When a sort control is used with a paging control, the result set is not sorted.

[trainKing-star]

I used the UnboundID LDAP SDK to access the local OpenDJ server.

    <dependency>
      <groupId>com.unboundid</groupId>
      <artifactId>unboundid-ldapsdk</artifactId>
      <version>6.0.9</version>
    </dependency>

When only the sorting control is used, the sorting can be normally performed.

        final LDAPConnection connection = new LDAPConnection();
        connection.connect("127.0.0.1", 389, 1000);
        connection.bind("uid=test,cn=users,dc=example,dc=com", "test");
        SearchRequest searchRequest ;
        try {
            searchRequest = new SearchRequest("ou=page,ou=test,dc=example,dc=com", SearchScope.SUB, "uid=1*");
            searchRequest.addControl(new ServerSideSortRequestControl(new SortKey("uid", true)));
            SearchResult searchResult = connection.search(searchRequest);
            System.out.println("resultSize: " + searchResult.getEntryCount());
            for (SearchResultEntry searchEntry : searchResult.getSearchEntries()) {
                System.out.println(searchEntry);
            }
        } catch (LDAPException e) {
            throw new RuntimeException(e);
        }

The following result is returned:

resultSize: 1111
SearchResultEntry(dn='uid=1999,ou=page,ou=test
SearchResultEntry(dn='uid=1998,ou=page,ou=test
SearchResultEntry(dn='uid=1997,ou=page,ou=test
SearchResultEntry(dn='uid=1996,ou=page,ou=test
SearchResultEntry(dn='uid=1995,ou=page,ou=test
SearchResultEntry(dn='uid=1994,ou=page,ou=test
SearchResultEntry(dn='uid=1993,ou=page,ou=test
SearchResultEntry(dn='uid=1992,ou=page,ou=test
SearchResultEntry(dn='uid=1991,ou=page,ou=test
SearchResultEntry(dn='uid=1990,ou=page,ou=test
SearchResultEntry(dn='uid=199,ou=page,ou=test
SearchResultEntry(dn='uid=1989,ou=page,ou=test
SearchResultEntry(dn='uid=1988,ou=page,ou=test
SearchResultEntry(dn='uid=1987,ou=page,ou=test
SearchResultEntry(dn='uid=1986,ou=page,ou=test
SearchResultEntry(dn='uid=1985,ou=page,ou=test
SearchResultEntry(dn='uid=1984,ou=page,ou=test
SearchResultEntry(dn='uid=1983,ou=page,ou=test
SearchResultEntry(dn='uid=1982,ou=page,ou=test
SearchResultEntry(dn='uid=1981,ou=page,ou=test
··············································

When the sort control is used with the paging control, the sort is invalid.

        final LDAPConnection connection = new LDAPConnection();
        connection.connect("127.0.0.1", 389, 1000);
        connection.bind("uid=test,cn=users,dc=example,dc=com", "test");
        SearchRequest searchRequest ;
        try {
            searchRequest = new SearchRequest("ou=page,ou=test,dc=example,dc=com", SearchScope.SUB, "uid=1*");
            searchRequest.addControl(new ServerSideSortRequestControl(new SortKey("uid", true)));
            searchRequest.setControls(new SimplePagedResultsControl(10, null));
            SearchResult searchResult = connection.search(searchRequest);
            System.out.println("resultSize: " + searchResult.getEntryCount());
            for (SearchResultEntry searchEntry : searchResult.getSearchEntries()) {
                System.out.println(searchEntry);
            }
        } catch (LDAPException e) {
            throw new RuntimeException(e);
        }

The following result is returned:

resultSize: 10
SearchResultEntry(dn='uid=1,ou=page,ou=test
SearchResultEntry(dn='uid=10,ou=page,ou=test
SearchResultEntry(dn='uid=11,ou=page,ou=test
SearchResultEntry(dn='uid=12,ou=page,ou=test
SearchResultEntry(dn='uid=13,ou=page,ou=test
SearchResultEntry(dn='uid=14,ou=page,ou=test
SearchResultEntry(dn='uid=15,ou=page,ou=test
SearchResultEntry(dn='uid=16,ou=page,ou=test
SearchResultEntry(dn='uid=17,ou=page,ou=test
SearchResultEntry(dn='uid=18,ou=page,ou=test

Does OpenDj support paging after server-side sorting?