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/*
* 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.
*/
package org.apache.xerces.dom;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.lang.reflect.Constructor;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Map;
import java.util.WeakHashMap;
import org.apache.xerces.util.URI;
import org.apache.xerces.util.XML11Char;
import org.apache.xerces.util.XMLChar;
import org.apache.xerces.xni.NamespaceContext;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.Comment;
import org.w3c.dom.DOMConfiguration;
import org.w3c.dom.DOMException;
import org.w3c.dom.DOMImplementation;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentFragment;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
import org.w3c.dom.Entity;
import org.w3c.dom.EntityReference;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.Notation;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
import org.w3c.dom.UserDataHandler;
import org.w3c.dom.events.Event;
import org.w3c.dom.events.EventListener;
import org.w3c.dom.ls.DOMImplementationLS;
import org.w3c.dom.ls.LSSerializer;
/**
* The Document interface represents the entire HTML or XML document.
* Conceptually, it is the root of the document tree, and provides the
* primary access to the document's data.
*
* Since elements, text nodes, comments, processing instructions,
* etc. cannot exist outside the context of a Document, the Document
* interface also contains the factory methods needed to create these
* objects. The Node objects created have a ownerDocument attribute
* which associates them with the Document within whose context they
* were created.
*
* The CoreDocumentImpl class only implements the DOM Core. Additional modules
* are supported by the more complete DocumentImpl subclass.
*
* Note: When any node in the document is serialized, the
* entire document is serialized along with it.
*
* @xerces.internal
*
* @author Arnaud Le Hors, IBM
* @author Joe Kesselman, IBM
* @author Andy Clark, IBM
* @author Ralf Pfeiffer, IBM
* @version $Id: CoreDocumentImpl.java 950601 2010-06-02 15:38:55Z mrglavas $
* @since PR-DOM-Level-1-19980818.
*/
public class CoreDocumentImpl
extends ParentNode implements Document {
/**TODO::
* 1. Change XML11Char method names similar to XMLChar. That will prevent lot
* of dirty version checking code.
*
* 2. IMO during cloneNode qname/isXMLName check should not be made.
*/
//
// Constants
//
/** Serialization version. */
static final long serialVersionUID = 0;
//
// Data
//
// document information
/** Document type. */
protected DocumentTypeImpl docType;
/** Document element. */
protected ElementImpl docElement;
/** NodeListCache free list */
transient NodeListCache fFreeNLCache;
/**Experimental DOM Level 3 feature: Document encoding */
protected String encoding;
/**Experimental DOM Level 3 feature: Document actualEncoding */
protected String actualEncoding;
/**Experimental DOM Level 3 feature: Document version */
protected String version;
/**Experimental DOM Level 3 feature: Document standalone */
protected boolean standalone;
/**Experimental DOM Level 3 feature: documentURI */
protected String fDocumentURI;
/** Table for user data attached to this document nodes. */
protected Map userData; // serialized as Hashtable
/** Identifiers. */
protected Hashtable identifiers;
// DOM Level 3: normalizeDocument
transient DOMNormalizer domNormalizer = null;
transient DOMConfigurationImpl fConfiguration = null;
// support of XPath API
transient Object fXPathEvaluator = null;
/** Table for quick check of child insertion. */
private final static int[] kidOK;
/**
* Number of alterations made to this document since its creation.
* Serves as a "dirty bit" so that live objects such as NodeList can
* recognize when an alteration has been made and discard its cached
* state information.
*
* Any method that alters the tree structure MUST cause or be
* accompanied by a call to changed(), to inform it that any outstanding
* NodeLists may have to be updated.
*
* (Required because NodeList is simultaneously "live" and integer-
* indexed -- a bad decision in the DOM's design.)
*
* Note that changes which do not affect the tree's structure -- changing
* the node's name, for example -- do _not_ have to call changed().
*
* Alternative implementation would be to use a cryptographic
* Digest value rather than a count. This would have the advantage that
* "harmless" changes (those producing equal() trees) would not force
* NodeList to resynchronize. Disadvantage is that it's slightly more prone
* to "false negatives", though that's the difference between "wildly
* unlikely" and "absurdly unlikely". IF we start maintaining digests,
* we should consider taking advantage of them.
*
* Note: This used to be done a node basis, so that we knew what
* subtree changed. But since only DeepNodeList really use this today,
* the gain appears to be really small compared to the cost of having
* an int on every (parent) node plus having to walk up the tree all the
* way to the root to mark the branch as changed everytime a node is
* changed.
* So we now have a single counter global to the document. It means that
* some objects may flush their cache more often than necessary, but this
* makes nodes smaller and only the document needs to be marked as changed.
*/
protected int changes = 0;
// experimental
/** Allow grammar access. */
protected boolean allowGrammarAccess;
/** Bypass error checking. */
protected boolean errorChecking = true;
//Did version change at any point when the document was created ?
//this field helps us to optimize when normalizingDocument.
protected boolean xmlVersionChanged = false ;
/** The following are required for compareDocumentPosition
*/
// Document number. Documents are ordered across the implementation using
// positive integer values. Documents are assigned numbers on demand.
private int documentNumber=0;
// Node counter and table. Used to assign numbers to nodes for this
// document. Node number values are negative integers. Nodes are
// assigned numbers on demand.
private int nodeCounter = 0;
private Map nodeTable; // serialized as Hashtable
private boolean xml11Version = false; //by default 1.0
//
// Static initialization
//
static {
kidOK = new int[13];
kidOK[DOCUMENT_NODE] =
1 << ELEMENT_NODE | 1 << PROCESSING_INSTRUCTION_NODE |
1 << COMMENT_NODE | 1 << DOCUMENT_TYPE_NODE;
kidOK[DOCUMENT_FRAGMENT_NODE] =
kidOK[ENTITY_NODE] =
kidOK[ENTITY_REFERENCE_NODE] =
kidOK[ELEMENT_NODE] =
1 << ELEMENT_NODE | 1 << PROCESSING_INSTRUCTION_NODE |
1 << COMMENT_NODE | 1 << TEXT_NODE |
1 << CDATA_SECTION_NODE | 1 << ENTITY_REFERENCE_NODE ;
kidOK[ATTRIBUTE_NODE] =
1 << TEXT_NODE | 1 << ENTITY_REFERENCE_NODE;
kidOK[DOCUMENT_TYPE_NODE] =
kidOK[PROCESSING_INSTRUCTION_NODE] =
kidOK[COMMENT_NODE] =
kidOK[TEXT_NODE] =
kidOK[CDATA_SECTION_NODE] =
kidOK[NOTATION_NODE] =
0;
} // static
//
// Constructors
//
/**
* NON-DOM: Actually creating a Document is outside the DOM's spec,
* since it has to operate in terms of a particular implementation.
*/
public CoreDocumentImpl() {
this(false);
}
/** Constructor. */
public CoreDocumentImpl(boolean grammarAccess) {
super(null);
ownerDocument = this;
allowGrammarAccess = grammarAccess;
}
/**
* For DOM2 support.
* The createDocument factory method is in DOMImplementation.
