@Override
        public void start() {
            // Mock implementation
        }

        // Custom join method to avoid overriding final Thread.join()
        public void waitForCompletion(long millis) {
            // Mock implementation
        }

        @Override
        public String getOutput() {
            return output;
        }
    }

    // Mock Process implementation

 * within the Fess search framework.
 *
 */
public class QueryParseException extends FessSystemException {

    /** Serial version UID for serialization compatibility */
    private static final long serialVersionUID = 1L;

    /**
     * Constructs a new QueryParseException with the specified ParseException as the cause.
     *
     * @param cause the ParseException that caused this exception
     */

        if (webAuthenticationPager.id != null) {
            cb.query().docMeta().setId_Equal(webAuthenticationPager.id);
        }
        // TODO Long, Integer, String supported only.
        // setup condition
        cb.query().addOrderBy_Hostname_Asc();
        cb.query().addOrderBy_WebConfigId_Asc();

        // search

    }

    /**

        }
        if (StringUtil.isNotBlank(labelTypePager.value)) {
            cb.query().setValue_Wildcard(wrapQuery(labelTypePager.value));
        }
        // TODO Long, Integer, String supported only.

        // setup condition
        cb.query().addOrderBy_SortOrder_Asc();
        cb.query().addOrderBy_Name_Asc();
        // search

    }

    /**

     * @param id     The ID of the stopword item.
     * @return An optional entity containing the stopword item, or empty if not found.
     */
    public OptionalEntity<StopwordsItem> getStopwordsItem(final String dictId, final long id) {
        return getStopwordsFile(dictId).map(file -> file.get(id).get());
    }

    /**
     * Stores a stopword item in the specified dictionary.
     *
     * @param dictId        The ID of the dictionary.

     * @param id     The ID of the synonym item.
     * @return An optional entity containing the synonym item, or empty if not found.
     */
    public OptionalEntity<SynonymItem> getSynonymItem(final String dictId, final long id) {
        return getSynonymFile(dictId).map(file -> file.get(id).get());
    }

    /**
     * Stores a synonym item in the specified dictionary.
     *
     * @param dictId      The ID of the dictionary.

    //                                                                        ============
    private static OptionalEntity<BadWord> getEntity(final CreateForm form, final String username, final long currentTime) {
        switch (form.crudMode) {
        case CrudMode.CREATE:
            return OptionalEntity.of(new BadWord()).map(entity -> {
                entity.setCreatedBy(username);

 * reading, writing, parsing, or other dictionary-related operations.
 */
public class DictionaryException extends FessSystemException {

    /** Serial version UID for serialization. */
    private static final long serialVersionUID = 1L;

    /**
     * Creates a new DictionaryException with the specified message and cause.
     *
     * @param message the detail message
     * @param cause the underlying cause of the exception

 * It can be used to wrap underlying storage exceptions, providing a
 * consistent error handling mechanism for storage operations.
 */
public class StorageException extends FessSystemException {
    private static final long serialVersionUID = 1L;

    /**
     * Constructs a new storage exception with the specified detail message and cause.
     *
     * @param message The detail message.
     * @param cause   The cause of the exception.

     * @param inputs array of input character sequences that will be mapped to the output
     * @param output the output character sequence that inputs will be mapped to
     */
    public CharMappingItem(final long id, final String[] inputs, final String output) {
        this.id = id;
        this.inputs = inputs;
        this.output = output == null ? null : output.replace("\n", " ");
        Arrays.sort(inputs);