Spring Framework

org.springframework.expression.spel.ast
Class OperatorInstanceof

java.lang.Object
  extended by org.springframework.expression.spel.ast.SpelNodeImpl
      extended by org.springframework.expression.spel.ast.Operator
          extended by org.springframework.expression.spel.ast.OperatorInstanceof
All Implemented Interfaces:
SpelNode

public class OperatorInstanceof
extends Operator

The operator 'instanceof' checks if an object is of the class specified in the right hand operand, in the same way that instanceof does in Java.

Since:
3.0
Author:
Andy Clement

Field Summary
 
Fields inherited from class org.springframework.expression.spel.ast.SpelNodeImpl
children, pos
 
Constructor Summary
OperatorInstanceof(int pos, SpelNodeImpl... operands)
           
 
Method Summary
 BooleanTypedValue getValueInternal(ExpressionState state)
          Compare the left operand to see it is an instance of the type specified as the right operand.
 
Methods inherited from class org.springframework.expression.spel.ast.Operator
getLeftOperand, getOperatorName, getRightOperand, toStringAST
 
Methods inherited from class org.springframework.expression.spel.ast.SpelNodeImpl
getChild, getChildCount, getEndPosition, getObjectClass, getPreviousChild, getStartPosition, getTypedValue, getValue, getValue, isWritable, nextChildIs, setValue
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

OperatorInstanceof

public OperatorInstanceof(int pos,
                          SpelNodeImpl... operands)
Method Detail

getValueInternal

public BooleanTypedValue getValueInternal(ExpressionState state)
                                   throws EvaluationException
Compare the left operand to see it is an instance of the type specified as the right operand. The right operand must be a class.

Specified by:
getValueInternal in class SpelNodeImpl
Parameters:
state - the expression state
Returns:
true if the left operand is an instanceof of the right operand, otherwise false
Throws:
EvaluationException - if there is a problem evaluating the expression

Spring Framework