org.apache.tapestry5.validator
Class MinLength

java.lang.Object
  extended by org.apache.tapestry5.validator.AbstractValidator<Integer,String>
      extended by org.apache.tapestry5.validator.MinLength
All Implemented Interfaces:
Validator<Integer,String>

public final class MinLength
extends AbstractValidator<Integer,String>

Validates that a string value has a minimum length.


Constructor Summary
MinLength()
           
 
Method Summary
 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

MinLength

public MinLength()
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


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