net.esper.eql.expression
Interface SelectExprProcessor

All Known Implementing Classes:
SelectExprEvalProcessor, SelectExprJoinWildcardProcessor

public interface SelectExprProcessor

Interface for processors of select-clause items, implementors are computing results based on matching events.


Method Summary
 EventType getResultEventType()
          Returns the event type that represents the select-clause items.
 EventBean process(EventBean[] eventsPerStream)
          Computes the select-clause results and returns an event of the result event type that contains, in it's properties, the selected items.
 

Method Detail

getResultEventType

EventType getResultEventType()
Returns the event type that represents the select-clause items.

Returns:
event type representing select-clause items

process

EventBean process(EventBean[] eventsPerStream)
Computes the select-clause results and returns an event of the result event type that contains, in it's properties, the selected items.

Parameters:
eventsPerStream -
Returns:
event with properties containing selected items