com.espertech.esper.client.soda

Class OnMergeClause

java.lang.Object

com.espertech.esper.client.soda.OnClause

com.espertech.esper.client.soda.OnMergeClause

All Implemented Interfaces:

Serializable

public class OnMergeClause
extends OnClause

A clause to insert, update or delete to/from a named window based on a triggering event arriving and correlated to the named window events to be updated.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
OnMergeClause() Ctor.
OnMergeClause(String windowName, String optionalAsName, List<OnMergeMatchItem> matchItems) Ctor.

Method Summary

Modifier and Type	Method and Description
OnMergeClause	addAction(OnMergeMatchItem action) Add a new action to the list of actions.
static OnMergeClause	create(String windowName, String optionalAsName, List<OnMergeMatchItem> matchItems) Creates an on-update clause.
List<OnMergeMatchItem>	getMatchItems() Returns all actions.
String	getOptionalAsName() Returns the as-provided name for the named window.
String	getWindowName() Returns the name of the named window to update.
void	setMatchItems(List<OnMergeMatchItem> matchItems) Sets all actions.
void	setOptionalAsName(String optionalAsName) Sets the as-provided for the named window.
void	setWindowName(String windowName) Sets the name of the named window.
void	toEPL(StringWriter writer, Expression optionalWhereClause, EPStatementFormatter formatter) Renders the clause in textual representation.

Methods inherited from class com.espertech.esper.client.soda.OnClause

createOnDelete, createOnInsertSplitStream, createOnSelect, createOnSet, createOnUpdate

Methods inherited from class java.lang.Object

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

Constructor Detail

OnMergeClause

public OnMergeClause()

Ctor.

OnMergeClause

public OnMergeClause(String windowName,
                     String optionalAsName,
                     List<OnMergeMatchItem> matchItems)

Ctor.

Parameters:

windowName - is the named window name

optionalAsName - is the as-provided name of the named window

matchItems - is the matched and non-matched action items

Method Detail

create

public static OnMergeClause create(String windowName,
                                   String optionalAsName,
                                   List<OnMergeMatchItem> matchItems)

Creates an on-update clause.

Parameters:

windowName - is the named window name

optionalAsName - is the optional as-provided name

matchItems - is the matched and non-matched action items

Returns:

on-update clause without assignments

toEPL

public void toEPL(StringWriter writer,
                  Expression optionalWhereClause,
                  EPStatementFormatter formatter)

Renders the clause in textual representation.

Parameters:

writer - to output to

optionalWhereClause - where clause if present, or null

formatter - for newline-whitespace formatting

getWindowName

public String getWindowName()

Returns the name of the named window to update.

Returns:

named window name

setWindowName

public void setWindowName(String windowName)

Sets the name of the named window.

Parameters:

windowName - window name

getOptionalAsName

public String getOptionalAsName()

Returns the as-provided name for the named window.

Returns:

name or null

setOptionalAsName

public void setOptionalAsName(String optionalAsName)

Sets the as-provided for the named window.

Parameters:

optionalAsName - name to set for window

addAction

public OnMergeClause addAction(OnMergeMatchItem action)

Add a new action to the list of actions.

Parameters:

action - to add

Returns:

clause

getMatchItems

public List<OnMergeMatchItem> getMatchItems()

Returns all actions.

Returns:

actions

setMatchItems

public void setMatchItems(List<OnMergeMatchItem> matchItems)

Sets all actions.

Parameters:

matchItems - to set