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118 lines
3.0 KiB
118 lines
3.0 KiB
/*
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* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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package java.rmi.activation;
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import java.rmi.server.UID;
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/**
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* The identifier for a registered activation group serves several
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* purposes: <ul>
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* <li>identifies the group uniquely within the activation system, and
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* <li>contains a reference to the group's activation system so that the
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* group can contact its activation system when necessary.</ul><p>
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*
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* The <code>ActivationGroupID</code> is returned from the call to
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* <code>ActivationSystem.registerGroup</code> and is used to identify
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* the group within the activation system. This group id is passed
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* as one of the arguments to the activation group's special constructor
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* when an activation group is created/recreated.
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*
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* @author Ann Wollrath
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* @see ActivationGroup
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* @see ActivationGroupDesc
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* @since 1.2
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*/
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public class ActivationGroupID implements java.io.Serializable {
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/**
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* @serial The group's activation system.
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*/
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private ActivationSystem system;
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/**
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* @serial The group's unique id.
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*/
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private UID uid = new UID();
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/** indicate compatibility with the Java 2 SDK v1.2 version of class */
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private static final long serialVersionUID = -1648432278909740833L;
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/**
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* Constructs a unique group id.
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*
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* @param system the group's activation system
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* @throws UnsupportedOperationException if and only if activation is
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* not supported by this implementation
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* @since 1.2
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*/
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public ActivationGroupID(ActivationSystem system) {
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this.system = system;
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}
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/**
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* Returns the group's activation system.
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* @return the group's activation system
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* @since 1.2
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*/
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public ActivationSystem getSystem() {
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return system;
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}
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/**
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* Returns a hashcode for the group's identifier. Two group
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* identifiers that refer to the same remote group will have the
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* same hash code.
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*
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* @see java.util.Hashtable
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* @since 1.2
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*/
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public int hashCode() {
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return uid.hashCode();
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}
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/**
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* Compares two group identifiers for content equality.
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* Returns true if both of the following conditions are true:
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* 1) the unique identifiers are equivalent (by content), and
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* 2) the activation system specified in each
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* refers to the same remote object.
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*
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* @param obj the Object to compare with
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* @return true if these Objects are equal; false otherwise.
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* @see java.util.Hashtable
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* @since 1.2
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*/
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public boolean equals(Object obj) {
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if (this == obj) {
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return true;
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} else if (obj instanceof ActivationGroupID) {
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ActivationGroupID id = (ActivationGroupID)obj;
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return (uid.equals(id.uid) && system.equals(id.system));
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} else {
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return false;
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}
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}
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}
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