io.rouz.flo.freezer

Class EvaluatingContext

java.lang.Object

io.rouz.flo.freezer.EvaluatingContext

public class EvaluatingContext
extends Object

A wrapper context that allows for evaluating specific tasks. This class is intended to be used in pairing with PersistingContext.

See evaluateTaskFrom(Path).

todo: support reading and writing from arbitrary Path types

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private class	EvaluatingContext.SpecificEval

Field Summary

Fields

Modifier and Type	Field and Description
private Path	basePath
private TaskContext	delegate
(package private) static String	OUTPUT_SUFFIX

Constructor Summary

Constructors

Constructor and Description
EvaluatingContext(Path basePath, TaskContext delegate)

Method Summary

Modifier and Type	Method and Description
<T> TaskContext.Value<T>	evaluateTaskFrom(Path persistedTask) Evaluate a persisted task, expecting it's input values to exist as "_out" files in the same directory.
private <T> void	persist(TaskId taskId, T output)
private Path	resolveExistingOutput(TaskId taskId)

Methods inherited from class java.lang.Object

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

Field Detail

OUTPUT_SUFFIX

static final String OUTPUT_SUFFIX

See Also:

Constant Field Values

basePath

private final Path basePath

delegate

private final TaskContext delegate

Constructor Detail

EvaluatingContext

public EvaluatingContext(Path basePath,
                         TaskContext delegate)

Method Detail

evaluateTaskFrom

public <T> TaskContext.Value<T> evaluateTaskFrom(Path persistedTask)

Evaluate a persisted task, expecting it's input values to exist as "_out" files in the same directory.

The output of the evaluated task will be persisted in the same directory.

Type Parameters:

T - The task output type

Parameters:

persistedTask - A path to the persisted task file that should be evaluated

Returns:

The task output value

resolveExistingOutput

private Path resolveExistingOutput(TaskId taskId)

persist

private <T> void persist(TaskId taskId,
                         T output)