org.gridgain.grid.kernal.visor.cmd

Class VisorOneNodeTask<A,R>

java.lang.Object

org.gridgain.grid.kernal.visor.cmd.VisorMultiNodeTask<A,R,R>

org.gridgain.grid.kernal.visor.cmd.VisorOneNodeTask<A,R>

All Implemented Interfaces:

Serializable, GridComputeTask<GridBiTuple<Set<UUID>,A>,R>

Direct Known Subclasses:

VisorCachesClearTask, VisorCachesCompactTask, VisorCachesSwapBackupsTask, VisorConfigCollectorTask, VisorLicenseUpdateTask, VisorQueryNextPageTask, VisorQueryTask

public abstract class VisorOneNodeTask<A,R>
extends VisorMultiNodeTask<A,R,R>

Base class for Visor tasks intended to query data from a single node.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.gridgain.grid.kernal.visor.cmd.VisorMultiNodeTask

taskArg

Constructor Summary

Constructors

Constructor and Description
VisorOneNodeTask()

Method Summary

Methods

Modifier and Type	Method and Description
R	reduce(List<GridComputeJobResult> results) Reduces (or aggregates) results received so far into one compound result to be returned to caller via GridComputeTaskFuture.get() method.

Methods inherited from class org.gridgain.grid.kernal.visor.cmd.VisorMultiNodeTask

job, map, result

Methods inherited from class java.lang.Object

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

Constructor Detail

VisorOneNodeTask

public VisorOneNodeTask()

Method Detail

reduce

@Nullable
public R reduce(List<GridComputeJobResult> results)
         throws GridException

Reduces (or aggregates) results received so far into one compound result to be returned to caller via GridComputeTaskFuture.get() method.

Note, that if some jobs did not succeed and could not be failed over then the list of results passed into this method will include the failed results. Otherwise, failed results will not be in the list.

Parameters:

results - Received results of broadcasted remote executions. Note that if task class has GridComputeTaskNoResultCache annotation, then this list will be empty.

Returns:

Grid job result constructed from results of remote executions.

Throws:

GridException - If reduction or results caused an error. This exception will be thrown out of GridComputeTaskFuture.get() method.