org.iscreen.mvel.validators
Class ExpressionValidator

java.lang.Object
  org.iscreen.BaseValidator
      org.iscreen.mvel.validators.ExpressionValidator

All Implemented Interfaces:

Validator

public class ExpressionValidator
extends BaseValidator

The ExpressionValidator uses an MVEL expression to check an object (the MVEL root). If the expression returns false, then it's considered a failure.

Author:

Shellman, Dan

Field Summary

protected java.lang.String

expression

Fields inherited from class org.iscreen.BaseValidator

defaultFailure

Constructor Summary

ExpressionValidator()
Default constructor.

Method Summary

java.lang.String	getExpression()
void	setExpression(java.lang.String exp)
void	validate(ValidatorContext context, java.lang.Object beanToValidate) This is the method that's called to validate the "bean-to-validate." Use the passed in ValidatorContext to report validation failures, etc.

Methods inherited from class org.iscreen.BaseValidator

constructBeanToValidate, getDefaultFailure, getStringValue, getValue, setDefaultFailure

Methods inherited from class java.lang.Object

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

Field Detail

expression

protected java.lang.String expression

Constructor Detail

ExpressionValidator

public ExpressionValidator()

Default constructor.

Method Detail

validate

public void validate(ValidatorContext context,
                     java.lang.Object beanToValidate)

Description copied from interface: Validator

This is the method that's called to validate the "bean-to-validate." Use the passed in ValidatorContext to report validation failures, etc. The passed-in "bean-to-validate" is the same instance returned from the call to constructBeanToValidate(), but with all of the appropriate properties set (based upon the configured mapping).

Parameters:

context - The ValidatorContext, which is used to report failures.

beanToValidate - The JavaBean to validate.

setExpression

public void setExpression(java.lang.String exp)

getExpression

public java.lang.String getExpression()