com.espertech.esper.view.window

Class TimeBatchViewFactoryParams

java.lang.Object

com.espertech.esper.view.window.TimeBatchViewFactoryParams

Direct Known Subclasses:

TimeBatchViewFactory, TimeLengthBatchViewFactory

public class TimeBatchViewFactoryParams
extends Object

Parameters for batch views that provides common data flow parameter parsing.

Field Summary

Fields

Modifier and Type	Field and Description
protected EventType	eventType Event type
protected static String	FORCE_UPDATE_KEYWORD Keyword for force update, i.e.
protected boolean	isForceUpdate Indicate whether to output only if there is data, or to keep outputting empty batches.
protected boolean	isStartEager Indicate whether to output only if there is data, or to keep outputting empty batches.
protected static String	START_EAGER_KEYWORD Keyword for starting eager, i.e.
protected ExprTimePeriodEvalDeltaConstFactory	timeDeltaComputationFactory Number of msec before batch fires (either interval or number of events).

Constructor Summary

Constructors

Constructor and Description
TimeBatchViewFactoryParams()

Method Summary

Modifier and Type	Method and Description
boolean	isForceUpdate()
boolean	isStartEager()
protected void	processKeywords(Object keywords, String errorMessage) Convert keywords into isForceUpdate and isStartEager members

Methods inherited from class java.lang.Object

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

Field Detail

FORCE_UPDATE_KEYWORD

protected static final String FORCE_UPDATE_KEYWORD

Keyword for force update, i.e. update if no data.

See Also:

Constant Field Values

START_EAGER_KEYWORD

protected static final String START_EAGER_KEYWORD

Keyword for starting eager, i.e. start early.

See Also:

Constant Field Values

eventType

protected EventType eventType

Event type

timeDeltaComputationFactory

protected ExprTimePeriodEvalDeltaConstFactory timeDeltaComputationFactory

Number of msec before batch fires (either interval or number of events).

isForceUpdate

protected boolean isForceUpdate

Indicate whether to output only if there is data, or to keep outputting empty batches.

isStartEager

protected boolean isStartEager

Indicate whether to output only if there is data, or to keep outputting empty batches.

Constructor Detail

TimeBatchViewFactoryParams

public TimeBatchViewFactoryParams()

Method Detail

processKeywords

protected void processKeywords(Object keywords,
                               String errorMessage)
                        throws ViewParameterException

Convert keywords into isForceUpdate and isStartEager members

Parameters:

keywords - flow control keyword string expression

errorMessage - error message

Throws:

ViewParameterException - if parsing failed

isForceUpdate

public boolean isForceUpdate()

isStartEager

public boolean isStartEager()