net.esper.client.soda
Class ArithmaticExpression

java.lang.Object
  net.esper.client.soda.ExpressionBase
      net.esper.client.soda.ArithmaticExpression

All Implemented Interfaces:

Serializable, Expression

public class ArithmaticExpression
extends ExpressionBase

Arithmatic expression for addition, subtraction, multiplication, division and modulo.

See Also:

Serialized Form

Constructor Summary

ArithmaticExpression(Expression left, String operator, Expression right)
Ctor.

ArithmaticExpression(String operator)
Ctor.

Method Summary

ArithmaticExpression	add(Expression expression) Add an expression to include in the computation.
ArithmaticExpression	add(Object object) Add a constant to include in the computation.
ArithmaticExpression	add(String propertyName) Add a property to include in the computation.
String	getOperator() Returns the arithmatic operator.
void	toEQL(StringWriter writer) Renders the expressions and all it's child expression, in full tree depth, as a string in language syntax.

Methods inherited from class net.esper.client.soda.ExpressionBase

addChild, getChildren

Methods inherited from class java.lang.Object

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

Constructor Detail

ArithmaticExpression

public ArithmaticExpression(String operator)

Ctor.

Parameters:

operator - can be any of '-', '+', '*', '/' or '%' (modulo).

ArithmaticExpression

public ArithmaticExpression(Expression left,
                            String operator,
                            Expression right)

Ctor.

Parameters:

left - the left hand side

operator - can be any of '-', '+', '*', '/' or '%' (modulo).

right - the right hand side

Method Detail

getOperator

public String getOperator()

Returns the arithmatic operator.

Returns:

operator

add

public ArithmaticExpression add(Object object)

Add a constant to include in the computation.

Parameters:

object - constant to add

Returns:

expression

add

public ArithmaticExpression add(Expression expression)

Add an expression to include in the computation.

Parameters:

expression - to add

Returns:

expression

add

public ArithmaticExpression add(String propertyName)

Add a property to include in the computation.

Parameters:

propertyName - is the name of the property

Returns:

expression

toEQL

public void toEQL(StringWriter writer)

Description copied from interface: Expression

Renders the expressions and all it's child expression, in full tree depth, as a string in language syntax.

Parameters:

writer - is the output to use