- **Web Framework**: LastaFlute (MVC framework)
- **DI Container**: Lasta Di
- **Data Access**: DBFlute (type-safe ORM for OpenSearch)
- **Search Engine**: OpenSearch
- **App Server**: Embedded Tomcat
- **Crawler**: fess-crawler library
- **Scheduler**: Lasta Job

## Key Directories

```
src/main/java/org/codelibs/fess/
├── FessBoot.java              # Application entry point
├── app/

labels.crawling_info_delete_all_cancel=Anuluj
labels.crawling_info_thread_dump=Zrzut wątków
labels.crawling_info_CrawlerStartTime=Czas rozpoczęcia crawlera
labels.crawling_info_CrawlerEndTime=Czas zakończenia crawlera
labels.crawling_info_CrawlerExecTime=Czas wykonania crawlera
labels.crawling_info_CrawlerStatus=Status crawlera
labels.crawling_info_WebFsCrawlExecTime=Czas wykonania indeksowania (Web/Plik)

     * Document URL patterns to exclude from search index.
     */
    @CustomSize(maxKey = "form.admin.max.input.size")
    public String excludedDocUrls;

    /**
     * Additional configuration parameters for the crawler.
     */
    @CustomSize(maxKey = "form.admin.max.input.size")
    public String configParameter;

    /**
     * The maximum crawling depth from the starting URLs.
     */
    @Min(value = 0)

import org.codelibs.core.io.CopyUtil;
import org.codelibs.fess.crawler.Constants;
import org.codelibs.fess.crawler.entity.AccessResultData;
import org.codelibs.fess.crawler.entity.ResponseData;
import org.codelibs.fess.crawler.entity.ResultData;
import org.codelibs.fess.crawler.exception.CrawlerSystemException;

/**
 * <p>
 * FileTransformer stores the content of a crawled resource as a file on the file system.

import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.crawler.Constants;
import org.codelibs.fess.crawler.entity.AccessResult;
import org.codelibs.fess.crawler.entity.OpenSearchUrlQueue;
import org.codelibs.fess.crawler.entity.UrlQueue;
import org.codelibs.fess.crawler.exception.OpenSearchAccessException;
import org.codelibs.fess.crawler.service.UrlQueueService;
import org.codelibs.fess.crawler.util.OpenSearchCrawlerConfig;

import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.Constants;
import org.codelibs.fess.crawler.entity.AccessResult;
import org.codelibs.fess.crawler.entity.AccessResultData;
import org.codelibs.fess.crawler.entity.UrlQueue;
import org.codelibs.fess.crawler.util.CrawlingParameterUtil;
import org.codelibs.fess.crawler.util.FieldConfigs;
import org.codelibs.fess.mylasta.direction.FessConfig;

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.crawler.entity;

import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;

import org.apache.tika.metadata.ClimateForcast;
import org.apache.tika.metadata.CreativeCommons;

import java.util.Map;
import java.util.Set;

import org.codelibs.core.exception.IORuntimeException;
import org.codelibs.core.io.FileUtil;
import org.codelibs.fess.crawler.Constants;

/**
 * Represents the response data obtained from a crawled resource.
 * This class encapsulates various details of an HTTP response, including
 * status code, content type, content length, and the response body.

     *
     * @see org.codelibs.fess.crawler.entity.AccessResult#getAccessResultDataAsOne()
     */
    @Override
    public AccessResultData<IDTYPE> getAccessResultData() {
        return accessResultData;
    }

    /*
     * (non-Javadoc)
     *
     * @see
     * org.codelibs.fess.crawler.entity.AccessResult#setAccessResultDataAsOne(org.codelibs.fess.crawler.db.exentity.AccessResultData)
     */

import org.codelibs.fess.crawler.client.CrawlerClientFactory;
import org.codelibs.fess.crawler.container.CrawlerContainer;
import org.codelibs.fess.crawler.entity.AccessResult;
import org.codelibs.fess.crawler.entity.RequestData;
import org.codelibs.fess.crawler.entity.ResponseData;
import org.codelibs.fess.crawler.entity.UrlQueue;
import org.codelibs.fess.crawler.exception.ChildUrlsException;