*/
public CoreDocumentImpl(DocumentType doctype) {
this(doctype, false);
}
/** For DOM2 support. */
public CoreDocumentImpl(DocumentType doctype, boolean grammarAccess) {
this(grammarAccess);
if (doctype != null) {
DocumentTypeImpl doctypeImpl;
try {
doctypeImpl = (DocumentTypeImpl) doctype;
} catch (ClassCastException e) {
String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "WRONG_DOCUMENT_ERR", null);
throw new DOMException(DOMException.WRONG_DOCUMENT_ERR, msg);
}
doctypeImpl.ownerDocument = this;
appendChild(doctype);
}
}
//
// Node methods
//
// even though ownerDocument refers to this in this implementation
// the DOM Level 2 spec says it must be null, so make it appear so
final public Document getOwnerDocument() {
return null;
}
/** Returns the node type. */
public short getNodeType() {
return Node.DOCUMENT_NODE;
}
/** Returns the node name. */
public String getNodeName() {
return "#document";
}
/**
* Deep-clone a document, including fixing ownerDoc for the cloned
* children. Note that this requires bypassing the WRONG_DOCUMENT_ERR
* protection. I've chosen to implement it by calling importNode
* which is DOM Level 2.
*
* @return org.w3c.dom.Node
* @param deep boolean, iff true replicate children
*/
public Node cloneNode(boolean deep) {
CoreDocumentImpl newdoc = new CoreDocumentImpl();
callUserDataHandlers(this, newdoc, UserDataHandler.NODE_CLONED);
cloneNode(newdoc, deep);
return newdoc;
} // cloneNode(boolean):Node
/**
* internal method to share code with subclass
**/
protected void cloneNode(CoreDocumentImpl newdoc, boolean deep) {
// clone the children by importing them
if (needsSyncChildren()) {
synchronizeChildren();
}
if (deep) {
HashMap reversedIdentifiers = null;
if (identifiers != null) {
// Build a reverse mapping from element to identifier.
reversedIdentifiers = new HashMap();
Iterator entries = identifiers.entrySet().iterator();
while (entries.hasNext()) {
Map.Entry entry = (Map.Entry) entries.next();
Object elementId = entry.getKey();
Object elementNode = entry.getValue();
reversedIdentifiers.put(elementNode, elementId);
}
}
// Copy children into new document.
for (ChildNode kid = firstChild; kid != null;
kid = kid.nextSibling) {
newdoc.appendChild(newdoc.importNode(kid, true, true,
reversedIdentifiers));
}
}
// experimental
newdoc.allowGrammarAccess = allowGrammarAccess;
newdoc.errorChecking = errorChecking;
} // cloneNode(CoreDocumentImpl,boolean):void
/**
* Since a Document may contain at most one top-level Element child,
* and at most one DocumentType declaraction, we need to subclass our
* add-children methods to implement this constraint.
* Since appendChild() is implemented as insertBefore(,null),
* altering the latter fixes both.
*
* While I'm doing so, I've taken advantage of the opportunity to
* cache documentElement and docType so we don't have to
* search for them.
*
* REVISIT: According to the spec it is not allowed to alter neither the
* document element nor the document type in any way
*/
public Node insertBefore(Node newChild, Node refChild)
throws DOMException {
// Only one such child permitted
int type = newChild.getNodeType();
if (errorChecking) {
if (needsSyncChildren()) {
synchronizeChildren();
}
if((type == Node.ELEMENT_NODE && docElement != null) ||
(type == Node.DOCUMENT_TYPE_NODE && docType != null)) {
String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "HIERARCHY_REQUEST_ERR", null);
throw new DOMException(DOMException.HIERARCHY_REQUEST_ERR, msg);
}
}
// Adopt orphan doctypes
if (newChild.getOwnerDocument() == null &&
newChild instanceof DocumentTypeImpl) {
((DocumentTypeImpl) newChild).ownerDocument = this;
}
super.insertBefore(newChild,refChild);
// If insert succeeded, cache the kid appropriately
if (type == Node.ELEMENT_NODE) {
docElement = (ElementImpl)newChild;
}
else if (type == Node.DOCUMENT_TYPE_NODE) {
docType = (DocumentTypeImpl)newChild;
}
return newChild;
} // insertBefore(Node,Node):Node
/**
* Since insertBefore caches the docElement (and, currently, docType),
* removeChild has to know how to undo the cache
*
* REVISIT: According to the spec it is not allowed to alter neither the
* document element nor the document type in any way
*/
public Node removeChild(Node oldChild) throws DOMException {
super.removeChild(oldChild);
// If remove succeeded, un-cache the kid appropriately
int type = oldChild.getNodeType();
if(type == Node.ELEMENT_NODE) {
docElement = null;
}
else if (type == Node.DOCUMENT_TYPE_NODE) {
docType = null;
}
return oldChild;
} // removeChild(Node):Node
/**
* Since we cache the docElement (and, currently, docType),
* replaceChild has to update the cache
*
* REVISIT: According to the spec it is not allowed to alter neither the
* document element nor the document type in any way
*/
public Node replaceChild(Node newChild, Node oldChild)
throws DOMException {
// Adopt orphan doctypes
if (newChild.getOwnerDocument() == null &&
newChild instanceof DocumentTypeImpl) {
((DocumentTypeImpl) newChild).ownerDocument = this;
}
if (errorChecking &&((docType != null &&
oldChild.getNodeType() != Node.DOCUMENT_TYPE_NODE &&
newChild.getNodeType() == Node.DOCUMENT_TYPE_NODE)
|| (docElement != null &&
oldChild.getNodeType() != Node.ELEMENT_NODE &&
newChild.getNodeType() == Node.ELEMENT_NODE))) {
throw new DOMException(
DOMException.HIERARCHY_REQUEST_ERR,
DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "HIERARCHY_REQUEST_ERR", null));
}
super.replaceChild(newChild, oldChild);
int type = oldChild.getNodeType();
if(type == Node.ELEMENT_NODE) {
docElement = (ElementImpl)newChild;
}
else if (type == Node.DOCUMENT_TYPE_NODE) {
docType = (DocumentTypeImpl)newChild;
}
return oldChild;
} // replaceChild(Node,Node):Node
/*
* Get Node text content
* @since DOM Level 3
*/
public String getTextContent() throws DOMException {
return null;
}
/*
* Set Node text content
* @since DOM Level 3
*/
public void setTextContent(String textContent)
throws DOMException {
// no-op
}
/**
* @since DOM Level 3
*/
public Object getFeature(String feature, String version) {
boolean anyVersion = version == null || version.length() == 0;
// if a plus sign "+" is prepended to any feature name, implementations
// are considered in which the specified feature may not be directly
// castable DOMImplementation.getFeature(feature, version). Without a
// plus, only features whose interfaces are directly castable are
// considered.
if ((feature.equalsIgnoreCase("+XPath"))
&& (anyVersion || version.equals("3.0"))) {
// If an XPathEvaluator was created previously
// return it otherwise create a new one.
if (fXPathEvaluator != null) {
return fXPathEvaluator;
}
try {
Class xpathClass = ObjectFactory.findProviderClass(
"org.apache.xpath.domapi.XPathEvaluatorImpl",
ObjectFactory.findClassLoader(), true);
Constructor xpathClassConstr =
xpathClass.getConstructor(new Class[] { Document.class });
// Check if the DOM XPath implementation implements
// the interface org.w3c.dom.XPathEvaluator
Class interfaces[] = xpathClass.getInterfaces();
for (int i = 0; i < interfaces.length; i++) {
if (interfaces[i].getName().equals(
"org.w3c.dom.xpath.XPathEvaluator")) {
fXPathEvaluator = xpathClassConstr.newInstance(new Object[] { this });
return fXPathEvaluator;
}
}
return null;
} catch (Exception e) {
return null;
}
}
return super.getFeature(feature, version);
}
//
// Document methods
//
// factory methods
/**
* Factory method; creates an Attribute having this Document as its
* OwnerDoc.
