Package com.espertech.esper.common.internal.epl.index.composite

Class PropertyCompositeEventTableFactory

java.lang.Object

com.espertech.esper.common.internal.epl.index.composite.PropertyCompositeEventTableFactory

All Implemented Interfaces:

EventTableFactory

public class PropertyCompositeEventTableFactory
extends 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<HashableMultiKey, 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	Description
protected final CompositeIndexEnterRemove	chain
protected final EventPropertyValueGetter	hashGetter
protected final String[]	optionalKeyedProps
protected final EPTypeClass[]	optKeyCoercedTypes
protected final EPTypeClass[]	optRangeCoercedTypes
protected final EventPropertyValueGetter[]	rangeGetters
protected final String[]	rangeProps
protected final int	streamNum
protected final MultiKeyFromObjectArray	transformFireAndForget

Constructor Summary

Constructors

Constructor	Description
PropertyCompositeEventTableFactory(int streamNum, String[] optionalKeyedProps, EPTypeClass[] optKeyCoercedTypes, EventPropertyValueGetter hashGetter, MultiKeyFromObjectArray transformFireAndForget, String[] rangeProps, EPTypeClass[] optRangeCoercedTypes, EventPropertyValueGetter[] rangeGetters)

Method Summary

Modifier and Type	Method	Description
CompositeIndexEnterRemove	getChain()
Class	getEventTableClass()
protected EventTableOrganization	getOrganization()
EventTable[]	makeEventTables(ExprEvaluatorContext exprEvaluatorContext, Integer subqueryNumber)
String	toQueryPlan()

Methods inherited from class java.lang.Object

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

Field Details

streamNum

protected final int streamNum

optionalKeyedProps

protected final String[] optionalKeyedProps

optKeyCoercedTypes

protected final EPTypeClass[] optKeyCoercedTypes

hashGetter

protected final EventPropertyValueGetter hashGetter

transformFireAndForget

protected final MultiKeyFromObjectArray transformFireAndForget

rangeProps

protected final String[] rangeProps

optRangeCoercedTypes

protected final EPTypeClass[] optRangeCoercedTypes

rangeGetters

protected final EventPropertyValueGetter[] rangeGetters

chain

protected final CompositeIndexEnterRemove chain

Constructor Details

PropertyCompositeEventTableFactory

public PropertyCompositeEventTableFactory(int streamNum,
 String[] optionalKeyedProps,
 EPTypeClass[] optKeyCoercedTypes,
 EventPropertyValueGetter hashGetter,
 MultiKeyFromObjectArray transformFireAndForget,
 String[] rangeProps,
 EPTypeClass[] optRangeCoercedTypes,
 EventPropertyValueGetter[] rangeGetters)

Method Details

makeEventTables

public EventTable[] makeEventTables(ExprEvaluatorContext exprEvaluatorContext,
 Integer subqueryNumber)

Specified by:

makeEventTables in interface EventTableFactory

getEventTableClass

public Class getEventTableClass()

Specified by:

getEventTableClass in interface EventTableFactory

getChain

public CompositeIndexEnterRemove getChain()

toQueryPlan

public String toQueryPlan()

Specified by:

toQueryPlan in interface EventTableFactory

getOrganization

protected EventTableOrganization getOrganization()