xalan/serializer/2.7.2 : org/apache/xml/dtm/DTM.java

http://xml.apache.org/xalan-j/: Serializer to write out XML, HTML etc. as a stream of characters from an input DOM or from input SAX events. (The Apache Software Foundation)
The Apache Software License, Version 2.0
/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the  "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/*
 * $Id: DTM.java 468653 2006-10-28 07:07:05Z minchau $
 */
package org.apache.xml.dtm;

import javax.xml.transform.SourceLocator;

import org.apache.xml.utils.XMLString;

DTM is an XML document model expressed as a table
rather than an object tree. It attempts to provide an interface to
a parse tree that has very little object creation. (DTM
implementations may also support incremental construction of the
model, but that's hidden from the DTM API.)
Nodes in the DTM are identified by integer "handles".  A handle must
be unique within a process, and carries both node identification and
document identification.  It must be possible to compare two handles
(and thus their nodes) for identity with "==".
Namespace URLs, local-names, and expanded-names can all be
represented by and tested as integer ID values.  An expanded name
represents (and may or may not directly contain) a combination of
the URL ID, and the local-name ID.  Note that the namespace URL id
can be 0, which should have the meaning that the namespace is null.
For consistancy, zero should not be used for a local-name index. 
Text content of a node is represented by an index and length,
permitting efficient storage such as a shared FastStringBuffer.
The model of the tree, as well as the general navigation model,
is that of XPath 1.0, for the moment.  The model will eventually be
adapted to match the XPath 2.0 data model, XML Schema, and
InfoSet.
DTM does _not_ directly support the W3C's Document Object
Model. However, it attempts to come close enough that an
implementation of DTM can be created that wraps a DOM and vice
versa.
Please Note: The DTM API is still
Subject To Change. This wouldn't affect most
users, but might require updating some extensions.
 The largest change being contemplated is a reconsideration of
the Node Handle representation.  We are still not entirely sure
that an integer packed with two numeric subfields is really the
best solution. It has been suggested that we move up to a Long, to
permit more nodes per document without having to reduce the number
of slots in the DTMManager. There's even been a proposal that we
replace these integers with "cursor" objects containing the
internal node id and a pointer to the actual DTM object; this might
reduce the need to continuously consult the DTMManager to retrieve
the latter, and might provide a useful "hook" back into normal Java
heap management.  But changing this datatype would have huge impact
on Xalan's internals -- especially given Java's lack of C-style
typedefs -- so we won't cut over unless we're convinced the new
solution really would be an improvement!
/**
 * <code>DTM</code> is an XML document model expressed as a table
 * rather than an object tree. It attempts to provide an interface to
 * a parse tree that has very little object creation. (DTM
 * implementations may also support incremental construction of the
 * model, but that's hidden from the DTM API.)
 *
 * <p>Nodes in the DTM are identified by integer "handles".  A handle must
 * be unique within a process, and carries both node identification and
 * document identification.  It must be possible to compare two handles
 * (and thus their nodes) for identity with "==".</p>
 *
 * <p>Namespace URLs, local-names, and expanded-names can all be
 * represented by and tested as integer ID values.  An expanded name
 * represents (and may or may not directly contain) a combination of
 * the URL ID, and the local-name ID.  Note that the namespace URL id
 * can be 0, which should have the meaning that the namespace is null.
 * For consistancy, zero should not be used for a local-name index. </p>
 *
 * <p>Text content of a node is represented by an index and length,
 * permitting efficient storage such as a shared FastStringBuffer.</p>
 *
 * <p>The model of the tree, as well as the general navigation model,
 * is that of XPath 1.0, for the moment.  The model will eventually be
 * adapted to match the XPath 2.0 data model, XML Schema, and
 * InfoSet.</p>
 *
 * <p>DTM does _not_ directly support the W3C's Document Object
 * Model. However, it attempts to come close enough that an
 * implementation of DTM can be created that wraps a DOM and vice
 * versa.</p>
 *
 * <p><strong>Please Note:</strong> The DTM API is still
 * <strong>Subject To Change.</strong> This wouldn't affect most
 * users, but might require updating some extensions.</p>
 *
 * <p> The largest change being contemplated is a reconsideration of
 * the Node Handle representation.  We are still not entirely sure
 * that an integer packed with two numeric subfields is really the
 * best solution. It has been suggested that we move up to a Long, to
 * permit more nodes per document without having to reduce the number
 * of slots in the DTMManager. There's even been a proposal that we
 * replace these integers with "cursor" objects containing the
 * internal node id and a pointer to the actual DTM object; this might
 * reduce the need to continuously consult the DTMManager to retrieve
 * the latter, and might provide a useful "hook" back into normal Java
 * heap management.  But changing this datatype would have huge impact
 * on Xalan's internals -- especially given Java's lack of C-style
 * typedefs -- so we won't cut over unless we're convinced the new
 * solution really would be an improvement!</p>
 * */
public interface DTM
{

  Null node handles are represented by this value.
/**
   * Null node handles are represented by this value.
   */
  public static final int NULL = -1;

  // These nodeType mnemonics and values are deliberately the same as those
  // used by the DOM, for convenient mapping
  //
  // %REVIEW% Should we actually define these as initialized to,
  // eg. org.w3c.dom.Document.ELEMENT_NODE?

  The node is a Root.
/**
   * The node is a <code>Root</code>.
   */
  public static final short ROOT_NODE = 0;
  
  The node is an Element.
/**
   * The node is an <code>Element</code>.
   */
  public static final short ELEMENT_NODE = 1;

  The node is an Attr.
/**
   * The node is an <code>Attr</code>.
   */
  public static final short ATTRIBUTE_NODE = 2;

  The node is a Text node.
/**
   * The node is a <code>Text</code> node.
   */
  public static final short TEXT_NODE = 3;

  The node is a CDATASection.
/**
   * The node is a <code>CDATASection</code>.
   */
  public static final short CDATA_SECTION_NODE = 4;

  The node is an EntityReference.
/**
   * The node is an <code>EntityReference</code>.
   */
  public static final short ENTITY_REFERENCE_NODE = 5;

  The node is an Entity.
/**
   * The node is an <code>Entity</code>.
   */
  public static final short ENTITY_NODE = 6;

  The node is a ProcessingInstruction.
/**
   * The node is a <code>ProcessingInstruction</code>.
   */
  public static final short PROCESSING_INSTRUCTION_NODE = 7;

  The node is a Comment.
/**
   * The node is a <code>Comment</code>.
   */
  public static final short COMMENT_NODE = 8;

  The node is a Document.
/**
   * The node is a <code>Document</code>.
   */
  public static final short DOCUMENT_NODE = 9;

  The node is a DocumentType.
/**
   * The node is a <code>DocumentType</code>.
   */
  public static final short DOCUMENT_TYPE_NODE = 10;

  The node is a DocumentFragment.
/**
   * The node is a <code>DocumentFragment</code>.
   */
  public static final short DOCUMENT_FRAGMENT_NODE = 11;

  The node is a Notation.
/**
   * The node is a <code>Notation</code>.
   */
  public static final short NOTATION_NODE = 12;

  The node is a namespace node. Note that this is not
currently a node type defined by the DOM API.
/**
   * The node is a <code>namespace node</code>. Note that this is not
   * currently a node type defined by the DOM API.
   */
  public static final short NAMESPACE_NODE = 13;
  
  The number of valid nodetypes.
/**
   * The number of valid nodetypes.
   */
  public static final short  NTYPES = 14;

  // ========= DTM Implementation Control Functions. ==============
  // %TBD% RETIRED -- do via setFeature if needed. Remove from impls.
  // public void setParseBlockSize(int blockSizeSuggestion);

  Set an implementation dependent feature.