*
* @param name The name of the attribute. Note that the attribute's value is
* _not_ established at the factory; remember to set it!
*
* @throws DOMException(INVALID_NAME_ERR)
* if the attribute name is not acceptable.
*/
public Attr createAttribute(String name)
throws DOMException {
if (errorChecking && !isXMLName(name,xml11Version)) {
String msg =
DOMMessageFormatter.formatMessage(
DOMMessageFormatter.DOM_DOMAIN,
"INVALID_CHARACTER_ERR",
null);
throw new DOMException(DOMException.INVALID_CHARACTER_ERR, msg);
}
return new AttrImpl(this, name);
} // createAttribute(String):Attr
/**
* Factory method; creates a CDATASection having this Document as
* its OwnerDoc.
*
* @param data The initial contents of the CDATA
*
* @throws DOMException(NOT_SUPPORTED_ERR) for HTML documents. (HTML
* not yet implemented.)
*/
public CDATASection createCDATASection(String data)
throws DOMException {
return new CDATASectionImpl(this, data);
}
/**
* Factory method; creates a Comment having this Document as its
* OwnerDoc.
*
* @param data The initial contents of the Comment. */
public Comment createComment(String data) {
return new CommentImpl(this, data);
}
/**
* Factory method; creates a DocumentFragment having this Document
* as its OwnerDoc.
*/
public DocumentFragment createDocumentFragment() {
return new DocumentFragmentImpl(this);
}
/**
* Factory method; creates an Element having this Document
* as its OwnerDoc.
*
* @param tagName The name of the element type to instantiate. For
* XML, this is case-sensitive. For HTML, the tagName parameter may
* be provided in any case, but it must be mapped to the canonical
* uppercase form by the DOM implementation.
*
* @throws DOMException(INVALID_NAME_ERR) if the tag name is not
* acceptable.
*/
public Element createElement(String tagName)
throws DOMException {
if (errorChecking && !isXMLName(tagName,xml11Version)) {
String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "INVALID_CHARACTER_ERR", null);
throw new DOMException(DOMException.INVALID_CHARACTER_ERR, msg);
}
return new ElementImpl(this, tagName);
} // createElement(String):Element
/**
* Factory method; creates an EntityReference having this Document
* as its OwnerDoc.
*
* @param name The name of the Entity we wish to refer to
*
* @throws DOMException(NOT_SUPPORTED_ERR) for HTML documents, where
* nonstandard entities are not permitted. (HTML not yet
* implemented.)
*/
public EntityReference createEntityReference(String name)
throws DOMException {
if (errorChecking && !isXMLName(name,xml11Version)) {
String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "INVALID_CHARACTER_ERR", null);
throw new DOMException(DOMException.INVALID_CHARACTER_ERR, msg);
}
return new EntityReferenceImpl(this, name);
} // createEntityReference(String):EntityReference
/**
* Factory method; creates a ProcessingInstruction having this Document
* as its OwnerDoc.
*
* @param target The target "processor channel"
* @param data Parameter string to be passed to the target.
*
* @throws DOMException(INVALID_NAME_ERR) if the target name is not
* acceptable.
*
* @throws DOMException(NOT_SUPPORTED_ERR) for HTML documents. (HTML
* not yet implemented.)
*/
public ProcessingInstruction createProcessingInstruction(String target,
String data)
throws DOMException {
if (errorChecking && !isXMLName(target,xml11Version)) {
String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "INVALID_CHARACTER_ERR", null);
throw new DOMException(DOMException.INVALID_CHARACTER_ERR, msg);
}
return new ProcessingInstructionImpl(this, target, data);
} // createProcessingInstruction(String,String):ProcessingInstruction
/**
* Factory method; creates a Text node having this Document as its
* OwnerDoc.
*
* @param data The initial contents of the Text.
*/
public Text createTextNode(String data) {
return new TextImpl(this, data);
}
// other document methods
/**
* For XML, this provides access to the Document Type Definition.
* For HTML documents, and XML documents which don't specify a DTD,
* it will be null.
*/
public DocumentType getDoctype() {
if (needsSyncChildren()) {
synchronizeChildren();
}
return docType;
}
/**
* Convenience method, allowing direct access to the child node
* which is considered the root of the actual document content. For
* HTML, where it is legal to have more than one Element at the top
* level of the document, we pick the one with the tagName
* "HTML". For XML there should be only one top-level
*
* (HTML not yet supported.)
*/
public Element getDocumentElement() {
if (needsSyncChildren()) {
synchronizeChildren();
}
return docElement;
}
/**
* Return a live collection of all descendent Elements (not just
* immediate children) having the specified tag name.
*
* @param tagname The type of Element we want to gather. "*" will be
* taken as a wildcard, meaning "all elements in the document."
*
* @see DeepNodeListImpl
*/
public NodeList getElementsByTagName(String tagname) {
return new DeepNodeListImpl(this,tagname);
}
/**
* Retrieve information describing the abilities of this particular
* DOM implementation. Intended to support applications that may be
* using DOMs retrieved from several different sources, potentially
* with different underlying representations.
*/
public DOMImplementation getImplementation() {
// Currently implemented as a singleton, since it's hardcoded
// information anyway.
return CoreDOMImplementationImpl.getDOMImplementation();
}
//
// Public methods
//
// properties
/**
* Sets whether the DOM implementation performs error checking
* upon operations. Turning off error checking only affects
* the following DOM checks:
*
* - Checking strings to make sure that all characters are
* legal XML characters
*
- Hierarchy checking such as allowed children, checks for
* cycles, etc.
*
*
* Turning off error checking does not turn off the
* following checks:
*
* - Read only checks
*
- Checks related to DOM events
*
*/
public void setErrorChecking(boolean check) {
errorChecking = check;
}
/*
* DOM Level 3 WD - Experimental.
*/
public void setStrictErrorChecking(boolean check) {
errorChecking = check;
}
/**
* Returns true if the DOM implementation performs error checking.
*/
public boolean getErrorChecking() {
return errorChecking;
}
/*
* DOM Level 3 WD - Experimental.
*/
public boolean getStrictErrorChecking() {
return errorChecking;
}
/**
* DOM Level 3 CR - Experimental. (Was getActualEncoding)
*
* An attribute specifying the encoding used for this document
* at the time of the parsing. This is null when
* it is not known, such as when the Document was
* created in memory.
* @since DOM Level 3
*/
public String getInputEncoding() {
return actualEncoding;
}
/**
* DOM Internal
* (Was a DOM L3 Core WD public interface method setActualEncoding )
*
* An attribute specifying the actual encoding of this document. This is
* null otherwise.
