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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><TITLE>NullMembershipService (Project JXTA J2SE)</TITLE><META NAME="keywords" CONTENT="net.jxta.impl.membership.NullMembershipService class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="NullMembershipService (Project JXTA J2SE)";}</SCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=3 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A 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| FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">net.jxta.impl.membership</FONT><BR>Class NullMembershipService</H2><PRE>java.lang.Object <IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><B>net.jxta.impl.membership.NullMembershipService</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../net/jxta/membership/MembershipService.html" title="interface in net.jxta.membership">MembershipService</A>, <A HREF="../../../../net/jxta/platform/Module.html" title="interface in net.jxta.platform">Module</A>, <A HREF="../../../../net/jxta/service/Service.html" title="interface in net.jxta.service">Service</A></DD></DL><HR><DL><DT>public class <B>NullMembershipService</B><DT>extends java.lang.Object<DT>implements <A HREF="../../../../net/jxta/membership/MembershipService.html" title="interface in net.jxta.membership">MembershipService</A></DL><P>The Null Membership Service provides a Membership Service implementation which is intended to be used with peer groups which require no real authentication. <p/>The null service allows you to claim any identity within the peergroup, but for peergroups which use this Membership Service method, it is likely that the identity is used only for informational purposes. <p/>A default credential with the name "nobody" is automatically available authenticated by this service.<P><P><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><A NAME="nested_class_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Nested Class Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static class</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../net/jxta/impl/membership/NullMembershipService.NullAuthenticator.html" title="class in net.jxta.impl.membership">NullMembershipService.NullAuthenticator</A></B></CODE><BR> Authenticator Class for the Null Membership Service. </TD></TR></TABLE> <!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Field Summary</B></FONT></TD></TR></TABLE> <A NAME="fields_inherited_from_class_net.jxta.platform.Module"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from interface net.jxta.platform.<A HREF="../../../../net/jxta/platform/Module.html" title="interface in net.jxta.platform">Module</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../../net/jxta/platform/Module.html#START_AGAIN_PROGRESS">START_AGAIN_PROGRESS</A>, <A HREF="../../../../net/jxta/platform/Module.html#START_AGAIN_STALLED">START_AGAIN_STALLED</A>, <A HREF="../../../../net/jxta/platform/Module.html#START_OK">START_OK</A></CODE></TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../net/jxta/impl/membership/NullMembershipService.html#NullMembershipService()">NullMembershipService</A></B>()</CODE><BR> default constructor. </TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../net/jxta/membership/Authenticator.html" title="interface in net.jxta.membership">Authenticator</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../net/jxta/impl/membership/NullMembershipService.html#apply(net.jxta.credential.AuthenticationCredential)">apply</A></B>(<A HREF="../../../../net/jxta/credential/AuthenticationCredential.html" title="class in net.jxta.credential">AuthenticationCredential</A> application)</CODE><BR> Request the necessary credentials to join the group with which this service is associated.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.util.Enumeration</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../net/jxta/impl/membership/NullMembershipService.html#getAuthCredentials()">getAuthCredentials</A></B>()</CODE><BR> Returns the current credentials for this peer. The elements of the enumeration are all of types derived from <A HREF="../../../../net/jxta/credential/AuthenticationCredential.html" title="class in net.jxta.credential"><CODE>AuthenticationCredential</CODE></A></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.util.Enumeration</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../net/jxta/impl/membership/NullMembershipService.html#getCurrentCredentials()">getCurrentCredentials</A></B>()</CODE><BR> Returns the current credentials for this peer. The elements of the enumeration are all of types derived from "Credential". Before <A HREF="../../../../net/jxta/membership/MembershipService.html#join(net.jxta.membership.Authenticator)"><CODE>join()</CODE></A> or after <A HREF="../../../../net/jxta/membership/MembershipService.html#resign()"><CODE>MembershipService.resign()</CODE></A> are called, this enumeration will consist of a single element, a default credential which is usually has the identity "nobody". This credential always exists, but likely offers few, if any, privledges within this group.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../net/jxta/credential/Credential.html" title="interface in net.jxta.credential">Credential</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../net/jxta/impl/membership/NullMembershipService.html#getDefaultCredential()">getDefaultCredential</A></B>()</CODE><BR> Returns the default credential for this peer. This is normally the "nobody" credential which is provided by default.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../net/jxta/document/Advertisement.html" title="class in net.jxta.document">Advertisement</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../net/jxta/impl/membership/NullMembershipService.html#getImplAdvertisement()">getImplAdvertisement</A></B>()</CODE><BR> Returns the advertisment for this service.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../net/jxta/service/Service.html" title="interface in net.jxta.service">Service</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../net/jxta/impl/membership/NullMembershipService.html#getInterface()">getInterface</A></B>()</CODE><BR> Service objects are not manipulated directly to protect usage of the service. A Service interface is returned to access the service methods.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>(package private) <A HREF="../../../../net/jxta/peergroup/PeerGroup.html" title="interface in net.jxta.peergroup">PeerGroup</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../net/jxta/impl/membership/NullMembershipService.html#getPeerGroup()">getPeerGroup</A></B>()</CODE><BR> {@inheritDoc}</TD>⌨️ 快捷键说明
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