%REVIEW% Do we really expect to set features on DTMs?
Params: featureId – A feature URL.
state – true if this feature should be on, false otherwise./**
   * Set an implementation dependent feature.
   * <p>
   * %REVIEW% Do we really expect to set features on DTMs?
   *
   * @param featureId A feature URL.
   * @param state true if this feature should be on, false otherwise.
   */
  public void setFeature(String featureId, boolean state);

  Set a run time property for this DTM instance.
Params: property – a String value
value – an Object value/**
   * Set a run time property for this DTM instance.
   *
   * @param property a <code>String</code> value
   * @param value an <code>Object</code> value
   */
  public void setProperty(String property, Object value);

  // ========= Document Navigation Functions =========

  This returns a stateless "traverser", that can navigate over an
XPath axis, though not in document order.
Params: axis – One of Axes.ANCESTORORSELF, etc.
Returns: A DTMAxisIterator, or null if the givin axis isn't supported./**
   * This returns a stateless "traverser", that can navigate over an
   * XPath axis, though not in document order.
   *
   * @param axis One of Axes.ANCESTORORSELF, etc.
   *
   * @return A DTMAxisIterator, or null if the givin axis isn't supported.
   */
  public DTMAxisTraverser getAxisTraverser(final int axis);

  This is a shortcut to the iterators that implement
XPath axes.
Returns a bare-bones iterator that must be initialized
with a start node (using iterator.setStartNode()).
Params: axis – One of Axes.ANCESTORORSELF, etc.
Returns: A DTMAxisIterator, or null if the givin axis isn't supported./**
   * This is a shortcut to the iterators that implement
   * XPath axes.
   * Returns a bare-bones iterator that must be initialized
   * with a start node (using iterator.setStartNode()).
   *
   * @param axis One of Axes.ANCESTORORSELF, etc.
   *
   * @return A DTMAxisIterator, or null if the givin axis isn't supported.
   */
  public DTMAxisIterator getAxisIterator(final int axis);

  Get an iterator that can navigate over an XPath Axis, predicated by
the extended type ID.
Params: axis – 
type – An extended type ID.
Returns: A DTMAxisIterator, or null if the givin axis isn't supported./**
   * Get an iterator that can navigate over an XPath Axis, predicated by
   * the extended type ID.
   *
   * @param axis
   * @param type An extended type ID.
   *
   * @return A DTMAxisIterator, or null if the givin axis isn't supported.
   */
  public DTMAxisIterator getTypedAxisIterator(final int axis, final int type);

  Given a node handle, test if it has child nodes.
 %REVIEW% This is obviously useful at the DOM layer, where it
would permit testing this without having to create a proxy
node. It's less useful in the DTM API, where
(dtm.getFirstChild(nodeHandle)!=DTM.NULL) is just as fast and
almost as self-evident. But it's a convenience, and eases porting
of DOM code to DTM.  
Params: nodeHandle – int Handle of the node.
Returns: int true if the given node has child nodes./**
   * Given a node handle, test if it has child nodes.
   * <p> %REVIEW% This is obviously useful at the DOM layer, where it
   * would permit testing this without having to create a proxy
   * node. It's less useful in the DTM API, where
   * (dtm.getFirstChild(nodeHandle)!=DTM.NULL) is just as fast and
   * almost as self-evident. But it's a convenience, and eases porting
   * of DOM code to DTM.  </p>
   *
   * @param nodeHandle int Handle of the node.
   * @return int true if the given node has child nodes.
   */
  public boolean hasChildNodes(int nodeHandle);

  Given a node handle, get the handle of the node's first child.
Params: nodeHandle – int Handle of the node.
Returns: int DTM node-number of first child,
or DTM.NULL to indicate none exists./**
   * Given a node handle, get the handle of the node's first child.
   *
   * @param nodeHandle int Handle of the node.
   * @return int DTM node-number of first child,
   * or DTM.NULL to indicate none exists.
   */
  public int getFirstChild(int nodeHandle);

  Given a node handle, get the handle of the node's last child.
Params: nodeHandle – int Handle of the node.
Returns: int Node-number of last child,
or DTM.NULL to indicate none exists./**
   * Given a node handle, get the handle of the node's last child.
   *
   * @param nodeHandle int Handle of the node.
   * @return int Node-number of last child,
   * or DTM.NULL to indicate none exists.
   */
  public int getLastChild(int nodeHandle);

  Retrieves an attribute node by local name and namespace URI
%TBD% Note that we currently have no way to support
the DOM's old getAttribute() call, which accesses only the qname.
Params: elementHandle – Handle of the node upon which to look up this attribute.
namespaceURI – The namespace URI of the attribute to
  retrieve, or null.
name – The local name of the attribute to
  retrieve.
Returns: The attribute node handle with the specified name (
  nodeName) or DTM.NULL if there is no such
  attribute./**
   * Retrieves an attribute node by local name and namespace URI
   *
   * %TBD% Note that we currently have no way to support
   * the DOM's old getAttribute() call, which accesses only the qname.
   *
   * @param elementHandle Handle of the node upon which to look up this attribute.
   * @param namespaceURI The namespace URI of the attribute to
   *   retrieve, or null.
   * @param name The local name of the attribute to
   *   retrieve.
   * @return The attribute node handle with the specified name (
   *   <code>nodeName</code>) or <code>DTM.NULL</code> if there is no such
   *   attribute.
   */
  public int getAttributeNode(int elementHandle, String namespaceURI,
                              String name);

  Given a node handle, get the index of the node's first attribute.
Params: nodeHandle – int Handle of the node.
Returns: Handle of first attribute, or DTM.NULL to indicate none exists./**
   * Given a node handle, get the index of the node's first attribute.
   *
   * @param nodeHandle int Handle of the node.
   * @return Handle of first attribute, or DTM.NULL to indicate none exists.
   */
  public int getFirstAttribute(int nodeHandle);

