Package org.apache.tapestry5.services
Interface ValidationConstraintGenerator
- All Known Implementing Classes:
MessagesConstraintGenerator
,PrimitiveFieldConstraintGenerator
,ValidateAnnotationConstraintGenerator
,ValidationConstraintGeneratorImpl
@UsesOrderedConfiguration(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.commons.Messages, java.util.Locale)
.-
Method Summary
Modifier and TypeMethodDescriptionbuildConstraints
(Class<?> propertyType, AnnotationProvider annotationProvider) For a given property, identify all the approprite validation constraints.
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Method Details
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buildConstraints
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 avalidate specification
. These will ultimately be used to createFieldValidator
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:
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