Interface ValidationConstraintGenerator

All Known Implementing Classes:
MessagesConstraintGenerator, PrimitiveFieldConstraintGenerator, ValidateAnnotationConstraintGenerator, ValidationConstraintGeneratorImpl

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.tapestry5.Field, String, String, String, org.apache.tapestry5.commons.Messages, java.util.Locale).
  • Method Summary

    Modifier and Type
    Method
    Description
    buildConstraints(Class<?> propertyType, AnnotationProvider annotationProvider)
    For a given property, identify all the approprite validation constraints.
  • Method Details

    • buildConstraints

      List<String> buildConstraints(Class<?> propertyType, AnnotationProvider annotationProvider)
      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 validate specification. These will ultimately be used to create FieldValidators for the field that edits the property.
      Parameters:
      propertyType - the type of the property for which constraints are needed
      annotationProvider - provides access to any annotations concerning the property (for implementations that are based on analysis of property annotations)
      Returns:
      a list of constraints
      See Also: