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Java Source Code / Java Documentation » Library » Tapestry » org.apache.tapestry.services

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Java Document (Java Doc)

org.apache.tapestry.services .ValidationConstraintGenerator

All known Subclasses:   org.apache.tapestry.internal.beaneditor .PrimitiveFieldConstraintGenerator,  org.apache.tapestry.internal.services .ValidationConstraintGeneratorImpl,  org.apache.tapestry.internal.beaneditor .ValidateAnnotationConstraintGenerator,
ValidationConstraintGenerator
public interface ValidationConstraintGenerator (Code)
Invoked to generate a list of validation constraint strings for a property. This typically involves scanning the property for annotations or naming conventions that confer the desired validation. The constraint strings are ultimately handed to FieldValidatorSource.createValidator(org.apache.tapestry.FieldStringStringStringorg.apache.tapestry.ioc.Messagesjava.util.Locale) .

Method Summary
List<String> buildConstraints(Class propertyType, AnnotationProvider annotationProvider)
     For a given property, identify all the approprite validation constraints.

Method Detail
buildConstraints
List<String> buildConstraints(Class propertyType, AnnotationProvider annotationProvider)(Code)
For a given property, identify all the approprite validation constraints. Each returned value is the name of a validator (i.e., "required") or a validator name and configuration (i.e., "minlength=5"). These contraints are exactly the individual terms in a FieldValidatorSource.createValidators(org.apache.tapestry.FieldString) validate specification . These will ultimately be used to create FieldValidator s for the field that edits the property.
Parameters:
  propertyType - the type of the property for which constraints are needed
Parameters:
  annotationProvider - provides access to any annotations concerning the property (for implementationsthat are based on analysis of property annotations) a list of constraints
See Also:   FieldValidatorSource

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