weka.knowledgeflow

Interface StepTaskCallback<T>

Type Parameters:

T - the result return type (gets encapsulated in an ExecutionResult)

public interface StepTaskCallback<T>

Callback that Steps can use when executing StepTasks via EnvironmentManager.submitTask().

Author:

Mark Hall (mhall{[at]}pentaho{[dot]}com)

Method Summary

Modifier and Type	Method and Description
void	taskFailed(StepTask<T> failedTask, ExecutionResult<T> failedResult) Gets called if the StepTask fails for some reason
void	taskFinished(ExecutionResult<T> result) Gets called when the StepTask finishes processing

Method Detail

taskFinished

void taskFinished(ExecutionResult<T> result)
           throws java.lang.Exception

Gets called when the StepTask finishes processing

Parameters:

result - the ExecutionrRsult produced by the task

Throws:

java.lang.Exception - if a problem occurs

taskFailed

void taskFailed(StepTask<T> failedTask,
                ExecutionResult<T> failedResult)
         throws java.lang.Exception

Gets called if the StepTask fails for some reason

Parameters:

failedTask - the that failed

failedResult - the produced by the failed task (might contain information pertaining to the failure)

Throws:

java.lang.Exception - if a problem occurs