Query for below issue - model-view-controller

Question

I want to insert one row for each unique b_id if the b_id doest have any row with data = x. The value for the new row will be same for
b_id, b_name but the value for data will be x and sequence will be 1 and existing sequence for that b_id should be updated by 1
DECLARE
CURSOR b_id_cursor IS
SELECT DISTINCT b_id
FROM md_details;
BEGIN
FOR b_id_rec IN b_id_cursor LOOP
IF NOT EXISTS (SELECT 1 FROM md_details WHERE b_id = b_id_rec.b_id AND data = 'INIT') THEN
INSERT INTO md_details (b_id, b_name, data, sequence)
SELECT b_id, b_name, 'INIT', 1
FROM md_details
WHERE b_id = b_id_rec.b_id
AND ROWNUM = 1;
UPDATE md_details
SET sequence = sequence + 1
WHERE b_id = b_id_rec.b_id;
END IF;
END LOOP;
END;

Answer 1

import java.util.ArrayList;
import java.util.List;
import javax.naming.directory.DirContext;
import javax.naming.directory.SearchControls;
public class AdGroupFinder {
private DirContext dirContext;
public AdGroupFinder(DirContext dirContext) {
this.dirContext = dirContext;
}
public List<String> getAdGroupsForUser(String userName) {
List<String> adGroups = new ArrayList<>();
try {
SearchControls searchControls = new SearchControls();
searchControls.setSearchScope(SearchControls.SUBTREE_SCOPE);
String searchFilter = "(&(objectClass=user)(sAMAccountName=" + userName + "))";
javax.naming.NamingEnumeration<javax.naming.directory.SearchResult> results =
dirContext.search("", searchFilter, searchControls);
while (results.hasMoreElements()) {
javax.naming.directory.SearchResult searchResult = results.nextElement();
javax.naming.directory.Attribute memberOfAttribute = searchResult.getAttributes().get("memberOf");
for (int i = 0; i < memberOfAttribute.size(); i++) {
String groupDN = (String) memberOfAttribute.get(i);
adGroups.add(groupDN.substring(0, groupDN.indexOf(",")));
}
}
} catch (javax.naming.NamingException e) {
e.printStackTrace();
}
return adGroups;
}
public List<String> getUsersForAdGroup(String adGroupName) {
List<String> users = new ArrayList<>();
try {
SearchControls searchControls = new SearchControls();
searchControls.setSearchScope(SearchControls.SUBTREE_SCOPE);
String searchFilter = "(&(objectClass=user)(memberOf=CN=" + adGroupName + ",OU=Groups,DC=example,DC=com))";
javax.naming.NamingEnumeration<javax.naming.directory.SearchResult> results =
dirContext.search("", searchFilter, searchControls);
while (results.hasMoreElements()) {
javax.naming.directory.SearchResult searchResult = results.nextElement();
javax.naming.directory.Attribute sAMAccountNameAttribute = searchResult.getAttributes().get("sAMAccountName");
users.add((String) sAMAccountNameAttribute.get());
}
} catch (javax.naming.NamingException e) {
e.printStackTrace();
}
return users;
}
}