javax.validation.metadata.BeanDescriptor Maven / Gradle / Ivy
/*
* Bean Validation API
*
* License: Apache License, Version 2.0
* See the license.txt file in the root directory or .
*/
package javax.validation.metadata;
import java.util.Set;
import javax.validation.Valid;
/**
* Describes a constrained Java Bean and the constraints associated to it. All
* objects returned by the methods of this descriptor (and associated objects
* including {@link ConstraintDescriptor}s) are immutable.
*
* @author Emmanuel Bernard
* @author Gunnar Morling
*/
public interface BeanDescriptor extends ElementDescriptor {
/**
* Returns {@code true} if the bean involves validation:
*
* - a constraint is hosted on the bean itself
* - a constraint is hosted on one of the bean properties
* - or a bean property is marked for cascaded validation ({@link Valid})
*
*
* Constrained methods and constructors are ignored.
*
* @return {@code true} if the bean involves validation, {@code false} otherwise
*/
boolean isBeanConstrained();
/**
* Returns the property descriptor for a given property.
*
* Returns {@code null} if the property does not exist or has no
* constraint nor is marked as cascaded (see {@link #getConstrainedProperties()})
* Properties of super types are considered.
*
* @param propertyName property evaluated
* @return the property descriptor for a given property
* @throws IllegalArgumentException if {@code propertyName} is {@code null}
*/
PropertyDescriptor getConstraintsForProperty(String propertyName);
/**
* Returns a set of property descriptors having at least one constraint defined
* or marked as cascaded ({@link Valid}).
*
* If no property matches, an empty set is returned.
* Properties of super types are considered.
*
* @return the set of {@link PropertyDescriptor}s for the constraint properties; if
* there are no constraint properties, the empty set is returned
*/
Set getConstrainedProperties();
/**
* Returns a method descriptor for the given method.
*
* Returns {@code null} if no method with the given name and parameter types
* exists or the specified method neither has parameter or return value constraints nor a
* parameter or return value marked for cascaded validation.
* Methods of super types are considered.
*
* @param methodName the name of the method
* @param parameterTypes the parameter types of the method
* @return a method descriptor for the given method
* @throws IllegalArgumentException if {@code methodName} is {@code null}
*
* @since 1.1
*/
MethodDescriptor getConstraintsForMethod(String methodName, Class... parameterTypes);
/**
* Returns a set with descriptors for the constrained methods of the bean
* represented by this descriptor.
*
* Constrained methods have at least one parameter or return value constraint
* or at least one parameter or return value marked for cascaded validation.
* Methods of super types are considered.
*
* Only methods matching the given method type(s) are considered.
*
* @param methodType method type to consider
* @param methodTypes remaining optional method types to consider
* @return a set with descriptors for the constrained methods of this bean;
* will be empty if this bean has no constrained methods of the considered
* method type(s) but never {@code null}
*
* @since 1.1
*/
Set getConstrainedMethods(MethodType methodType,
MethodType... methodTypes);
/**
* Returns a constructor descriptor for the given constructor.
*
* Returns {@code null} if no constructor with the given parameter types
* exists or the specified constructor neither has parameter or return value
* constraints nor a parameter or return value marked for cascaded
* validation.
*
* @param parameterTypes the parameter types of the constructor
* @return a constructor descriptor for the given constructor
*
* @since 1.1
*/
ConstructorDescriptor getConstraintsForConstructor(Class... parameterTypes);
/**
* Returns a set with descriptors for the constrained constructors of the
* bean represented by this descriptor.
*
* Constrained constructors have at least one parameter or return value constraint
* or at least one parameter or return value marked for cascaded validation.
*
* @return a set with descriptors for the constrained constructor of this
* bean; will be empty if this bean has no constrained constructor
* but never {@code null}
*
* @since 1.1
*/
Set getConstrainedConstructors();
}