/*
* JBoss, Home of Professional Open Source
* Copyright 2010, Red Hat, Inc. and/or its affiliates, and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.hibernate.validator.metadata;
import java.lang.annotation.Annotation;
import java.lang.reflect.Member;
import org.hibernate.validator.metadata.location.BeanConstraintLocation;
import org.hibernate.validator.util.ReflectionHelper;
/**
* A {@link MetaConstraint} implementation that represents a field,
* property-level or class level constraint and allows the unified handling of
* these constraints.
*
* @author Gunnar Morling
*/
public class BeanMetaConstraint<A extends Annotation> extends MetaConstraint<A> {
/**
* Creates a new {@link BeanMetaConstraint}.
*
* @param constraintDescriptor The descriptor for this constraint.
* @param beanClass The type hosting this constraint.
* @param member The field or getter method hosting this constraint if this is
* not a class-level constraint, otherwise null.
*/
public BeanMetaConstraint(ConstraintDescriptorImpl<A> constraintDescriptor, Class<?> beanClass, Member member) {
super( constraintDescriptor, new BeanConstraintLocation( beanClass, member ) );
}
/**
* Returns the location of this constraint.
*/
public BeanConstraintLocation getLocation() {
return (BeanConstraintLocation) location;
}
/**
* @param o the object from which to retrieve the value.
*
* @return Returns the value for this constraint from the specified object. Depending on the type either the value itself
* is returned of method or field access is used to access the value.
*/
public Object getValue(Object o) {
if ( getLocation().getMember() == null ) {
return o;
}
else {
return ReflectionHelper.getValue( getLocation().getMember(), o );
}
}
}