/**************************************************************************************
* Copyright (C) 2008 EsperTech, Inc. All rights reserved. *
* http://esper.codehaus.org *
* http://www.espertech.com *
* ---------------------------------------------------------------------------------- *
* The software in this package is published under the terms of the GPL license *
* a copy of which has been included with this distribution in the license.txt file. *
**************************************************************************************/
package com.espertech.esper.client.soda;
import java.io.StringWriter;
/**
* A clause to delete from a named window based on a triggering event arriving and correlated to the named window events to be deleted.
*/
public class OnDeleteClause extends OnClause
{
private static final long serialVersionUID = 0L;
private String windowName;
private String optionalAsName;
/**
* Ctor.
*/
public OnDeleteClause() {
}
/**
* Creates an on-delete clause.
* @param windowName is the named window name
* @param optionalAsName is the optional as-provided name
* @return on-delete clause
*/
public static OnDeleteClause create(String windowName, String optionalAsName)
{
return new OnDeleteClause(windowName, optionalAsName);
}
/**
* Ctor.
* @param windowName is the named window name
* @param optionalAsName is the as-provided name of the named window
*/
public OnDeleteClause(String windowName, String optionalAsName)
{
this.windowName = windowName;
this.optionalAsName = optionalAsName;
}
/**
* Renders the clause in textual representation.
* @param writer to output to
*/
public void toEPL(StringWriter writer)
{
writer.write(windowName);
if (optionalAsName != null)
{
writer.write(" as ");
writer.write(optionalAsName);
}
}
/**
* Returns the name of the named window to delete from.
* @return named window name
*/
public String getWindowName()
{
return windowName;
}
/**
* Sets the name of the named window.
* @param windowName window name
*/
public void setWindowName(String windowName)
{
this.windowName = windowName;
}
/**
* Returns the as-provided name for the named window.
* @return name or null
*/
public String getOptionalAsName()
{
return optionalAsName;
}
/**
* Sets the as-provided for the named window.
* @param optionalAsName name to set for window
*/
public void setOptionalAsName(String optionalAsName)
{
this.optionalAsName = optionalAsName;
}
}