*
This attribute represents the property [character encoding scheme]
* defined in .
*/
public void setInputEncoding(String value) {
actualEncoding = value;
}
/**
* DOM Internal
* (Was a DOM L3 Core WD public interface method setXMLEncoding )
*
* An attribute specifying, as part of the XML declaration,
* the encoding of this document. This is null when unspecified.
*/
public void setXmlEncoding(String value) {
encoding = value;
}
/**
* @deprecated This method is internal and only exists for
* compatibility with older applications. New applications
* should never call this method.
*/
public void setEncoding(String value) {
setXmlEncoding(value);
}
/**
* DOM Level 3 WD - Experimental.
* The encoding of this document (part of XML Declaration)
*/
public String getXmlEncoding() {
return encoding;
}
/**
* @deprecated This method is internal and only exists for
* compatibility with older applications. New applications
* should never call this method.
*/
public String getEncoding() {
return getXmlEncoding();
}
/**
* DOM Level 3 CR - Experimental.
* version - An attribute specifying, as part of the XML declaration,
* the version number of this document.
*/
public void setXmlVersion(String value) {
if(value.equals("1.0") || value.equals("1.1")){
//we need to change the flag value only --
// when the version set is different than already set.
if(!getXmlVersion().equals(value)){
xmlVersionChanged = true ;
//change the normalization value back to false
isNormalized(false);
version = value;
}
}
else{
//NOT_SUPPORTED_ERR: Raised if the vesion is set to a value that is not supported by
//this document
//we dont support any other XML version
String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NOT_SUPPORTED_ERR", null);
throw new DOMException(DOMException.NOT_SUPPORTED_ERR, msg);
}
if((getXmlVersion()).equals("1.1")){
xml11Version = true;
}
else{
xml11Version = false;
}
}
/**
* @deprecated This method is internal and only exists for
* compatibility with older applications. New applications
* should never call this method.
*/
public void setVersion(String value) {
setXmlVersion(value);
}
/**
* DOM Level 3 WD - Experimental.
* The version of this document (part of XML Declaration)
*/
public String getXmlVersion() {
return (version == null)?"1.0":version;
}
/**
* @deprecated This method is internal and only exists for
* compatibility with older applications. New applications
* should never call this method.
*/
public String getVersion() {
return getXmlVersion();
}
/**
* DOM Level 3 CR - Experimental.
*
* Xmlstandalone - An attribute specifying, as part of the XML declaration,
* whether this document is standalone
* @exception DOMException
* NOT_SUPPORTED_ERR: Raised if this document does not support the
* "XML" feature.
* @since DOM Level 3
*/
public void setXmlStandalone(boolean value)
throws DOMException {
standalone = value;
}
/**
* @deprecated This method is internal and only exists for
* compatibility with older applications. New applications
* should never call this method.
*/
public void setStandalone(boolean value) {
setXmlStandalone(value);
}
/**
* DOM Level 3 WD - Experimental.
* standalone that specifies whether this document is standalone
* (part of XML Declaration)
*/
public boolean getXmlStandalone() {
return standalone;
}
/**
* @deprecated This method is internal and only exists for
* compatibility with older applications. New applications
* should never call this method.
*/
public boolean getStandalone() {
return getXmlStandalone();
}
/**
* DOM Level 3 WD - Experimental.
* The location of the document or null if undefined.
*
Beware that when the Document supports the feature
* "HTML" , the href attribute of the HTML BASE element takes precedence
* over this attribute.
* @since DOM Level 3
*/
public String getDocumentURI(){
return fDocumentURI;
}
/* NON-DOM
* Used by DOM Level 3 WD remameNode.
*
* Some DOM implementations do not allow nodes to be renamed and require
* creating new elements.
* In this case this method should be overwritten.
*
* @return true if the given element can be renamed, false, if it must be replaced.
*/
protected boolean canRenameElements(String newNamespaceURI, String newNodeName, ElementImpl el) {
return true;
}
/**
* DOM Level 3 WD - Experimental.
* Renaming node
*/
public Node renameNode(Node n,String namespaceURI,String name)
throws DOMException{
if (errorChecking && n.getOwnerDocument() != this && n != this) {
String msg = DOMMessageFormatter.formatMessage(
DOMMessageFormatter.DOM_DOMAIN, "WRONG_DOCUMENT_ERR", null);
throw new DOMException(DOMException.WRONG_DOCUMENT_ERR, msg);
}
switch (n.getNodeType()) {
case ELEMENT_NODE: {
ElementImpl el = (ElementImpl) n;
if (el instanceof ElementNSImpl) {
if (canRenameElements(namespaceURI, name, el)) {
((ElementNSImpl) el).rename(namespaceURI, name);
// fire user data NODE_RENAMED event
callUserDataHandlers(el, null, UserDataHandler.NODE_RENAMED);
}
else {
el = replaceRenameElement(el, namespaceURI, name);
}
}
else {
if (namespaceURI == null && canRenameElements(null, name, el)) {
el.rename(name);
// fire user data NODE_RENAMED event
callUserDataHandlers(el, null, UserDataHandler.NODE_RENAMED);
}
else {
el = replaceRenameElement(el, namespaceURI, name);
}
}
// fire ElementNameChanged event
renamedElement((Element) n, el);
return el;
}
case ATTRIBUTE_NODE: {
AttrImpl at = (AttrImpl) n;
// detach attr from element
Element el = at.getOwnerElement();
if (el != null) {
el.removeAttributeNode(at);
}
if (n instanceof AttrNSImpl) {
((AttrNSImpl) at).rename(namespaceURI, name);
// reattach attr to element
if (el != null) {
el.setAttributeNodeNS(at);
}
// fire user data NODE_RENAMED event
callUserDataHandlers(at, null, UserDataHandler.NODE_RENAMED);
}
else {
if (namespaceURI == null) {
at.rename(name);
// reattach attr to element
if (el != null) {
el.setAttributeNode(at);
}
// fire user data NODE_RENAMED event
callUserDataHandlers(at, null, UserDataHandler.NODE_RENAMED);
}
else {
// we need to create a new object
AttrNSImpl nat = (AttrNSImpl) createAttributeNS(namespaceURI, name);
// register event listeners on new node
copyEventListeners(at, nat);
// remove user data from old node
Hashtable data = removeUserDataTable(at);
// move children to new node
Node child = at.getFirstChild();
while (child != null) {
at.removeChild(child);
nat.appendChild(child);
child = at.getFirstChild();
}
// attach user data to new node
setUserDataTable(nat, data);
// and fire user data NODE_RENAMED event
callUserDataHandlers(at, nat, UserDataHandler.NODE_RENAMED);
// reattach attr to element
if (el != null) {
el.setAttributeNode(nat);
}
at = nat;
}
}
// fire AttributeNameChanged event
renamedAttrNode((Attr) n, at);
return at;
}
default: {
String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NOT_SUPPORTED_ERR", null);
throw new DOMException(DOMException.NOT_SUPPORTED_ERR, msg);
}
}
}
private ElementImpl replaceRenameElement(ElementImpl el, String namespaceURI, String name) {
// we need to create a new object
ElementNSImpl nel = (ElementNSImpl)createElementNS(namespaceURI, name);
// register event listeners on new node
copyEventListeners(el, nel);
// remove user data from old node
Hashtable data = removeUserDataTable(el);
// remove old node from parent if any
Node parent = el.getParentNode();
Node nextSib = el.getNextSibling();
if (parent != null) {
parent.removeChild(el);
}
// move children to new node
Node child = el.getFirstChild();
while (child != null) {
el.removeChild(child);
nel.appendChild(child);
child = el.getFirstChild();
}
// move specified attributes to new node
nel.moveSpecifiedAttributes(el);
// attach user data to new node
setUserDataTable(nel, data);
// and fire user data NODE_RENAMED event
callUserDataHandlers(el, nel,
UserDataHandler.NODE_RENAMED);
// insert new node where old one was
if (parent != null) {
parent.insertBefore(nel, nextSib);
}
return nel;
}
/**
* DOM Level 3 WD - Experimental
* Normalize document.
