if (Constants.DEFAULT_FIELD.equals(field) && defaultField != null) {
            return defaultField;
        }
        return field;
    }

    protected interface DefaultQueryBuilderFunction {
        QueryBuilder apply(String field, float boost);
    }

import org.lastaflute.web.validation.LaValidatable;
import org.lastaflute.web.validation.VaMessenger;

/**
 * @author jflute
 */
public abstract class FessBaseAction extends TypicalAction // has several interfaces for direct use
        implements LaValidatable<FessMessages>, FessHtmlPath {

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

    //                                                                  Resource Interface
    //                                                                  ==================
    @FunctionalInterface
    public interface UserTypeSupplier {
        OptionalThing<String> supply();
    }

    @FunctionalInterface
    public interface UserBeanSupplier {
        OptionalThing<FessUserBean> supply();
    }

 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.app.web.base.login;

public interface FessCredential {

    String getUserId();

 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.script;

import java.util.Map;

public interface ScriptEngine {
    Object evaluate(final String template, final Map<String, Object> paramMap);

 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.entity;

import java.io.Serializable;

public interface FessUser extends Serializable {

    String getName();

    String[] getRoleNames();

    String[] getGroupNames();

    String[] getPermissions();

    default boolean isEditable() {

    public void shutdown() {
        shutdownListener.onShutdown();
    }

    public void addShutdownListener(final ShutdownListener listener) {
        shutdownListener = listener;
    }

    public interface ShutdownListener {
        void onShutdown();
    }

        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }
    }

    public interface XContentBuilderCallback {
        XContentBuilder apply(XContentBuilder builder, ToXContent.Params params) throws IOException;
    }

import org.codelibs.fess.crawler.client.http.HcHttpClient;
import org.codelibs.fess.crawler.client.smb.SmbClient;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.util.ComponentUtil;

public interface CrawlingConfig {

    String getId();

    String getName();

    String[] getPermissions();

    String[] getVirtualHosts();

    String getDocumentBoost();

            } catch (final ParseException e) {
                throw new QueryParseException(e);
            }
        };
    }

    public interface Filter {
        Query parse(final String query, final FilterChain chain);
    }

    public interface FilterChain {
        Query parse(final String query);
    }