataT> futureCall(RequestT request)

Same as #futureCall(Object, ApiCallContext), with a null context.

Parameter
Name	Description
`request`	`RequestT` request

Returns
Type	Description
`OperationFuture<ResponseT,MetadataT>`	ApiFuture for the call result

futureCall(RequestT request, ApiCallContext context)

public abstract OperationFuture<ResponseT,MetadataT> futureCall(RequestT request, ApiCallContext context)

Initiates an operation asynchronously.

Parameters
Name	Description
`request`	`RequestT` The request to initiate the operation.
`context`	`ApiCallContext` ApiCallContext to make the call with

Returns
Type	Description
`OperationFuture<ResponseT,MetadataT>`	OperationFuture for the call result

resumeFutureCall(String operationName)

public OperationFuture<ResponseT,MetadataT> resumeFutureCall(String operationName)

Creates a new OperationFuture to watch an operation that has been initiated previously. Note: This is not type-safe at static time; the result type can only be checked once the operation finishes.

Parameter
Name	Description
`operationName`	`String` The name of the operation to resume.

Returns
Type	Description
`OperationFuture<ResponseT,MetadataT>`	OperationFuture for the call result.

resumeFutureCall(String operationName, ApiCallContext context)

public abstract OperationFuture<ResponseT,MetadataT> resumeFutureCall(String operationName, ApiCallContext context)