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95 lines
3.0 KiB
95 lines
3.0 KiB
/*
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* Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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package javax.xml.bind;
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/**
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* A basic event handler interface for validation errors.
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*
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* <p>
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* If an application needs to implement customized event handling, it must
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* implement this interface and then register it with either the
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* {@link Unmarshaller#setEventHandler(ValidationEventHandler) Unmarshaller},
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* the {@link Validator#setEventHandler(ValidationEventHandler) Validator}, or
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* the {@link Marshaller#setEventHandler(ValidationEventHandler) Marshaller}.
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* The JAXB Provider will then report validation errors and warnings encountered
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* during the unmarshal, marshal, and validate operations to these event
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* handlers.
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*
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* <p>
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* If the <tt>handleEvent</tt> method throws an unchecked runtime exception,
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* the JAXB Provider must treat that as if the method returned false, effectively
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* terminating whatever operation was in progress at the time (unmarshal,
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* validate, or marshal).
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*
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* <p>
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* Modifying the Java content tree within your event handler is undefined
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* by the specification and may result in unexpected behaviour.
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*
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* <p>
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* Failing to return false from the <tt>handleEvent</tt> method after
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* encountering a fatal error is undefined by the specification and may result
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* in unexpected behavior.
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*
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* <p>
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* <b>Default Event Handler</b>
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* <blockquote>
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* See: <a href="Validator.html#defaulthandler">Validator javadocs</a>
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* </blockquote>
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*
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* @author <ul><li>Ryan Shoemaker, Sun Microsystems, Inc.</li><li>Kohsuke Kawaguchi, Sun Microsystems, Inc.</li><li>Joe Fialli, Sun Microsystems, Inc.</li></ul>
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* @see Unmarshaller
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* @see Validator
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* @see Marshaller
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* @see ValidationEvent
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* @see javax.xml.bind.util.ValidationEventCollector
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* @since JAXB1.0
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*/
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public interface ValidationEventHandler {
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/**
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* Receive notification of a validation warning or error.
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*
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* The ValidationEvent will have a
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* {@link ValidationEventLocator ValidationEventLocator} embedded in it that
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* indicates where the error or warning occurred.
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*
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* <p>
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* If an unchecked runtime exception is thrown from this method, the JAXB
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* provider will treat it as if the method returned false and interrupt
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* the current unmarshal, validate, or marshal operation.
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*
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* @param event the encapsulated validation event information. It is a
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* provider error if this parameter is null.
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* @return true if the JAXB Provider should attempt to continue the current
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* unmarshal, validate, or marshal operation after handling this
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* warning/error, false if the provider should terminate the current
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* operation with the appropriate <tt>UnmarshalException</tt>,
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* <tt>ValidationException</tt>, or <tt>MarshalException</tt>.
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* @throws IllegalArgumentException if the event object is null.
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*/
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public boolean handleEvent( ValidationEvent event );
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}
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