com.espertech.esper.client.soda

Class OnSetClause

java.lang.Object

com.espertech.esper.client.soda.OnClause

com.espertech.esper.client.soda.OnSetClause

All Implemented Interfaces:

Serializable

public class OnSetClause
extends OnClause

A clause to assign new values to variables based on a triggering event arriving.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
OnSetClause() Ctor.

Method Summary

Modifier and Type	Method and Description
OnSetClause	addAssignment(Expression expression) Adds a variable to set to the clause.
static OnSetClause	create(Expression expression) Creates a new on-set clause for setting variables, and adds a variable to set.
List<Assignment>	getAssignments() Returns the list of variable assignments.
void	setAssignments(List<Assignment> assignments) Sets a list of variable assignments.
void	toEPL(StringWriter writer, EPStatementFormatter formatter) Renders the clause in EPL.

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

OnSetClause

public OnSetClause()

Ctor.

Method Detail

create

public static OnSetClause create(Expression expression)

Creates a new on-set clause for setting variables, and adds a variable to set.

Parameters:

expression - is the assignment expression providing the new variable value

Returns:

on-set clause

addAssignment

public OnSetClause addAssignment(Expression expression)

Adds a variable to set to the clause.

Parameters:

expression - expression providing the new variable value

Returns:

clause

getAssignments

public List<Assignment> getAssignments()

Returns the list of variable assignments.

Returns:

pair of variable name and expression

setAssignments

public void setAssignments(List<Assignment> assignments)

Sets a list of variable assignments.

Parameters:

assignments - list of pairs of variable name and expression

toEPL

public void toEPL(StringWriter writer,
                  EPStatementFormatter formatter)

Renders the clause in EPL.

Parameters:

writer - to output to

formatter - for newline-whitespace formatting