Package org.apache.ignite.internal.processors.cache.persistence.metastorage.pendingtask

Class DurableBackgroundTaskResult<R>

java.lang.Object

org.apache.ignite.internal.processors.cache.persistence.metastorage.pendingtask.DurableBackgroundTaskResult<R>

Type Parameters:

R - Type of the result of the task.

public class DurableBackgroundTaskResult<R>
extends Object

Result of executing a durable background task.

There may be the following states:

• Completed - the task has completed its execution and should be deleted.
• Restart - the task has not yet completed its execution and must be restarted.

Method Summary

Modifier and Type	Method	Description
static <R> DurableBackgroundTaskResult<R>	complete()	Creation of a completed task execution result that does not require restarting it.
static <R> DurableBackgroundTaskResult<R>	complete(@Nullable Throwable err)	Creation of a completed task execution result that does not require restarting it.
static <R> DurableBackgroundTaskResult<R>	complete(R res)	Creation of a completed task execution result that does not require restarting it.
boolean	completed()	Checking the completion of the task.
@Nullable Throwable	error()	Getting a task execution error.
boolean	restart()	Checking if the task needs to be restarted.
static <R> DurableBackgroundTaskResult<R>	restart(@Nullable Throwable err)	Creation of a task execution result that requires its restart.
R	result()	Getting the result of the task.
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

complete

public static <R> DurableBackgroundTaskResult<R> complete(@Nullable
                                                          @Nullable Throwable err)

Creation of a completed task execution result that does not require restarting it.

Parameters:

err - An error occurred while executing the task.

Returns:

Result of executing a durable background task.

complete

public static <R> DurableBackgroundTaskResult<R> complete(@Nullable
                                                          R res)

Creation of a completed task execution result that does not require restarting it.

Parameters:

res - Result of the task.

Returns:

Result of executing a durable background task.

complete

public static <R> DurableBackgroundTaskResult<R> complete()

Creation of a completed task execution result that does not require restarting it.

Returns:

Result of executing a durable background task.

restart

public static <R> DurableBackgroundTaskResult<R> restart(@Nullable
                                                         @Nullable Throwable err)

Creation of a task execution result that requires its restart.

Parameters:

err - An error occurred while executing the task.

Returns:

Result of executing a durable background task.

completed

public boolean completed()

Checking the completion of the task.

Returns:

True if completed.

restart

public boolean restart()

Checking if the task needs to be restarted.

Returns:

True if the task needs to be restarted.

error

@Nullable
public @Nullable Throwable error()

Getting a task execution error.

Returns:

An error occurred while executing the task.

result

@Nullable
public R result()

Getting the result of the task.

Returns:

Result of the task.

toString

public String toString()

Overrides:

toString in class Object