Package org.apache.tapestry5.validator

Class MaxLength

java.lang.Object

org.apache.tapestry5.validator.AbstractValidator<Integer,String>

org.apache.tapestry5.validator.MaxLength

All Implemented Interfaces:

Validator<Integer,String>

public final class MaxLength
extends AbstractValidator<Integer,String>

Validates that a string value has not exceeded a maximum length.

Field Summary

Fields inherited from class org.apache.tapestry5.validator.AbstractValidator

javaScriptSupport

Constructor Summary

Constructors

Constructor	Description
MaxLength(JavaScriptSupport javaScriptSupport)

Method Summary

Modifier and Type	Method	Description
void	render(Field field, Integer constraintValue, MessageFormatter formatter, MarkupWriter writer, FormSupport formSupport)	Hook used by components to allow the validator to contribute additional attributes or (more often) client-side JavaScript (via the FormSupport.addValidation(Field, String, String, Object)).
void	validate(Field field, Integer constraintValue, MessageFormatter formatter, String value)	Invoked after the client-submitted value has been translated to check that the value conforms to expectations (often, in terms of minimum or maximum value).

Methods inherited from class org.apache.tapestry5.validator.AbstractValidator

getConstraintType, getMessageKey, getValueType, isRequired

Methods inherited from class java.lang.Object

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

Constructor Detail

MaxLength

public MaxLength(JavaScriptSupport javaScriptSupport)

Method Detail

validate

public void validate(Field field,
                     Integer constraintValue,
                     MessageFormatter formatter,
                     String value)
              throws ValidationException

Description copied from interface: Validator

Invoked after the client-submitted value has been translated to check that the value conforms to expectations (often, in terms of minimum or maximum value). If and only if the value is approved by all Validators is the value applied by the field.

Parameters:

field - the field for which a client submitted value is being validated

constraintValue - the value used to constrain

formatter - Validation messages, in the appropriate locale

value - the translated value supplied by the user

Throws:

ValidationException - if the value violates the constraint

render

public void render(Field field,
                   Integer constraintValue,
                   MessageFormatter formatter,
                   MarkupWriter writer,
                   FormSupport formSupport)

Description copied from interface: Validator

Hook used by components to allow the validator to contribute additional attributes or (more often) client-side JavaScript (via the FormSupport.addValidation(Field, String, String, Object)).

Parameters:

field - the field which is currently being rendered

constraintValue - the value used to constrain input

formatter - validation message, in the appropriate locale

writer - markup writer, allowing additional attributes to be written into the active element

formSupport - used to add JavaScript