@Override
    protected String doBuildColumnString(String dm) {
        StringBuilder sb = new StringBuilder();
        sb.append(dm).append(available);
        sb.append(dm).append(boost);
        sb.append(dm).append(createdBy);
        sb.append(dm).append(createdTime);
        sb.append(dm).append(description);
        sb.append(dm).append(handlerName);
        sb.append(dm).append(handlerParameter);

    @Override
    protected String doBuildColumnString(String dm) {
        StringBuilder sb = new StringBuilder();
        sb.append(dm).append(authRealm);
        sb.append(dm).append(createdBy);
        sb.append(dm).append(createdTime);
        sb.append(dm).append(hostname);
        sb.append(dm).append(parameters);
        sb.append(dm).append(password);
        sb.append(dm).append(port);
        sb.append(dm).append(protocolScheme);

    @Override
    protected String doBuildColumnString(String dm) {
        StringBuilder sb = new StringBuilder();
        sb.append(dm).append(available);
        sb.append(dm).append(crawler);
        sb.append(dm).append(createdBy);
        sb.append(dm).append(createdTime);
        sb.append(dm).append(cronExpression);
        sb.append(dm).append(jobLogging);
        sb.append(dm).append(name);
        sb.append(dm).append(scriptData);

    @Override
    protected String doBuildColumnString(String dm) {
        StringBuilder sb = new StringBuilder();
        sb.append(dm).append(boost);
        sb.append(dm).append(createdBy);
        sb.append(dm).append(createdTime);
        sb.append(dm).append(permissions);
        sb.append(dm).append(reading);
        sb.append(dm).append(suggestWord);
        sb.append(dm).append(updatedBy);
        sb.append(dm).append(updatedTime);

    protected String doBuildColumnString(String dm) {
        StringBuilder sb = new StringBuilder();
        sb.append(dm).append(urlId);
        sb.append(dm).append(docId);
        sb.append(dm).append(order);
        sb.append(dm).append(queryId);
        sb.append(dm).append(queryRequestedAt);
        sb.append(dm).append(requestedAt);
        sb.append(dm).append(url);
        sb.append(dm).append(userSessionId);

		time.Sleep(time.Duration(dm.rng.Float64() * float64(dm.lockRetryMinInterval)))
	}
}

// RUnlock releases a read lock held on dm.
//
// It is a run-time error if dm is not locked on entry to RUnlock.
func (dm *DRWMutex) RUnlock(ctx context.Context) {
	dm.m.Lock()
	dm.cancelRefresh()
	dm.m.Unlock()

	restClnts, owner := dm.clnt.GetLockers()

    @Override
    protected String doBuildColumnString(String dm) {
        StringBuilder sb = new StringBuilder();
        sb.append(dm).append(boostExpr);
        sb.append(dm).append(createdBy);
        sb.append(dm).append(createdTime);
        sb.append(dm).append(sortOrder);
        sb.append(dm).append(updatedBy);
        sb.append(dm).append(updatedTime);
        sb.append(dm).append(urlExpr);
        if (sb.length() > dm.length()) {

    protected String doBuildColumnString(String dm) {
        StringBuilder sb = new StringBuilder();
        sb.append(dm).append(createdBy);
        sb.append(dm).append(createdTime);
        sb.append(dm).append(duplicateHostName);
        sb.append(dm).append(regularName);
        sb.append(dm).append(sortOrder);
        sb.append(dm).append(updatedBy);
        sb.append(dm).append(updatedTime);

        sb.append(dm).append(mail);
        sb.append(dm).append(mobile);
        sb.append(dm).append(name);
        sb.append(dm).append(pager);
        sb.append(dm).append(password);
        sb.append(dm).append(physicalDeliveryOfficeName);
        sb.append(dm).append(postOfficeBox);
        sb.append(dm).append(postalAddress);
        sb.append(dm).append(postalCode);

        sb.append(dm).append(excludedPaths);
        sb.append(dm).append(includedDocPaths);
        sb.append(dm).append(includedPaths);
        sb.append(dm).append(intervalTime);
        sb.append(dm).append(maxAccessCount);
        sb.append(dm).append(name);
        sb.append(dm).append(numOfThread);
        sb.append(dm).append(paths);
        sb.append(dm).append(permissions);
        sb.append(dm).append(sortOrder);