com.espertech.esper.epl.virtualdw

Class VirtualDWViewImpl

java.lang.Object

com.espertech.esper.view.ViewSupport

com.espertech.esper.epl.virtualdw.VirtualDWViewImpl

All Implemented Interfaces:

VirtualDWView, EventCollection, View, Viewable, Iterable<EventBean>

public class VirtualDWViewImpl
extends ViewSupport
implements VirtualDWView

Field Summary

Fields inherited from class com.espertech.esper.view.ViewSupport

EMPTY_VIEW_ARRAY, parent

Constructor Summary

Constructors

Constructor and Description
VirtualDWViewImpl(VirtualDataWindow dataExternal, EventType eventType, String namedWindowName)

Method Summary

Modifier and Type	Method and Description
void	destroy()
EventType	getEventType() Provides metadata information about the type of object the event collection contains.
Collection<EventBean>	getFireAndForgetData(EventTable eventTable, Object[] keyValues, RangeIndexLookupValue[] rangeValues, Annotation[] annotations)
Pair<IndexMultiKey,EventTable>	getFireAndForgetDesc(Set<String> keysAvailable, Set<String> rangesAvailable)
EventTable	getJoinIndexTable(QueryPlanIndexItem queryPlanIndexItem)
JoinExecTableLookupStrategy	getJoinLookupStrategy(String accessedByStmtName, int accessedByStmtId, Annotation[] accessedByStmtAnnotations, EventTable[] eventTables, TableLookupKeyDesc keyDescriptor, int lookupStreamNum)
SubordTableLookupStrategy	getSubordinateLookupStrategy(String accessedByStatementName, int accessedByStatementId, Annotation[] accessedByStmtAnnotations, EventType[] outerStreamTypes, List<SubordPropHashKey> hashKeys, CoercionDesc hashKeyCoercionTypes, List<SubordPropRangeKey> rangeKeys, CoercionDesc rangeKeyCoercionTypes, boolean nwOnTrigger, EventTable eventTable, SubordPropPlan joinDesc, boolean forceTableScan)
Pair<IndexMultiKey,EventTable>	getSubordinateQueryDesc(boolean unique, List<IndexedPropDesc> hashedProps, List<IndexedPropDesc> btreeProps)
VirtualDataWindow	getVirtualDataWindow()
void	handleStartIndex(CreateIndexDesc spec)
void	handleStopIndex(CreateIndexDesc spec)
void	handleStopWindow()
Iterator<EventBean>	iterator() Allows iteration through all elements in this event collection.
void	update(EventBean[] newData, EventBean[] oldData) Notify that data has been added or removed from the Viewable parent.

Methods inherited from class com.espertech.esper.view.ViewSupport

addView, addView, dumpChildViews, dumpUpdateParams, dumpUpdateParams, findDescendent, findViewIndex, getParent, getViews, hasViews, removeAllViews, removeView, removeView, setParent, updateChildren, updateChildren

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

VirtualDWViewImpl

public VirtualDWViewImpl(VirtualDataWindow dataExternal,
                         EventType eventType,
                         String namedWindowName)

Method Detail

getVirtualDataWindow

public VirtualDataWindow getVirtualDataWindow()

Specified by:

getVirtualDataWindow in interface VirtualDWView

getSubordinateQueryDesc

public Pair<IndexMultiKey,EventTable> getSubordinateQueryDesc(boolean unique,
                                                              List<IndexedPropDesc> hashedProps,
                                                              List<IndexedPropDesc> btreeProps)

Specified by:

getSubordinateQueryDesc in interface VirtualDWView

getSubordinateLookupStrategy

public SubordTableLookupStrategy getSubordinateLookupStrategy(String accessedByStatementName,
                                                              int accessedByStatementId,
                                                              Annotation[] accessedByStmtAnnotations,
                                                              EventType[] outerStreamTypes,
                                                              List<SubordPropHashKey> hashKeys,
                                                              CoercionDesc hashKeyCoercionTypes,
                                                              List<SubordPropRangeKey> rangeKeys,
                                                              CoercionDesc rangeKeyCoercionTypes,
                                                              boolean nwOnTrigger,
                                                              EventTable eventTable,
                                                              SubordPropPlan joinDesc,
                                                              boolean forceTableScan)

Specified by:

getSubordinateLookupStrategy in interface VirtualDWView

getJoinIndexTable

public EventTable getJoinIndexTable(QueryPlanIndexItem queryPlanIndexItem)

Specified by:

getJoinIndexTable in interface VirtualDWView

getJoinLookupStrategy

public JoinExecTableLookupStrategy getJoinLookupStrategy(String accessedByStmtName,
                                                         int accessedByStmtId,
                                                         Annotation[] accessedByStmtAnnotations,
                                                         EventTable[] eventTables,
                                                         TableLookupKeyDesc keyDescriptor,
                                                         int lookupStreamNum)

Specified by:

getJoinLookupStrategy in interface VirtualDWView

getFireAndForgetDesc

public Pair<IndexMultiKey,EventTable> getFireAndForgetDesc(Set<String> keysAvailable,
                                                           Set<String> rangesAvailable)

Specified by:

getFireAndForgetDesc in interface VirtualDWView

getFireAndForgetData

public Collection<EventBean> getFireAndForgetData(EventTable eventTable,
                                                  Object[] keyValues,
                                                  RangeIndexLookupValue[] rangeValues,
                                                  Annotation[] annotations)

Specified by:

getFireAndForgetData in interface VirtualDWView

update

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

Description copied from interface: View

Notify that data has been added or removed from the Viewable parent. The last object in the newData array of objects would be the newest object added to the parent view. The first object of the oldData array of objects would be the oldest object removed from the parent view.

If the call to update contains new (inserted) data, then the first argument will be a non-empty list and the second will be empty. Similarly, if the call is a notification of deleted data, then the first argument will be empty and the second will be non-empty. Either the newData or oldData will be non-null. This method won't be called with both arguments being null, but either one could be null. The same is true for zero-length arrays. Either newData or oldData will be non-empty. If both are non-empty, then the update is a modification notification.

When update() is called on a view by the parent object, the data in newData will be in the collection of the parent, and its data structures will be arranged to reflect that. The data in oldData will not be in the parent's data structures, and any access to the parent will indicate that that data is no longer there.

Specified by:

update in interface View

Parameters:

newData - is the new data that has been added to the parent view

oldData - is the old data that has been removed from the parent view

getEventType

public EventType getEventType()

Description copied from interface: EventCollection

Provides metadata information about the type of object the event collection contains.

Specified by:

getEventType in interface EventCollection

Returns:

metadata for the objects in the collection

destroy

public void destroy()

Specified by:

destroy in interface VirtualDWView

iterator

public Iterator<EventBean> iterator()

Description copied from interface: EventCollection

Allows iteration through all elements in this event collection. The iterator will return the elements in the collection in their natural order, or, if there is no natural ordering, in some unpredictable order.

Specified by:

iterator in interface EventCollection

Specified by:

iterator in interface Iterable<EventBean>

Returns:

an iterator which will go through all current elements in the collection.

handleStartIndex

public void handleStartIndex(CreateIndexDesc spec)

Specified by:

handleStartIndex in interface VirtualDWView

handleStopIndex

public void handleStopIndex(CreateIndexDesc spec)

Specified by:

handleStopIndex in interface VirtualDWView

handleStopWindow

public void handleStopWindow()

Specified by:

handleStopWindow in interface VirtualDWView