[Search] - How to make this request ?

[dedeloux]

Hello,

For the connection with my directory, i use spring-ldap.
I've got an OU: People which contains all the webmaster and i've got another OU:group which contains all the sites each webmaster can administrate.

My problem is i don't know how to get all the sites a webmaster can administrate.

To get a webmaster i'll do this :

	  public Webmaster getWebmaster(String ou,String login) {

		  Name dn = buildDn(ou,login);
		  Webmaster webmaster = null;
		  try {
			  webmaster = (Webmaster)ldapTemplate.lookup(dn, new WebmasterContextMapper());
		  }
		  catch (Exception e){
			  log.error("getWebmaster"+e);
		  }
		 return webmaster;

	  }

	  protected Name buildDn(String ou,String login) {
		  DistinguishedName dn = new DistinguishedName();
		  dn.add("ou", ou);
		  dn.add("uid", login);

		  return dn;
	  }

	  private static class WebmasterContextMapper implements ContextMapper {
		  public Object mapFromContext(Object ctx) {
			  DirContextAdapter context = (DirContextAdapter)ctx;
			  Webmaster webmaster = new Webmaster();
			  webmaster.setLogin(context.getStringAttribute("uid"));
			  //webmaster.setPassword(context.getStringAttribute("userPassword"));
			  webmaster.setRoles(context.getStringAttributes("businessCategory"));
			  return webmaster;
		  }
	  }

It works fine and i'll want to do the same thing to get all the sites for the webmaster. So I have done that :

	  public String [] getWebmasterSites (String ou, String login){
		  String [] sites = null;
		  Name dn= buildDnSites (ou, login);
		  try {
			  sites = (String [])ldapTemplate.lookup(dn, new WebmasterContextSitesMapper());
		  }
		  catch (Exception e){
			  log.error("getWebmasterSites"+e);
		  }
		  return sites;
	  }

	  protected Name buildDnSites(String ou,String login) {
		  DistinguishedName dn = new DistinguishedName();
		  dn.add("ou", ou);
		  dn.add("memberUid", login);

		  return dn;
	  }

	  private static class WebmasterContextSitesMapper implements ContextMapper {
		  public Object mapFromContext(Object ctx) {
			  DirContextAdapter context = (DirContextAdapter)ctx;
			  String [] sites= context.getStringAttributes("businessCategory");
			  return sites;
		  }
	  }

But it doesn't work . Can somebody help me please ?

Thanks

[rasky]

Could you please be more specific about in which way it doesn't work? It you get an exception please post the stacktrace.

[dedeloux]

Thanks for your reply rasky !

I've got this exception :

"2008-03-28 11:31:53,921 [http-8080-Processor25] ERROR LdapWebmasterDao  - getWebmasterSites org.springframework.ldap.NameNotFoundException: [LDAP: error code 32 - No Such Object]; nested exception is javax.naming.NameNotFoundException: [LDAP: error code 32 - No Such Object]; remaining name 'memberuid=login, ou=group'

But in fact, i don't know how to list all sites to find those i want ...

[dedeloux]

To be more specific, what i want to do is :

Get all the objetcs registered in the OU group
For all objects, search those with a property memberUid ="login"
And then return the "businessCategory" of each site found.

I hope it's more clear now

Thanks for your help.

[rasky]

Ah, right. You'll want to do a search rather than a lookup. Your code would look something similar to this:

public List getWebmasterSites (String ou, String login){
  Filter filter = new EqualsFilter("memberUid", login);
  return ldapTemplate.search("ou=group", filter.encode(), new WebmasterContextSitesMapper());
}

private static class WebmasterContextSitesMapper implements ContextMapper {
  public Object mapFromContext(Object ctx) {
    DirContextAdapter context = (DirContextAdapter)ctx;
    return context.getStringAttribute("businessCategory");
  }
}

This would give you a list of the matching sites.

[dedeloux]

Your solution works well rasky
Thank you very much !

But what is the difference beetwen a lookup and a search ?

[rasky]

The difference lies in the name: A lookup is used to lookup an entry when you know the unique identifier (Distinguished Name, or DN) of the entry in the LDAP tree. A search is used when you don't know the exact identifier but want to search for entries based on a number of criteria. The search criteria are analogous to the 'where' clause in SQL and are specified as a search filter.

A lookup always returns just one entry (since a distinguished name must be unique in the LDAP tree), and trying to lookup a name that is not present in the tree will result in an error. A search however can return any number of entries; including no results if the search filter does not match anything.