Adding new attribute to LDAP entry using JNDI

Using JNDI it is possible to add new attributes to existing LDAP entries.In a previous chapter we have seen how to create LDAP entry and managing it using Apache Directory Studio. In the just previous chapters we have seen how to fetch attributes of LDAP entries and how to update attributes of LDAP entries. In this chapter we are discussing the way by which Java adding new attribute to LDAP entry using JNDI.We should follow the steps till step 15  described in the previous chapter. Now right click on the object explorer and select the New Attribute option.Note the available attribute types.Please don’t proceed further .Now our intention is to add attribute from code. So we are taking the attribute type ‘displayName‘.Now we got a property to add value to it. So please close the  new Attribute window . Now  let us see the Java code shown below.

Adding new attribute to LDAP entry using JNDI

AddAttributeSample.java

import java.util.Properties;
import javax.naming.Context;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.directory.Attribute;
import javax.naming.directory.Attributes;
import javax.naming.directory.BasicAttribute;
import javax.naming.directory.DirContext;
import javax.naming.directory.InitialDirContext;
import javax.naming.directory.ModificationItem;

public class AddAttributeSample {

public AddAttributeSample() {

}

public void addEntry() {
Properties properties = new Properties();
properties.put(Context.INITIAL_CONTEXT_FACTORY,
"com.sun.jndi.ldap.LdapCtxFactory");
properties.put(Context.PROVIDER_URL, "ldap://localhost:10389");
properties.put(Context.SECURITY_PRINCIPAL, "uid=admin,ou=system");
properties.put(Context.SECURITY_CREDENTIALS, "secret");
try {
DirContext context = new InitialDirContext(properties);
Attributes attributes = context
.getAttributes("employeeNumber=112233,ou=users,ou=system");
System.out.println("Before adding new attribute..");
displayAttributes(attributes);
System.out.println("Inserting new attribute : " + "");
Attribute attribute = new BasicAttribute("displayName", "Bijoy");
ModificationItem[] item = new ModificationItem[1];
item[0] = new ModificationItem(DirContext.ADD_ATTRIBUTE, attribute);
attributes.put(attribute);

context.modifyAttributes(
"employeeNumber=112233,ou=users,ou=system", item);
System.out.println("After addition of new attribute..");
Attributes attributes1 = context
.getAttributes("employeeNumber=112233,ou=users,ou=system");
displayAttributes(attributes1);

} catch (NamingException e) {
e.printStackTrace();
}
}

public void displayAttributes(Attributes attributes) {
if (attributes != null) {
try {
for (NamingEnumeration e = attributes.getAll(); e.hasMore();) {
Attribute attr = (Attribute) e.next();
System.out.println("Attribute name: " + attr.getID());

for (NamingEnumeration n = attr.getAll(); n.hasMore(); System.out
.println("value: " + n.next()))
;
}
} catch (NamingException e) {
e.printStackTrace();
}
}

}

public static void main(String[] args) {
AddAttributeSample sample = new AddAttributeSample();
sample.addEntry();
}

}

So the code is almost similar to the code of previous discussion.Here we are using the DirContext.ADD_ATTRIBUTE(value = 1) while creating ModificationItem object. There we used DirContext.REPLACE_ATTRIBUTE(value = 2).

Now lets see the output.

Output

Before adding new attribute..

Attribute name: telephoneNumber

value: 99999999999

Attribute name: objectClass

value: organizationalPerson

value: person

value: inetOrgPerson

value: top

Attribute name: employeeNumber

value: 112233

Attribute name: sn

value: Bijoy

Attribute name: cn

value: Bijoy

Inserting new attribute :

After addition of new attribute..

Attribute name: telephoneNumber

value: 99999999999

Attribute name: displayName

value: Bijoy

Attribute name: objectClass

value: organizationalPerson

value: person

value: inetOrgPerson

value: top

Attribute name: employeeNumber

value: 112233

Attribute name: sn

value: Bijoy

Attribute name: cn

value: Bijoy

See also:

JNDI overview

Naming service example

Accessing LDAP using JNDI

Updating attributes of LDAP entry

Deleting attribute from LDAP entry

Adding LDAP entry using JNDI

Deleting LDAP entry using JNDI

Displaying user entries in LDAP using JNDI

2 thoughts on “Adding new attribute to LDAP entry using JNDI

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  2. helped me a lot

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