- **XML Processing** (`org.codelibs.core.xml`) - XML DOM utilities, SAX parser helpers, and schema validation support
- **SQL Utilities** (`org.codelibs.core.sql`) - JDBC helper methods for result sets, prepared statements, and connection management

import org.codelibs.fess.opensearch.client.SearchEngineClient;
import org.lastaflute.di.exception.IORuntimeException;
import org.opensearch.core.xcontent.MediaType;
import org.opensearch.core.xcontent.ToXContent;
import org.opensearch.core.xcontent.XContentBuilder;
import org.opensearch.core.xcontent.XContentHelper;
import org.opensearch.search.SearchHit;

/**
 * Utility class for search engine operations and content formatting.

 */
package org.codelibs.core.collection;

import static org.codelibs.core.collection.EnumerationIterator.iterable;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.not;
import static org.junit.Assert.assertThat;

import java.util.Enumeration;
import java.util.Vector;

import org.codelibs.core.exception.ClUnsupportedOperationException;

 * governing permissions and limitations under the License.
 */
package org.codelibs.core.convert;

import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertEquals;

import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;

import org.codelibs.core.exception.NullArgumentException;
import org.junit.After;
import org.junit.Before;
import org.junit.Rule;

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

import static org.codelibs.core.collection.ArrayUtil.asArray;

import java.sql.SQLException;

import org.codelibs.core.message.MessageFormatter;

/**
 * Exception that wraps {@link SQLException}.
 *
 * @author higa
 * @author manhole
 */

 */
package org.codelibs.core.xml;

import javax.xml.XMLConstants;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.codelibs.core.exception.ParserConfigurationRuntimeException;
import org.codelibs.core.log.Logger;

/**
 * Utility class for {@link DocumentBuilderFactory}.
 *

import org.codelibs.core.convert.TimeConversionUtil;
import org.codelibs.core.convert.TimestampConversionUtil;
import org.codelibs.core.exception.BeanMethodSetAccessibleFailureException;
import org.codelibs.core.exception.ClIllegalArgumentException;
import org.codelibs.core.exception.IllegalPropertyRuntimeException;
import org.codelibs.core.exception.ParseRuntimeException;
import org.codelibs.core.lang.ConstructorUtil;
import org.codelibs.core.lang.FieldUtil;

 * governing permissions and limitations under the License.
 */
package org.codelibs.core.convert;

import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.nullValue;
import static org.junit.Assert.assertThat;

import org.codelibs.core.exception.ClIllegalArgumentException;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;

import org.codelibs.fess.mylasta.direction.sponsor.FessUserTimeZoneProcessProvider;
import org.lastaflute.core.direction.CachedFwAssistantDirector;
import org.lastaflute.core.direction.FwAssistDirection;
import org.lastaflute.core.direction.FwCoreDirection;
import org.lastaflute.core.security.InvertibleCryptographer;
import org.lastaflute.core.security.OneWayCryptographer;
import org.lastaflute.db.dbflute.classification.ListedClassificationProvider;

import java.util.concurrent.TimeUnit;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.core.misc.DynamicProperties;
import org.codelibs.core.timer.TimeoutManager;
import org.codelibs.core.timer.TimeoutTask;
import org.codelibs.fess.Constants;
import org.codelibs.fess.crawler.client.FesenClient;