libjava/classpath/gnu/CORBA/Poa/ORB_1_4.java

   1 /* ORB_1_4.java --
   2    Copyright (C) 2005 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 gnu.CORBA.Poa;
  40
  41 import gnu.CORBA.OrbFunctional;
  42 import gnu.CORBA.IOR;
  43 import gnu.CORBA.Connected_objects.cObject;
  44 import gnu.CORBA.DynAn.gnuDynAnyFactory;
  45 import gnu.CORBA.Interceptor.ClientRequestInterceptors;
  46 import gnu.CORBA.Interceptor.IORInterceptors;
  47 import gnu.CORBA.Interceptor.Registrator;
  48 import gnu.CORBA.Interceptor.ServerRequestInterceptors;
  49 import gnu.CORBA.Interceptor.gnuIcCurrent;
  50 import gnu.CORBA.Interceptor.gnuIorInfo;
  51
  52 import org.omg.CORBA.Any;
  53 import org.omg.CORBA.BAD_OPERATION;
  54 import org.omg.CORBA.BAD_PARAM;
  55 import org.omg.CORBA.OBJECT_NOT_EXIST;
  56 import org.omg.CORBA.ORB;
  57 import org.omg.CORBA.Policy;
  58 import org.omg.CORBA.PolicyError;
  59 import org.omg.CORBA.portable.ObjectImpl;
  60 import org.omg.PortableInterceptor.PolicyFactory;
  61 import org.omg.PortableServer.Servant;
  62 import org.omg.PortableServer.POAManagerPackage.State;
  63 import org.omg.PortableServer.POAPackage.InvalidPolicy;
  64
  65 import java.applet.Applet;
  66 import java.util.Properties;
  67
  68 /**
  69  * The ORB, supporting POAs that are the feature of jdk 1.4.
  70  *
  71  * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
  72  */
  73 public class ORB_1_4
  74   extends OrbFunctional
  75 {
  76   /**
  77    * The root POA.
  78    */
  79   public final gnuPOA rootPOA;
  80
  81   /**
  82    * Maps the active threads to the invocation data ("POA Current's").
  83    */
  84   public gnuPoaCurrent currents = new gnuPoaCurrent();
  85
  86   /**
  87    * Maps the active threads to the interceptor data ("Interceptor Current's").
  88    */
  89   public gnuIcCurrent ic_current = new gnuIcCurrent(this);
  90
  91   /**
  92    * Creates dynamic anys.
  93    */
  94   public gnuDynAnyFactory factory = new gnuDynAnyFactory(this);
  95
  96   /**
  97    * Calls the parent constructor and additionally puts the "RootPOA",
  98    * "RootPOAManager", "POACurrent" and "DynAnyFactory" into initial references.
  99    */
 100   public ORB_1_4()
 101   {
 102     super();
 103     try
 104       {
 105         rootPOA = new gnuPOA(null, "RootPOA", null, StandardPolicies.rootPoa(), this);
 106       }
 107     catch (InvalidPolicy ex)
 108       {
 109         // Invalid default policy set.
 110         InternalError ierr = new InternalError();
 111         ierr.initCause(ex);
 112         throw ierr;
 113       }
 114     initial_references.put("RootPOA", rootPOA);
 115     initial_references.put("RootPOAManager", rootPOA.the_POAManager());
 116     initial_references.put("POACurrent", currents);
 117     initial_references.put("DynAnyFactory", factory);
 118     initial_references.put("PICurrent", ic_current);
 119   }
 120
 121   /**
 122    * If the super method detects that the object is not connected to this ORB,
 123    * try to find and activate the object.
 124    */
 125   public String object_to_string(org.omg.CORBA.Object forObject)
 126   {
 127     try
 128       {
 129         return super.object_to_string(forObject);
 130       }
 131     catch (Exception ex)
 132       {
 133         try
 134           {
 135             AOM.Obj exists = rootPOA.findObject(forObject);
 136             if (exists == null)
 137               throw new OBJECT_NOT_EXIST(forObject == null ? "null"
 138                 : forObject.toString());
 139             else if (exists.poa instanceof gnuPOA)
 140               ((gnuPOA) exists.poa).connect_to_orb(exists.key, forObject);
 141             else
 142               exists.poa.create_reference_with_id(exists.key,
 143                 ((ObjectImpl) exists.object)._ids()[0]);
 144           }
 145         catch (Exception bex)
 146           {
 147             BAD_PARAM bad = new BAD_PARAM("Unable to activate " + forObject);
 148             bad.initCause(bex);
 149             throw bad;
 150           }
 151
 152         return super.object_to_string(forObject);
 153       }
 154   }
 155
 156   /**
 157    * Destroy all poas and then call the superclass method.
