| /* NamingMap.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.NamingService; |
| |
| import org.omg.CosNaming.NameComponent; |
| import org.omg.CosNaming.NamingContextPackage.AlreadyBound; |
| import org.omg.CosNaming.NamingContextPackage.InvalidName; |
| |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.TreeMap; |
| |
| /** |
| * The Naming Map maps the single names components into associated objects or |
| * naming contexts. |
| * |
| * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) |
| */ |
| public class NamingMap |
| { |
| /** |
| * The actual map. |
| */ |
| protected final TreeMap map; |
| |
| /** |
| * Creates an instance of the naming map, intialising the comparator |
| * to the {@link NameComponentComparator}. |
| */ |
| public NamingMap() |
| { |
| map = new TreeMap(NameComponentComparator.singleton); |
| } |
| |
| /** |
| * Put the given GIOP object, specifying the given name as a key. |
| * If the entry with the given name already exists, or if the given |
| * object is already mapped under another name, the |
| * {@link AlreadyBound} exception will be thrown. |
| * |
| * @param name the name |
| * @param object the object |
| */ |
| public void bind(NameComponent name, org.omg.CORBA.Object object) |
| throws AlreadyBound, InvalidName |
| { |
| if (containsKey(name)) |
| { |
| Object x = get(name); |
| |
| // Do not throw an exception if the same object is named by |
| // the same name. |
| if (x.equals(object)) |
| throw new AlreadyBound("The name is in use for another object"); |
| } |
| else |
| { |
| if (containsValue(object)) |
| throw new AlreadyBound("The object has another name"); |
| } |
| |
| // There are no restrictions in binding the object. |
| rebind(name, object); |
| } |
| |
| /** |
| * Checks if this map contains the definition of the given name. |
| * |
| * @param key the name to check. |
| */ |
| public boolean containsKey(NameComponent key) |
| { |
| return map.containsKey(key); |
| } |
| |
| /** |
| * Checks if this map contains the definition of the given object. |
| * |
| * @param object the object to check. |
| */ |
| public boolean containsValue(org.omg.CORBA.Object object) |
| { |
| return map.containsValue(object); |
| } |
| |
| /** |
| * Returns the map entry set. |
| * |
| * @return the map entry set, containing the instances of the |
| * Map.Entry. |
| */ |
| public Set entries() |
| { |
| return map.entrySet(); |
| } |
| |
| /** |
| * Get the CORBA object, associated with the given name. |
| * |
| * @param name the name. |
| * |
| * @return the associated object, null if none. |
| */ |
| public org.omg.CORBA.Object get(NameComponent name) |
| { |
| return (org.omg.CORBA.Object) map.get(name); |
| } |
| |
| /** |
| * Put the given GIOP object, specifying the given name as a key. |
| * Remove all pre - existing mappings for the given name and object. |
| * |
| * @param name the name. |
| * @param object |
| */ |
| public void rebind(NameComponent name, org.omg.CORBA.Object object) |
| throws InvalidName |
| { |
| // Remove the existing mapping for the given name, if present. |
| remove(name); |
| |
| Iterator iter = entries().iterator(); |
| Map.Entry item; |
| |
| // Remove the existing mapping for the given object, if present. |
| while (iter.hasNext()) |
| { |
| item = (Map.Entry) iter.next(); |
| if (item.getValue().equals(object)) |
| iter.remove(); |
| } |
| |
| map.put(name, object); |
| } |
| |
| /** |
| * Removes the given name, if present. |
| * |
| * @param name a name to remove. |
| */ |
| public void remove(NameComponent name) |
| { |
| map.remove(name); |
| } |
| |
| /** |
| * Get the size of the map. |
| */ |
| public int size() |
| { |
| return map.size(); |
| } |
| } |