entry.put(new BasicAttribute("cn", user.getName()));
        entry.put(new BasicAttribute("userPassword", user.getOriginalPassword()));

        OptionalUtil.ofNullable(user.getSurname()).filter(StringUtil::isNotBlank)
                .ifPresent(s -> entry.put(new BasicAttribute(fessConfig.getLdapAttrSurname(), s)));

import java.util.concurrent.ConcurrentHashMap;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
import java.util.stream.Stream;

import javax.naming.directory.Attribute;
import javax.naming.directory.BasicAttribute;

import org.codelibs.core.exception.ClassNotFoundRuntimeException;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.core.misc.Pair;
import org.codelibs.core.misc.Tuple3;