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

java.lang.Object
  com.espertech.esper.epl.join.table.PropertyIndexedEventTable
      com.espertech.esper.epl.join.table.PropertyIndexedEventTableUnadorned

All Implemented Interfaces:

EventTable, java.lang.Iterable<EventBean>

Direct Known Subclasses:

PropertyIndexedEventTableCoerceAdd

public class PropertyIndexedEventTableUnadorned
extends PropertyIndexedEventTable

Field Summary

protected java.util.Map<MultiKeyUntyped,java.util.Set<EventBean>>

propertyIndex

Fields inherited from class com.espertech.esper.epl.join.table.PropertyIndexedEventTable

organization, propertyGetters

Constructor Summary

PropertyIndexedEventTableUnadorned(EventPropertyGetter[] propertyGetters, EventTableOrganization organization)

Method Summary

void	add(EventBean theEvent) Add event to table.
void	clear() Clear out index.
void	destroy() Destroy index.
java.lang.Object	getIndex() Return the index object itself, or an object-array for multiple index structures.
java.lang.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.
int	getNumKeys() If the index retains events using some key-based organization this returns the number of keys, and may return null to indicate that either the number of keys is not available or costly to obtain.
java.lang.Class	getProviderClass()
boolean	isEmpty() Returns true if the index is empty, or false if not
java.util.Iterator<EventBean>	iterator() Returns an iterator over events in the table.
java.util.Set<EventBean>	lookup(java.lang.Object[] keys) Returns the set of events that have the same property value as the given event.
void	remove(EventBean theEvent) Remove event from table.

Methods inherited from class com.espertech.esper.epl.join.table.PropertyIndexedEventTable

add, addRemove, getMultiKey, getOrganization, remove, toQueryPlan

Methods inherited from class java.lang.Object

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

Field Detail

propertyIndex

protected final java.util.Map<MultiKeyUntyped,java.util.Set<EventBean>> propertyIndex

Constructor Detail

PropertyIndexedEventTableUnadorned

public PropertyIndexedEventTableUnadorned(EventPropertyGetter[] propertyGetters,
                                          EventTableOrganization organization)

Method Detail

lookup

public java.util.Set<EventBean> lookup(java.lang.Object[] keys)

Returns the set of events that have the same property value as the given event.

Specified by:

lookup in class PropertyIndexedEventTable

Parameters:

keys - to compare against

Returns:

set of events with property value, or null if none found (never returns zero-sized set)

add

public void add(EventBean theEvent)

Description copied from interface: EventTable

Add event to table.

Parameters:

theEvent - to add

remove

public void remove(EventBean theEvent)

Description copied from interface: EventTable

Remove event from table.

Parameters:

theEvent - to remove

isEmpty

public boolean isEmpty()

Description copied from interface: EventTable

Returns true if the index is empty, or false if not

Returns:

true for empty index

iterator

public java.util.Iterator<EventBean> iterator()

Description copied from interface: EventTable

Returns an iterator over events in the table.

Returns:

table iterator

clear

public void clear()

Description copied from interface: EventTable

Clear out index.

destroy

public void destroy()

Description copied from interface: EventTable

Destroy index.

getNumberOfEvents

public java.lang.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.

Returns:

number of events

getNumKeys

public int getNumKeys()

Description copied from interface: EventTable

If the index retains events using some key-based organization this returns the number of keys, and may return null to indicate that either the number of keys is not available or costly to obtain.

The number returned can be an estimate and may not be accurate.

Returns:

number of events

getIndex

public java.lang.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

Returns:

index object

getProviderClass

public java.lang.Class getProviderClass()