*/
public void normalizeDocument(){
// No need to normalize if already normalized.
if (isNormalized() && !isNormalizeDocRequired()) {
return;
}
if (needsSyncChildren()) {
synchronizeChildren();
}
if (domNormalizer == null) {
domNormalizer = new DOMNormalizer();
}
if (fConfiguration == null) {
fConfiguration = new DOMConfigurationImpl();
}
else {
fConfiguration.reset();
}
domNormalizer.normalizeDocument(this, fConfiguration);
isNormalized(true);
//set the XMLversion changed value to false -- once we have finished
//doing normalization
xmlVersionChanged = false ;
}
/**
* DOM Level 3 CR - Experimental
*
* The configuration used when Document.normalizeDocument is
* invoked.
* @since DOM Level 3
*/
public DOMConfiguration getDomConfig(){
if (fConfiguration == null) {
fConfiguration = new DOMConfigurationImpl();
}
return fConfiguration;
}
/**
* Returns the absolute base URI of this node or null if the implementation
* wasn't able to obtain an absolute URI. Note: If the URI is malformed, a
* null is returned.
*
* @return The absolute base URI of this node or null.
* @since DOM Level 3
*/
public String getBaseURI() {
if (fDocumentURI != null && fDocumentURI.length() != 0 ) {// attribute value is always empty string
try {
return new URI(fDocumentURI).toString();
}
catch (org.apache.xerces.util.URI.MalformedURIException e){
// REVISIT: what should happen in this case?
return null;
}
}
return fDocumentURI;
}
/**
* DOM Level 3 WD - Experimental.
*/
public void setDocumentURI(String documentURI){
fDocumentURI = documentURI;
}
//
// DOM L3 LS
//
/**
* DOM Level 3 WD - Experimental.
* Indicates whether the method load should be synchronous or
* asynchronous. When the async attribute is set to true
* the load method returns control to the caller before the document has
* completed loading. The default value of this property is
* false.
*
Setting the value of this attribute might throw NOT_SUPPORTED_ERR
* if the implementation doesn't support the mode the attribute is being
* set to. Should the DOM spec define the default value of this
* property? What if implementing both async and sync IO is impractical
* in some systems? 2001-09-14. default is false but we
* need to check with Mozilla and IE.
*/
public boolean getAsync() {
return false;
}
/**
* DOM Level 3 WD - Experimental.
* Indicates whether the method load should be synchronous or
* asynchronous. When the async attribute is set to true
* the load method returns control to the caller before the document has
* completed loading. The default value of this property is
* false.
*
Setting the value of this attribute might throw NOT_SUPPORTED_ERR
* if the implementation doesn't support the mode the attribute is being
* set to. Should the DOM spec define the default value of this
* property? What if implementing both async and sync IO is impractical
* in some systems? 2001-09-14. default is false but we
* need to check with Mozilla and IE.
*/
public void setAsync(boolean async) {
if (async) {
String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NOT_SUPPORTED_ERR", null);
throw new DOMException(DOMException.NOT_SUPPORTED_ERR, msg);
}
}
/**
* DOM Level 3 WD - Experimental.
* If the document is currently being loaded as a result of the method
* load being invoked the loading and parsing is
* immediately aborted. The possibly partial result of parsing the
* document is discarded and the document is cleared.
*/
public void abort() {
}
/**
* DOM Level 3 WD - Experimental.
*
* Replaces the content of the document with the result of parsing the
* given URI. Invoking this method will either block the caller or
* return to the caller immediately depending on the value of the async
* attribute. Once the document is fully loaded a "load" event (as
* defined in [DOM Level 3 Events]
* , except that the Event.targetNode will be the document,
* not an element) will be dispatched on the document. If an error
* occurs, an implementation dependent "error" event will be dispatched
* on the document. If this method is called on a document that is
* currently loading, the current load is interrupted and the new URI
* load is initiated.
*
When invoking this method the parameters used in the
* DOMParser interface are assumed to have their default
* values with the exception that the parameters "entities"
* , "normalize-characters",
* "check-character-normalization" are set to
* "false".
*
The result of a call to this method is the same the result of a
* call to DOMParser.parseWithContext with an input stream
* referencing the URI that was passed to this call, the document as the
* context node, and the action ACTION_REPLACE_CHILDREN.
* @param uri The URI reference for the XML file to be loaded. If this is
* a relative URI, the base URI used by the implementation is
* implementation dependent.
* @return If async is set to true load returns
* true if the document load was successfully initiated.
* If an error occurred when initiating the document load,
* load returns false.If async is set to
* false load returns true if
* the document was successfully loaded and parsed. If an error
* occurred when either loading or parsing the URI, load
* returns false.
*/
public boolean load(String uri) {
return false;
}
/**
* DOM Level 3 WD - Experimental.
* Replace the content of the document with the result of parsing the
* input string, this method is always synchronous.
* @param source A string containing an XML document.
* @return true if parsing the input string succeeded
* without errors, otherwise false.
*/
public boolean loadXML(String source) {
return false;
}
/**
* DOM Level 3 WD - Experimental.
* Save the document or the given node and all its descendants to a string
* (i.e. serialize the document or node).
*
The parameters used in the LSSerializer interface are
* assumed to have their default values when invoking this method.
*
The result of a call to this method is the same the result of a
* call to LSSerializer.writeToString with the document as
* the node to write.
* @param node Specifies what to serialize, if this parameter is
* null the whole document is serialized, if it's
* non-null the given node is serialized.
* @return The serialized document or null in case an error
* occurred.
* @exception DOMException
* WRONG_DOCUMENT_ERR: Raised if the node passed in as the node
* parameter is from an other document.
*/
public String saveXML(Node node)
throws DOMException {
if ( errorChecking && node != null &&
this != node.getOwnerDocument() ) {
String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "WRONG_DOCUMENT_ERR", null);
throw new DOMException(DOMException.WRONG_DOCUMENT_ERR, msg);
}
DOMImplementationLS domImplLS = (DOMImplementationLS)DOMImplementationImpl.getDOMImplementation();
LSSerializer xmlWriter = domImplLS.createLSSerializer();
if (node == null) {
node = this;
}
return xmlWriter.writeToString(node);
}
/**
* Sets whether the DOM implementation generates mutation events
* upon operations.
