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 // $Id: TraversableResolver.java 17620 2009-10-04 19:19:28Z hardy.ferentschik $
 /*
 * JBoss, Home of Professional Open Source
 * Copyright 2009, 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 javax.validation;
Contract determining if a property can be accessed by the Bean Validation provider. This contract is called for each property that is being either validated or cascaded. A traversable resolver implementation must be thread-safe.

Author(s):
Emmanuel Bernard
public interface TraversableResolver {
Determine if the Bean Validation provider is allowed to reach the property state

Parameters:
traversableObject object hosting traversableProperty or null if validateValue is called
traversableProperty the traversable property.
rootBeanType type of the root object passed to the Validator.
pathToTraversableObject path from the root object to traversableObject (using the path specification defined by Bean Validator).
elementType either FIELD or METHOD.
Returns:
true if the Bean Validation provider is allowed to reach the property state, false otherwise.
	boolean isReachable(Object traversableObject,
						Path.Node traversableProperty,
						Class<?> rootBeanType,
						Path pathToTraversableObject,
						ElementType elementType);

Determine if the Bean Validation provider is allowed to cascade validation on the bean instance returned by the property value marked as @Valid. Note that this method is called only if isReachable returns true for the same set of arguments and if the property is marked as @Valid

Parameters:
traversableObject object hosting traversableProperty or null if validateValue is called
traversableProperty the traversable property.
rootBeanType type of the root object passed to the Validator.
pathToTraversableObject path from the root object to traversableObject (using the path specification defined by Bean Validator).
elementType either FIELD or METHOD.
Returns:
true if the Bean Validation provider is allowed to cascade validation, false otherwise.
	boolean isCascadable(Object traversableObject,
						 Path.Node traversableProperty,
						 Class<?> rootBeanType,
						 Path pathToTraversableObject,
						 ElementType elementType);
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