org.springframework.batch.repeat
Interface RepeatContext

All Superinterfaces:

AttributeAccessor

All Known Implementing Classes:

CompositeCompletionPolicy.CompositeBatchContext, CountingCompletionPolicy.CountingBatchContext, RepeatContextSupport, SimpleCompletionPolicy.SimpleTerminationContext, TimeoutTerminationPolicy.TimeoutBatchContext

public interface RepeatContext
extends AttributeAccessor

Base interface for context which controls the state and completion / termination of a batch step. A new context is created for each call to the RepeatOperations. Within a batch callback code can communicate via the AttributeAccessor interface.

Author:

Dave Syer

See Also:

RepeatOperations.iterate(RepeatCallback)

Method Summary

void	close() Allow resources to be cleared, especially in destruction callbacks.
RepeatContext	getParent() If batches are nested, then the inner batch will be created with the outer one as a parent.
int	getStartedCount() Public access to a counter for the number of operations attempted.
boolean	isCompleteOnly() Public accessor for the complete flag.
boolean	isTerminateOnly() Public accessor for the termination flag.
void	registerDestructionCallback(String name, Runnable callback) Register a callback to be executed on close, associated with the attribute having the given name.
void	setCompleteOnly() Signal to the framework that the current batch should complete normally, independent of the current CompletionPolicy.
void	setTerminateOnly() Signal to the framework that the current batch should complete abnormally, independent of the current CompletionPolicy.

Methods inherited from interface org.springframework.core.AttributeAccessor

attributeNames, getAttribute, hasAttribute, removeAttribute, setAttribute

Method Detail

getParent

RepeatContext getParent()

If batches are nested, then the inner batch will be created with the outer one as a parent. This is an accessor for the parent if it exists.

Returns:

the parent context or null if there is none

getStartedCount

int getStartedCount()

Public access to a counter for the number of operations attempted.

Returns:

the number of batch operations started.

setCompleteOnly

void setCompleteOnly()

Signal to the framework that the current batch should complete normally, independent of the current CompletionPolicy.

isCompleteOnly

boolean isCompleteOnly()

Public accessor for the complete flag.

setTerminateOnly

void setTerminateOnly()

Signal to the framework that the current batch should complete abnormally, independent of the current CompletionPolicy.

isTerminateOnly

boolean isTerminateOnly()

Public accessor for the termination flag. If this flag is set then the complete flag will also be.

registerDestructionCallback

void registerDestructionCallback(String name,
                                 Runnable callback)

Register a callback to be executed on close, associated with the attribute having the given name. The Runnable callback should not throw any exceptions.

Parameters:

name - the name of the attribute to associated this callback with. If this attribute is removed the callback should never be called.

callback - a Runnable to execute when the context is closed.

close

void close()

Allow resources to be cleared, especially in destruction callbacks. Implementations should ensure that any registered destruction callbacks are executed here, as long as the corresponding attribute is still available.