  Given a node handle, get the index of the node's first namespace node.
Params: nodeHandle – handle to node, which should probably be an element
                  node, but need not be.
inScope – true if all namespaces in scope should be
                  returned, false if only the node's own
                  namespace declarations should be returned.
Returns: handle of first namespace,
or DTM.NULL to indicate none exists./**
   * Given a node handle, get the index of the node's first namespace node.
   *
   * @param nodeHandle handle to node, which should probably be an element
   *                   node, but need not be.
   *
   * @param inScope true if all namespaces in scope should be
   *                   returned, false if only the node's own
   *                   namespace declarations should be returned.
   * @return handle of first namespace,
   * or DTM.NULL to indicate none exists.
   */
  public int getFirstNamespaceNode(int nodeHandle, boolean inScope);

  Given a node handle, advance to its next sibling.
Params: nodeHandle – int Handle of the node.
Returns: int Node-number of next sibling,
or DTM.NULL to indicate none exists./**
   * Given a node handle, advance to its next sibling.
   * @param nodeHandle int Handle of the node.
   * @return int Node-number of next sibling,
   * or DTM.NULL to indicate none exists.
   */
  public int getNextSibling(int nodeHandle);

  Given a node handle, find its preceeding sibling.
WARNING: DTM implementations may be asymmetric; in some,
this operation has been resolved by search, and is relatively expensive.
Params: nodeHandle – the id of the node.
Returns: int Node-number of the previous sib,
or DTM.NULL to indicate none exists./**
   * Given a node handle, find its preceeding sibling.
   * WARNING: DTM implementations may be asymmetric; in some,
   * this operation has been resolved by search, and is relatively expensive.
   *
   * @param nodeHandle the id of the node.
   * @return int Node-number of the previous sib,
   * or DTM.NULL to indicate none exists.
   */
  public int getPreviousSibling(int nodeHandle);

  Given a node handle, advance to the next attribute. If an
element, we advance to its first attribute; if an attr, we advance to
the next attr of the same element.
Params: nodeHandle – int Handle of the node.
Returns: int DTM node-number of the resolved attr,
or DTM.NULL to indicate none exists./**
   * Given a node handle, advance to the next attribute. If an
   * element, we advance to its first attribute; if an attr, we advance to
   * the next attr of the same element.
   *
   * @param nodeHandle int Handle of the node.
   * @return int DTM node-number of the resolved attr,
   * or DTM.NULL to indicate none exists.
   */
  public int getNextAttribute(int nodeHandle);

  Given a namespace handle, advance to the next namespace in the same scope
(local or local-plus-inherited, as selected by getFirstNamespaceNode)
Params: baseHandle – handle to original node from where the first child
was relative to (needed to return nodes in document order).
namespaceHandle – handle to node which must be of type
NAMESPACE_NODE.
NEEDSDOC @param inScope
Returns: handle of next namespace,
or DTM.NULL to indicate none exists./**
   * Given a namespace handle, advance to the next namespace in the same scope
   * (local or local-plus-inherited, as selected by getFirstNamespaceNode)
   *
   * @param baseHandle handle to original node from where the first child
   * was relative to (needed to return nodes in document order).
   * @param namespaceHandle handle to node which must be of type
   * NAMESPACE_NODE.
   * NEEDSDOC @param inScope
   * @return handle of next namespace,
   * or DTM.NULL to indicate none exists.
   */
  public int getNextNamespaceNode(int baseHandle, int namespaceHandle,
                                  boolean inScope);

  Given a node handle, find its parent node.
Params: nodeHandle – the id of the node.
Returns: int Node handle of parent,
or DTM.NULL to indicate none exists./**
   * Given a node handle, find its parent node.
   *
   * @param nodeHandle the id of the node.
   * @return int Node handle of parent,
   * or DTM.NULL to indicate none exists.
   */
  public int getParent(int nodeHandle);

  Given a DTM which contains only a single document, 
find the Node Handle of the  Document node. Note 
that if the DTM is configured so it can contain multiple
documents, this call will return the Document currently
under construction -- but may return null if it's between
documents. Generally, you should use getOwnerDocument(nodeHandle)
or getDocumentRoot(nodeHandle) instead.
Returns: int Node handle of document, or DTM.NULL if a shared DTM
can not tell us which Document is currently active./**
   * Given a DTM which contains only a single document, 
   * find the Node Handle of the  Document node. Note 
   * that if the DTM is configured so it can contain multiple
   * documents, this call will return the Document currently
   * under construction -- but may return null if it's between
   * documents. Generally, you should use getOwnerDocument(nodeHandle)
   * or getDocumentRoot(nodeHandle) instead.
   *
   * @return int Node handle of document, or DTM.NULL if a shared DTM
   * can not tell us which Document is currently active.
   */
  public int getDocument();

  Given a node handle, find the owning document node. This version mimics
the behavior of the DOM call by the same name.
Params: nodeHandle – the id of the node.
See Also: getDocumentRoot(int nodeHandle)
Returns: int Node handle of owning document, or DTM.NULL if the node was
a Document./**
   * Given a node handle, find the owning document node. This version mimics
   * the behavior of the DOM call by the same name.
   *
   * @param nodeHandle the id of the node.
   * @return int Node handle of owning document, or DTM.NULL if the node was
   * a Document.
   * @see #getDocumentRoot(int nodeHandle)
   */
  public int getOwnerDocument(int nodeHandle);

  Given a node handle, find the owning document node.
Params: nodeHandle – the id of the node.
See Also: getOwnerDocument(int nodeHandle)
Returns: int Node handle of owning document, or the node itself if it was
a Document. (Note difference from DOM, where getOwnerDocument returns
null for the Document node.)/**
   * Given a node handle, find the owning document node.
   *
   * @param nodeHandle the id of the node.
   * @return int Node handle of owning document, or the node itself if it was
   * a Document. (Note difference from DOM, where getOwnerDocument returns
   * null for the Document node.)
   * @see #getOwnerDocument(int nodeHandle)
   */
  public int getDocumentRoot(int nodeHandle);

  Get the string-value of a node as a String object
(see http://www.w3.org/TR/xpath#data-model
for the definition of a node's string-value).
Params: nodeHandle – The node ID.
Returns: A string object that represents the string-value of the given node./**
   * Get the string-value of a node as a String object
   * (see http://www.w3.org/TR/xpath#data-model
   * for the definition of a node's string-value).
   *
   * @param nodeHandle The node ID.
   *
   * @return A string object that represents the string-value of the given node.
   */
  public XMLString getStringValue(int nodeHandle);

  Get number of character array chunks in
the string-value of a node.
(see http://www.w3.org/TR/xpath#data-model
for the definition of a node's string-value).
Note that a single text node may have multiple text chunks.
Params: nodeHandle – The node ID.
Returns: number of character array chunks in
        the string-value of a node./**
   * Get number of character array chunks in
   * the string-value of a node.
   * (see http://www.w3.org/TR/xpath#data-model
   * for the definition of a node's string-value).
   * Note that a single text node may have multiple text chunks.
   *
   * @param nodeHandle The node ID.
   *
   * @return number of character array chunks in
   *         the string-value of a node.
   */
  public int getStringValueChunkCount(int nodeHandle);

