Package com.espertech.esper.view

View infrastructure concerned with view creation and destroy, cloning and hooking views trees into filtering.

See:
Description

Interface Summary

AsymetricDataWindowViewFactory	Marker interface for use with view factories that create data window views that are asymetric in posting insert and remove stream data: Data windows that post only a partial insert and remove stream as output when compared to the insert and remove stream received.
CloneableView	Views that can work under a group-by must be able to duplicate and are required to implement this interface.
DataWindowBatchingViewFactory	Tag interface for data window view factories that express a batch expiry policy.
DataWindowView	Tag interface for data window views.
DataWindowViewFactory	Marker interface for use with view factories that create data window views only.
DataWindowViewFactoryUniqueCandidate
DataWindowViewWithPrevious
DerivedValueView	Tag interface for derived-value views.
EventCollection	Interface that marks an event collection.
EventStream	A streams is a conduct for incoming events.
GroupableView
HistoricalEventViewable	Interface for views that poll data based on information from other streams.
InitializableView	Views that require initialization after view instantiation and after view hook-up with the parent view can impleeent this interface and get invoked to initialize.
StatementStopCallback	Callback to indicate that a statement has stopped.
StatementStopService	Provides statement resources with the means to register a callback and be informed when a statement stopped and resources for the statement must be release.
StoppableView
ValidatedView	Interface for views that require validation against stream event types.
View	The View interface provides a way for a stream, data provider, or another view, to notify an object of additions and deletions to its data set.
Viewable	The Viewable interface marks an object as supporting zero, one or more View instances.
ViewDataVisitable
ViewDataVisitableContainer
ViewDataVisitor
ViewDataVisitorContained
ViewFactory	Factory interface for a factory responsible for creating a View instance and for determining if an existing view meets requirements.
ViewResolutionService	Factory service for resolving view names and for creating view instances based on a view specification including view name and namespace.
ViewService	Service interface for creating views.

Class Summary

PropertyCheckHelper	Utility class for checking in a schema if fields exist and/or have an expected type.
StatementStopServiceImpl	Provides subscription list for statement stop callbacks.
ViewableDefaultImpl
ViewEnumHelper	Helper producing a repository of built-in views.
ViewFactoryChain	Holder for the logical chain of view factories.
ViewFactoryContext	Context calss for specific views within a statement.
ViewFactoryProxy
ViewFactorySupport	Abstract base class for view factories that do not make re-useable views and that do not share view resources with expression nodes.
ViewFactoryTimePeriodHelper
ViewProxy
ViewResolutionServiceImpl	Resolves view namespace and name to view factory class, using configuration.
ViewServiceCreateResult
ViewServiceHelper	Utility methods to deal with chains of views, and for merge/group-by views.
ViewServiceImpl	Implementation of the view evaluation service business interface.
ViewServiceProvider	Static factory for implementations of the ViewService interface.
ViewSupport	A helper class for View implementations that provides generic implementation for some of the methods.
ZeroDepthStreamIterable	Event stream implementation that does not keep any window by itself of the events coming into the stream, however is itself iterable and keeps the last event.
ZeroDepthStreamNoIterate	Event stream implementation that does not keep any window by itself of the events coming into the stream, without the possibility to iterate the last event.

Enum Summary

ViewEnum	Enum for all build-in views.
ViewFieldEnum	Enumerates the valid values for each view's public fields.

Exception Summary

ViewParameterException	Thrown to indicate a validation error in view parameterization.
ViewProcessingException	This exception is thrown to indicate a problem with a view expression.

Package com.espertech.esper.view Description

View infrastructure concerned with view creation and destroy, cloning and hooking views trees into filtering.