Transform LDAP attributes to be properly mapped to Liferay fields

Issue

• I need to transform some attributes from my LDAP to be properly mapped with the Liferay fields.

Environment

• Liferay DXP 7.3

Resolution

• We can define mappings from LDAP attributes to Liferay fields in the Liferay LDAP server configuration.
• Usually, these attributes can be mapped one by one from LDAP server to Liferay fields and the values are loaded directly. However, sometimes some values must be transformed to be imported properly.
• You can develop a module, based on the DefaultAttributesTransformer class, to create our own AttributesTransformer. Here is an example you can follow to do it:
  1. Create a new service module (Creating-a-Custom-OSGi-Service).
  2. Add a new class, MyOwnAttributesTransformer, for example.
  3. Copy the content of DefaultAttributesTransformer into your class, like this:

     package myownattributestransformer;
     
     import com.liferay.portal.kernel.security.ldap.AttributesTransformer;
     
     import javax.naming.directory.Attributes;
     
     import org.osgi.service.component.annotations.Component;
     
     @Component(immediate = true, property = {"service.ranking:Integer=100"}, service = AttributesTransformer.class)
     public class MyOwnAttributesTransformer implements AttributesTransformer {
     
       @Override
       public Attributes transformGroup(Attributes attributes) {
         System.out.println("MyOwnAttributesTransformer > Here my attributes transformations for groups");
         return attributes;
       }
     
       @Override
       public Attributes transformUser(Attributes attributes) {
         System.out.println("MyOwnAttributesTransformer > Here my attributes transformations for users");
         return attributes;
       }
     
     }

  4. Define a higher Service Ranking (i.e. service.ranking:Integer=100) as the Creating-a-Custom-OSGi-Service article says.
  5. Add your attributes trasnformations inside of transformGroup or transformUser, as needed.
  6. Compile and deploy your module.