import com.sun.org.apache.xml.internal.utils.XMLStringFactory; //导入依赖的package包/类
/**
 * Construct a SAXImpl object using the default block size.
 */
public SAXImpl(XSLTCDTMManager mgr, Source source,
               int dtmIdentity, DTMWSFilter whiteSpaceFilter,
               XMLStringFactory xstringfactory,
               boolean doIndexing, boolean buildIdIndex)
{
    this(mgr, source, dtmIdentity, whiteSpaceFilter, xstringfactory,
        doIndexing, DEFAULT_BLOCKSIZE, buildIdIndex, false);
}
 

import com.sun.org.apache.xml.internal.utils.XMLStringFactory; //导入依赖的package包/类
public SAX2RTFDTM(DTMManager mgr, Source source, int dtmIdentity,
               DTMWSFilter whiteSpaceFilter,
               XMLStringFactory xstringfactory,
               boolean doIndexing)
{
  super(mgr, source, dtmIdentity, whiteSpaceFilter,
        xstringfactory, doIndexing);

  // NEVER track source locators for RTFs; they aren't meaningful. I think.
  // (If we did track them, we'd need to tail-prune these too.)
  //com.sun.org.apache.xalan.internal.processor.TransformerFactoryImpl.m_source_location;
  m_useSourceLocationProperty=false;
  m_sourceSystemId = (m_useSourceLocationProperty) ? new StringVector()
                                                   : null;
  m_sourceLine = (m_useSourceLocationProperty) ? new IntVector() : null;
  m_sourceColumn = (m_useSourceLocationProperty) ? new IntVector() : null;

  // Record initial sizes of fields that are pushed and restored
  // for RTF tail-pruning.  More entries can be popped than pushed, so
  // we need this to mark the primordial state of the DTM.
  m_emptyNodeCount = m_size;
  m_emptyNSDeclSetCount = (m_namespaceDeclSets == null)
                               ? 0 : m_namespaceDeclSets.size();
  m_emptyNSDeclSetElemsCount = (m_namespaceDeclSetElements == null)
                                    ? 0 : m_namespaceDeclSetElements.size();
  m_emptyDataCount = m_data.size();
  m_emptyCharsCount = m_chars.size();
  m_emptyDataQNCount = m_dataOrQName.size();
}
 

import com.sun.org.apache.xml.internal.utils.XMLStringFactory; //导入依赖的package包/类
/**
 * Construct a SAX2DTM2 object using the default block size.
 */
public SAX2DTM2(DTMManager mgr, Source source, int dtmIdentity,
               DTMWSFilter whiteSpaceFilter,
               XMLStringFactory xstringfactory,
               boolean doIndexing)
{

  this(mgr, source, dtmIdentity, whiteSpaceFilter,
        xstringfactory, doIndexing, DEFAULT_BLOCKSIZE, true, true, false);
}
 

import com.sun.org.apache.xml.internal.utils.XMLStringFactory; //导入依赖的package包/类
public static DTMManager newInstance(XMLStringFactory xsf, boolean useServicesMechanism)
         throws DTMConfigurationException
{
  DTMManager factoryImpl = null;
  try
  {
      if (useServicesMechanism) {
          factoryImpl = (DTMManager) ObjectFactory
              .createObject(defaultPropName, defaultClassName);
      } else {
          factoryImpl = new com.sun.org.apache.xml.internal.dtm.ref.DTMManagerDefault();
      }
  }
  catch (ConfigurationError e)
  {
    throw new DTMConfigurationException(XMLMessages.createXMLMessage(
      XMLErrorResources.ER_NO_DEFAULT_IMPL, null), e.getException());
      //"No default implementation found");
  }

  if (factoryImpl == null)
  {
    throw new DTMConfigurationException(XMLMessages.createXMLMessage(
      XMLErrorResources.ER_NO_DEFAULT_IMPL, null));
      //"No default implementation found");
  }

  factoryImpl.setXMLStringFactory(xsf);

  return factoryImpl;
}
 

import com.sun.org.apache.xml.internal.utils.XMLStringFactory; //导入依赖的package包/类
/**
 * Construct a DOM2DTM object from a DOM node.
 *
 * @param mgr The DTMManager who owns this DTM.
 * @param domSource the DOM source that this DTM will wrap.
 * @param dtmIdentity The DTM identity ID for this DTM.
 * @param whiteSpaceFilter The white space filter for this DTM, which may
 *                         be null.
 * @param xstringfactory XMLString factory for creating character content.
 * @param doIndexing true if the caller considers it worth it to use
 *                   indexing schemes.
 */
public DOM2DTM(DTMManager mgr, DOMSource domSource,
               int dtmIdentity, DTMWSFilter whiteSpaceFilter,
               XMLStringFactory xstringfactory,
               boolean doIndexing)
{
  super(mgr, domSource, dtmIdentity, whiteSpaceFilter,
        xstringfactory, doIndexing);

  // Initialize DOM navigation
  m_pos=m_root = domSource.getNode();
  // Initialize DTM navigation
  m_last_parent=m_last_kid=NULL;
  m_last_kid=addNode(m_root, m_last_parent,m_last_kid, NULL);

  // Apparently the domSource root may not actually be the
  // Document node. If it's an Element node, we need to immediately
  // add its attributes. Adapted from nextNode().
  // %REVIEW% Move this logic into addNode and recurse? Cleaner!
  //
  // (If it's an EntityReference node, we're probably scrod. For now
  // I'm just hoping nobody is ever quite that foolish... %REVIEW%)
              //
              // %ISSUE% What about inherited namespaces in this case?
              // Do we need to special-case initialize them into the DTM model?
  if(ELEMENT_NODE == m_root.getNodeType())
  {
    NamedNodeMap attrs=m_root.getAttributes();
    int attrsize=(attrs==null) ? 0 : attrs.getLength();
    if(attrsize>0)
    {
      int attrIndex=NULL; // start with no previous sib
      for(int i=0;i<attrsize;++i)
      {
        // No need to force nodetype in this case;
        // addNode() will take care of switching it from
        // Attr to Namespace if necessary.
        attrIndex=addNode(attrs.item(i),0,attrIndex,NULL);
        m_firstch.setElementAt(DTM.NULL,attrIndex);
      }
      // Terminate list of attrs, and make sure they aren't
      // considered children of the element
      m_nextsib.setElementAt(DTM.NULL,attrIndex);

      // IMPORTANT: This does NOT change m_last_parent or m_last_kid!
    } // if attrs exist
  } //if(ELEMENT_NODE)

  // Initialize DTM-completed status
  m_nodesAreProcessed = false;
}