com.espertech.esper.epl.lookup
Class TableLookupStrategyNullRow

java.lang.Object
  extended by com.espertech.esper.epl.lookup.TableLookupStrategyNullRow
All Implemented Interfaces:
TableLookupStrategy

public class TableLookupStrategyNullRow
extends Object
implements TableLookupStrategy

Implementation for a table lookup strategy that returns exactly one row but leaves that row as an undefined value.


Constructor Summary
TableLookupStrategyNullRow()
           
 
Method Summary
 Set<EventBean> lookup(EventBean[] events)
          Returns matched events for a set of events to look up for.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

TableLookupStrategyNullRow

public TableLookupStrategyNullRow()
Method Detail

lookup

public Set<EventBean> lookup(EventBean[] events)
Description copied from interface: TableLookupStrategy
Returns matched events for a set of events to look up for. Never returns an empty result set, always returns null to indicate no results.

Specified by:
lookup in interface TableLookupStrategy
Parameters:
events - to look up
Returns:
set of matching events, or null if none matching

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