com.espertech.esper.epl.lookup
Class TableLookupStrategyNullRow
java.lang.Object
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.
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
TableLookupStrategyNullRow
public TableLookupStrategyNullRow()
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