Package com.espertech.esper.common.client.soda

Class OrderByElement

java.lang.Object

com.espertech.esper.common.client.soda.OrderByElement

All Implemented Interfaces:

Serializable

public class OrderByElement
extends Object
implements Serializable

A single entry in an order-by clause consisting of an expression and order ascending or descending flag.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
OrderByElement()	Ctor.
OrderByElement(Expression expression, boolean descending)	Ctor.

Method Summary

Modifier and Type	Method	Description
Expression	getExpression()	Returns the order-by value expression.
boolean	isDescending()	Returns true for descending sorts for this column, false for ascending sort.
void	setDescending(boolean descending)	Set to true for descending sorts for this column, false for ascending sort.
void	setExpression(Expression expression)	Sets the order-by value expression.
void	toEPL(StringWriter writer)	Renders the clause in textual representation.

Methods inherited from class java.lang.Object

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

Constructor Details

OrderByElement

public OrderByElement()

Ctor.

OrderByElement

public OrderByElement(Expression expression,
 boolean descending)

Ctor.

Parameters:

expression - is the expression to order by

descending - true for descending sort, false for ascending sort

Method Details

getExpression

public Expression getExpression()

Returns the order-by value expression.

Returns:

expression

setExpression

public void setExpression(Expression expression)

Sets the order-by value expression.

Parameters:

expression - provides order-by values

isDescending

public boolean isDescending()

Returns true for descending sorts for this column, false for ascending sort.

Returns:

true for descending sort

setDescending

public void setDescending(boolean descending)

Set to true for descending sorts for this column, false for ascending sort.

Parameters:

descending - true for descending sort

toEPL

public void toEPL(StringWriter writer)

Renders the clause in textual representation.

Parameters:

writer - to output to