  Get a character array chunk in the string-value of a node.
(see http://www.w3.org/TR/xpath#data-model
for the definition of a node's string-value).
Note that a single text node may have multiple text chunks.
Params: nodeHandle – The node ID.
chunkIndex – Which chunk to get.
startAndLen –  A two-integer array which, upon return, WILL
BE FILLED with values representing the chunk's start position
within the returned character buffer and the length of the chunk.
Returns: The character array buffer within which the chunk occurs,
setting startAndLen's contents as a side-effect./**
   * Get a character array chunk in the string-value of a node.
   * (see http://www.w3.org/TR/xpath#data-model
   * for the definition of a node's string-value).
   * Note that a single text node may have multiple text chunks.
   *
   * @param nodeHandle The node ID.
   * @param chunkIndex Which chunk to get.
   * @param startAndLen  A two-integer array which, upon return, WILL
   * BE FILLED with values representing the chunk's start position
   * within the returned character buffer and the length of the chunk.
   * @return The character array buffer within which the chunk occurs,
   * setting startAndLen's contents as a side-effect.
   */
  public char[] getStringValueChunk(int nodeHandle, int chunkIndex,
                                    int[] startAndLen);

  Given a node handle, return an ID that represents the node's expanded name.
Params: nodeHandle – The handle to the node in question.
Returns: the expanded-name id of the node./**
   * Given a node handle, return an ID that represents the node's expanded name.
   *
   * @param nodeHandle The handle to the node in question.
   *
   * @return the expanded-name id of the node.
   */
  public int getExpandedTypeID(int nodeHandle);

  Given an expanded name, return an ID.  If the expanded-name does not
exist in the internal tables, the entry will be created, and the ID will
be returned.  Any additional nodes that are created that have this
expanded name will use this ID.
NEEDSDOC @param namespace
NEEDSDOC @param localName
NEEDSDOC @param type
Returns: the expanded-name id of the node./**
   * Given an expanded name, return an ID.  If the expanded-name does not
   * exist in the internal tables, the entry will be created, and the ID will
   * be returned.  Any additional nodes that are created that have this
   * expanded name will use this ID.
   *
   * NEEDSDOC @param namespace
   * NEEDSDOC @param localName
   * NEEDSDOC @param type
   *
   * @return the expanded-name id of the node.
   */
  public int getExpandedTypeID(String namespace, String localName, int type);

  Given an expanded-name ID, return the local name part.
Params: ExpandedNameID – an ID that represents an expanded-name.
Returns: String Local name of this node./**
   * Given an expanded-name ID, return the local name part.
   *
   * @param ExpandedNameID an ID that represents an expanded-name.
   * @return String Local name of this node.
   */
  public String getLocalNameFromExpandedNameID(int ExpandedNameID);

  Given an expanded-name ID, return the namespace URI part.
Params: ExpandedNameID – an ID that represents an expanded-name.
Returns: String URI value of this node's namespace, or null if no
namespace was resolved./**
   * Given an expanded-name ID, return the namespace URI part.
   *
   * @param ExpandedNameID an ID that represents an expanded-name.
   * @return String URI value of this node's namespace, or null if no
   * namespace was resolved.
   */
  public String getNamespaceFromExpandedNameID(int ExpandedNameID);

  Given a node handle, return its DOM-style node name. This will
include names such as #text or #document.
Params: nodeHandle – the id of the node.
Returns: String Name of this node, which may be an empty string.
%REVIEW% Document when empty string is possible.../**
   * Given a node handle, return its DOM-style node name. This will
   * include names such as #text or #document.
   *
   * @param nodeHandle the id of the node.
   * @return String Name of this node, which may be an empty string.
   * %REVIEW% Document when empty string is possible...
   */
  public String getNodeName(int nodeHandle);

  Given a node handle, return the XPath node name.  This should be
the name as described by the XPath data model, NOT the DOM-style
name.
Params: nodeHandle – the id of the node.
Returns: String Name of this node./**
   * Given a node handle, return the XPath node name.  This should be
   * the name as described by the XPath data model, NOT the DOM-style
   * name.
   *
   * @param nodeHandle the id of the node.
   * @return String Name of this node.
   */
  public String getNodeNameX(int nodeHandle);

  Given a node handle, return its DOM-style localname.
(As defined in Namespaces, this is the portion of the name after the
prefix, if present, or the whole node name if no prefix exists)
Params: nodeHandle – the id of the node.
Returns: String Local name of this node./**
   * Given a node handle, return its DOM-style localname.
   * (As defined in Namespaces, this is the portion of the name after the
   * prefix, if present, or the whole node name if no prefix exists)
   *
   * @param nodeHandle the id of the node.
   * @return String Local name of this node.
   */
  public String getLocalName(int nodeHandle);

  Given a namespace handle, return the prefix that the namespace decl is
mapping.
Given a node handle, return the prefix used to map to the namespace.
(As defined in Namespaces, this is the portion of the name before any
colon character).
 %REVIEW% Are you sure you want "" for no prefix?  
Params: nodeHandle – the id of the node.
Returns: String prefix of this node's name, or "" if no explicit
namespace prefix was given./**
   * Given a namespace handle, return the prefix that the namespace decl is
   * mapping.
   * Given a node handle, return the prefix used to map to the namespace.
   * (As defined in Namespaces, this is the portion of the name before any
   * colon character).
   *
   * <p> %REVIEW% Are you sure you want "" for no prefix?  </p>
   *
   * @param nodeHandle the id of the node.
   * @return String prefix of this node's name, or "" if no explicit
   * namespace prefix was given.
   */
  public String getPrefix(int nodeHandle);

  Given a node handle, return its DOM-style namespace URI
(As defined in Namespaces, this is the declared URI which this node's
prefix -- or default in lieu thereof -- was mapped to.)
Params: nodeHandle – the id of the node.
Returns: String URI value of this node's namespace, or null if no
namespace was resolved./**
   * Given a node handle, return its DOM-style namespace URI
   * (As defined in Namespaces, this is the declared URI which this node's
   * prefix -- or default in lieu thereof -- was mapped to.)
   * @param nodeHandle the id of the node.
   * @return String URI value of this node's namespace, or null if no
   * namespace was resolved.
   */
  public String getNamespaceURI(int nodeHandle);

  Given a node handle, return its node value. This is mostly
as defined by the DOM, but may ignore some conveniences.

