* @return the total number of bytes read into the buffer, or -1 if there is no more data
     * @throws IOException if an I/O error occurs
     */
    @Override
    public int read(final byte[] b, final int off, final int len) throws IOException {
        return inputStream.read(b, off, len);
    }

    /**
     * Reads some number of bytes from the input stream and stores them into the buffer array b.
     *

import org.codelibs.fess.crawler.exception.CrawlingAccessException;

/**
 * The BinaryTransformer class is responsible for transforming binary data from a ResponseData object
 * into a ResultData object, and for retrieving the binary data from an AccessResultData object.
 * It extends the AbstractTransformer class.
 *
 * <p>

import java.io.Closeable;
import java.util.Map;

/**
 * Interface for reading documents and extracting their contents into a map.
 * Implementations of this interface should provide the logic for reading
 * documents and converting them into a key-value structure.
 *
 * <p>This interface extends {@link java.io.Closeable}, so implementations

    /**
     * The maximum size of the client factory list.
     */
    protected int maxClientFactorySize = 10000;

    /**
     * Registers a CrawlerClientFactory with this creator.
     * All existing client mappings will be loaded into the new factory.
     * @param crawlerClientFactory The CrawlerClientFactory to register.
     */

/**
 * The Transformer interface defines methods for transforming response data
 * and retrieving data from access results.
 */
public interface Transformer {

    /**
     * Transforms the given ResponseData into a ResultData.
     *
     * @param responseData the data to be transformed
     * @return the transformed ResultData
     */
    ResultData transform(ResponseData responseData);

    /**

import jakarta.annotation.Resource;

/**
 * TextTransformer is a class that transforms a ResponseData object into a ResultData object containing the extracted text content.
 * It uses an Extractor to extract the text from the response body based on the MIME type.
 * The extracted text is then converted into a byte array using the specified charset encoding.

import java.io.IOException;
import java.util.List;

/**
 * Interface for converting text into its reading form.
 */
public interface ReadingConverter {

    /**
     * Returns the maximum number of readings.
     *
     * @return the maximum number of readings, default is 10.
     */
    default int getMaxReadingNum() {
        return 10;
    }

    /**
     * Initializes the converter.
     *

     */
    @Override
    public T create() throws Exception {
        return (T) crawlerContainer.getComponent(componentName);
    }

    /**
     * Wraps an object instance into a pooled object.
     * @param obj The object to wrap
     * @return A PooledObject wrapping the given object
     */
    @Override
    public PooledObject<T> wrap(final T obj) {

import org.w3c.dom.Node;
import org.xml.sax.InputSource;

/**
 * {@link XpathTransformer} is a class that transforms HTML content into XML format based on XPath expressions.
 * It extracts data from an HTML document by applying XPath rules defined in {@link #fieldRuleMap}.
 * The extracted data is then formatted into an XML structure and stored in the {@link ResultData}.
 * <p>

    /** Scroll size. */
    protected int scrollSize = 1;
    /** Maximum retry count. */
    protected int maxRetryCount = 5;
    /** Limit of document size. */
    protected long limitOfDocumentSize = 50000;
    /** Query builder. */
    protected QueryBuilder queryBuilder = QueryBuilders.matchAllQuery();
    /** Limit percentage. */
    protected int limitPercentage = 100;
    /** Limit number. */