com.espertech.esper.epl.spec

Class StreamSpecBase

java.lang.Object

com.espertech.esper.epl.spec.StreamSpecBase

All Implemented Interfaces:

MetaDefItem, Serializable

Direct Known Subclasses:

DBStatementStreamSpec, FilterStreamSpecCompiled, FilterStreamSpecRaw, MethodStreamSpec, NamedWindowConsumerStreamSpec, PatternStreamSpecCompiled, PatternStreamSpecRaw, TableQueryStreamSpec

public abstract class StreamSpecBase
extends Object
implements MetaDefItem, Serializable

Abstract base specification for a stream, consists simply of an optional stream name and a list of views on to of the stream.

Implementation classes for views and patterns add additional information defining the stream of events.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
StreamSpecBase() Default ctor.
StreamSpecBase(String optionalStreamName, ViewSpec[] viewSpecs, StreamSpecOptions streamSpecOptions) Ctor.

Method Summary

Modifier and Type	Method and Description
String	getOptionalStreamName() Returns the name assigned.
StreamSpecOptions	getOptions() Returns the options for the stream such as unidirectional, retain-union etc.
ViewSpec[]	getViewSpecs() Returns view definitions to use to construct views to derive data on stream.

Methods inherited from class java.lang.Object

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

Constructor Detail

StreamSpecBase

public StreamSpecBase(String optionalStreamName,
                      ViewSpec[] viewSpecs,
                      StreamSpecOptions streamSpecOptions)

Ctor.

Parameters:

optionalStreamName - - stream name, or null if none supplied

viewSpecs - - specifies what view to use to derive data

streamSpecOptions - - indicates additional options such as unidirectional stream or retain-union or retain-intersection

StreamSpecBase

public StreamSpecBase()

Default ctor.

Method Detail

getOptionalStreamName

public String getOptionalStreamName()

Returns the name assigned.

Returns:

stream name or null if not assigned

getViewSpecs

public ViewSpec[] getViewSpecs()

Returns view definitions to use to construct views to derive data on stream.

Returns:

view defs

getOptions

public StreamSpecOptions getOptions()

Returns the options for the stream such as unidirectional, retain-union etc.

Returns:

stream options