Params: nodeHandle – The node id.
Returns: String Value of this node, or null if not
meaningful for this node type./**
   * Given a node handle, return its node value. This is mostly
   * as defined by the DOM, but may ignore some conveniences.
   * <p>
   * @param nodeHandle The node id.
   * @return String Value of this node, or null if not
   * meaningful for this node type.
   */
  public String getNodeValue(int nodeHandle);

  Given a node handle, return its DOM-style node type.
%REVIEW% Generally, returning short is false economy. Return int?
Params: nodeHandle – The node id.
Returns: int Node type, as per the DOM's Node._NODE constants./**
   * Given a node handle, return its DOM-style node type.
   *
   * <p>%REVIEW% Generally, returning short is false economy. Return int?</p>
   *
   * @param nodeHandle The node id.
   * @return int Node type, as per the DOM's Node._NODE constants.
   */
  public short getNodeType(int nodeHandle);

  Get the depth level of this node in the tree (equals 1 for
a parentless node).
Params: nodeHandle – The node id.
Returns: the number of ancestors, plus one
@xsl.usage internal/**
   * Get the depth level of this node in the tree (equals 1 for
   * a parentless node).
   *
   * @param nodeHandle The node id.
   * @return the number of ancestors, plus one
   * @xsl.usage internal
   */
  public short getLevel(int nodeHandle);

  // ============== Document query functions ==============

  Tests whether DTM DOM implementation implements a specific feature and
that feature is supported by this node.
Params: feature – The name of the feature to test.
version – This is the version number of the feature to test.
  If the version is not
  specified, supporting any version of the feature will cause the
  method to return true.
Returns: Returns true if the specified feature is
  supported on this node, false otherwise./**
   * Tests whether DTM DOM implementation implements a specific feature and
   * that feature is supported by this node.
   * @param feature The name of the feature to test.
   * @param version This is the version number of the feature to test.
   *   If the version is not
   *   specified, supporting any version of the feature will cause the
   *   method to return <code>true</code>.
   * @return Returns <code>true</code> if the specified feature is
   *   supported on this node, <code>false</code> otherwise.
   */
  public boolean isSupported(String feature, String version);

  Return the base URI of the document entity. If it is not known
(because the document was parsed from a socket connection or from
standard input, for example), the value of this property is unknown.
Returns: the document base URI String object or null if unknown./**
   * Return the base URI of the document entity. If it is not known
   * (because the document was parsed from a socket connection or from
   * standard input, for example), the value of this property is unknown.
   *
   * @return the document base URI String object or null if unknown.
   */
  public String getDocumentBaseURI();

  Set the base URI of the document entity.
Params: baseURI – the document base URI String object or null if unknown./**
   * Set the base URI of the document entity.
   *
   * @param baseURI the document base URI String object or null if unknown.
   */
  public void setDocumentBaseURI(String baseURI);

  Return the system identifier of the document entity. If
it is not known, the value of this property is null.
Params: nodeHandle – The node id, which can be any valid node handle.
Returns: the system identifier String object or null if unknown./**
   * Return the system identifier of the document entity. If
   * it is not known, the value of this property is null.
   *
   * @param nodeHandle The node id, which can be any valid node handle.
   * @return the system identifier String object or null if unknown.
   */
  public String getDocumentSystemIdentifier(int nodeHandle);

  Return the name of the character encoding scheme
       in which the document entity is expressed.
Params: nodeHandle – The node id, which can be any valid node handle.
Returns: the document encoding String object./**
   * Return the name of the character encoding scheme
   *        in which the document entity is expressed.
   *
   * @param nodeHandle The node id, which can be any valid node handle.
   * @return the document encoding String object.
   */
  public String getDocumentEncoding(int nodeHandle);

  Return an indication of the standalone status of the document,
       either "yes" or "no". This property is derived from the optional
       standalone document declaration in the XML declaration at the
       beginning of the document entity, and has no value if there is no
       standalone document declaration.
Params: nodeHandle – The node id, which can be any valid node handle.
Returns: the document standalone String object, either "yes", "no", or null./**
   * Return an indication of the standalone status of the document,
   *        either "yes" or "no". This property is derived from the optional
   *        standalone document declaration in the XML declaration at the
   *        beginning of the document entity, and has no value if there is no
   *        standalone document declaration.
   *
   * @param nodeHandle The node id, which can be any valid node handle.
   * @return the document standalone String object, either "yes", "no", or null.
   */
  public String getDocumentStandalone(int nodeHandle);

  Return a string representing the XML version of the document. This
property is derived from the XML declaration optionally present at the
beginning of the document entity, and has no value if there is no XML
declaration.
Params: documentHandle – the document handle
Returns: the document version String object/**
   * Return a string representing the XML version of the document. This
   * property is derived from the XML declaration optionally present at the
   * beginning of the document entity, and has no value if there is no XML
   * declaration.
   *
   * @param documentHandle the document handle
   * @return the document version String object
   */
  public String getDocumentVersion(int documentHandle);

  Return an indication of
whether the processor has read the complete DTD. Its value is a
boolean. If it is false, then certain properties (indicated in their
descriptions below) may be unknown. If it is true, those properties
are never unknown.
Returns: true if all declarations were processed;
        false otherwise./**
   * Return an indication of
   * whether the processor has read the complete DTD. Its value is a
   * boolean. If it is false, then certain properties (indicated in their
   * descriptions below) may be unknown. If it is true, those properties
   * are never unknown.
   *
   * @return <code>true</code> if all declarations were processed;
   *         <code>false</code> otherwise.
   */
  public boolean getDocumentAllDeclarationsProcessed();

    A document type declaration information item has the following properties:
    1. [system identifier] The system identifier of the external subset, if
       it exists. Otherwise this property has no value.
Returns: the system identifier String object, or null if there is none./**
   *   A document type declaration information item has the following properties:
   *
   *     1. [system identifier] The system identifier of the external subset, if
   *        it exists. Otherwise this property has no value.
   *
   * @return the system identifier String object, or null if there is none.
   */
  public String getDocumentTypeDeclarationSystemIdentifier();

  Return the public identifier of the external subset,
normalized as described in 4.2.2 External Entities [XML]. If there is
no external subset or if it has no public identifier, this property
has no value.
Returns: the public identifier String object, or null if there is none./**
   * Return the public identifier of the external subset,
   * normalized as described in 4.2.2 External Entities [XML]. If there is
   * no external subset or if it has no public identifier, this property
   * has no value.
   *
   * @return the public identifier String object, or null if there is none.
   */
  public String getDocumentTypeDeclarationPublicIdentifier();

  Returns the Element whose ID is given by
elementId. If no such element exists, returns
DTM.NULL. Behavior is not defined if more than one element
has this ID. Attributes (including those
with the name "ID") are not of type ID unless so defined by DTD/Schema
information available to the DTM implementation.
Implementations that do not know whether attributes are of type ID or
not are expected to return DTM.NULL.
%REVIEW% Presumably IDs are still scoped to a single document,
and this operation searches only within a single document, right?
Wouldn't want collisions between DTMs in the same process.
Params: elementId – The unique id value for an element.
Returns: The handle of the matching element./**
   * Returns the <code>Element</code> whose <code>ID</code> is given by
   * <code>elementId</code>. If no such element exists, returns
   * <code>DTM.NULL</code>. Behavior is not defined if more than one element
   * has this <code>ID</code>. Attributes (including those
   * with the name "ID") are not of type ID unless so defined by DTD/Schema
   * information available to the DTM implementation.
   * Implementations that do not know whether attributes are of type ID or
   * not are expected to return <code>DTM.NULL</code>.
   *
   * <p>%REVIEW% Presumably IDs are still scoped to a single document,
   * and this operation searches only within a single document, right?
   * Wouldn't want collisions between DTMs in the same process.</p>
   *
   * @param elementId The unique <code>id</code> value for an element.
   * @return The handle of the matching element.
   */
  public int getElementById(String elementId);

  The getUnparsedEntityURI function returns the URI of the unparsed
entity with the specified name in the same document as the context
node (see [3.3 Unparsed Entities]). It returns the empty string if
there is no such entity.

