Class CompositeFieldValidator
- java.lang.Object
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- org.apache.tapestry5.internal.services.CompositeFieldValidator
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- All Implemented Interfaces:
FieldValidator
public final class CompositeFieldValidator extends java.lang.Object implements FieldValidator
Aggregates together a number of field validator instances as a single unit.
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Constructor Summary
Constructors Constructor Description CompositeFieldValidator(java.util.List<FieldValidator> validators)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description booleanisRequired()Returns true if any underlyingValidatorreturns true fromValidator.isRequired().voidrender(MarkupWriter writer)voidvalidate(java.lang.Object value)Invoked after the client-submitted value has beentranslatedto check that the value conforms to expectations (often, in terms of minimum or maximum value).
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Constructor Detail
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CompositeFieldValidator
public CompositeFieldValidator(java.util.List<FieldValidator> validators)
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Method Detail
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validate
public void validate(java.lang.Object value) throws ValidationException
Description copied from interface:FieldValidatorInvoked after the client-submitted value has beentranslatedto 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.- Specified by:
validatein interfaceFieldValidator- Parameters:
value- the translated value supplied by the user- Throws:
ValidationException- if the value violates the constraint
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render
public void render(MarkupWriter writer)
Description copied from interface:FieldValidatorInvokesValidator.render(Field, Object, org.apache.tapestry5.ioc.MessageFormatter, MarkupWriter, org.apache.tapestry5.services.FormSupport). This is called at a point "inside" the tag, so that additional attributes may be added. In many cases, the underlyingValidatormay write client-side JavaScript to enforce the constraint as well.- Specified by:
renderin interfaceFieldValidator- Parameters:
writer- markup writer to direct output to.- See Also:
MarkupWriter.attributes(Object[])
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isRequired
public boolean isRequired()
Description copied from interface:FieldValidatorReturns true if any underlyingValidatorreturns true fromValidator.isRequired().- Specified by:
isRequiredin interfaceFieldValidator- Returns:
- true if the field is required (a non-blank value is expected)
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