org.springframework.expression.spel.support

类 StandardOperatorOverloader

java.lang.Object

org.springframework.expression.spel.support.StandardOperatorOverloader

所有已实现的接口:

OperatorOverloader

public class StandardOperatorOverloader
extends Object
implements OperatorOverloader

从以下版本开始:

3.0

作者:

Juergen Hoeller

构造器概要

构造器

构造器和说明
StandardOperatorOverloader()

方法概要

限定符和类型	方法和说明
Object	operate(Operation operation, Object leftOperand, Object rightOperand) Execute the specified operation on two operands, returning a result.
boolean	overridesOperation(Operation operation, Object leftOperand, Object rightOperand) Return true if the operator overloader supports the specified operation between the two operands and so should be invoked to handle it.

从类继承的方法 java.lang.Object

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

构造器详细资料

StandardOperatorOverloader

public StandardOperatorOverloader()

方法详细资料

overridesOperation

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

从接口复制的说明: OperatorOverloader

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

指定者:

overridesOperation 在接口中 OperatorOverloader

参数:

operation - the operation to be performed

leftOperand - the left operand

rightOperand - the right operand

返回:

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

抛出:

EvaluationException - if there is a problem performing the operation

operate

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

从接口复制的说明: OperatorOverloader

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

指定者:

operate 在接口中 OperatorOverloader

参数:

operation - the operation to be performed

leftOperand - the left operand

rightOperand - the right operand

返回:

the result of performing the operation on the two operands

抛出:

EvaluationException - if there is a problem performing the operation