Trail: Java Naming and Directory Interface
Lesson: New features in JDK 5.0 and JDK 6

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~~The Java Tutorials have been written for JDK 8.~~Java教程是为JDK 8编写的。~~Examples and practices described in this page don't take advantage of improvements introduced in later releases and might use technology no longer available.~~本页中描述的示例和实践没有利用后续版本中引入的改进，并且可能使用不再可用的技术。
~~See Java Language Changes for a summary of updated language features in Java SE 9 and subsequent releases.~~有关Java SE 9及其后续版本中更新的语言特性的摘要，请参阅Java语言更改。
~~See JDK Release Notes for information about new features, enhancements, and removed or deprecated options for all JDK releases.~~有关所有JDK版本的新功能、增强功能以及已删除或不推荐的选项的信息，请参阅JDK发行说明。

Retrieving Distinguished Name

In the JDK releases prior to 5.0, there is no direct way of obtaining the Distinguished Name (DN) from the search results. The SearchResults.getName() method always returns the name that is relative to the context on which the search is performed. In order to get the absolute, or full name of the search entry some amount of book-keeping is required to track the ancestor contexts. Two new APIs below are added in JDK 5.0 to retrieve the absolute name from the NameClassPair, whenever a search, list, or listBindings operation is performed on a context:

Here is an example that retrieves DNs from an LDAP search:

public static void printSearchEnumeration(NamingEnumeration retEnum) {
         try {
             while (retEnum.hasMore()) {
                 SearchResult sr = (SearchResult) retEnum.next();
                 System.out.println(">>" + sr.getNameInNamespace());
             }
         } catch (NamingException e) {
             e.printStackTrace();
         }
     }

The complete example can be obtained from here. This program generates the output as below:

>>cn=Jon Ruiz, ou=People, o=JNDITutorial
        >>cn=Scott Seligman, ou=People, o=JNDITutorial
        >>cn=Samuel Clemens, ou=People, o=JNDITutorial
        >>cn=Rosanna Lee, ou=People, o=JNDITutorial
        >>cn=Maxine Erlund, ou=People, o=JNDITutorial
        >>cn=Niels Bohr, ou=People, o=JNDITutorial
        >>cn=Uri Geller, ou=People, o=JNDITutorial
        >>cn=Colleen Sullivan, ou=People, o=JNDITutorial
        >>cn=Vinnie Ryan, ou=People, o=JNDITutorial
        >>cn=Rod Serling, ou=People, o=JNDITutorial
        >>cn=Jonathan Wood, ou=People, o=JNDITutorial
        >>cn=Aravindan Ranganathan, ou=People, o=JNDITutorial
        >>cn=Ian Anderson, ou=People, o=JNDITutorial
        >>cn=Lao Tzu, ou=People, o=JNDITutorial
        >>cn=Don Knuth, ou=People, o=JNDITutorial
        >>cn=Roger Waters, ou=People, o=JNDITutorial
        >>cn=Ben Dubin, ou=People, o=JNDITutorial
        >>cn=Spuds Mackenzie, ou=People, o=JNDITutorial
        >>cn=John Fowler, ou=People, o=JNDITutorial
        >>cn=Londo Mollari, ou=People, o=JNDITutorial
        >>cn=Ted Geisel, ou=People,o=JNDITutorial

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