XML processors may choose to use the System Identifier (if one
is provided) to resolve the entity, rather than the URI in the
Public Identifier. The details are dependent on the processor, and
we would have to support some form of plug-in resolver to handle
this properly. Currently, we simply return the System Identifier if
present, and hope that it a usable URI or that our caller can
map it to one.
%REVIEW% Resolve Public Identifiers... or consider changing function name.

If we find a relative URI
reference, XML expects it to be resolved in terms of the base URI
of the document. The DOM doesn't do that for us, and it isn't
entirely clear whether that should be done here; currently that's
pushed up to a higher level of our application. (Note that DOM Level
1 didn't store the document's base URI.)
%REVIEW% Consider resolving Relative URIs.

(The DOM's statement that "An XML processor may choose to
completely expand entities before the structure model is passed
to the DOM" refers only to parsed entities, not unparsed, and hence
doesn't affect this function.)
Params: name – A string containing the Entity Name of the unparsed
entity.
Returns: String containing the URI of the Unparsed Entity, or an
empty string if no such entity exists./**
   * The getUnparsedEntityURI function returns the URI of the unparsed
   * entity with the specified name in the same document as the context
   * node (see [3.3 Unparsed Entities]). It returns the empty string if
   * there is no such entity.
   * <p>
   * XML processors may choose to use the System Identifier (if one
   * is provided) to resolve the entity, rather than the URI in the
   * Public Identifier. The details are dependent on the processor, and
   * we would have to support some form of plug-in resolver to handle
   * this properly. Currently, we simply return the System Identifier if
   * present, and hope that it a usable URI or that our caller can
   * map it to one.
   * %REVIEW% Resolve Public Identifiers... or consider changing function name.
   * <p>
   * If we find a relative URI
   * reference, XML expects it to be resolved in terms of the base URI
   * of the document. The DOM doesn't do that for us, and it isn't
   * entirely clear whether that should be done here; currently that's
   * pushed up to a higher level of our application. (Note that DOM Level
   * 1 didn't store the document's base URI.)
   * %REVIEW% Consider resolving Relative URIs.
   * <p>
   * (The DOM's statement that "An XML processor may choose to
   * completely expand entities before the structure model is passed
   * to the DOM" refers only to parsed entities, not unparsed, and hence
   * doesn't affect this function.)
   *
   * @param name A string containing the Entity Name of the unparsed
   * entity.
   *
   * @return String containing the URI of the Unparsed Entity, or an
   * empty string if no such entity exists.
   */
  public String getUnparsedEntityURI(String name);

  // ============== Boolean methods ================

  Return true if the xsl:strip-space or xsl:preserve-space was processed
during construction of the document contained in this DTM.
NEEDSDOC ($objectName$) @return
/**
   * Return true if the xsl:strip-space or xsl:preserve-space was processed
   * during construction of the document contained in this DTM.
   *
   * NEEDSDOC ($objectName$) @return
   */
  public boolean supportsPreStripping();

  Figure out whether nodeHandle2 should be considered as being later
in the document than nodeHandle1, in Document Order as defined
by the XPath model. This may not agree with the ordering defined
by other XML applications.

There are some cases where ordering isn't defined, and neither are
the results of this function -- though we'll generally return true.

%REVIEW% Make sure this does the right thing with attribute nodes!!!

%REVIEW% Consider renaming for clarity. Perhaps isDocumentOrder(a,b)?
Params: firstNodeHandle – DOM Node to perform position comparison on.
secondNodeHandle – DOM Node to perform position comparison on.
Returns: false if secondNode comes before firstNode, otherwise return true.
You can think of this as
(firstNode.documentOrderPosition <= secondNode.documentOrderPosition)./**
   * Figure out whether nodeHandle2 should be considered as being later
   * in the document than nodeHandle1, in Document Order as defined
   * by the XPath model. This may not agree with the ordering defined
   * by other XML applications.
   * <p>
   * There are some cases where ordering isn't defined, and neither are
   * the results of this function -- though we'll generally return true.
   * <p>
   * %REVIEW% Make sure this does the right thing with attribute nodes!!!
   * <p>
   * %REVIEW% Consider renaming for clarity. Perhaps isDocumentOrder(a,b)?
   *
   * @param firstNodeHandle DOM Node to perform position comparison on.
   * @param secondNodeHandle DOM Node to perform position comparison on.
   *
   * @return false if secondNode comes before firstNode, otherwise return true.
   * You can think of this as
   * <code>(firstNode.documentOrderPosition &lt;= secondNode.documentOrderPosition)</code>.
   */
  public boolean isNodeAfter(int firstNodeHandle, int secondNodeHandle);

  2. [element content whitespace] A boolean indicating whether a
text node represents white space appearing within element content
(see [XML], 2.10 "White Space Handling").  Note that validating
XML processors are required by XML 1.0 to provide this
information... but that DOM Level 2 did not support it, since it
depends on knowledge of the DTD which DOM2 could not guarantee
would be available.

If there is no declaration for the containing element, an XML
processor must assume that the whitespace could be meaningful and
return false. If no declaration has been read, but the [all
declarations processed] property of the document information item
is false (so there may be an unread declaration), then the value
of this property is indeterminate for white space characters and
should probably be reported as false. It is always false for text
nodes that contain anything other than (or in addition to) white
space.

Note too that it always returns false for non-Text nodes.

