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

Class PropertyCompositeEventTable

java.lang.Object

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

All Implemented Interfaces:

EventTable, Iterable<EventBean>

Direct Known Subclasses:

PropertyCompositeEventTableImpl

public abstract class PropertyCompositeEventTable
extends Object
implements EventTable

Field Summary

Fields

Modifier and Type	Field	Description
protected final PropertyCompositeEventTableFactory	factory

Constructor Summary

Constructors

Constructor	Description
PropertyCompositeEventTable(PropertyCompositeEventTableFactory factory)

Method Summary

Modifier and Type	Method	Description
void	add(EventBean[] events, ExprEvaluatorContext exprEvaluatorContext)	Add an array of events.
void	addRemove(EventBean[] newData, EventBean[] oldData, ExprEvaluatorContext exprEvaluatorContext)	Add and remove events from table.
abstract Map<Object,Object>	getIndex()	Return the index object itself, or an object-array for multiple index structures.
MultiKeyFromObjectArray	getMultiKeyTransform()
Integer	getNumberOfEvents()	If the number of events is readily available, an implementation will return that number or it may return null to indicate that the count is not readily available.
EPTypeClass[]	getOptKeyCoercedTypes()
EPTypeClass[]	getOptRangeCoercedTypes()
EventTableOrganization	getOrganization()
abstract CompositeIndexQueryResultPostProcessor	getPostProcessor()
void	remove(EventBean[] events, ExprEvaluatorContext exprEvaluatorContext)	Remove events.
String	toQueryPlan()
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.espertech.esper.common.internal.epl.index.base.EventTable

add, clear, destroy, getNumKeys, getProviderClass, isEmpty, iterator, remove

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Details

factory

protected final PropertyCompositeEventTableFactory factory

Constructor Details

PropertyCompositeEventTable

public PropertyCompositeEventTable(PropertyCompositeEventTableFactory factory)

Method Details

getIndex

public abstract Map<Object,Object> getIndex()

Description copied from interface: EventTable

Return the index object itself, or an object-array for multiple index structures.

May return null if the information is not readily available, i.e. externally maintained index

Specified by:

getIndex in interface EventTable

Returns:

index object

getPostProcessor

public abstract CompositeIndexQueryResultPostProcessor getPostProcessor()

addRemove

public void addRemove(EventBean[] newData,
 EventBean[] oldData,
 ExprEvaluatorContext exprEvaluatorContext)

Description copied from interface: EventTable

Add and remove events from table.

It is up to the index to decide whether to add first and then remove, or whether to remove and then add.

It is important to note that a given event can be in both the removed and the added events. This means that unique indexes probably need to remove first and then add. Most other non-unique indexes will add first and then remove since the an event can be both in the add and the remove stream.

Specified by:

addRemove in interface EventTable

Parameters:

newData - to add

oldData - to remove

exprEvaluatorContext - evaluator context

add

public void add(EventBean[] events,
 ExprEvaluatorContext exprEvaluatorContext)

Add an array of events. Same event instance is not added twice. Event properties should be immutable. Allow null passed instead of an empty array.

Specified by:

add in interface EventTable

Parameters:

events - to add

exprEvaluatorContext - evaluator context

Throws:

IllegalArgumentException - if the event was already existed in the index

remove

public void remove(EventBean[] events,
 ExprEvaluatorContext exprEvaluatorContext)

Remove events.

Specified by:

remove in interface EventTable

Parameters:

events - to be removed, can be null instead of an empty array.

exprEvaluatorContext - evaluator context

Throws:

IllegalArgumentException - when the event could not be removed as its not in the index

toString

public String toString()

Overrides:

toString in class Object

toQueryPlan

public String toQueryPlan()

Specified by:

toQueryPlan in interface EventTable

getNumberOfEvents

public Integer getNumberOfEvents()

Description copied from interface: EventTable

If the number of events is readily available, an implementation will return that number or it may return null to indicate that the count is not readily available.

Specified by:

getNumberOfEvents in interface EventTable

Returns:

number of events

getOrganization

public EventTableOrganization getOrganization()

Specified by:

getOrganization in interface EventTable

getOptKeyCoercedTypes

public EPTypeClass[] getOptKeyCoercedTypes()

getOptRangeCoercedTypes

public EPTypeClass[] getOptRangeCoercedTypes()

getMultiKeyTransform

public MultiKeyFromObjectArray getMultiKeyTransform()