com.espertech.esper.client.soda

Class Stream

java.lang.Object

com.espertech.esper.client.soda.Stream

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

MethodInvocationStream, ProjectedStream, SQLStream

public abstract class Stream
extends Object
implements Serializable

An abstract base class for a named or unnamed stream.

Named streams provide an as-name for the stream, for example "select * from MyEvents(id=10) as StreamZero". Unnamed streams provide no as-name for the stream, for example "select * from MyEvents(id=10)".

See Also:

Serialized Form

Constructor Summary

Constructors

Modifier	Constructor and Description
	Stream() Ctor.
protected	Stream(String streamName) Ctor.

Method Summary

Modifier and Type	Method and Description
String	getStreamName() Returns the stream name.
void	setStreamName(String streamName) Sets the stream name.
void	toEPL(StringWriter writer, EPStatementFormatter formatter) Renders the clause in textual representation.
abstract void	toEPLStream(StringWriter writer, EPStatementFormatter formatter) Renders the stream in textual representation.
abstract void	toEPLStreamOptions(StringWriter writer) Renders the stream in textual representation any stream options, if present.
abstract void	toEPLStreamType(StringWriter writer) Renders the stream type under a non-complete textual representation for tool use

Methods inherited from class java.lang.Object

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

Constructor Detail

Stream

public Stream()

Ctor.

Stream

protected Stream(String streamName)

Ctor.

Parameters:

streamName - is null for unnamed streams, or a stream name for named streams.

Method Detail

toEPLStream

public abstract void toEPLStream(StringWriter writer,
                                 EPStatementFormatter formatter)

Renders the stream in textual representation.

Parameters:

writer - to output to

formatter - for newline-whitespace formatting

toEPLStreamOptions

public abstract void toEPLStreamOptions(StringWriter writer)

Renders the stream in textual representation any stream options, if present.

Parameters:

writer - to output to

toEPLStreamType

public abstract void toEPLStreamType(StringWriter writer)

Renders the stream type under a non-complete textual representation for tool use

Parameters:

writer - to output to

getStreamName

public String getStreamName()

Returns the stream name.

Returns:

name of stream, or null if unnamed.

setStreamName

public void setStreamName(String streamName)

Sets the stream name.

Parameters:

streamName - is the name of stream, or null if unnamed.

toEPL

public void toEPL(StringWriter writer,
                  EPStatementFormatter formatter)

Renders the clause in textual representation.

Parameters:

writer - to output to

formatter - for newline-whitespace formatting