org.springframework.expression.spel.support

Class StandardOperatorOverloader

java.lang.Object

org.springframework.expression.spel.support.StandardOperatorOverloader

All Implemented Interfaces:

OperatorOverloader

public class StandardOperatorOverloader
extends java.lang.Object
implements OperatorOverloader

Since:

3.0

Author:

Juergen Hoeller

Constructor Summary

Constructors

Constructor and Description
StandardOperatorOverloader()

Method Summary

Modifier and Type	Method and Description
java.lang.Object	operate(Operation operation, java.lang.Object leftOperand, java.lang.Object rightOperand) Execute the specified operation on two operands, returning a result.
boolean	overridesOperation(Operation operation, java.lang.Object leftOperand, java.lang.Object rightOperand) Return true if the operator overloader supports the specified operation between the two operands and so should be invoked to handle it.

Methods inherited from class java.lang.Object

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

Constructor Detail

StandardOperatorOverloader

public StandardOperatorOverloader()

Method Detail

overridesOperation

public boolean overridesOperation(Operation operation,
                                  java.lang.Object leftOperand,
                                  java.lang.Object rightOperand)
                           throws EvaluationException

Description copied from interface: OperatorOverloader

Return true if the operator overloader supports the specified operation between the two operands and so should be invoked to handle it.

Specified by:

overridesOperation in interface OperatorOverloader

Parameters:

operation - the operation to be performed

leftOperand - the left operand

rightOperand - the right operand

Returns:

true if the OperatorOverloader supports the specified operation between the two operands

Throws:

EvaluationException - if there is a problem performing the operation

operate

public java.lang.Object operate(Operation operation,
                                java.lang.Object leftOperand,
                                java.lang.Object rightOperand)
                         throws EvaluationException

Description copied from interface: OperatorOverloader

Execute the specified operation on two operands, returning a result. See Operation for supported operations.

Specified by:

operate in interface OperatorOverloader

Parameters:

operation - the operation to be performed

leftOperand - the left operand

rightOperand - the right operand

Returns:

the result of performing the operation on the two operands

Throws:

EvaluationException - if there is a problem performing the operation