Java by API/javax.naming.ldap/PagedResultsControl

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new PagedResultsControl(int pageSize, byte[] cookie, boolean criticality)

   <source lang="java">
  

/*

* Copyright (c) 1995 - 2008 Sun Microsystems, Inc.  All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
*   - Redistributions of source code must retain the above copyright
*     notice, this list of conditions and the following disclaimer.
*
*   - Redistributions in binary form must reproduce the above copyright
*     notice, this list of conditions and the following disclaimer in the
*     documentation and/or other materials provided with the distribution.
*
*   - Neither the name of Sun Microsystems nor the names of its
*     contributors may be used to endorse or promote products derived
*     from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

import java.io.IOException; import java.util.Hashtable; import javax.naming.Context; import javax.naming.NamingEnumeration; import javax.naming.NamingException; import javax.naming.directory.SearchControls; import javax.naming.directory.SearchResult; import javax.naming.ldap.Control; import javax.naming.ldap.InitialLdapContext; import javax.naming.ldap.LdapContext; import javax.naming.ldap.PagedResultsControl; import javax.naming.ldap.PagedResultsResponseControl; /**

* Shows how a paged search can be performed using the PagedResultsControl API
*/

class PagedSearch {

 public static void main(String[] args) {
   Hashtable<String, Object> env = new Hashtable<String, Object>(11);
   env
       .put(Context.INITIAL_CONTEXT_FACTORY,
           "com.sun.jndi.ldap.LdapCtxFactory");
   /* Specify host and port to use for directory service */
   env.put(Context.PROVIDER_URL,
       "ldap://localhost:389/ou=People,o=JNDITutorial");
   try {
     LdapContext ctx = new InitialLdapContext(env, null);
     // Activate paged results
     int pageSize = 5;
     byte[] cookie = null;
     ctx.setRequestControls(new Control[] { new PagedResultsControl(pageSize,
         Control.NONCRITICAL) });
     int total;
     do {
       /* perform the search */
       NamingEnumeration results = ctx.search("", "(objectclass=*)",
           new SearchControls());
       /* for each entry print out name + all attrs and values */
       while (results != null && results.hasMore()) {
         SearchResult entry = (SearchResult) results.next();
         System.out.println(entry.getName());
       }
       // Examine the paged results control response
       Control[] controls = ctx.getResponseControls();
       if (controls != null) {
         for (int i = 0; i < controls.length; i++) {
           if (controls[i] instanceof PagedResultsResponseControl) {
             PagedResultsResponseControl prrc = (PagedResultsResponseControl) controls[i];
             total = prrc.getResultSize();
             if (total != 0) {
               System.out.println("(total : " + total);
             } else {
               System.out.println("(total: unknown)");
             }
             cookie = prrc.getCookie();
           }
         }
       } else {
         System.out.println("No controls were sent from the server");
       }
       ctx.setRequestControls(new Control[] { new PagedResultsControl(
           pageSize, cookie, Control.CRITICAL) });
     } while (cookie != null);
     ctx.close();
   } catch (NamingException e) {
     System.err.println("PagedSearch failed.");
     e.printStackTrace();
   } catch (IOException ie) {
     System.err.println("PagedSearch failed.");
     ie.printStackTrace();
   }
 }

}


 </source>