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  */
  25 
  26 package com.sun.xml.internal.ws.spi.db;
  27 
  28 import java.lang.reflect.Method;
  29 import java.security.AccessController;
  30 import java.security.PrivilegedActionException;
  31 import java.security.PrivilegedExceptionAction;
  32 
  33 
  34 /**
  35  * MethodGetter
  36  * @author shih-chang.chen@oracle.com
  37  * @exclude
  38  */
  39 public class MethodGetter extends PropertyGetterBase {
  40 
  41     private Method method;
  42 
  43     public MethodGetter(Method m) {
  44         method = m;
  45         type = m.getReturnType();
  46     }
  47 
  48     public Method getMethod() {
  49         return method;
  50     }
  51 
  52     public <A> A getAnnotation(Class<A> annotationType) {
  53         Class c = annotationType;
  54         return (A) method.getAnnotation(c);
  55     }
  56 
  57 
  58     static class PrivilegedGetter implements PrivilegedExceptionAction {
  59         private Object value;
  60         private Method method;
  61         private Object instance;
  62         public PrivilegedGetter(Method m, Object instance) {
  63             super();
  64             this.method = m;
  65             this.instance = instance;
  66         }
  67         public Object run() throws IllegalAccessException {
  68             if (!method.isAccessible()) {
  69                 method.setAccessible(true);
  70             }
  71             try {
  72                 value = method.invoke(instance, new Object[0]);
  73             } catch (Exception e) {
  74                 // TODO Auto-generated catch block
  75                 e.printStackTrace();
  76             }
  77             return null;
  78         }
  79     }
  80 
  81     public Object get(final Object instance) {
  82         final Object[] args = new Object[0];
  83         try {
  84             if (method.isAccessible()) {
  85                 return method.invoke(instance, args);
  86             } else {
  87                 PrivilegedGetter privilegedGetter = new PrivilegedGetter(method, instance);
  88                 try {
  89                     AccessController.doPrivileged(privilegedGetter);
  90                 } catch (PrivilegedActionException e) {
  91                     // TODO Auto-generated catch block
  92                     e.printStackTrace();
  93                 }
  94                 return privilegedGetter.value;
  95             }
  96         } catch (Exception e) {
  97             // TODO Auto-generated catch block
  98             e.printStackTrace();
  99         }
 100         return null;
 101     }
 102 }