package schematest;

import javax.naming.NamingException;
import javax.naming.directory.Attribute;
import javax.naming.directory.Attributes;
import javax.naming.directory.DirContext;
import javax.naming.directory.InitialDirContext;

/**
 * Lists all required attributes for an entry of an object class. Iteration
 * includes superclasses.
 * 
 * Requires a valid jndi.properties to run. 
 * Intended to demonstrate JIRA DIREVE-227
 * 
 * @author szoerner
 */
public class RequiredAttributesForAnEntry
{
    public static void main(String[] args) throws NamingException
    {

        InitialDirContext ctx = new InitialDirContext();
        DirContext schema = ctx.getSchema("");
        DirContext allClasses = (DirContext) schema.lookup("ClassDefinition");
        String oc = "person";
        do {
            Attributes attrs = allClasses.getAttributes(oc);
            Attribute must = attrs.get("MUST");
            if (must != null) {
                for (int i = 0; i < must.size(); ++i) {
                    System.out.println(oc + " requires " + must.get(i));
                }
            }
            Attribute sup = attrs.get("SUP");
            oc = (String) ((sup != null) ? sup.get() : null);
        } while (oc != null);
    }
}