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 // $Id: ConstraintValidator.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;
Defines the logic to validate a given constraint A for a given object type T. Implementations must comply to the following restriction:
  • T must resolve to a non parameterized type
  • or generic parameters of T must be unbounded wildcard types

Author(s):
Emmanuel Bernard
Hardy Ferentschik
public interface ConstraintValidator<A extends Annotation, T> {
Initialize the validator in preparation for isValid calls. The constraint annotation for a given constraint declaration is passed.

This method is guaranteed to be called before any use of this instance for validation.

Parameters:
constraintAnnotation annotation instance for a given constraint declaration
	void initialize(A constraintAnnotation);

Implement the validation logic. The state of value must not be altered. This method can be accessed concurrently, thread-safety must be ensured by the implementation.

Parameters:
value object to validate
context context in which the constraint is evaluated
Returns:
false if value does not pass the constraint
	boolean isValid(T valueConstraintValidatorContext context);
}
 
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