jdk8-mips64-public/jaxws: src/share/jaxws_classes/com/sun/xml/internal/ws/api/server/AbstractInstanceResolver.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 com.sun.istack.internal.Nullable;

    29 import com.sun.istack.internal.localization.Localizable;

    30 import com.sun.xml.internal.ws.api.server.InstanceResolver;

    31 import com.sun.xml.internal.ws.api.server.ResourceInjector;

    32 import com.sun.xml.internal.ws.api.server.WSEndpoint;

    33 import com.sun.xml.internal.ws.resources.ServerMessages;

    34 import com.sun.xml.internal.ws.server.ServerRtException;

    36 import java.lang.annotation.Annotation;

    37 import java.lang.reflect.InvocationTargetException;

    38 import java.lang.reflect.Method;

    39 import java.security.AccessController;

    40 import java.security.PrivilegedAction;

    42 /**

    43  * Partial implementation of {@link InstanceResolver} with

    44  * convenience methods to do the resource injection.

    45  *

    46  * @author Kohsuke Kawaguchi

    47  * @since 2.2.6

    48  */

    49 public abstract class AbstractInstanceResolver<T> extends InstanceResolver<T> {

    51     protected static ResourceInjector getResourceInjector(WSEndpoint endpoint) {

    52         ResourceInjector ri = endpoint.getContainer().getSPI(ResourceInjector.class);

    53         if(ri==null)

    54             ri = ResourceInjector.STANDALONE;

    55         return ri;

    56     }

    58     /**

    59      * Helper for invoking a method with elevated privilege.

    60      */

    61     protected static void invokeMethod(final @Nullable Method method, final Object instance, final Object... args) {

    62         if(method==null)    return;

    63         AccessController.doPrivileged(new PrivilegedAction<Void>() {

    64             public Void run() {

    65                 try {

    66                     if (!method.isAccessible()) {

    67                         method.setAccessible(true);

    68                     }

    69                     MethodUtil.invoke(instance,method, args);

    70                 } catch (IllegalAccessException e) {

    71                     throw new ServerRtException("server.rt.err",e);

    72                 } catch (InvocationTargetException e) {

    73                     throw new ServerRtException("server.rt.err",e);

    74                 }

    75                 return null;

    76             }

    77         });

    78     }

    80     /**

    81      * Finds the method that has the given annotation, while making sure that

    82      * there's only at most one such method.

    83      */

    84     protected final @Nullable Method findAnnotatedMethod(Class clazz, Class<? extends Annotation> annType) {

    85         boolean once = false;

    86         Method r = null;

    87         for(Method method : clazz.getDeclaredMethods()) {

    88             if (method.getAnnotation(annType) != null) {

    89                 if (once)

    90                     throw new ServerRtException(ServerMessages.ANNOTATION_ONLY_ONCE(annType));

    91                 if (method.getParameterTypes().length != 0)

    92                     throw new ServerRtException(ServerMessages.NOT_ZERO_PARAMETERS(method));

    93                 r = method;

    94                 once = true;

    95             }

    96         }

    97         return r;

    98     }

    99 }

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