 158    */
 159   public void destroy()
 160   {
 161     // This will propagate through the whole POA tree.
 162     rootPOA.destroy(true, false);
 163
 164     super.destroy();
 165   }
 166
 167   /**
 168    * Do interceptor registration.
 169    *
 170    * @param properties the properties, between those names the agreed prefix
 171    * "org.omg.PortableInterceptor.ORBInitializerClass." is searched.
 172    *
 173    * @param args the string array, passed to the ORB.init
 174    */
 175   protected void registerInterceptors(Properties properties, String[] args)
 176   {
 177     Registrator registrator = new Registrator(this, properties, args);
 178
 179     policyFactories = registrator.m_policyFactories;
 180
 181     registrator.pre_init();
 182     initial_references.putAll(registrator.getRegisteredReferences());
 183     registrator.post_init();
 184
 185     if (registrator.hasIorInterceptors())
 186       iIor = new IORInterceptors(registrator);
 187
 188     if (registrator.hasServerRequestInterceptors())
 189       iServer = new ServerRequestInterceptors(registrator);
 190
 191     if (registrator.hasClientRequestInterceptors())
 192       iClient = new ClientRequestInterceptors(registrator);
 193
 194     policyFactories = registrator.m_policyFactories;
 195   }
 196
 197   /**
 198    * Create IOR and allow registered interceptors to add additional components.
 199    */
 200   protected IOR createIOR(cObject ref)
 201     throws BAD_OPERATION
 202   {
 203     IOR ior = super.createIOR(ref);
 204     if (iIor != null)
 205       {
 206         AOM.Obj obj = rootPOA.findIorKey(ior.key);
 207
 208         gnuPOA poa;
 209
 210         // Null means that the object was connected to the ORB directly.
 211         if (obj == null)
 212           poa = rootPOA;
 213         else
 214           poa = obj.poa;
 215
 216         gnuIorInfo info = new gnuIorInfo(this, poa, ior);
 217
 218         // This may modify the ior.
 219         iIor.establish_components(info);
 220         iIor.components_established(info);
 221       }
 222     return ior;
 223   }
 224
 225   /**
 226    * Create policy using the previously registered factory.
 227    */
 228   public Policy create_policy(int type, Any value)
 229     throws PolicyError
 230   {
 231     Integer policy = new Integer(type);
 232
 233     PolicyFactory forge = (PolicyFactory) policyFactories.get(policy);
 234     if (forge == null)
 235       throw new PolicyError("No factory registered for policy " + type,
 236         (short) type);
 237     else
 238       return forge.create_policy(type, value);
 239   }
 240
 241   /**
 242    * Set the parameters and then register interceptors.
 243    */
 244   protected void set_parameters(Applet app, Properties props)
 245   {
 246     super.set_parameters(app, props);
 247     registerInterceptors(props, new String[0]);
 248   }
 249
 250   /**
 251    * Set the parameters and then register interceptors.
 252    */
 253   protected void set_parameters(String[] para, Properties props)
 254   {
 255     super.set_parameters(para, props);
 256     registerInterceptors(props, para);
 257   }
 258
 259   /**
 260    * This method is called by RMI-IIOP {@link javax.rmi.Tie#orb(ORB)}, passing
 261    * <code>this</code> as parameter. The ORB will try to connect that tie as
 262    * one of its objects, if it is not already connected. If the wrapper is an
 263    * instance of Servant this method also activates the root poa (if not already
 264    * active).
 265    */
 266   public void set_delegate(java.lang.Object wrapper)
 267   {
 268     if (wrapper instanceof org.omg.CORBA.Object)
 269       {
 270         org.omg.CORBA.Object object = (org.omg.CORBA.Object) wrapper;
 271         if (connected_objects.getKey(object) == null)
 272           connect(object);
 273       }
 274     else if (wrapper instanceof Servant)
 275       {
 276         Servant s = (Servant) wrapper;
 277         if (rootPOA.findServant(s) == null)
 278           try
 279             {
 280               rootPOA.servant_to_reference(s);
 281               if (rootPOA.the_POAManager().get_state().value() == State._HOLDING)
 282                 rootPOA.the_POAManager().activate();
 283             }
 284           catch (Exception e)
 285             {
 286               BAD_OPERATION bad = new BAD_OPERATION("Unable to connect "
 287                 + wrapper + " to " + this);
 288               throw bad;
 289             }
 290       }
 291   }
 292
 293 }