*/
void setMutationEvents(boolean set) {
// does nothing by default - overidden in subclass
}
/**
* Returns true if the DOM implementation generates mutation events.
*/
boolean getMutationEvents() {
// does nothing by default - overriden in subclass
return false;
}
// non-DOM factory methods
/**
* NON-DOM
* Factory method; creates a DocumentType having this Document
* as its OwnerDoc. (REC-DOM-Level-1-19981001 left the process of building
* DTD information unspecified.)
*
* @param qualifiedName
* @param publicID
* @param systemID
*
* @throws DOMException(NOT_SUPPORTED_ERR) for HTML documents, where
* DTDs are not permitted. (HTML not yet implemented.)
*/
public DocumentType createDocumentType(String qualifiedName,
String publicID,
String systemID)
throws DOMException {
return new DocumentTypeImpl(this, qualifiedName, publicID, systemID);
} // createDocumentType(String):DocumentType
/**
* NON-DOM
* Factory method; creates an Entity having this Document
* as its OwnerDoc. (REC-DOM-Level-1-19981001 left the process of building
* DTD information unspecified.)
*
* @param name The name of the Entity we wish to provide a value for.
*
* @throws DOMException(NOT_SUPPORTED_ERR) for HTML documents, where
* nonstandard entities are not permitted. (HTML not yet
* implemented.)
*/
public Entity createEntity(String name)
throws DOMException {
if (errorChecking && !isXMLName(name,xml11Version)) {
String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "INVALID_CHARACTER_ERR", null);
throw new DOMException(DOMException.INVALID_CHARACTER_ERR, msg);
}
return new EntityImpl(this, name);
} // createEntity(String):Entity
/**
* NON-DOM
* Factory method; creates a Notation having this Document
* as its OwnerDoc. (REC-DOM-Level-1-19981001 left the process of building
* DTD information unspecified.)
*
* @param name The name of the Notation we wish to describe
*
* @throws DOMException(NOT_SUPPORTED_ERR) for HTML documents, where
* notations are not permitted. (HTML not yet
* implemented.)
*/
public Notation createNotation(String name)
throws DOMException {
if (errorChecking && !isXMLName(name,xml11Version)) {
String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "INVALID_CHARACTER_ERR", null);
throw new DOMException(DOMException.INVALID_CHARACTER_ERR, msg);
}
return new NotationImpl(this, name);
} // createNotation(String):Notation
/**
* NON-DOM Factory method: creates an element definition. Element
* definitions hold default attribute values.
*/
public ElementDefinitionImpl createElementDefinition(String name)
throws DOMException {
if (errorChecking && !isXMLName(name,xml11Version)) {
String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "INVALID_CHARACTER_ERR", null);
throw new DOMException(DOMException.INVALID_CHARACTER_ERR, msg);
}
return new ElementDefinitionImpl(this, name);
} // createElementDefinition(String):ElementDefinitionImpl
// other non-DOM methods
/** NON-DOM: Get the number associated with this document. Used to
* order documents in the implementation.
*/
protected int getNodeNumber() {
if (documentNumber==0) {
CoreDOMImplementationImpl cd = (CoreDOMImplementationImpl)CoreDOMImplementationImpl.getDOMImplementation();
documentNumber = cd.assignDocumentNumber();
}
return documentNumber;
}
/** NON-DOM: Get a number associated with a node created with respect
* to this document. Needed for compareDocumentPosition when nodes
* are disconnected. This is only used on demand.
*/
protected int getNodeNumber(Node node) {
// Check if the node is already in the hash
// If so, retrieve the node number
// If not, assign a number to the node
// Node numbers are negative, from -1 to -n
int num;
if (nodeTable == null) {
nodeTable = new WeakHashMap();
num = --nodeCounter;
nodeTable.put(node, new Integer(num));
}
else {
Integer n = (Integer)nodeTable.get(node);
if (n== null) {
num = --nodeCounter;
nodeTable.put(node, new Integer(num));
}
else
num = n.intValue();
}
return num;
}
/**
* Copies a node from another document to this document. The new nodes are
* created using this document's factory methods and are populated with the
* data from the source's accessor methods defined by the DOM interfaces.
* Its behavior is otherwise similar to that of cloneNode.
*
* According to the DOM specifications, document nodes cannot be imported
* and a NOT_SUPPORTED_ERR exception is thrown if attempted.
*/
public Node importNode(Node source, boolean deep)
throws DOMException {
return importNode(source, deep, false, null);
} // importNode(Node,boolean):Node
/**
* Overloaded implementation of DOM's importNode method. This method
* provides the core functionality for the public importNode and cloneNode
* methods.
*
* The reversedIdentifiers parameter is provided for cloneNode to
* preserve the document's identifiers. The HashMap has Elements as the
* keys and their identifiers as the values. When an element is being
* imported, a check is done for an associated identifier. If one exists,
* the identifier is registered with the new, imported element. If
* reversedIdentifiers is null, the parameter is not applied.
*/
private Node importNode(Node source, boolean deep, boolean cloningDoc,
HashMap reversedIdentifiers)
throws DOMException {
Node newnode=null;
Hashtable userData = null;
// Sigh. This doesn't work; too many nodes have private data that
// would have to be manually tweaked. May be able to add local
// shortcuts to each nodetype. Consider ?????
// if(source instanceof NodeImpl &&
// !(source instanceof DocumentImpl))
// {
// // Can't clone DocumentImpl since it invokes us...
// newnode=(NodeImpl)source.cloneNode(false);
// newnode.ownerDocument=this;
// }
// else
if(source instanceof NodeImpl)
userData = ((NodeImpl)source).getUserDataRecord();
int type = source.getNodeType();
switch (type) {
case ELEMENT_NODE: {
Element newElement;
boolean domLevel20 = source.getOwnerDocument().getImplementation().hasFeature("XML", "2.0");
// Create element according to namespace support/qualification.
if(domLevel20 == false || source.getLocalName() == null)
newElement = createElement(source.getNodeName());
else
newElement = createElementNS(source.getNamespaceURI(),
source.getNodeName());
// Copy element's attributes, if any.
NamedNodeMap sourceAttrs = source.getAttributes();
if (sourceAttrs != null) {
int length = sourceAttrs.getLength();
for (int index = 0; index < length; index++) {
Attr attr = (Attr)sourceAttrs.item(index);
// NOTE: this methods is used for both importingNode
// and cloning the document node. In case of the
// clonning default attributes should be copied.
// But for importNode defaults should be ignored.
if (attr.getSpecified() || cloningDoc) {
Attr newAttr = (Attr)importNode(attr, true, cloningDoc,
reversedIdentifiers);
// Attach attribute according to namespace
// support/qualification.
if (domLevel20 == false ||
attr.getLocalName() == null)
newElement.setAttributeNode(newAttr);
else
newElement.setAttributeNodeNS(newAttr);
}
}
}
// Register element identifier.
if (reversedIdentifiers != null) {
// Does element have an associated identifier?
