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• ValidationInterceptor.java

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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2015 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
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 *
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 * file and include the License file at packager/legal/LICENSE.txt.
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 *
 * Modifications:
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package org.glassfish.jersey.server.spi;

import javax.validation.ConstraintViolationException;
import javax.validation.ValidationException;

import org.glassfish.jersey.spi.Contract;

/**
 * Interceptor for method validation processing.
 *
 * Allows to override the default Jersey behaviour. By default, the Jersey runtime throws a
 * {@link javax.validation.ValidationException} or one of its subclasses,
 * that gets mapped to a HTTP 400 response, if any validation issues occur. In such case
 * the actual resource method does not get invoked at all.
 * 

 * Validation interceptor implementation allows to e.g. swallow the {@link ConstraintViolationException}
 * and handle the validation issues in the resource method. It is also possible to tweak
 * validated components. This could be utilized in case of proxied resources,
 * when field validation is not possible on a dynamic proxy, and the validator requires
 * the original delegated instance.
 * 
 * 

 * Each validation interceptor implementation must invoke proceed
 * method on provided interceptor context as part of interception processing.
 * 
 *
 * @author Jakub Podlesak (jakub.podleak at oracle.com)
 * @since 2.18
 */
@Contract
public interface ValidationInterceptor {

    /**
     * Used to intercept resource method validation processing.
     * 

     * To allow further validation processing, every and each implementation
     * must invoke {@link ValidationInterceptorContext#proceed()} method.
     *
     * @param context method validation context.
     * @throws ValidationException in case the validation exception should be thrown as a result of the validation processing.
     */
    public void onValidate(ValidationInterceptorContext context) throws ValidationException;
}