Package org.springframework.expression.spel.support

Class StandardOperatorOverloader

java.lang.Object

org.springframework.expression.spel.support.StandardOperatorOverloader

All Implemented Interfaces:

OperatorOverloader

public class StandardOperatorOverloader
extends Object
implements OperatorOverloader

Standard implementation of OperatorOverloader.

Since:

3.0

Author:

Juergen Hoeller

Constructor Summary

Constructors

Constructor	Description
StandardOperatorOverloader()

Method Summary

Modifier and Type	Method	Description
Object	operate(Operation operation, Object leftOperand, Object rightOperand)	Perform the specified operation on the two operands, returning a result.
boolean	overridesOperation(Operation operation, Object leftOperand, Object rightOperand)	Return true if this operator overloader supports the specified operation on the two operands and 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 Details

StandardOperatorOverloader

public StandardOperatorOverloader()

Method Details

overridesOperation

public boolean overridesOperation(Operation operation,
 @Nullable
 Object leftOperand,
 @Nullable
 Object rightOperand)
                           throws EvaluationException

Description copied from interface: OperatorOverloader

Return true if this operator overloader supports the specified operation on the two operands and 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 this OperatorOverloader supports the specified operation between the two operands

Throws:

EvaluationException - if there is a problem performing the operation

operate

public Object operate(Operation operation,
 @Nullable
 Object leftOperand,
 @Nullable
 Object rightOperand)
               throws EvaluationException

Description copied from interface: OperatorOverloader

Perform the specified operation on the 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