/*
* Copyright (C) 2009 eXo Platform SAS.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.exoplatform.services.organization.ldap;
import org.exoplatform.commons.utils.PageList;
import org.exoplatform.services.ldap.LDAPService;
import org.exoplatform.services.log.ExoLogger;
import org.exoplatform.services.log.Log;
import org.exoplatform.services.organization.User;
import java.util.ArrayList;
import java.util.List;
import javax.naming.NameNotFoundException;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.OperationNotSupportedException;
import javax.naming.directory.SearchControls;
import javax.naming.directory.SearchResult;
import javax.naming.ldap.Control;
import javax.naming.ldap.LdapContext;
import javax.naming.ldap.PagedResultsControl;
import javax.naming.ldap.PagedResultsResponseControl;
import javax.naming.ldap.SortControl;
/**
* Created by VietSpider Studio Author : Nhu Dinh Thuan nhudinhthuan@yahoo.com
* Dec 7, 2005, @version andrew00x $
* @deprecated
*/
public class LDAPUserPageList extends PageList
{
private String searchBase;
private String filter;
private LDAPService ldapService;
private LDAPAttributeMapping ldapAttrMapping;
private static final Log LOG = ExoLogger.getLogger("exo.core.component.organization.ldap.LDAPUserPageList");
static boolean SEARCH_CONTROL = Control.NONCRITICAL;
public LDAPUserPageList(LDAPAttributeMapping ldapAttrMapping, LDAPService ldapService, String searchBase,
String filter, int pageSize) throws Exception
{
super(pageSize);
this.ldapAttrMapping = ldapAttrMapping;
this.ldapService = ldapService;
this.searchBase = searchBase;
this.filter = filter;
try
{
int size = this.getResultSize();
setAvailablePage(size);
}
catch (NameNotFoundException e)
{
LOG.warn("Cannot set the page size while creating a LDAPUserPageList, no page size will be used", e);
setAvailablePage(0);
}
catch (OperationNotSupportedException e)
{
LOG.warn("Cannot set the page size while creating a LDAPUserPageList, no page size will be used", e);
setAvailablePage(0);
}
}
/**
* {@inheritDoc}
*/
@Override
protected void populateCurrentPage(int page) throws Exception
{
List<User> users = new ArrayList<User>();
PagedResultsControl prc = new PagedResultsControl(getPageSize(), Control.NONCRITICAL);
String[] keys = {ldapAttrMapping.userUsernameAttr};
SortControl sctl = new SortControl(keys, SEARCH_CONTROL);
LdapContext ctx = ldapService.getLdapContext();
try
{
NamingEnumeration<SearchResult> results = null;
for (int err = 0;; err++)
{
users.clear();
try
{
ctx.setRequestControls(new Control[]{sctl, prc});
SearchControls constraints = new SearchControls();
constraints.setSearchScope(SearchControls.SUBTREE_SCOPE);
byte[] cookie = null;
int counter = 0;
do
{
counter++;
results = ctx.search(searchBase, filter, constraints);
while (results != null && results.hasMore())
{
SearchResult result = results.next();
if (counter == page)
users.add(ldapAttrMapping.attributesToUser(result.getAttributes()));
}
Control[] responseControls = ctx.getResponseControls();
if (responseControls != null)
{
for (int z = 0; z < responseControls.length; z++)
{
if (responseControls[z] instanceof PagedResultsResponseControl)
cookie = ((PagedResultsResponseControl)responseControls[z]).getCookie();
}
}
ctx
.setRequestControls(new Control[]{new PagedResultsControl(getPageSize(), cookie, Control.CRITICAL)});
}
while (cookie != null);
this.currentListPage_ = users;
return;
}
catch (NamingException e)
{
if (BaseDAO.isConnectionError(e) && err < BaseDAO.getMaxConnectionError())
{
ldapService.release(ctx);
ctx = ldapService.getLdapContext(true);
}
else
throw e;
}
finally
{
if (results != null)
results.close();
}
}
}
finally
{
ldapService.release(ctx);
}
}
private int getResultSize() throws Exception
{
return getAll().size();
}
/**
* {@inheritDoc}
*/
@Override
@SuppressWarnings("unchecked")
public List getAll() throws Exception
{
LdapContext ctx = ldapService.getLdapContext();
List<User> users = new ArrayList<User>();
try
{
NamingEnumeration<SearchResult> results = null;
for (int err = 0;; err++)
{
users.clear();
try
{
SearchControls constraints = new SearchControls();
String[] returnedAtts = {ldapAttrMapping.userUsernameAttr};
constraints.setReturningAttributes(returnedAtts);
constraints.setSearchScope(SearchControls.SUBTREE_SCOPE);
results = ctx.search(searchBase, filter, constraints);
while (results != null && results.hasMore())
{
SearchResult result = results.next();
users.add(ldapAttrMapping.attributesToUser(result.getAttributes()));
}
return users;
}
catch (NamingException e)
{
if (BaseDAO.isConnectionError(e) && err < 1)
{
ldapService.release(ctx);
ctx = ldapService.getLdapContext(true);
}
else
throw e;
}
finally
{
if (results != null)
results.close();
}
}
}
finally
{
ldapService.release(ctx);
}
}
}