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

java.lang.Object
  com.espertech.esper.epl.join.table.UnindexedEventTable
      com.espertech.esper.epl.join.table.UnindexedEventTableImpl

All Implemented Interfaces:

EventTable, java.lang.Iterable<EventBean>

public class UnindexedEventTableImpl
extends UnindexedEventTable

Simple table of events without an index.

Constructor Summary

UnindexedEventTableImpl(int streamNum)
Ctor.

Method Summary

void	add(EventBean event) Add event to table.
void	add(EventBean[] events) Add events to table.
void	addRemove(EventBean[] newData, EventBean[] oldData) Add and remove events from table.
void	clear() Clear out index.
void	destroy() Destroy index.
java.util.Set<EventBean>	getEventSet() Returns events in table.
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.
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.
void	remove(EventBean event) Remove event from table.
void	remove(EventBean[] events) Remove events from table.

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

getNumKeys, getOrganization, toQueryPlan, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

UnindexedEventTableImpl

public UnindexedEventTableImpl(int streamNum)

Ctor.

Parameters:

streamNum - is the indexed stream's number

Method Detail

clear

public void clear()

Description copied from interface: EventTable

Clear out index.

destroy

public void destroy()

Description copied from interface: EventTable

Destroy index.

addRemove

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

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.

Parameters:

newData - to add

oldData - to remove

add

public void add(EventBean[] events)

Description copied from interface: EventTable

Add events to table.

Parameters:

events - to add

remove

public void remove(EventBean[] events)

Description copied from interface: EventTable

Remove events from table.

Parameters:

events - to remove

add

public void add(EventBean event)

Description copied from interface: EventTable

Add event to table.

Parameters:

event - to add

remove

public void remove(EventBean event)

Description copied from interface: EventTable

Remove event from table.

Parameters:

event - 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

getEventSet

public java.util.Set<EventBean> getEventSet()

Returns events in table.

Specified by:

getEventSet in class UnindexedEventTable

Returns:

all events

iterator

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

Description copied from interface: EventTable

Returns an iterator over events in the table.

Returns:

table iterator

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

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()