public abstract class EvalBaseFirstProp extends java.lang.Object implements SelectExprProcessor
Constructor and Description |
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EvalBaseFirstProp(SelectExprContext selectExprContext,
EventType resultEventType) |
Modifier and Type | Method and Description |
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EventAdapterService |
getEventAdapterService() |
EventType |
getResultEventType()
Returns the event type that represents the select-clause items.
|
EventBean |
process(EventBean[] eventsPerStream,
boolean isNewData,
boolean isSynthesize,
ExprEvaluatorContext exprEvaluatorContext)
Computes the select-clause results and returns an event of the result event type that contains, in it's
properties, the selected items.
|
abstract EventBean |
processFirstCol(java.lang.Object result) |
public EvalBaseFirstProp(SelectExprContext selectExprContext, EventType resultEventType)
public abstract EventBean processFirstCol(java.lang.Object result)
public EventBean process(EventBean[] eventsPerStream, boolean isNewData, boolean isSynthesize, ExprEvaluatorContext exprEvaluatorContext)
SelectExprProcessor
process
in interface SelectExprProcessor
eventsPerStream
- - is per stream the eventisNewData
- - indicates whether we are dealing with new data (istream) or old data (rstream)isSynthesize
- - set to true to indicate that synthetic events are required for an iterator result setpublic EventAdapterService getEventAdapterService()
public EventType getResultEventType()
SelectExprProcessor
getResultEventType
in interface SelectExprProcessor