ohair@286: /*
alanb@368:  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
ohair@286:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
ohair@286:  *
ohair@286:  * This code is free software; you can redistribute it and/or modify it
ohair@286:  * under the terms of the GNU General Public License version 2 only, as
ohair@286:  * published by the Free Software Foundation.  Oracle designates this
ohair@286:  * particular file as subject to the "Classpath" exception as provided
ohair@286:  * by Oracle in the LICENSE file that accompanied this code.
ohair@286:  *
ohair@286:  * This code is distributed in the hope that it will be useful, but WITHOUT
ohair@286:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
ohair@286:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
ohair@286:  * version 2 for more details (a copy is included in the LICENSE file that
ohair@286:  * accompanied this code).
ohair@286:  *
ohair@286:  * You should have received a copy of the GNU General Public License version
ohair@286:  * 2 along with this work; if not, write to the Free Software Foundation,
ohair@286:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
ohair@286:  *
ohair@286:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@286:  * or visit www.oracle.com if you need additional information or have any
ohair@286:  * questions.
ohair@286:  */
ohair@286: 
ohair@286: package com.sun.xml.internal.ws.spi.db;
ohair@286: 
ohair@286: import java.lang.reflect.Field;
ohair@286: import java.security.AccessController;
ohair@286: import java.security.PrivilegedActionException;
ohair@286: import java.security.PrivilegedExceptionAction;
ohair@286: 
ohair@286: 
ohair@286: /**
ohair@286:  * FieldGetter gets the value of a field from an instance.
ohair@286:  *
ohair@286:  * @author shih-chang.chen@oracle.com
ohair@286:  * @exclude
ohair@286:  */
ohair@286: public class FieldGetter extends PropertyGetterBase {
ohair@286: 
ohair@286:     protected Field field;
ohair@286: 
ohair@286:     public FieldGetter(Field f) {
ohair@286:         field = f;
ohair@286:         type = f.getType();
ohair@286:     }
ohair@286: 
ohair@286:     public Field getField() {
ohair@286:         return field;
ohair@286:     }
ohair@286: 
ohair@286:     static class PrivilegedGetter implements PrivilegedExceptionAction {
ohair@286:         private Object value;
ohair@286:         private Field  field;
ohair@286:         private Object instance;
ohair@286:         public PrivilegedGetter(Field field, Object instance) {
ohair@286:             super();
ohair@286:             this.field = field;
ohair@286:             this.instance = instance;
ohair@286:         }
ohair@286:         public Object run() throws IllegalAccessException {
ohair@286:             if (!field.isAccessible()) {
ohair@286:                 field.setAccessible(true);
ohair@286:             }
ohair@286:             value = field.get(instance);
ohair@286:             return null;
ohair@286:         }
ohair@286:     }
ohair@286: 
ohair@286:     public Object get(final Object instance) {
ohair@286:         if (field.isAccessible()) {
ohair@286:             try {
ohair@286:                 return field.get(instance);
ohair@286:             } catch (Exception e) {
ohair@286:                 // TODO Auto-generated catch block
ohair@286:                 e.printStackTrace();
ohair@286:             }
ohair@286:         } else {
ohair@286:             PrivilegedGetter privilegedGetter = new PrivilegedGetter(field, instance);
ohair@286:             try {
ohair@286:                 AccessController.doPrivileged(privilegedGetter);
ohair@286:             } catch (PrivilegedActionException e) {
ohair@286:                 // TODO Auto-generated catch block
ohair@286:                 e.printStackTrace();
ohair@286:             }
ohair@286:             return privilegedGetter.value;
ohair@286:         }
ohair@286:         return null;
ohair@286:     }
ohair@286: 
ohair@286:     public <A> A getAnnotation(Class<A> annotationType) {
ohair@286:         Class c = annotationType;
ohair@286:         return (A) field.getAnnotation(c);
ohair@286:     }
ohair@286: }