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81 lines
3.3 KiB
Java
81 lines
3.3 KiB
Java
/*
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* Copyright (c) 2005, 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package javax.annotation;
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import java.lang.annotation.*;
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import static java.lang.annotation.ElementType.*;
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import static java.lang.annotation.RetentionPolicy.*;
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/**
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* The PreDestroy annotation is used on methods as a callback notification to
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* signal that the instance is in the process of being removed by the
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* container. The method annotated with PreDestroy is typically used to
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* release resources that it has been holding. This annotation MUST be
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* supported by all container managed objects that support PostConstruct
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* except the application client container in Java EE 5. The method on which
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* the PreDestroy annotation is applied MUST fulfill all of the following
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* criteria:
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* <ul>
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* <li>The method MUST NOT have any parameters except in the case of
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* interceptors in which case it takes an InvocationContext object as
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* defined by the Interceptors specification.</li>
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* <li>The method defined on an interceptor class MUST HAVE one of the
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* following signatures:
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* <p>
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* void <METHOD>(InvocationContext)
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* <p>
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* Object <METHOD>(InvocationContext) throws Exception
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* <p>
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* <i>Note: A PreDestroy interceptor method must not throw application
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* exceptions, but it may be declared to throw checked exceptions including
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* the java.lang.Exception if the same interceptor method interposes on
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* business or timeout methods in addition to lifecycle events. If a
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* PreDestroy interceptor method returns a value, it is ignored by
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* the container.</i>
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* </li>
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* <li>The method defined on a non-interceptor class MUST HAVE the
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* following signature:
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* <p>
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* void <METHOD>()
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* </li>
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* <li>The method on which PreDestroy is applied MAY be public, protected,
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* package private or private.</li>
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* <li>The method MUST NOT be static.</li>
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* <li>The method MAY be final.</li>
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* <li>If the method throws an unchecked exception it is ignored except in the
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* case of EJBs where the EJB can handle exceptions.</li>
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* </ul>
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*
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* @see javax.annotation.PostConstruct
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* @see javax.annotation.Resource
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* @since 1.6, Common Annotations 1.0
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*/
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@Documented
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@Retention (RUNTIME)
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@Target(METHOD)
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public @interface PreDestroy {
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}
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