parReg.execute

Class HashMapResultCollector

java.lang.Object

parReg.execute.HashMapResultCollector

All Implemented Interfaces:

com.gemstone.gemfire.cache.execute.ResultCollector

public class HashMapResultCollector
extends Object
implements com.gemstone.gemfire.cache.execute.ResultCollector

Constructor Summary

Constructors

Constructor and Description
HashMapResultCollector()

Method Summary

Modifier and Type	Method and Description
void	addResult(com.gemstone.gemfire.distributed.DistributedMember memberID, Object resultOfSingleExecution) Adds a single function execution result from a remote node to the ResultCollector
void	clearResults() GemFire will invoke this method before re-executing function (in case of Function Execution HA) This is to clear the previous execution results from the result collector
void	endResults() Call back provided to caller, which is called after function execution is complete and caller can retrieve results using ResultCollector.getResult()
Object	getResult() Waits if necessary for the computation to complete, and then retrieves its result. If Function.hasResult() is false, upon calling ResultCollector.getResult() throws FunctionException.
Object	getResult(long timeout, TimeUnit unit) Waits if necessary for at most the given time for the computation to complete, and then retrieves its result, if available.

Methods inherited from class java.lang.Object

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

Constructor Detail

HashMapResultCollector

public HashMapResultCollector()

Method Detail

addResult

public void addResult(com.gemstone.gemfire.distributed.DistributedMember memberID,
                      Object resultOfSingleExecution)

Adds a single function execution result from a remote node to the ResultCollector

Specified by:

addResult in interface com.gemstone.gemfire.cache.execute.ResultCollector

Parameters:

resultOfSingleExecution -

memberID -

getResult

public Object getResult()
                 throws com.gemstone.gemfire.cache.execute.FunctionException

Waits if necessary for the computation to complete, and then retrieves its result.
If Function.hasResult() is false, upon calling ResultCollector.getResult() throws FunctionException.

Specified by:

getResult in interface com.gemstone.gemfire.cache.execute.ResultCollector

Returns:

the Object computed result

Throws:

com.gemstone.gemfire.cache.execute.FunctionException - if something goes wrong while retrieving the result

endResults

public void endResults()

Call back provided to caller, which is called after function execution is complete and caller can retrieve results using ResultCollector.getResult()

Specified by:

endResults in interface com.gemstone.gemfire.cache.execute.ResultCollector

getResult

public Object getResult(long timeout,
                        TimeUnit unit)
                 throws com.gemstone.gemfire.cache.execute.FunctionException

Waits if necessary for at most the given time for the computation to complete, and then retrieves its result, if available.
If Function.hasResult() is false, upon calling ResultCollector.getResult() throws FunctionException.

Specified by:

getResult in interface com.gemstone.gemfire.cache.execute.ResultCollector

Parameters:

timeout - the maximum time to wait

unit - the time unit of the timeout argument

Returns:

Object computed result

Throws:

com.gemstone.gemfire.cache.execute.FunctionException - if something goes wrong while retrieving the result

clearResults

public void clearResults()

GemFire will invoke this method before re-executing function (in case of Function Execution HA) This is to clear the previous execution results from the result collector

Specified by:

clearResults in interface com.gemstone.gemfire.cache.execute.ResultCollector

Since:

6.5