org.apache.tapestry5.services
Interface ValidationConstraintGenerator
- All Known Implementing Classes:
- MessagesConstraintGenerator, PrimitiveFieldConstraintGenerator, ValidateAnnotationConstraintGenerator, ValidationConstraintGeneratorImpl
@UsesOrderedConfiguration(value=ValidationConstraintGenerator.class)
public interface ValidationConstraintGenerator
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.ioc.Messages, java.util.Locale)
.
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 FieldValidator
s for the field
that edits the property.
- Parameters:
propertyType
- the type of the property for which constraints are neededannotationProvider
- 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:
FieldValidatorSource
Copyright © 2003-2012 The Apache Software Foundation.