import com.sun.org.apache.xml.internal.dtm.ref.DTMDefaultBase; //导入依赖的package包/类
/**
 * Set start to END should 'close' the iterator,
 * i.e. subsequent call to next() should return END.
 *
 * @param node Sets the root of the iteration.
 *
 * @return A DTMAxisIterator set to the start of the iteration.
 */
public DTMAxisIterator setStartNode(int node) {
    //%HZ%: Added reference to DTMDefaultBase.ROOTNODE back in, temporarily
    if (node == DTMDefaultBase.ROOTNODE) {
        node = getDocument();
    }

    if (_isRestartable) {
        _startNode = node;
        _currentNode = (node == DTM.NULL) ? DTM.NULL : NOTPROCESSED;

        return resetPosition();
    }

    return this;
}
 

import com.sun.org.apache.xml.internal.dtm.ref.DTMDefaultBase; //导入依赖的package包/类
public void removeDOMAdapter(DOMAdapter adapter) {
    _documents.remove(adapter.getDocumentURI(0));
    DOM dom = adapter.getDOMImpl();

    if (dom instanceof DTMDefaultBase) {
        SuballocatedIntVector ids = ((DTMDefaultBase) dom).getDTMIDs();
        int idsSize = ids.size();
        for (int i = 0; i < idsSize; i++) {
            _adapters[ids.elementAt(i) >>> DTMManager.IDENT_DTM_NODE_BITS] = null;
        }
    } else {
        int id = dom.getDocument() >>> DTMManager.IDENT_DTM_NODE_BITS;
        if ((id > 0) && (id < _adapters.length) && isMatchingAdapterEntry(_adapters[id], adapter)) {
            _adapters[id] = null;
        } else {
            boolean found = false;
            for (int i = 0; i < _adapters.length; i++) {
                if (isMatchingAdapterEntry(_adapters[id], adapter)) {
                    _adapters[i] = null;
                    found = true;
                    break;
                }
            }
        }
    }
}
 

import com.sun.org.apache.xml.internal.dtm.ref.DTMDefaultBase; //导入依赖的package包/类
/**
 * Setting start to END should 'close' the iterator,
 * i.e. subsequent call to next() should return END.
 * <p>
 * If the iterator is not restartable, this has no effect.
 * %REVIEW% Should it return/throw something in that case,
 * or set current node to END, to indicate request-not-honored?
 *
 * @param node Sets the root of the iteration.
 *
 * @return A DTMAxisIterator set to the start of the iteration.
 */
public DTMAxisIterator setStartNode(int node)
{
  //%HZ%: Added reference to DTMDefaultBase.ROOTNODE back in, temporarily
  if (node == DTMDefaultBase.ROOTNODE)
    node = getDocument();
  if (_isRestartable) {
    _startNode = node;
    _currentNode = (node == DTM.NULL) ? DTM.NULL
                                      : _firstch2(makeNodeIdentity(node));

    return resetPosition();
  }

  return this;
}
 

import com.sun.org.apache.xml.internal.dtm.ref.DTMDefaultBase; //导入依赖的package包/类
/**
 * Utility function: used to convert reference to org.w3c.dom.NodeList.
 */
public static NodeList referenceToNodeList(Object obj, DOM dom) {
    if (obj instanceof Node || obj instanceof DTMAxisIterator) {
        DTMAxisIterator iter = referenceToNodeSet(obj);
        return dom.makeNodeList(iter);
    }
    else if (obj instanceof DOM) {
      dom = (DOM)obj;
      return dom.makeNodeList(DTMDefaultBase.ROOTNODE);
    }
    else {
        final String className = obj.getClass().getName();
        runTimeError(DATA_CONVERSION_ERR, className,
            "org.w3c.dom.NodeList");
        return null;
    }
}
 

import com.sun.org.apache.xml.internal.dtm.ref.DTMDefaultBase; //导入依赖的package包/类
public DupFilterIterator(DTMAxisIterator source) {
        _source = source;
// System.out.println("DFI source = " + source + " this = " + this);

        // Cache contents of id() or key() index right away. Necessary for
        // union expressions containing multiple calls to the same index, and
        // correct as well since start-node is irrelevant for id()/key() exrp.
        if (source instanceof KeyIndex) {
            setStartNode(DTMDefaultBase.ROOTNODE);
        }
    }
 

import com.sun.org.apache.xml.internal.dtm.ref.DTMDefaultBase; //导入依赖的package包/类
/**
 * Set the start node for this iterator
 * @param node The start node
 * @return A reference to this node iterator
 */
public DTMAxisIterator setStartNode(int node) {
    if (_isRestartable) {
        // KeyIndex iterators are always relative to the root node, so there
        // is never any point in re-reading the iterator (and we SHOULD NOT).
        boolean sourceIsKeyIndex = _source instanceof KeyIndex;

        if (sourceIsKeyIndex
                && _startNode == DTMDefaultBase.ROOTNODE) {
            return this;
        }

        if (node != _startNode) {
            _source.setStartNode(_startNode = node);

            _nodes.clear();
            while ((node = _source.next()) != END) {
                _nodes.add(node);
            }

