| /* |
| * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package java.rmi.activation; |
| |
| import java.rmi.server.UID; |
| |
| /** |
| * The identifier for a registered activation group serves several |
| * purposes: <ul> |
| * <li>identifies the group uniquely within the activation system, and |
| * <li>contains a reference to the group's activation system so that the |
| * group can contact its activation system when necessary.</ul><p> |
| * |
| * The <code>ActivationGroupID</code> is returned from the call to |
| * <code>ActivationSystem.registerGroup</code> and is used to identify |
| * the group within the activation system. This group id is passed |
| * as one of the arguments to the activation group's special constructor |
| * when an activation group is created/recreated. |
| * |
| * @author Ann Wollrath |
| * @see ActivationGroup |
| * @see ActivationGroupDesc |
| * @since 1.2 |
| */ |
| public class ActivationGroupID implements java.io.Serializable { |
| /** |
| * @serial The group's activation system. |
| */ |
| private ActivationSystem system; |
| |
| /** |
| * @serial The group's unique id. |
| */ |
| private UID uid = new UID(); |
| |
| /** indicate compatibility with the Java 2 SDK v1.2 version of class */ |
| private static final long serialVersionUID = -1648432278909740833L; |
| |
| /** |
| * Constructs a unique group id. |
| * |
| * @param system the group's activation system |
| * @throws UnsupportedOperationException if and only if activation is |
| * not supported by this implementation |
| * @since 1.2 |
| */ |
| public ActivationGroupID(ActivationSystem system) { |
| this.system = system; |
| } |
| |
| /** |
| * Returns the group's activation system. |
| * @return the group's activation system |
| * @since 1.2 |
| */ |
| public ActivationSystem getSystem() { |
| return system; |
| } |
| |
| /** |
| * Returns a hashcode for the group's identifier. Two group |
| * identifiers that refer to the same remote group will have the |
| * same hash code. |
| * |
| * @see java.util.Hashtable |
| * @since 1.2 |
| */ |
| public int hashCode() { |
| return uid.hashCode(); |
| } |
| |
| /** |
| * Compares two group identifiers for content equality. |
| * Returns true if both of the following conditions are true: |
| * 1) the unique identifiers are equivalent (by content), and |
| * 2) the activation system specified in each |
| * refers to the same remote object. |
| * |
| * @param obj the Object to compare with |
| * @return true if these Objects are equal; false otherwise. |
| * @see java.util.Hashtable |
| * @since 1.2 |
| */ |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } else if (obj instanceof ActivationGroupID) { |
| ActivationGroupID id = (ActivationGroupID)obj; |
| return (uid.equals(id.uid) && system.equals(id.system)); |
| } else { |
| return false; |
| } |
| } |
| } |