jdk8-mips64-public/jaxws: src/share/jaxws_classes/com/sun/xml/internal/ws/api/server/ThreadLocalContainerResolver.java@9c07ef4934dd

     1 /*

     2  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    26 package com.sun.xml.internal.ws.api.server;

    28 import java.util.concurrent.Executor;

    30 /**

    31  * ContainerResolver based on {@link ThreadLocal}.

    32  * <p>

    33  * The ThreadLocalContainerResolver is the default implementation available

    34  * from the ContainerResolver using {@link ContainerResolver#getDefault()}.  Code

    35  * sections that run with a Container must use the following pattern:

    36  * <pre>

    37  *   public void m() {

    38  *     Container old = ContainerResolver.getDefault().enterContainer(myContainer);

    39  *     try {

    40  *       // ... method body

    41  *     } finally {

    42  *       ContainerResolver.getDefault().exitContainer(old);

    43  *     }

    44  *   }

    45  * </pre>

    46  * @since 2.2.7

    47  */

    48 public class ThreadLocalContainerResolver extends ContainerResolver {

    49     private ThreadLocal<Container> containerThreadLocal = new ThreadLocal<Container>() {

    50         @Override

    51         protected Container initialValue() {

    52             return Container.NONE;

    53         }

    54     };

    56     public Container getContainer() {

    57         return containerThreadLocal.get();

    58     }

    60     /**

    61      * Enters container

    62      * @param container Container to set

    63      * @return Previous container; must be remembered and passed to exitContainer

    64      */

    65     public Container enterContainer(Container container) {

    66         Container old = containerThreadLocal.get();

    67         containerThreadLocal.set(container);

    68         return old;

    69     }

    71     /**

    72      * Exits container

    73      * @param old Container returned from enterContainer

    74      */

    75     public void exitContainer(Container old) {

    76         containerThreadLocal.set(old);

    77     }

    79     /**

    80      * Used by {@link com.sun.xml.internal.ws.api.pipe.Engine} to wrap asynchronous {@link com.sun.xml.internal.ws.api.pipe.Fiber} executions

    81      * @param container Container

    82      * @param ex Executor to wrap

    83      * @return an Executor that will set the container during executions of Runnables

    84      */

    85     public Executor wrapExecutor(final Container container, final Executor ex) {

    86         if (ex == null)

    87             return null;

    89         return new Executor() {

    90             @Override

    91             public void execute(final Runnable command) {

    92                 ex.execute(new Runnable() {

    93                     @Override

    94                     public void run() {

    95                         Container old = enterContainer(container);

    96                         try {

    97                             command.run();

    98                         } finally {

    99                             exitContainer(old);

   100                         }

   101                     }

   102                 });

   103             }

   104         };

   105     }

   106 }

Mercurial > jdk8-mips64-public > jaxws / file revision