}

    /**
     * Retrieves an extractor for the specified key.
     * If multiple extractors are associated with the key, returns a composite extractor
     * that tries each extractor in order until one succeeds.
     *
     * @param key the key to look up
     * @return the extractor for the key, or null if not found
     */
    public Extractor getExtractor(final String key) {

     * Puts multiple values for a given key in the metadata.
     *
     * @param key the metadata key
     * @param values the values to associate with the key
     */
    public void putValues(final String key, final String[] values) {
        metadata.put(key, values);
    }

    /**
     * Puts a single value for a given key in the metadata.
     *
     * @param key the metadata key

      with:
        java-version: '21'
        distribution: 'temurin'
    - uses: actions/cache@v4
      with:
        path: ~/.m2/repository
        key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
        restore-keys: |
          ${{ runner.os }}-maven-
    - name: Checkout fess-parent
      uses: actions/checkout@v4
      with:
        repository: codelibs/fess-parent

      with:
        java-version: '21'
        distribution: 'temurin'
    - uses: actions/cache@v4
      with:
        path: ~/.m2/repository
        key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
        restore-keys: |
          ${{ runner.os }}-maven-
    - name: Checkout fess-parent
      uses: actions/checkout@v4
      with:
        repository: codelibs/fess-parent

        assertEquals(value2, settings.array().get(key)[1]);
        assertEquals(value3, settings.array().get(key)[2]);

        settings.array().delete(key, value2);
        assertEquals(2, settings.array().get(key).length);
        assertEquals(value1, settings.array().get(key)[0]);
        assertEquals(value3, settings.array().get(key)[1]);

        settings.array().delete(key);

    public void test_getExtractor() {
        String key;

        key = "application/msword";
        assertTrue(extractorFactory.getExtractor(key) instanceof TikaExtractor);

        key = "application/vnd.ms-excel";
        assertTrue(extractorFactory.getExtractor(key) instanceof TikaExtractor);

        key = "application/vnd.ms-powerpoint";
        assertTrue(extractorFactory.getExtractor(key) instanceof TikaExtractor);

 * <ul>
 *   <li>{@code ELEVATE_WORD_SETTINGD_KEY} - The key for elevate word settings.</li>
 *   <li>{@code ELEVATE_WORD_BOOST} - The key for elevate word boost value.</li>
 *   <li>{@code ELEVATE_WORD_READING} - The key for elevate word readings.</li>
 *   <li>{@code ELEVATE_WORD_FIELDS} - The key for elevate word fields.</li>
 *   <li>{@code ELEVATE_WORD_TAGS} - The key for elevate word tags.</li>

        String key = "key";
        int value = 1;
        settings.set(key, value);
        assertEquals(value, settings.getAsInt(key, -1));
    }

    @Test
    public void test_setAndGetAsLong() {
        String key = "key";
        long value = Long.MAX_VALUE;
        settings.set(key, value);
        assertEquals(value, settings.getAsLong(key, -1));
    }

    @Test

     * Constructs a new AbstractExtractor.
     */
    public AbstractExtractor() {
        // NOP
    }

    /**
     * Registers this extractor with the ExtractorFactory.
     * @param keyList The list of keys to register this extractor under.
     */
    public void register(final List<String> keyList) {
        if (keyList == null || keyList.isEmpty()) {

     * @param key the field name to match against
     * @param regex the regular expression pattern
     */
    public void addRule(final String key, final String regex) {
        regexMap.put(key, Pattern.compile(regex));
    }

    /**
     * Adds a compiled regular expression rule for the specified field.
     * @param key the field name to match against