com.espertech.esper.epl.join.table
Class PropertyCompositeEventTableFactory

java.lang.Object
  com.espertech.esper.epl.join.table.PropertyCompositeEventTableFactory

All Implemented Interfaces:

EventTableFactory

public class PropertyCompositeEventTableFactory
extends java.lang.Object
implements EventTableFactory

For use when the index comprises of either two or more ranges or a unique key in combination with a range. Organizes into a TreeMap>, for short. The top level can also be just Map. Expected at least either (A) one key and one range or (B) zero keys and 2 ranges.

An alternative implementatation could have been based on "TreeMap>>", however the following implication arrive - not applicable for range-only lookups (since there the key can be the value itself - not applicable for multiple nested range as ordering not nested - each add/remove and lookup would also need to construct a key object.

Constructor Summary

PropertyCompositeEventTableFactory(int streamNum, EventType eventType, java.lang.String[] optionalKeyedProps, java.lang.Class[] optKeyCoercedTypes, java.lang.String[] rangeProps, java.lang.Class[] optRangeCoercedTypes)
Ctor.

Method Summary

java.lang.Class	getEventTableClass()
EventTable[]	makeEventTables()
java.lang.String	toQueryPlan()

Methods inherited from class java.lang.Object

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

Constructor Detail

PropertyCompositeEventTableFactory

public PropertyCompositeEventTableFactory(int streamNum,
                                          EventType eventType,
                                          java.lang.String[] optionalKeyedProps,
                                          java.lang.Class[] optKeyCoercedTypes,
                                          java.lang.String[] rangeProps,
                                          java.lang.Class[] optRangeCoercedTypes)

Ctor.

Parameters:

streamNum - - the stream number that is indexed

eventType - - types of events indexed

optRangeCoercedTypes - - property types

Method Detail

makeEventTables

public EventTable[] makeEventTables()

Specified by:

makeEventTables in interface EventTableFactory

getEventTableClass

public java.lang.Class getEventTableClass()

Specified by:

getEventTableClass in interface EventTableFactory

toQueryPlan

public java.lang.String toQueryPlan()

Specified by:

toQueryPlan in interface EventTableFactory