org.apache.hadoop.hbase.ipc

Class CoprocessorRpcUtils.BlockingRpcCallback<R>

java.lang.Object

org.apache.hadoop.hbase.ipc.CoprocessorRpcUtils.BlockingRpcCallback<R>

All Implemented Interfaces:

com.google.protobuf.RpcCallback<R>

Enclosing class:

CoprocessorRpcUtils

@InterfaceAudience.Private
public static class CoprocessorRpcUtils.BlockingRpcCallback<R>
extends Object
implements com.google.protobuf.RpcCallback<R>

Simple RpcCallback implementation providing a Future-like BlockingRpcCallback.get() method, which will block util the instance's BlockingRpcCallback.run(Object) method has been called. R is the RPC response type that will be passed to the run(Object) method.

Constructor Summary

Constructors

Constructor and Description
BlockingRpcCallback()

Method Summary

Modifier and Type	Method and Description
R	get() Returns the parameter passed to run(Object) or null if a null value was passed.
void	run(R parameter) Called on completion of the RPC call with the response object, or null in the case of an error.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BlockingRpcCallback

public BlockingRpcCallback()

Method Detail

run

public void run(R parameter)

Called on completion of the RPC call with the response object, or null in the case of an error.

Specified by:

run in interface com.google.protobuf.RpcCallback<R>

Parameters:

parameter - the response object or null if an error occurred

get

public R get()
      throws IOException

Returns the parameter passed to run(Object) or null if a null value was passed. When used asynchronously, this method will block until the run(Object) method has been called.

Returns:

the response object or null if no response was passed

Throws:

IOException