import com.sun.org.apache.xml.internal.utils.XMLReaderManager; //导入依赖的package包/类
public void parse (InputSource input) throws SAXException, IOException
{
    XMLReader managedReader = null;

    try {
        if (getParent() == null) {
            try {
                managedReader = XMLReaderManager.getInstance(_useServicesMechanism)
                                                .getXMLReader();
                setParent(managedReader);
            } catch (SAXException  e) {
                throw new SAXException(e.toString());
            }
        }

        // call parse on the parent
        getParent().parse(input);
    } finally {
        if (managedReader != null) {
            XMLReaderManager.getInstance(_useServicesMechanism).releaseXMLReader(managedReader);
        }
    }
}
 

import com.sun.org.apache.xml.internal.utils.XMLReaderManager; //导入依赖的package包/类
protected TransformerImpl(Translet translet, Properties outputProperties,
    int indentNumber, TransformerFactoryImpl tfactory)
{
    _translet = (AbstractTranslet) translet;
    _properties = createOutputProperties(outputProperties);
    _propertiesClone = (Properties) _properties.clone();
    _indentNumber = indentNumber;
    _tfactory = tfactory;
    _useServicesMechanism = _tfactory.useServicesMechnism();
    _accessExternalStylesheet = (String)_tfactory.getAttribute(XMLConstants.ACCESS_EXTERNAL_STYLESHEET);
    _accessExternalDTD = (String)_tfactory.getAttribute(XMLConstants.ACCESS_EXTERNAL_DTD);
    _securityManager = (XMLSecurityManager)_tfactory.getAttribute(XalanConstants.SECURITY_MANAGER);
    _readerManager = XMLReaderManager.getInstance(_useServicesMechanism);
    _readerManager.setProperty(XMLConstants.ACCESS_EXTERNAL_DTD, _accessExternalDTD);
    _readerManager.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, _isSecureProcessing);
    _readerManager.setProperty(XalanConstants.SECURITY_MANAGER, _securityManager);
    //_isIncremental = tfactory._incremental;
}
 

import com.sun.org.apache.xml.internal.utils.XMLReaderManager; //导入依赖的package包/类
/**
 * This method returns the SAX2 parser to use with the InputSource
 * obtained from this URI.
 * It may return null if any SAX2-conformant XML parser can be used,
 * or if getInputSource() will also return null. The parser must
 * be free for use (i.e., not currently in use for another parse().
 * After use of the parser is completed, the releaseXMLReader(XMLReader)
 * must be called.
 *
 * @param inputSource The value returned from the URIResolver.
 * @return  a SAX2 XMLReader to use to resolve the inputSource argument.
 *
 * @return non-null XMLReader reference ready to parse.
 */
synchronized public XMLReader getXMLReader(Source inputSource)
{

  try
  {
    XMLReader reader = (inputSource instanceof SAXSource)
                       ? ((SAXSource) inputSource).getXMLReader() : null;

    // If user did not supply a reader, ask for one from the reader manager
    if (null == reader) {
      if (m_readerManager == null) {
          m_readerManager = XMLReaderManager.getInstance(super.useServicesMechnism());
      }

      reader = m_readerManager.getXMLReader();
    }

    return reader;

  } catch (SAXException se) {
    throw new DTMException(se.getMessage(), se);
  }
}
 

import com.sun.org.apache.xml.internal.utils.XMLReaderManager; //导入依赖的package包/类
protected TransformerImpl(Translet translet, Properties outputProperties,
    int indentNumber, TransformerFactoryImpl tfactory)
{
    _translet = (AbstractTranslet) translet;
    _properties = createOutputProperties(outputProperties);
    _propertiesClone = (Properties) _properties.clone();
    _indentNumber = indentNumber;
    _tfactory = tfactory;
    _useServicesMechanism = _tfactory.useServicesMechnism();
    _accessExternalStylesheet = (String)_tfactory.getAttribute(XMLConstants.ACCESS_EXTERNAL_STYLESHEET);
    _accessExternalDTD = (String)_tfactory.getAttribute(XMLConstants.ACCESS_EXTERNAL_DTD);
    _securityManager = (XMLSecurityManager)_tfactory.getAttribute(XalanConstants.SECURITY_MANAGER);
    _readerManager = XMLReaderManager.getInstance(_useServicesMechanism);
    _readerManager.setProperty(XMLConstants.ACCESS_EXTERNAL_DTD, _accessExternalDTD);
    _readerManager.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, _isSecureProcessing);
    _readerManager.setProperty(XalanConstants.SECURITY_MANAGER, _securityManager);
    _cdataChunkSize = JdkXmlUtils.getValue(_tfactory.getAttribute(JdkXmlUtils.CDATA_CHUNK_SIZE),
            JdkXmlUtils.CDATA_CHUNK_SIZE_DEFAULT);
    _readerManager.setProperty(JdkXmlUtils.CDATA_CHUNK_SIZE, _cdataChunkSize);

    _useCatalog = _tfactory.getFeature(XMLConstants.USE_CATALOG);
    if (_useCatalog) {
        _catalogFeatures = (CatalogFeatures)_tfactory.getAttribute(JdkXmlFeatures.CATALOG_FEATURES);
        String catalogFiles = _catalogFeatures.get(CatalogFeatures.Feature.DEFER);
        if (catalogFiles != null) {
            _readerManager.setFeature(XMLConstants.USE_CATALOG, _useCatalog);
            _readerManager.setProperty(JdkXmlFeatures.CATALOG_FEATURES, _catalogFeatures);
        }
    }
    //_isIncremental = tfactory._incremental;
}