%REVIEW% Joe wants to rename this isWhitespaceInElementContent() for clarity
Params: nodeHandle – the node ID.
Returns: true if the node definitely represents whitespace in
element content; false otherwise./**
   * 2. [element content whitespace] A boolean indicating whether a
   * text node represents white space appearing within element content
   * (see [XML], 2.10 "White Space Handling").  Note that validating
   * XML processors are required by XML 1.0 to provide this
   * information... but that DOM Level 2 did not support it, since it
   * depends on knowledge of the DTD which DOM2 could not guarantee
   * would be available.
   * <p>
   * If there is no declaration for the containing element, an XML
   * processor must assume that the whitespace could be meaningful and
   * return false. If no declaration has been read, but the [all
   * declarations processed] property of the document information item
   * is false (so there may be an unread declaration), then the value
   * of this property is indeterminate for white space characters and
   * should probably be reported as false. It is always false for text
   * nodes that contain anything other than (or in addition to) white
   * space.
   * <p>
   * Note too that it always returns false for non-Text nodes.
   * <p>
   * %REVIEW% Joe wants to rename this isWhitespaceInElementContent() for clarity
   *
   * @param nodeHandle the node ID.
   * @return <code>true</code> if the node definitely represents whitespace in
   * element content; <code>false</code> otherwise.
   */
  public boolean isCharacterElementContentWhitespace(int nodeHandle);

     10. [all declarations processed] This property is not strictly speaking
       part of the infoset of the document. Rather it is an indication of
       whether the processor has read the complete DTD. Its value is a
       boolean. If it is false, then certain properties (indicated in their
       descriptions below) may be unknown. If it is true, those properties
       are never unknown.
Params: documentHandle – A node handle that must identify a document.
Returns: true if all declarations were processed;
        false otherwise./**
   *    10. [all declarations processed] This property is not strictly speaking
   *        part of the infoset of the document. Rather it is an indication of
   *        whether the processor has read the complete DTD. Its value is a
   *        boolean. If it is false, then certain properties (indicated in their
   *        descriptions below) may be unknown. If it is true, those properties
   *        are never unknown.
   *
   * @param documentHandle A node handle that must identify a document.
   * @return <code>true</code> if all declarations were processed;
   *         <code>false</code> otherwise.
   */
  public boolean isDocumentAllDeclarationsProcessed(int documentHandle);

      5. [specified] A flag indicating whether this attribute was actually
       specified in the start-tag of its element, or was defaulted from the
       DTD (or schema).
Params: attributeHandle – The attribute handle
Returns: true if the attribute was specified;
        false if it was defaulted or the handle doesn't
           refer to an attribute node./**
   *     5. [specified] A flag indicating whether this attribute was actually
   *        specified in the start-tag of its element, or was defaulted from the
   *        DTD (or schema).
   *
   * @param attributeHandle The attribute handle
   * @return <code>true</code> if the attribute was specified;
   *         <code>false</code> if it was defaulted or the handle doesn't
   *            refer to an attribute node.
   */
  public boolean isAttributeSpecified(int attributeHandle);

  // ========== Direct SAX Dispatch, for optimization purposes ========

  Directly call the
characters method on the passed ContentHandler for the
string-value of the given node (see http://www.w3.org/TR/xpath#data-model
for the definition of a node's string-value). Multiple calls to the
ContentHandler's characters methods may well occur for a single call to
this method.
Params: nodeHandle – The node ID.
ch – A non-null reference to a ContentHandler.
normalize – true if the content should be normalized according to
the rules for the XPath
normalize-space
function.
Throws: SAXException – /**
   * Directly call the
   * characters method on the passed ContentHandler for the
   * string-value of the given node (see http://www.w3.org/TR/xpath#data-model
   * for the definition of a node's string-value). Multiple calls to the
   * ContentHandler's characters methods may well occur for a single call to
   * this method.
   *
   * @param nodeHandle The node ID.
   * @param ch A non-null reference to a ContentHandler.
   * @param normalize true if the content should be normalized according to
   * the rules for the XPath
   * <a href="http://www.w3.org/TR/xpath#function-normalize-space">normalize-space</a>
   * function.
   *
   * @throws org.xml.sax.SAXException
   */
  public void dispatchCharactersEvents(
    int nodeHandle, org.xml.sax.ContentHandler ch, boolean normalize)
      throws org.xml.sax.SAXException;

  Directly create SAX parser events representing the XML content of
a DTM subtree. This is a "serialize" operation.
Params: nodeHandle – The node ID.
ch – A non-null reference to a ContentHandler.
Throws: SAXException – /**
   * Directly create SAX parser events representing the XML content of
   * a DTM subtree. This is a "serialize" operation.
   *
   * @param nodeHandle The node ID.
   * @param ch A non-null reference to a ContentHandler.
   *
   * @throws org.xml.sax.SAXException
   */
  public void dispatchToEvents(int nodeHandle, org.xml.sax.ContentHandler ch)
    throws org.xml.sax.SAXException;

  Return an DOM node for the given node.
Params: nodeHandle – The node ID.
Returns: A node representation of the DTM node./**
   * Return an DOM node for the given node.
   *
   * @param nodeHandle The node ID.
   *
   * @return A node representation of the DTM node.
   */
  public org.w3c.dom.Node getNode(int nodeHandle);

  // ==== Construction methods (may not be supported by some implementations!) =====
  // %REVIEW% What response occurs if not supported?

  Returns: true iff we're building this model incrementally (eg
we're partnered with a CoroutineParser) and thus require that the
transformation and the parse run simultaneously. Guidance to the
DTMManager./**
   * @return true iff we're building this model incrementally (eg
   * we're partnered with a CoroutineParser) and thus require that the
   * transformation and the parse run simultaneously. Guidance to the
   * DTMManager.
   */
  public boolean needsTwoThreads();

  // %REVIEW% Do these appends make any sense, should we support a
  // wider set of methods (like the "append" methods in the
  // current DTMDocumentImpl draft), or should we just support SAX
  // listener interfaces?  Should it be a separate interface to
  // make that distinction explicit?

  Return this DTM's content handler, if it has one.
Returns: null if this model doesn't respond to SAX events./**
   * Return this DTM's content handler, if it has one.
   *
   * @return null if this model doesn't respond to SAX events.
   */
  public org.xml.sax.ContentHandler getContentHandler();

  Return this DTM's lexical handler, if it has one.
%REVIEW% Should this return null if constrution already done/begun?
Returns: null if this model doesn't respond to lexical SAX events./**
   * Return this DTM's lexical handler, if it has one.
   *
   * %REVIEW% Should this return null if constrution already done/begun?
   *
   * @return null if this model doesn't respond to lexical SAX events.
   */
  public org.xml.sax.ext.LexicalHandler getLexicalHandler();

  Return this DTM's EntityResolver, if it has one.
Returns: null if this model doesn't respond to SAX entity ref events./**
   * Return this DTM's EntityResolver, if it has one.
   *
   * @return null if this model doesn't respond to SAX entity ref events.
   */
  public org.xml.sax.EntityResolver getEntityResolver();

  Return this DTM's DTDHandler, if it has one.
Returns: null if this model doesn't respond to SAX dtd events./**
   * Return this DTM's DTDHandler, if it has one.
   *
   * @return null if this model doesn't respond to SAX dtd events.
   */
  public org.xml.sax.DTDHandler getDTDHandler();

  Return this DTM's ErrorHandler, if it has one.
Returns: null if this model doesn't respond to SAX error events./**
   * Return this DTM's ErrorHandler, if it has one.
   *
   * @return null if this model doesn't respond to SAX error events.
   */
  public org.xml.sax.ErrorHandler getErrorHandler();

  Return this DTM's DeclHandler, if it has one.
Returns: null if this model doesn't respond to SAX Decl events./**
   * Return this DTM's DeclHandler, if it has one.
   *
   * @return null if this model doesn't respond to SAX Decl events.
   */
  public org.xml.sax.ext.DeclHandler getDeclHandler();