            // Nodes produced by KeyIndex are known to be in document order.
            // Take advantage of it.
            if (!sourceIsKeyIndex) {
                _nodes.sort();
            }
            _nodesSize = _nodes.cardinality();
            _current = 0;
            _lastNext = END;
            resetPosition();
        }
    }
    return this;
}
 

import com.sun.org.apache.xml.internal.dtm.ref.DTMDefaultBase; //导入依赖的package包/类
/**
 * Construct a SAXImpl object using the given block size.
 */
public SAXImpl(XSLTCDTMManager mgr, Source source,
               int dtmIdentity, DTMWSFilter whiteSpaceFilter,
               XMLStringFactory xstringfactory,
               boolean doIndexing, int blocksize,
               boolean buildIdIndex,
               boolean newNameTable)
{
    super(mgr, source, dtmIdentity, whiteSpaceFilter, xstringfactory,
        doIndexing, blocksize, false, buildIdIndex, newNameTable);

    _dtmManager = mgr;
    _size = blocksize;

    // Use a smaller size for the space stack if the blocksize is small
    _xmlSpaceStack = new int[blocksize <= 64 ? 4 : 64];

    /* From DOMBuilder */
    _xmlSpaceStack[0] = DTMDefaultBase.ROOTNODE;

    // If the input source is DOMSource, set the _document field and
    // create the node2Ids table.
    if (source instanceof DOMSource) {
        _hasDOMSource = true;
        DOMSource domsrc = (DOMSource)source;
        Node node = domsrc.getNode();
        if (node instanceof Document) {
            _document = (Document)node;
        }
        else {
            _document = node.getOwnerDocument();
        }
        _node2Ids = new Hashtable();
    }
}
 

import com.sun.org.apache.xml.internal.dtm.ref.DTMDefaultBase; //导入依赖的package包/类
public DTMAxisIterator setStartNode(int node) {
    _startNode = DTMDefaultBase.ROOTNODE;
    if (_isRestartable) {
        _source.setStartNode(_startNode);
        resetPosition();
    }
    return this;
}
 

import com.sun.org.apache.xml.internal.dtm.ref.DTMDefaultBase; //导入依赖的package包/类
public MultiDOM(DOM main) {
    _size = INITIAL_SIZE;
    _free = 1;
    _adapters = new DOM[INITIAL_SIZE];
    DOMAdapter adapter = (DOMAdapter)main;
    _adapters[0] = adapter;
    _main = adapter;
    DOM dom = adapter.getDOMImpl();
    if (dom instanceof DTMDefaultBase) {
        _dtmManager = ((DTMDefaultBase)dom).getManager();
    }

    // %HZ% %REVISIT% Is this the right thing to do here?  In the old
    // %HZ% %REVISIT% version, the main document did not get added through
    // %HZ% %REVISIT% a call to addDOMAdapter, which meant it couldn't be
    // %HZ% %REVISIT% found by a call to getDocumentMask.  The problem is
    // %HZ% %REVISIT% TransformerHandler is typically constructed with a
    // %HZ% %REVISIT% system ID equal to the stylesheet's URI; with SAX
    // %HZ% %REVISIT% input, it ends up giving that URI to the document.
    // %HZ% %REVISIT% Then, any references to document('') are resolved
    // %HZ% %REVISIT% using the stylesheet's URI.
    // %HZ% %REVISIT% MultiDOM.getDocumentMask is called to verify that
    // %HZ% %REVISIT% a document associated with that URI has not been
    // %HZ% %REVISIT% encountered, and that method ends up returning the
    // %HZ% %REVISIT% mask of the main document, when what we really what
    // %HZ% %REVISIT% is to read the stylesheet itself!
    addDOMAdapter(adapter, false);
}
 

import com.sun.org.apache.xml.internal.dtm.ref.DTMDefaultBase; //导入依赖的package包/类
/**
 * Construct a SAXImpl object using the given block size.
 */
public SAXImpl(XSLTCDTMManager mgr, Source source,
               int dtmIdentity, DTMWSFilter whiteSpaceFilter,
               XMLStringFactory xstringfactory,
               boolean doIndexing, int blocksize,
               boolean buildIdIndex,
               boolean newNameTable)
{
    super(mgr, source, dtmIdentity, whiteSpaceFilter, xstringfactory,
        doIndexing, blocksize, false, buildIdIndex, newNameTable);

    _dtmManager = mgr;
    _size = blocksize;

    // Use a smaller size for the space stack if the blocksize is small
    _xmlSpaceStack = new int[blocksize <= 64 ? 4 : 64];

    /* From DOMBuilder */
    _xmlSpaceStack[0] = DTMDefaultBase.ROOTNODE;

    // If the input source is DOMSource, set the _document field and
    // create the node2Ids table.
    if (source instanceof DOMSource) {
        _hasDOMSource = true;
        DOMSource domsrc = (DOMSource)source;
        Node node = domsrc.getNode();
        if (node instanceof Document) {
            _document = (Document)node;
        }
        else {
            _document = node.getOwnerDocument();
        }
        _node2Ids = new HashMap<>();
    }
}