Source for org.omg.CORBA.PolicyHelper

   1: /* PolicyHelper.java --
   2:    Copyright (C) 2005, 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: module.  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 org.omg.CORBA;
  40: 
  41: import gnu.CORBA.Minor;
  42: import gnu.CORBA.OrbRestricted;
  43: 
  44: import org.omg.CORBA.Any;
  45: import org.omg.CORBA.BAD_OPERATION;
  46: import org.omg.CORBA.TypeCode;
  47: import org.omg.CORBA.portable.Delegate;
  48: import org.omg.CORBA.portable.InputStream;
  49: import org.omg.CORBA.portable.ObjectImpl;
  50: import org.omg.CORBA.portable.OutputStream;
  51: 
  52: /**
  53: * The helper operations for the
  54: * CORBA object {@link Policy}.
  55: *
  56: * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
  57: */
  58: public abstract class PolicyHelper
  59: {
  60:   /**
  61:    * Get the type code of the {@link Policy}.
  62:    *
  63:    * @return interface typecode, named "Policy".
  64:    */
  65:   public static TypeCode type()
  66:   {
  67:     return OrbRestricted.Singleton.create_interface_tc(id(), "Policy");
  68:   }
  69: 
  70:   /**
  71:    * Insert the Policy into the given Any.
  72:    *
  73:    * @param any the Any to insert into.
  74:    * @param that the Policy to insert.
  75:    */
  76:   public static void insert(Any any, Policy that)
  77:   {
  78:     any.insert_Streamable(new PolicyHolder(that));
  79:   }
  80: 
  81:   /**
  82:    * Extract the Policy from given Any.
  83:    *
  84:    * @throws BAD_OPERATION if the passed Any does not contain Policy.
  85:    */
  86:   public static Policy extract(Any any)
  87:   {
  88:     try
  89:       {
  90:         PolicyHolder h = (PolicyHolder) any.extract_Streamable();
  91:         return h.value;
  92:       }
  93:     catch (ClassCastException ex)
  94:       {
  95:         BAD_OPERATION bad = new BAD_OPERATION("Policy expected");
  96:         bad.minor = Minor.Any;
  97:         throw bad;
  98:       }
  99:   }
 100: 
 101:   /**
 102:    * Get the Policy repository id.
 103:    *
 104:    * @return "IDL:omg.org/CORBA/Policy:1.0", always.
 105:    */
 106:   public static String id()
 107:   {
 108:     return "IDL:omg.org/CORBA/Policy:1.0";
 109:   }
 110: 
 111:   /**
 112:    * Cast the passed object into the Policy. If the
 113:    * object has a different java type, create an instance
 114:    * of the _PolicyStub, using the same delegate, as for
 115:    * the passed parameter. Hence, unlike java type cast,
 116:    * this method may return a different object, than has been passed.
 117:    *
 118:    * @param obj the object to narrow.
 119:    * @return narrowed instance.
 120:    * @throws BAD_PARAM if the passed object is not a Policy.
 121:    */
 122:   public static Policy narrow(org.omg.CORBA.Object obj)
 123:   {
 124:     if (obj == null)
 125:       return null;
 126:     else if (obj instanceof Policy)
 127:       return (Policy) obj;
 128:     else
 129:       {
 130:         // Check for the policy id cannot be performed because
 131:         // this helper must read various subclasses of the Policy,
 132:         // and the IOR profile currently supports only one id.
 133: 
 134:         Delegate delegate = ((ObjectImpl) obj)._get_delegate();
 135:         return new _PolicyStub(delegate);
 136:       }
 137:   }
 138: 
 139:   /**
 140:    * Read the object from the CDR intput stream (IOR profile expected).
 141:    *
 142:    * @param input a org.omg.CORBA.portable stream to read from.
 143:    */
 144:   public static Policy read(InputStream input)
 145:   {
 146:     return narrow(input.read_Object());
 147:   }
 148: 
 149:   /**
 150:    * Write the object to the CDR output stream (as IOR profile).
 151:    *
 152:    * @param output a org.omg.CORBA.portable stream stream to write into.
 153:    * @param value a value to write.
 154:    */
 155:   public static void write(OutputStream output, Policy value)
 156:   {
 157:     output.write_Object(value);
 158:   }