| /* Connected_objects.java -- |
| Copyright (C) 2005 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package gnu.CORBA; |
| |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.TreeMap; |
| |
| /** |
| * The repository of objects, that have been connected to the |
| * {@link FunctionalORB} by the method |
| * {@link ORB.connect(org.omg.CORBA.Object)}. |
| * |
| * @author Audrius Meskauskas (AudriusA@Bioinformatics.org) |
| */ |
| public class Connected_objects |
| { |
| /** |
| * The reference data about the connected object. |
| */ |
| public class cObject |
| { |
| /** |
| * Create an initialised instance. |
| */ |
| cObject(org.omg.CORBA.Object _object, int _port, byte[] _key, |
| java.lang.Object an_identity |
| ) |
| { |
| object = _object; |
| port = _port; |
| key = _key; |
| identity = an_identity; |
| } |
| |
| /** |
| * The object. |
| */ |
| public final org.omg.CORBA.Object object; |
| |
| /** |
| * The port on that the object is connected. |
| */ |
| public final int port; |
| |
| /** |
| * The object key. |
| */ |
| public final byte[] key; |
| |
| /** |
| * The shared serving identity (usually POA) or null if no such |
| * applicable. |
| */ |
| public final java.lang.Object identity; |
| } |
| |
| /** |
| * The free number to give for the next instance. |
| * This field is incremented each time the |
| * new collection of the connected objects is created. |
| * Each collection has its own unique instance number. |
| */ |
| private static long free_object_number; |
| |
| /** |
| * The map of the all connected objects, maps the object key to the |
| * object. |
| */ |
| private Map objects = new TreeMap(new ByteArrayComparator()); |
| |
| /** |
| * Get the record of the stored object. |
| * |
| * @param object the stored object |
| * |
| * @return the record about the stored object, null if |
| * this object is not stored here. |
| */ |
| public cObject getKey(org.omg.CORBA.Object stored_object) |
| { |
| synchronized (objects) |
| { |
| Map.Entry item; |
| Iterator iter = objects.entrySet().iterator(); |
| cObject ref; |
| |
| while (iter.hasNext()) |
| { |
| item = (Map.Entry) iter.next(); |
| ref = (cObject) item.getValue(); |
| if (stored_object.equals(ref.object) || |
| stored_object._is_equivalent(ref.object) |
| ) |
| return ref; |
| } |
| } |
| |
| return null; |
| } |
| |
| /** |
| * Add the new object to the repository. The object key is |
| * generated automatically. |
| * |
| * @param object the object to add. |
| * @param port, on that the ORB will be listening to the remote |
| * invocations. |
| * |
| * @return the newly created object record. |
| */ |
| public cObject add(org.omg.CORBA.Object object, int port) |
| { |
| return add(generateObjectKey(object), object, port, null); |
| } |
| |
| /** |
| * Add the new object to the repository. |
| * |
| * @param key the object key. |
| * @param object the object to add. |
| * @param port the port, on that the ORB will be listening on the |
| * remote invocations. |
| */ |
| public cObject add(byte[] key, org.omg.CORBA.Object object, int port, |
| java.lang.Object identity |
| ) |
| { |
| cObject rec = new cObject(object, port, key, identity); |
| synchronized (objects) |
| { |
| objects.put(key, rec); |
| } |
| return rec; |
| } |
| |
| /** |
| * Get the stored object. |
| * |
| * @param key the key (in the byte array form). |
| * |
| * @return the matching object, null if none is matching. |
| */ |
| public cObject get(byte[] key) |
| { |
| synchronized (objects) |
| { |
| return (cObject) objects.get(key); |
| } |
| } |
| |
| /** |
| * Get the map entry set. |
| */ |
| public Set entrySet() |
| { |
| return objects.entrySet(); |
| } |
| |
| /** |
| * Remove the given object. |
| * |
| * @param object the object to remove. |
| */ |
| public void remove(org.omg.CORBA.Object object) |
| { |
| synchronized (objects) |
| { |
| cObject ref = getKey(object); |
| if (ref != null) |
| objects.remove(ref.key); |
| } |
| } |
| |
| /** |
| * Remove the given object, indiciating it by the key. |
| * |
| * @param object the object to remove. |
| */ |
| public void remove(byte[] key) |
| { |
| objects.remove(key); |
| } |
| |
| /** |
| * Generate the object key, unique in the currently |
| * running java virtual machine. |
| * |
| * The generated key includes the object class name |
| * and the absolute instance number. |
| * |
| * @return the generated key. |
| */ |
| protected byte[] generateObjectKey(org.omg.CORBA.Object object) |
| { |
| return (object.getClass().getName() + ":" + getFreeInstanceNumber()).getBytes(); |
| } |
| |
| /** |
| * Get next free instance number. |
| */ |
| private static synchronized long getFreeInstanceNumber() |
| { |
| long instance_number = free_object_number; |
| free_object_number++; |
| return instance_number; |
| } |
| } |