org.apache.tapestry.form.validator
Class MinLength

java.lang.Object
  org.apache.tapestry.form.validator.BaseValidator
      org.apache.tapestry.form.validator.MinLength

All Implemented Interfaces:

FormComponentContributor, Validator

public class MinLength
extends BaseValidator

Validates that the value, a string, is of a minimum length.

Since:

4.0

Author:

Howard Lewis Ship

Constructor Summary

MinLength()

MinLength(String initializer)

Method Summary

protected String	buildMessage(ValidationMessages messages, IFormComponent field)
int	getMinLength()
void	renderContribution(IMarkupWriter writer, IRequestCycle cycle, FormComponentContributorContext context, IFormComponent field) Does nothing.
void	setMinLength(int minLength)
void	validate(IFormComponent field, ValidationMessages messages, Object object) Invoked to validate input for the field.

Methods inherited from class org.apache.tapestry.form.validator.BaseValidator

accumulateProfileProperty, accumulateProperty, getAcceptsNull, getFieldTranslator, getMessage, isRequired, setMessage

Methods inherited from class java.lang.Object

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

Constructor Detail

MinLength

public MinLength()

MinLength

public MinLength(String initializer)

Method Detail

setMinLength

public void setMinLength(int minLength)

getMinLength

public int getMinLength()

validate

public void validate(IFormComponent field,
                     ValidationMessages messages,
                     Object object)
              throws ValidatorException

Description copied from interface: Validator

Invoked to validate input for the field. A Translator will have already converted the submitted user input string into an object.

Parameters:

field - the form element component being validated, often used to determine the user presentable name for the field, used in error messages.

messages - access to the pre-defined validation messages, in the appropriate locale

object - the client-side representation of the field's data. May be null if the client did not provide a value for the field (most Validators should check for null and perform no check if null).

Throws:

ValidatorException - if the object violates the constraint represented by this Validator.

buildMessage

protected String buildMessage(ValidationMessages messages,
                              IFormComponent field)

renderContribution

public void renderContribution(IMarkupWriter writer,
                               IRequestCycle cycle,
                               FormComponentContributorContext context,
                               IFormComponent field)

Description copied from class: BaseValidator

Does nothing.

Specified by:

renderContribution in interface FormComponentContributor

Overrides:

renderContribution in class BaseValidator

Parameters:

writer - allows contributor to write additional attributes into the component's tag

cycle - for accessing request information

context - utilities for genering messages and client-side validation

field - the field for which contributions are being rendered