* successful login, authentication failures, and redirects.
 */
public class SsoAction extends FessLoginAction {
    // ===================================================================================
    //                                                                            Constant
    //
    private static final Logger logger = LogManager.getLogger(SsoAction.class);

    /**
     * Constructs a new SSO action.
     */

import java.util.Set;

import org.apache.commons.text.StringEscapeUtils;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.core.net.URLUtil;
import org.codelibs.fess.Constants;
import org.codelibs.fess.app.web.sso.SsoAction;
import org.codelibs.fess.entity.SearchRequestParams.SearchRequestType;
import org.codelibs.fess.helper.LabelTypeHelper;
import org.codelibs.fess.helper.OsddHelper;
import org.codelibs.fess.helper.PopularWordHelper;