Source for gnu.javax.naming.giop.ListEnumeration

   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: }