org.glassfish.jersey.process.internal
Interface StagingContext<DATA>

Type Parameters:

DATA - supported transformable data type.

All Known Implementing Classes:

DefaultStagingContext

public interface StagingContext<DATA>

Stage applying context.

Starting at a root, stages are applied and the returned continuation is resolved until a terminal stage, the one that does not return a continuation that could be further followed, is reached. With each stage the registered staging context callback methods are invoked before and after a stage is applied.

Author:

Marek Potociar (marek.potociar at oracle.com)

See Also:

LinearStageRunner, LinearStageProcessor, TreeStageProcessor

Method Summary

void	afterStage(Stage<DATA,?> stage, DATA data) Callback method invoked after each stage in the continuation of stages is applied.
void	beforeStage(Stage<DATA,?> stage, DATA data) Callback method invoked before each stage in the continuation of stages is applied.
com.google.common.base.Optional<DATA>	data() Get the processed data in the actual state in the current processing context.
com.google.common.base.Optional<Stage<DATA,?>>	lastStage() Get the last stage applied in the current staging context.

Method Detail

beforeStage

void beforeStage(Stage<DATA,?> stage,
                 DATA data)

Callback method invoked before each stage in the continuation of stages is applied.

Parameters:

stage - the stage to be applied.

data - the data to be transformed by the stage.

afterStage

void afterStage(Stage<DATA,?> stage,
                DATA data)

Callback method invoked after each stage in the continuation of stages is applied.

Parameters:

stage - the stage recently applied.

data - the stage transformation result.

lastStage

com.google.common.base.Optional<Stage<DATA,?>> lastStage()

Get the last stage applied in the current staging context. The returned stage can be Optional.absent() in case no stage has been applied yet.

Returns:

last stage applied in the current processing context.

data

com.google.common.base.Optional<DATA> data()

Get the processed data in the actual state in the current processing context.

Returns:

actual state of the processed data.