Object elementId = reversedIdentifiers.get(source);
if (elementId != null) {
if (identifiers == null)
identifiers = new Hashtable();
identifiers.put(elementId, newElement);
}
}
newnode = newElement;
break;
}
case ATTRIBUTE_NODE: {
if( source.getOwnerDocument().getImplementation().hasFeature("XML", "2.0") ){
if (source.getLocalName() == null) {
newnode = createAttribute(source.getNodeName());
} else {
newnode = createAttributeNS(source.getNamespaceURI(),
source.getNodeName());
}
}
else {
newnode = createAttribute(source.getNodeName());
}
// if source is an AttrImpl from this very same implementation
// avoid creating the child nodes if possible
if (source instanceof AttrImpl) {
AttrImpl attr = (AttrImpl) source;
if (attr.hasStringValue()) {
AttrImpl newattr = (AttrImpl) newnode;
newattr.setValue(attr.getValue());
deep = false;
}
else {
deep = true;
}
}
else {
// According to the DOM spec the kids carry the value.
// However, there are non compliant implementations out
// there that fail to do so. To avoid ending up with no
// value at all, in this case we simply copy the text value
// directly.
if (source.getFirstChild() == null) {
newnode.setNodeValue(source.getNodeValue());
deep = false;
} else {
deep = true;
}
}
break;
}
case TEXT_NODE: {
newnode = createTextNode(source.getNodeValue());
break;
}
case CDATA_SECTION_NODE: {
newnode = createCDATASection(source.getNodeValue());
break;
}
case ENTITY_REFERENCE_NODE: {
newnode = createEntityReference(source.getNodeName());
// the subtree is created according to this doc by the method
// above, so avoid carrying over original subtree
deep = false;
break;
}
case ENTITY_NODE: {
Entity srcentity = (Entity)source;
EntityImpl newentity =
(EntityImpl)createEntity(source.getNodeName());
newentity.setPublicId(srcentity.getPublicId());
newentity.setSystemId(srcentity.getSystemId());
newentity.setNotationName(srcentity.getNotationName());
// Kids carry additional value,
// allow deep import temporarily
newentity.isReadOnly(false);
newnode = newentity;
break;
}
case PROCESSING_INSTRUCTION_NODE: {
newnode = createProcessingInstruction(source.getNodeName(),
source.getNodeValue());
break;
}
case COMMENT_NODE: {
newnode = createComment(source.getNodeValue());
break;
}
case DOCUMENT_TYPE_NODE: {
// unless this is used as part of cloning a Document
// forbid it for the sake of being compliant to the DOM spec
if (!cloningDoc) {
String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NOT_SUPPORTED_ERR", null);
throw new DOMException(DOMException.NOT_SUPPORTED_ERR, msg);
}
DocumentType srcdoctype = (DocumentType)source;
DocumentTypeImpl newdoctype = (DocumentTypeImpl)
createDocumentType(srcdoctype.getNodeName(),
srcdoctype.getPublicId(),
srcdoctype.getSystemId());
newdoctype.setInternalSubset(srcdoctype.getInternalSubset());
// Values are on NamedNodeMaps
NamedNodeMap smap = srcdoctype.getEntities();
NamedNodeMap tmap = newdoctype.getEntities();
if(smap != null) {
for(int i = 0; i < smap.getLength(); i++) {
tmap.setNamedItem(importNode(smap.item(i), true, true,
reversedIdentifiers));
}
}
smap = srcdoctype.getNotations();
tmap = newdoctype.getNotations();
if (smap != null) {
for(int i = 0; i < smap.getLength(); i++) {
tmap.setNamedItem(importNode(smap.item(i), true, true,
reversedIdentifiers));
}
}
// NOTE: At this time, the DOM definition of DocumentType
// doesn't cover Elements and their Attributes. domimpl's
// extentions in that area will not be preserved, even if
// copying from domimpl to domimpl. We could special-case
// that here. Arguably we should. Consider. ?????
newnode = newdoctype;
break;
}
case DOCUMENT_FRAGMENT_NODE: {
newnode = createDocumentFragment();
// No name, kids carry value
break;
}
case NOTATION_NODE: {
Notation srcnotation = (Notation)source;
NotationImpl newnotation =
(NotationImpl)createNotation(source.getNodeName());
newnotation.setPublicId(srcnotation.getPublicId());
newnotation.setSystemId(srcnotation.getSystemId());
// Kids carry additional value
newnode = newnotation;
// No name, no value
break;
}
case DOCUMENT_NODE : // Can't import document nodes
default: { // Unknown node type
String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NOT_SUPPORTED_ERR", null);
throw new DOMException(DOMException.NOT_SUPPORTED_ERR, msg);
}
}
if(userData != null)
callUserDataHandlers(source, newnode, UserDataHandler.NODE_IMPORTED,userData);
// If deep, replicate and attach the kids.
if (deep) {
for (Node srckid = source.getFirstChild();
srckid != null;
srckid = srckid.getNextSibling()) {
newnode.appendChild(importNode(srckid, true, cloningDoc,
reversedIdentifiers));
}
}
if (newnode.getNodeType() == Node.ENTITY_NODE) {
((NodeImpl)newnode).setReadOnly(true, true);
}
return newnode;
} // importNode(Node,boolean,boolean,Hashtable):Node
/**
* DOM Level 3 WD - Experimental
* Change the node's ownerDocument, and its subtree, to this Document
*
* @param source The node to adopt.
* @see #importNode
**/
public Node adoptNode(Node source) {
NodeImpl node;
Hashtable userData = null;
try {
node = (NodeImpl) source;
} catch (ClassCastException e) {
// source node comes from a different DOMImplementation
return null;
}
// Return null if the source is null
if (source == null) {
return null;
}
else if (source != null && source.getOwnerDocument() != null) {
DOMImplementation thisImpl = this.getImplementation();
DOMImplementation otherImpl = source.getOwnerDocument().getImplementation();
// when the source node comes from a different implementation.
if (thisImpl != otherImpl) {
// Adopting from a deferred DOM to a non-deferred DOM
if (thisImpl instanceof org.apache.xerces.dom.DOMImplementationImpl &&
otherImpl instanceof org.apache.xerces.dom.DeferredDOMImplementationImpl) {
// traverse the DOM and expand deferred nodes and then allow adoption
undeferChildren (node);
}
else if ( thisImpl instanceof org.apache.xerces.dom.DeferredDOMImplementationImpl
&& otherImpl instanceof org.apache.xerces.dom.DOMImplementationImpl) {
// Adopting from a non-deferred DOM into a deferred DOM, this should be okay
}
else {
// Adopting between two dissimilar DOMs is not allowed
return null;
}
}
// Adopting from a deferred DOM into another deferred DOM
else if (otherImpl instanceof org.apache.xerces.dom.DeferredDOMImplementationImpl) {
// traverse the DOM and expand deferred nodes and then allow adoption
undeferChildren (node);
}
}
switch (node.getNodeType()) {
case ATTRIBUTE_NODE: {
AttrImpl attr = (AttrImpl) node;
// remove node from wherever it is
if( attr.getOwnerElement() != null){
//1. owner element attribute is set to null
attr.getOwnerElement().removeAttributeNode(attr);
}
//2. specified flag is set to true
attr.isSpecified(true);
userData = node.getUserDataRecord();
//3. change ownership
attr.setOwnerDocument(this);
if(userData != null )
setUserDataTable(node,userData);
break;
}
//entity, notation nodes are read only nodes.. so they can't be adopted.
