1 /*
   2  * Copyright (c) 2002, 2010, 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 package com.sun.corba.se.spi.orb ;
  26 
  27 import java.util.Map ;
  28 import java.util.Set ;
  29 import java.util.Iterator ;
  30 import java.util.Properties ;
  31 
  32 import java.security.PrivilegedExceptionAction ;
  33 import java.security.PrivilegedActionException ;
  34 import java.security.AccessController ;
  35 
  36 import java.lang.reflect.Field ;
  37 
  38 import org.omg.CORBA.INTERNAL ;
  39 
  40 import com.sun.corba.se.spi.logging.CORBALogDomains ;
  41 
  42 import com.sun.corba.se.impl.logging.ORBUtilSystemException ;
  43 
  44 import com.sun.corba.se.impl.orbutil.ObjectUtility ;
  45 
  46 // XXX This could probably be further extended by using more reflection and
  47 // a dynamic proxy that satisfies the interfaces that are inherited by the
  48 // more derived class.  Do we want to go that far?
  49 public abstract class ParserImplBase {
  50     private ORBUtilSystemException wrapper ;
  51 
  52     protected abstract PropertyParser makeParser() ;
  53 
  54     /** Override this method if there is some needed initialization
  55     * that takes place after argument parsing.  It is always called
  56     * at the end of setFields.
  57     */
  58     protected void complete()
  59     {
  60     }
  61 
  62     public ParserImplBase()
  63     {
  64         // Do nothing in this case: no parsing takes place
  65         wrapper = ORBUtilSystemException.get(
  66             CORBALogDomains.ORB_LIFECYCLE ) ;
  67     }
  68 
  69     public void init( DataCollector coll )
  70     {
  71         PropertyParser parser = makeParser() ;
  72         coll.setParser( parser ) ;
  73         Properties props = coll.getProperties() ;
  74         Map map = parser.parse( props ) ;
  75         setFields( map ) ;
  76     }
  77 
  78     private Field getAnyField( String name )
  79     {
  80         Field result = null ;
  81 
  82         try {
  83             Class cls = this.getClass() ;
  84             result = cls.getDeclaredField( name ) ;
  85             while (result == null) {
  86                 cls = cls.getSuperclass() ;
  87                 if (cls == null)
  88                     break ;
  89 
  90                 result = cls.getDeclaredField( name ) ;
  91             }
  92         } catch (Exception exc) {
  93             throw wrapper.fieldNotFound( exc, name ) ;
  94         }
  95 
  96         if (result == null)
  97             throw wrapper.fieldNotFound( name ) ;
  98 
  99         return result ;
 100     }
 101 
 102     protected void setFields( Map map )
 103     {
 104         Set entries = map.entrySet() ;
 105         Iterator iter = entries.iterator() ;
 106         while (iter.hasNext()) {
 107             java.util.Map.Entry entry = (java.util.Map.Entry)(iter.next()) ;
 108             final String name = (String)(entry.getKey()) ;
 109             final Object value = entry.getValue() ;
 110 
 111             try {
 112                 AccessController.doPrivileged(
 113                     new PrivilegedExceptionAction() {
 114                         public Object run() throws IllegalAccessException,
 115                             IllegalArgumentException
 116                         {
 117                             Field field = getAnyField( name ) ;
 118                             field.setAccessible( true ) ;
 119                             field.set( ParserImplBase.this, value ) ;
 120                             return null ;
 121                         }
 122                     }
 123                 ) ;
 124             } catch (PrivilegedActionException exc) {
 125                 // Since exc wraps the actual exception, use exc.getCause()
 126                 // instead of exc.
 127                 throw wrapper.errorSettingField( exc.getCause(), name,
 128                     value.toString() ) ;
 129             }
 130         }
 131 
 132         // Make sure that any extra initialization takes place after all the
 133         // fields are set from the map.
 134         complete() ;
 135     }
 136 }