//                                                                             =======
    @Override
    public UserInfoDbm asDBMeta() {
        return UserInfoDbm.getInstance();
    }

    @Override
    public String asTableDbName() {
        return "user_info";
    }

    @Override
    public boolean hasSpecifiedColumn() {
        return _specification != null;
    }

    //                                                                             =======
    @Override
    public GroupDbm asDBMeta() {
        return GroupDbm.getInstance();
    }

    @Override
    public String asTableDbName() {
        return "group";
    }

    @Override
    public boolean hasSpecifiedColumn() {
        return _specification != null;
    }

    private static final DuplicateHostDbm _instance = new DuplicateHostDbm();

    private DuplicateHostDbm() {
    }

    public static DuplicateHostDbm getInstance() {
        return _instance;
    }

    // ===================================================================================
    //                                                                       Current DBDef

    private static final RelatedQueryDbm _instance = new RelatedQueryDbm();

    private RelatedQueryDbm() {
    }

    public static RelatedQueryDbm getInstance() {
        return _instance;
    }

    // ===================================================================================
    //                                                                       Current DBDef

    private static final RoleTypeDbm _instance = new RoleTypeDbm();

    private RoleTypeDbm() {
    }

    public static RoleTypeDbm getInstance() {
        return _instance;
    }

    // ===================================================================================
    //                                                                       Current DBDef

## Quick Start

### Basic Usage

```java
import jcifs.CIFSContext;
import jcifs.context.SingletonContext;
import jcifs.smb.SmbFile;

// Using default context
CIFSContext context = SingletonContext.getInstance();

// Access a file (encryption is transparent - automatically used if server requires it)
try (SmbFile file = new SmbFile("smb://server/share/file.txt", context)) {
    if (file.exists()) {

    private static final CrawlingInfoDbm _instance = new CrawlingInfoDbm();

    private CrawlingInfoDbm() {
    }

    public static CrawlingInfoDbm getInstance() {
        return _instance;
    }

    // ===================================================================================
    //                                                                       Current DBDef

     */
    protected static Calendar toCalendar(final Date date, final Locale locale) {
        final Calendar calendar;
        if (locale == null) {
            calendar = Calendar.getInstance();
        } else {
            calendar = Calendar.getInstance(locale);
        }
        calendar.setTime(date);
        return calendar;
    }

    /**
     * Converts a string to a {@link java.sql.Date}.
     *

    //                                                                             =======
    @Override
    public BoostDocumentRuleDbm asDBMeta() {
        return BoostDocumentRuleDbm.getInstance();
    }

    @Override
    public String asTableDbName() {
        return "boost_document_rule";
    }

    // ===================================================================================

    //                                                                             =======
    @Override
    public DuplicateHostDbm asDBMeta() {
        return DuplicateHostDbm.getInstance();
    }

    @Override
    public String asTableDbName() {
        return "duplicate_host";
    }

    @Override
    public boolean hasSpecifiedColumn() {
        return _specification != null;