});
        assertEquals(1, extractorFactory.getExtractor(key).getWeight());
        extractorFactory.addExtractor(key, new Extractor() {
            @Override
            public ExtractData getText(InputStream in, Map<String, String> params) {
                return null;
            }

            @Override
            public int getWeight() {
                return 10;
            }
        });

        }
        if (extractorMap.containsKey(key)) {
            final Extractor oldExtractor = extractorMap.get(key);
            if (oldExtractor.getWeight() > extractor.getWeight()) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Ignored {} on {}. Use {}.", extractor.getClass().getName(), key, oldExtractor.getClass().getName());
                }

    void setDepth(Integer depth);

    Long getLastModified();

    void setLastModified(Long lastModified);

    Long getCreateTime();

    void setCreateTime(Long createTime);

    float getWeight();

    void setWeight(float weight);

import org.codelibs.fess.crawler.entity.ExtractData;

/**
 * @author shinsuke
 *
 */
public interface Extractor {

    ExtractData getText(InputStream in, Map<String, String> params);

    default int getWeight() {
        return 1;
    }

              } else if (map.isExpired(e, now)) {
                // This is a duplicate check, as preWriteCleanup already purged expired
                // entries, but let's accommodate an incorrect expiration queue.
                enqueueNotification(
                    entryKey, hash, value, valueReference.getWeight(), RemovalCause.EXPIRED);

     */
    @Override
    public void setLastModified(final Long lastModified) {
        this.lastModified = lastModified;
    }

    @Override
    public float getWeight() {
        return weight;
    }

    @Override
    public void setWeight(float weight) {
        this.weight = weight;
    }

    @Override
    public String toString() {

      return new DummyValueReference<>();
    }

    @Override
    public V get() {
      return value;
    }

    @Override
    public int getWeight() {
      return 1;
    }

    @Override
    public @Nullable ReferenceEntry<K, V> getEntry() {
      return null;
    }

    @Override
    public ValueReference<K, V> copyFor(

      return new DummyValueReference<>();
    }

    @Override
    public V get() {
      return value;
    }

    @Override
    public int getWeight() {
      return 1;
    }

    @Override
    public @Nullable ReferenceEntry<K, V> getEntry() {
      return null;
    }

    @Override
    public ValueReference<K, V> copyFor(

                .missing(0.1f).modifier(FieldValueFactorFunction.Modifier.LOG2P).setWeight(1.0F)));
        flist.add(new FunctionScoreQueryBuilder.FilterFunctionBuilder(ScoreFunctionBuilders.fieldValueFactorFunction(FieldNames.QUERY_FREQ)
                .missing(0.1f).modifier(FieldValueFactorFunction.Modifier.LOG2P).setWeight(1.0F)));
        flist.add(new FunctionScoreQueryBuilder.FilterFunctionBuilder(