libjava/classpath/gnu/javax/naming/giop/ListEnumeration.java

   1 /* ListEnumeration.java -- handles corbaname: urls
   2    Copyright (C) 2006 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 odule.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38
  39 package gnu.javax.naming.giop;
  40
  41 import gnu.java.lang.CPStringBuilder;
  42
  43 import javax.naming.NameClassPair;
  44 import javax.naming.NamingEnumeration;
  45
  46 import org.omg.CosNaming.Binding;
  47 import org.omg.CosNaming.BindingIteratorHolder;
  48 import org.omg.CosNaming.BindingListHolder;
  49 import org.omg.CosNaming.BindingType;
  50 import org.omg.CosNaming.NamingContext;
  51
  52 /**
  53  * Iterates over name class pairs, obtaining values first from the binding list
  54  * and then from the binding iterator.
  55  *
  56  * @author Audrius Meskauskas
  57  */
  58 public class ListEnumeration extends GiopNamingEnumeration implements
  59     NamingEnumeration
  60 {
  61   /**
  62    * Create the new enumeration
  63    *
  64    * @param bh
  65    *          holder, containing the first portion of the bindings
  66    * @param bih
  67    *          the iterator, containing the remaining bindings
  68    * @param batchSize
  69    *          the number of bindings the the iterator will be requested to
  70    *          return as a single pack
  71    */
  72   public ListEnumeration(BindingListHolder bh,
  73                                  BindingIteratorHolder bih, int batchSize)
  74   {
  75     super(bh, bih, batchSize);
  76   }
  77
  78   /**
  79    * Convert from the CORBA binding into the {@link NameClassPair} that this
  80    * enumeration should return. This method converts into NameClassPair,
  81    * connecting the name components with slashes and setting the class name
  82    * to either NamingContext or GIOP Object.
  83    *
  84    * @param binding
  85    *          the binding to convert
  86    * @return the value, that must be returned by the {@link #next()}.
  87    */
  88   public Object convert(Binding binding)
  89   {
  90     CPStringBuilder name = new CPStringBuilder();
  91
  92     for (int i = 0; i < binding.binding_name.length; i++)
  93       {
  94         name.append(binding.binding_name[i]);
  95         if (i < binding.binding_name.length - 1)
  96           name.append('/');
  97       }
  98
  99     String className;
 100
 101     switch (binding.binding_type.value())
 102       {
 103       case BindingType._ncontext:
 104         className = NamingContext.class.getName();
 105         break;
 106       case BindingType._nobject:
 107         className = org.omg.CORBA.Object.class.getName();
 108         break;
 109       default:
 110         className = Object.class.getName();
 111         break;
 112       }
 113
 114     NameClassPair pair = new NameClassPair(name.toString(), className);
 115     return pair;
 116   }
 117
 118 }