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<key, TreeMap<key2, Set<EventBean>>, for short. The top level can also be just Map<MultiKeyUntyped, TreeMap...>. 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<ComparableMultiKey, Set<EventBean>>>", 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.

Field Summary

Fields

Modifier and Type	Field and Description
protected CompositeIndexEnterRemove	chain
protected java.lang.String[]	optionalKeyedProps
protected java.lang.Class[]	optKeyCoercedTypes
protected java.lang.Class[]	optRangeCoercedTypes
protected java.lang.String[]	rangeProps
protected int	streamNum

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
java.lang.Class	getEventTableClass()
protected EventTableOrganization	getOrganization()
EventTable[]	makeEventTables(EventTableFactoryTableIdent tableIdent, ExprEvaluatorContext exprEvaluatorContext)
java.lang.String	toQueryPlan()

Methods inherited from class java.lang.Object

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

Field Detail

streamNum

protected final int streamNum

optionalKeyedProps

protected final java.lang.String[] optionalKeyedProps

rangeProps

protected final java.lang.String[] rangeProps

chain

protected final CompositeIndexEnterRemove chain

optKeyCoercedTypes

protected final java.lang.Class[] optKeyCoercedTypes

optRangeCoercedTypes

protected final java.lang.Class[] optRangeCoercedTypes

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)

Method Detail

makeEventTables

public EventTable[] makeEventTables(EventTableFactoryTableIdent tableIdent,
                                    ExprEvaluatorContext exprEvaluatorContext)

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

getOrganization

protected EventTableOrganization getOrganization()