* synonyms, kuromoji, protwords, and stopwords dictionaries.
 *
 */
public abstract class DictionaryItem {
    /** The unique identifier for this dictionary item */
    protected long id;

    /**
     * Default constructor for DictionaryItem.
     * Creates a new dictionary item with default values.
     */
    public DictionaryItem() {
        // Default constructor
    }

    /**

import org.apache.commons.lang3.StringUtils;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.dict.DictionaryItem;

/**
 * Dictionary item for protected words.
 * This class represents a single protected word entry in the dictionary.
 */
public class ProtwordsItem extends DictionaryItem {
    private final String input;

    private String newInput;

    /**
     * Constructor for ProtwordsItem.

     * @return an OptionalEntity containing the dictionary file if found, empty otherwise
     */
    public OptionalEntity<DictionaryFile<? extends DictionaryItem>> getDictionaryFile(final String id) {
        for (final DictionaryFile<? extends DictionaryItem> dictFile : getDictionaryFiles()) {
            if (dictFile.getId().equals(id)) {
                return OptionalEntity.of(dictFile);
            }
        }

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.fess.dict.DictionaryCreator;
import org.codelibs.fess.dict.DictionaryFile;
import org.codelibs.fess.dict.DictionaryItem;

import jakarta.annotation.PostConstruct;

/**
 * A dictionary creator for stopwords files.
 * This class is responsible for creating {@link StopwordsFile} instances

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.fess.dict.DictionaryCreator;
import org.codelibs.fess.dict.DictionaryFile;
import org.codelibs.fess.dict.DictionaryItem;

import jakarta.annotation.PostConstruct;

/**
 * Creator for protected words dictionary files.
 * This class manages the creation and registration of protected words dictionary files.
 */

package org.codelibs.fess.app.web.admin.dict;

import org.codelibs.fess.annotation.Secured;
import org.codelibs.fess.app.web.base.FessAdminAction;
import org.codelibs.fess.dict.DictionaryFile;
import org.codelibs.fess.dict.DictionaryItem;
import org.codelibs.fess.dict.DictionaryManager;
import org.codelibs.fess.util.RenderDataUtil;
import org.lastaflute.web.Execute;
import org.lastaflute.web.response.HtmlResponse;

     * @param timestamp the timestamp of the dictionary file
     * @return a DictionaryFile instance if the path matches, null otherwise
     */
    public DictionaryFile<? extends DictionaryItem> create(final String path, final Date timestamp) {
        if (!isTarget(path)) {
            return null;
        }

        return newDictionaryFile(encodePath(path), path, timestamp);
    }

    /**

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.fess.dict.DictionaryCreator;
import org.codelibs.fess.dict.DictionaryFile;
import org.codelibs.fess.dict.DictionaryItem;

import jakarta.annotation.PostConstruct;

/**
 * A dictionary creator for synonym files.
 * This class is responsible for creating {@link SynonymFile} instances

import java.util.stream.Stream;

import org.codelibs.fess.app.web.api.ApiResult;
import org.codelibs.fess.app.web.api.admin.FessApiAdminAction;
import org.codelibs.fess.dict.DictionaryFile;
import org.codelibs.fess.dict.DictionaryItem;
import org.codelibs.fess.dict.DictionaryManager;
import org.lastaflute.web.Execute;
import org.lastaflute.web.response.JsonResponse;

import jakarta.annotation.Resource;

/**

import org.apache.commons.lang3.StringUtils;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.dict.DictionaryItem;

/**
 * Represents an item in a stopwords dictionary.
 * This class stores a stopword and tracks its updated value.
 */
public class StopwordsItem extends DictionaryItem {
    /** The original stopword. */
    private final String input;

    /** The new stopword, if updated. */