JDK8/Java8源码在线阅读

/*
 * Copyright (c) 1999, 2004, 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
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 */

package javax.naming;

/**
  * This class represents a Reference whose contents is a name, called the link name,
  * that is bound to an atomic name in a context.
  *<p>
  * The name is a URL, or a name to be resolved relative to the initial
  * context, or if the first character of the name is ".", the name
  * is relative to the context in which the link is bound.
  *<p>
  * Normal resolution of names in context operations always follow links.
  * Resolution of the link name itself may cause resolution to pass through
  * other  links. This gives rise to the possibility of a cycle of links whose
  * resolution could not terminate normally. As a simple means to avoid such
  * non-terminating resolutions, service providers may define limits on the
  * number of links that may be involved in any single operation invoked
  * by the caller.
  *<p>
  * A LinkRef contains a single StringRefAddr, whose type is "LinkAddress",
  * and whose contents is the link name. The class name field of the
  * Reference is that of this (LinkRef) class.
  *<p>
  * LinkRef is bound to a name using the normal Context.bind()/rebind(), and
  * DirContext.bind()/rebind(). Context.lookupLink() is used to retrieve the link
  * itself if the terminal atomic name is bound to a link.
  *<p>
  * Many naming systems support a native notion of link that may be used
  * within the naming system itself. JNDI does not specify whether
  * there is any relationship between such native links and JNDI links.
  *<p>
  * A LinkRef instance is not synchronized against concurrent access by multiple
  * threads. Threads that need to access a LinkRef instance concurrently should
  * synchronize amongst themselves and provide the necessary locking.
  *
  * @author Rosanna Lee
  * @author Scott Seligman
  *
  * @see LinkException
  * @see LinkLoopException
  * @see MalformedLinkException
  * @see Context#lookupLink
  * @since 1.3
  */

  /*<p>
  * The serialized form of a LinkRef object consists of the serialized
  * fields of its Reference superclass.
  */

public class LinkRef extends Reference {
    /* code for link handling */
    static final String linkClassName = LinkRef.class.getName();
    static final String linkAddrType = "LinkAddress";

    /**
      * Constructs a LinkRef for a name.
      * @param linkName The non-null name for which to create this link.
      */
    public LinkRef(Name linkName) {
        super(linkClassName, new StringRefAddr(linkAddrType, linkName.toString()));
    }

    /**
      * Constructs a LinkRef for a string name.
      * @param linkName The non-null name for which to create this link.
      */
    public LinkRef(String linkName) {
        super(linkClassName, new StringRefAddr(linkAddrType, linkName));
    }

    /**
      * Retrieves the name of this link.
      *
      * @return The non-null name of this link.
      * @exception MalformedLinkException If a link name could not be extracted
      * @exception NamingException If a naming exception was encountered.
      */

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