Top Description Fields Constructors Methods
org.springframework.expression.spel.support

public Class StandardOperatorOverloader

extends Object
implements OperatorOverloader
Class Inheritance
All Implemented Interfaces
org.springframework.expression.OperatorOverloader
Imports
org.springframework.expression.EvaluationException, .Operation, .OperatorOverloader, org.springframework.lang.Nullable
Standard implementation of OperatorOverloader.
Author
Juergen Hoeller
Since
3.0

Field Summary

Modifier and TypeField and Description
pack-priv static final StandardOperatorOverloader
INSTANCE

Constructor Summary

AccessConstructor and Description
public
StandardOperatorOverloader()

Method Summary

Modifier and TypeMethod and Description
public Object
operate(Operation
the operation to be performed
operation, Object
the left operand
leftOperand, Object
the right operand
rightOperand)

Implements org.springframework.expression.OperatorOverloader.operate.

Perform the specified operation on the two operands, returning a result.

public boolean
overridesOperation(Operation
the operation to be performed
operation, Object
the left operand
leftOperand, Object
the right operand
rightOperand)

Implements org.springframework.expression.OperatorOverloader.overridesOperation.

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

Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

INSTANCEback to summary
pack-priv static final StandardOperatorOverloader INSTANCE

Constructor Detail

StandardOperatorOverloaderback to summary
public StandardOperatorOverloader()

Method Detail

operateback to summary
public Object operate(Operation operation, Object leftOperand, Object rightOperand) throws EvaluationException

Implements org.springframework.expression.OperatorOverloader.operate.

Doc from org.springframework.expression.OperatorOverloader.operate.

Perform the specified operation on the two operands, returning a result.

See Operation for supported operations.

Parameters
operation:Operation

the operation to be performed

leftOperand:Object

the left operand

rightOperand:Object

the right operand

Returns:Object

the result of performing the operation on the two operands

Annotations
@Override
Exceptions
EvaluationException:
if there is a problem performing the operation
overridesOperationback to summary
public boolean overridesOperation(Operation operation, Object leftOperand, Object rightOperand) throws EvaluationException

Implements org.springframework.expression.OperatorOverloader.overridesOperation.

Doc from org.springframework.expression.OperatorOverloader.overridesOperation.

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

Parameters
operation:Operation

the operation to be performed

leftOperand:Object

the left operand

rightOperand:Object

the right operand

Returns:boolean

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

Annotations
@Override
Exceptions
EvaluationException:
if there is a problem performing the operation