final FessConfig fessConfig = ComponentUtil.getFessConfig();
        return fessConfig.isCrawlerDocumentDuplicateTermRemoved();
    }

    /**
     * Gets the array of space character codes from configuration.
     *
     * @return array of character codes to be treated as spaces
     */
    protected int[] getSpaceChars() {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

    }

    /**
     * Encodes a URL by encoding non-URL-safe characters.
     * Uses the request's character encoding if available, otherwise defaults to UTF-8.
     * Only encodes characters that are not considered URL-safe according to CharUtil.
     *
     * @param url the URL to encode
     * @return the encoded URL with non-URL-safe characters properly encoded
     */
    public static String encodeUrl(final String url) {

    }

    @Test
    public void test_sizeOf_stringVariations() {
        // Empty string
        assertEquals(56L, MemoryUtil.sizeOf(""));

        // Single character
        assertEquals(57L, MemoryUtil.sizeOf("a"));

        // Unicode characters
        assertEquals(58L, MemoryUtil.sizeOf("こん"));

        // Very long string
        StringBuilder longString = new StringBuilder();

    }

    @Test
    public void test_causeChainPropagation() {
        // Setup - create a chain of exceptions
        final IllegalArgumentException rootCause = new IllegalArgumentException("Invalid character in query");
        final IllegalStateException middleCause = new IllegalStateException("Query parser state error", rootCause);
        final String message = "Query processing failed";

        input = "line1\nline2";
        result = KuromojiCSVUtil.quoteEscape(input);
        assertEquals("line1\nline2", result);

        // Tabs
        input = "tab\tcharacter";
        result = KuromojiCSVUtil.quoteEscape(input);
        assertEquals("tab\tcharacter", result);

        // Unicode
        input = "日本語,テスト";
        result = KuromojiCSVUtil.quoteEscape(input);
        assertEquals("\"日本語,テスト\"", result);

        }
        return new DefaultQueryBuilder(boolQuery);
    }

    /**
     * Builds a match phrase query, with special handling for single CJK characters.
     * For single CJK characters in title or content fields, uses prefix query instead.
     * @param f The field name.
     * @param text The text to search for.
     * @return The appropriate query builder.
     */

import org.dbflute.optional.OptionalEntity;

import jakarta.annotation.Resource;

/**
 * Service class for managing character mapping operations.
 * <p>
 * This service handles character mapping management including CRUD operations
 * and list retrieval. Character mappings are used for text normalization
 * and character substitution during document processing and search operations.
 * </p>
 */
public class CharMappingService {

    /**

/**
 * Servlet filter for handling character encoding conversion and URL redirection.
 * This filter processes requests with specific encoding requirements and converts
 * character encodings according to configured mapping rules.
 *
 * <p>The filter intercepts requests matching configured path patterns and
 * redirects them with proper character encoding applied to parameters.</p>
 */

        }
    }

    /**
     * Gets the character encoding for a parent URL from cache or data service.
     * Caches encoding information to improve performance on subsequent requests.
     *
     * @param parentUrl the parent URL to get encoding for
     * @param sessionId the session ID for the crawling session
     * @return the character encoding, or null if not found
     */

import org.lastaflute.web.response.JsonResponse;
import org.lastaflute.web.response.StreamResponse;

import jakarta.annotation.Resource;

/**
 * API action for CRUD and file operations on dictionary character mappings.
 */
public class ApiAdminDictMappingAction extends FessApiAdminAction {

    /**
     * Default constructor.
     */
    public ApiAdminDictMappingAction() {
        super();
    }