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

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

All Implemented Interfaces:

EventTableFactory

Direct Known Subclasses:

PropertyIndexedEventTableCoerceAddFactory

public class PropertyIndexedEventTableFactory
extends java.lang.Object
implements EventTableFactory

Index factory that organizes events by the event property values into hash buckets. Based on a HashMap with MultiKeyUntyped keys that store the property values. Takes a list of property names as parameter. Doesn't care which event type the events have as long as the properties exist. If the same event is added twice, the class throws an exception on add.

Field Summary

protected java.lang.String	optionalIndexName
protected EventPropertyGetter[]	propertyGetters Getters for properties.
protected java.lang.String[]	propertyNames
protected int	streamNum
protected boolean	unique

Constructor Summary

PropertyIndexedEventTableFactory(int streamNum, EventType eventType, java.lang.String[] propertyNames, boolean unique, java.lang.String optionalIndexName)
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

Field Detail

streamNum

protected final int streamNum

propertyNames

protected final java.lang.String[] propertyNames

unique

protected final boolean unique

optionalIndexName

protected final java.lang.String optionalIndexName

propertyGetters

protected final EventPropertyGetter[] propertyGetters

Getters for properties.

Constructor Detail

PropertyIndexedEventTableFactory

public PropertyIndexedEventTableFactory(int streamNum,
                                        EventType eventType,
                                        java.lang.String[] propertyNames,
                                        boolean unique,
                                        java.lang.String optionalIndexName)

Ctor.

Parameters:

streamNum - - the stream number that is indexed

eventType - - types of events indexed

propertyNames - - property names to use for indexing

unique -

optionalIndexName -

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