Fix LDAPSession.countEntries() warning with page results

The method LDAPSession.countEntries() is updated to use raw paged
search. It was counting the object associated with the retrieved ldap
query but the query in this case retrieve only objectClass so the
object mapping was failing.

The count was correct but there were additional logs for the mapping
error and it requires extra time for object mapping.

Assisted-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: fmarco76

base/server/src/main/java/com/netscape/cmscore/dbs/LDAPSession.java

@@ -541,15 +541,47 @@ public DBSearchResults pagedSearch(String base, String filter, String[] sortKeys
     @Override
     public <T extends IDBObj> int countEntries(Class<T> classResults, String base, String filter, int timeLimit)
             throws EBaseException {
-        String[] attrs = {"objectclass"};
-        DBPagedSearch<T> search = createPagedSearch(classResults,  base, filter, attrs, (String) null);
-        RecordPagedList<T> list = new RecordPagedList<>(search);
-        int count = 0;
-        for(T c: list) {
-            count++;
-        }
+        try {
+            String ldapfilter = dbSubsystem.getRegistry().getFilter(filter);
+            logger.info("LDAPSession.countEntries(): Searching {} for {}", base, ldapfilter);
+
+            LDAPSearchConstraints cons = new LDAPSearchConstraints();
+            if (timeLimit > 0) {
+                cons.setServerTimeLimit(timeLimit);
+            }
+
+            String[] attrs = {"objectclass"};
+            LDAPPagedResultsControl pagecon = new LDAPPagedResultsControl(false, MAX_PAGED_SEARCH_SIZE);
+            int count = 0;
+            byte[] cookie;
 
-        return count;
+            do {
+                cons.setServerControls(pagecon);
+                LDAPSearchResults res = mConn.search(base,
+                        LDAPv3.SCOPE_ONE, ldapfilter, attrs, false, cons);
+                while (res.hasMoreElements()) {
+                    res.next();
+                    count++;
+                }
+                cookie = null;
+                for (LDAPControl c : res.getResponseControls()) {
+                    if (c instanceof LDAPPagedResultsControl resC) {
+                        cookie = resC.getCookie();
+                    }
+                }
+                if (cookie != null) {
+                    pagecon = new LDAPPagedResultsControl(false, MAX_PAGED_SEARCH_SIZE, cookie);
+                }
+            } while (cookie != null);
+
+            return count;
+
+        } catch (LDAPException e) {
+            if (e.getLDAPResultCode() == LDAPException.UNAVAILABLE)
+                throw new DBNotAvailableException(
+                        CMS.getUserMessage("CMS_DBS_INTERNAL_DIR_UNAVAILABLE"));
+            throw new DBException("Unable to search LDAP record: " + e.getMessage(), e);
+        }
     }
 
     @Override