  Append a child to "the end of the document". Please note that
the node is always cloned in a base DTM, since our basic behavior
is immutable so nodes can't be removed from their previous
location.
 %REVIEW%  DTM maintains an insertion cursor which
performs a depth-first tree walk as nodes come in, and this operation
is really equivalent to:
   insertionCursor.appendChild(document.importNode(newChild)))
where the insert point is the last element that was appended (or
the last one popped back to by an end-element operation).
Params: newChild – Must be a valid new node handle.
clone – true if the child should be cloned into the document.
cloneDepth – if the clone argument is true, specifies that the
                  clone should include all it's children./**
   * Append a child to "the end of the document". Please note that
   * the node is always cloned in a base DTM, since our basic behavior
   * is immutable so nodes can't be removed from their previous
   * location.
   *
   * <p> %REVIEW%  DTM maintains an insertion cursor which
   * performs a depth-first tree walk as nodes come in, and this operation
   * is really equivalent to:
   *    insertionCursor.appendChild(document.importNode(newChild)))
   * where the insert point is the last element that was appended (or
   * the last one popped back to by an end-element operation).</p>
   *
   * @param newChild Must be a valid new node handle.
   * @param clone true if the child should be cloned into the document.
   * @param cloneDepth if the clone argument is true, specifies that the
   *                   clone should include all it's children.
   */
  public void appendChild(int newChild, boolean clone, boolean cloneDepth);

  Append a text node child that will be constructed from a string,
to the end of the document. Behavior is otherwise like appendChild().
Params: str – Non-null reference to a string./**
   * Append a text node child that will be constructed from a string,
   * to the end of the document. Behavior is otherwise like appendChild().
   *
   * @param str Non-null reference to a string.
   */
  public void appendTextChild(String str);

  Get the location of a node in the source document.
Params: node – an int value
Returns: a SourceLocator value or null if no location
is available/**
   * Get the location of a node in the source document.
   *
   * @param node an <code>int</code> value
   * @return a <code>SourceLocator</code> value or null if no location
   * is available
   */
  public SourceLocator getSourceLocatorFor(int node);

  As the DTM is registered with the DTMManager, this method
will be called. This will give the DTM implementation a
chance to initialize any subsystems that are required to
build the DTM
/**
   * As the DTM is registered with the DTMManager, this method
   * will be called. This will give the DTM implementation a
   * chance to initialize any subsystems that are required to
   * build the DTM
   */
  public void documentRegistration();

  As documents are released from the DTMManager, the DTM implementation
will be notified of the event. This will allow the DTM implementation
to shutdown any subsystem activity that may of been assoiated with
the active DTM Implementation.
/**
   * As documents are released from the DTMManager, the DTM implementation
   * will be notified of the event. This will allow the DTM implementation
   * to shutdown any subsystem activity that may of been assoiated with
   * the active DTM Implementation.
   */

   public void documentRelease();

   Migrate a DTM built with an old DTMManager to a new DTMManager.
After the migration, the new DTMManager will treat the DTM as
one that is built by itself.
This is used to support DTM sharing between multiple transformations.
Params: manager – the DTMManager/**
    * Migrate a DTM built with an old DTMManager to a new DTMManager.
    * After the migration, the new DTMManager will treat the DTM as
    * one that is built by itself.
    * This is used to support DTM sharing between multiple transformations.
    * @param manager the DTMManager
    */
   public void migrateTo(DTMManager manager);
}
Params:	axis – One of Axes.ANCESTORORSELF, etc.
Returns:	A DTMAxisIterator, or null if the givin axis isn't supported.
Params:	axis – type – An extended type ID.
Returns:	A DTMAxisIterator, or null if the givin axis isn't supported.
Params:	nodeHandle – int Handle of the node.
Returns:	int true if the given node has child nodes.
Params:	elementHandle – Handle of the node upon which to look up this attribute. namespaceURI – The namespace URI of the attribute to retrieve, or null. name – The local name of the attribute to retrieve.
Returns:	The attribute node handle with the specified name ( `nodeName`) or `DTM.NULL` if there is no such attribute.
Params:	nodeHandle – handle to node, which should probably be an element node, but need not be. inScope – true if all namespaces in scope should be returned, false if only the node's own namespace declarations should be returned.
Returns:	handle of first namespace, or DTM.NULL to indicate none exists.
Params:	nodeHandle – the id of the node.
Returns:	int Node-number of the previous sib, or DTM.NULL to indicate none exists.
Params:	baseHandle – handle to original node from where the first child was relative to (needed to return nodes in document order). namespaceHandle – handle to node which must be of type NAMESPACE_NODE. NEEDSDOC @param inScope
Returns:	handle of next namespace, or DTM.NULL to indicate none exists.
Params:	nodeHandle – the id of the node.
See Also:	getDocumentRoot(int nodeHandle)
Returns:	int Node handle of owning document, or DTM.NULL if the node was a Document.
Params:	nodeHandle – The node ID.
Returns:	A string object that represents the string-value of the given node.
Params:	nodeHandle – The node ID. chunkIndex – Which chunk to get. startAndLen – A two-integer array which, upon return, WILL BE FILLED with values representing the chunk's start position within the returned character buffer and the length of the chunk.
Returns:	The character array buffer within which the chunk occurs, setting startAndLen's contents as a side-effect.
Params:	nodeHandle – The handle to the node in question.
Returns:	the expanded-name id of the node.
Params:	ExpandedNameID – an ID that represents an expanded-name.
Returns:	String Local name of this node.
Params:	feature – The name of the feature to test. version – This is the version number of the feature to test. If the version is not specified, supporting any version of the feature will cause the method to return `true`.
Returns:	Returns `true` if the specified feature is supported on this node, `false` otherwise.
Params:	nodeHandle – The node id, which can be any valid node handle.
Returns:	the system identifier String object or null if unknown.
Params:	documentHandle – the document handle
Returns:	the document version String object
Params:	elementId – The unique `id` value for an element.
Returns:	The handle of the matching element.
Params:	name – A string containing the Entity Name of the unparsed entity.
Returns:	String containing the URI of the Unparsed Entity, or an empty string if no such entity exists.
Params:	firstNodeHandle – DOM Node to perform position comparison on. secondNodeHandle – DOM Node to perform position comparison on.
Returns:	false if secondNode comes before firstNode, otherwise return true. You can think of this as `(firstNode.documentOrderPosition <= secondNode.documentOrderPosition)`.
Params:	documentHandle – A node handle that must identify a document.
Returns:	`true` if all declarations were processed; `false` otherwise.
Params:	attributeHandle – The attribute handle
Returns:	`true` if the attribute was specified; `false` if it was defaulted or the handle doesn't refer to an attribute node.
/

xalan/ serializer/ 2.7.2/ org/apache/xml/dtm/DTM.java
