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Bean Validation API

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// $Id$
/*
* 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;

/**
 * Instantiate a ConstraintValidator instance based off its class.
 * The ConstraintValidatorFactory is not responsible
 * for calling {@link ConstraintValidator#initialize(java.lang.annotation.Annotation)}.
 *
 * @author Dhanji R. Prasanna
 * @author Emmanuel Bernard
 * @author Hardy Ferentschik
 */
public interface ConstraintValidatorFactory {

	/**
	 * @param key The class of the constraint validator to instantiate.
	 *
	 * @return A constraint validator instance of the specified class.
	 */
	> T getInstance(Class key);

	/**
     * Signal ConstraintValidatorFactory that the instance is no longer
     * being used by the Bean Validation provider
	 *
     * @param instance validator being released
     */
    void releaseInstance(ConstraintValidator instance);
}