//runtime will fall through to NOTATION_NODE
case ENTITY_NODE:
case NOTATION_NODE:{
String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NO_MODIFICATION_ALLOWED_ERR", null);
throw new DOMException(DOMException.NO_MODIFICATION_ALLOWED_ERR, msg);
}
//document, documentype nodes can't be adopted.
//runtime will fall through to DocumentTypeNode
case DOCUMENT_NODE:
case DOCUMENT_TYPE_NODE: {
String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NOT_SUPPORTED_ERR", null);
throw new DOMException(DOMException.NOT_SUPPORTED_ERR, msg);
}
case ENTITY_REFERENCE_NODE: {
userData = node.getUserDataRecord();
// remove node from wherever it is
Node parent = node.getParentNode();
if (parent != null) {
parent.removeChild(source);
}
// discard its replacement value
Node child;
while ((child = node.getFirstChild()) != null) {
node.removeChild(child);
}
// change ownership
node.setOwnerDocument(this);
if(userData != null)
setUserDataTable(node,userData);
// set its new replacement value if any
if (docType == null) {
break;
}
NamedNodeMap entities = docType.getEntities();
Node entityNode = entities.getNamedItem(node.getNodeName());
if (entityNode == null) {
break;
}
for (child = entityNode.getFirstChild();
child != null; child = child.getNextSibling()) {
Node childClone = child.cloneNode(true);
node.appendChild(childClone);
}
break;
}
case ELEMENT_NODE: {
userData = node.getUserDataRecord();
// remove node from wherever it is
Node parent = node.getParentNode();
if (parent != null) {
parent.removeChild(source);
}
// change ownership
node.setOwnerDocument(this);
if(userData != null)
setUserDataTable(node,userData);
// reconcile default attributes
((ElementImpl)node).reconcileDefaultAttributes();
break;
}
default: {
userData = node.getUserDataRecord();
// remove node from wherever it is
Node parent = node.getParentNode();
if (parent != null) {
parent.removeChild(source);
}
// change ownership
node.setOwnerDocument(this);
if(userData != null)
setUserDataTable(node,userData);
}
}
//DOM L3 Core CR
//http://www.w3.org/TR/2003/CR-DOM-Level-3-Core-20031107/core.html#UserDataHandler-ADOPTED
if(userData != null)
callUserDataHandlers(source, null, UserDataHandler.NODE_ADOPTED,userData);
return node;
}
/**
* Traverses the DOM Tree and expands deferred nodes and their
* children.
*
*/
protected void undeferChildren(Node node) {
Node top = node;
while (null != node) {
if (((NodeImpl)node).needsSyncData()) {
((NodeImpl)node).synchronizeData();
}
NamedNodeMap attributes = node.getAttributes();
if (attributes != null) {
int length = attributes.getLength();
for (int i = 0; i < length; ++i) {
undeferChildren(attributes.item(i));
}
}
Node nextNode = null;
nextNode = node.getFirstChild();
while (null == nextNode) {
if (top.equals(node))
break;
nextNode = node.getNextSibling();
if (null == nextNode) {
node = node.getParentNode();
if ((null == node) || (top.equals(node))) {
nextNode = null;
break;
}
}
}
node = nextNode;
}
}
// identifier maintenence
/**
* Introduced in DOM Level 2
* Returns the Element whose ID is given by elementId. If no such element
* exists, returns null. Behavior is not defined if more than one element
* has this ID.
*
* Note: The DOM implementation must have information that says which
* attributes are of type ID. Attributes with the name "ID" are not of type
* ID unless so defined. Implementations that do not know whether
* attributes are of type ID or not are expected to return null.
* @see #getIdentifier
*/
public Element getElementById(String elementId) {
return getIdentifier(elementId);
}
/**
* Remove all identifiers from the ID table
*/
protected final void clearIdentifiers(){
if (identifiers != null){
identifiers.clear();
}
}
/**
* Registers an identifier name with a specified element node.
* If the identifier is already registered, the new element
* node replaces the previous node. If the specified element
* node is null, removeIdentifier() is called.
*
* @see #getIdentifier
* @see #removeIdentifier
*/
public void putIdentifier(String idName, Element element) {
if (element == null) {
removeIdentifier(idName);
return;
}
if (needsSyncData()) {
synchronizeData();
}
if (identifiers == null) {
identifiers = new Hashtable();
}
identifiers.put(idName, element);
} // putIdentifier(String,Element)
/**
* Returns a previously registered element with the specified
* identifier name, or null if no element is registered.
*
* @see #putIdentifier
* @see #removeIdentifier
*/
public Element getIdentifier(String idName) {
if (needsSyncData()) {
synchronizeData();
}
if (identifiers == null) {
return null;
}
Element elem = (Element) identifiers.get(idName);
if (elem != null) {
// check that the element is in the tree
Node parent = elem.getParentNode();
while (parent != null) {
if (parent == this) {
return elem;
}
parent = parent.getParentNode();
}
}
return null;
} // getIdentifier(String):Element
/**
* Removes a previously registered element with the specified
* identifier name.
*
* @see #putIdentifier
* @see #getIdentifier
*/
public void removeIdentifier(String idName) {
if (needsSyncData()) {
synchronizeData();
}
if (identifiers == null) {
return;
}
identifiers.remove(idName);
} // removeIdentifier(String)
/** Returns an enumeration registered of identifier names. */
public Enumeration getIdentifiers() {
if (needsSyncData()) {
synchronizeData();
}
if (identifiers == null) {
identifiers = new Hashtable();
}
return identifiers.keys();
} // getIdentifiers():Enumeration
//
// DOM2: Namespace methods
//
/**
* Introduced in DOM Level 2.
* Creates an element of the given qualified name and namespace URI.
* If the given namespaceURI is null or an empty string and the
* qualifiedName has a prefix that is "xml", the created element
* is bound to the predefined namespace
* "http://www.w3.org/XML/1998/namespace" [Namespaces].
* @param namespaceURI The namespace URI of the element to
* create.
* @param qualifiedName The qualified name of the element type to
* instantiate.
* @return Element A new Element object with the following attributes:
* @throws DOMException INVALID_CHARACTER_ERR: Raised if the specified
* name contains an invalid character.
* @throws DOMException NAMESPACE_ERR: Raised if the qualifiedName has a
* prefix that is "xml" and the namespaceURI is
* neither null nor an empty string nor
* "http://www.w3.org/XML/1998/namespace", or
* if the qualifiedName has a prefix different
* from "xml" and the namespaceURI is null or an
* empty string.
* @since WD-DOM-Level-2-19990923
*/
public Element createElementNS(String namespaceURI, String qualifiedName)
throws DOMException {
return new ElementNSImpl(this, namespaceURI, qualifiedName);
}
/**
* NON-DOM: a factory method used by the Xerces DOM parser
* to create an element.
*
* @param namespaceURI The namespace URI of the element to
* create.
* @param qualifiedName The qualified name of the element type to
* instantiate.
* @param localpart The local name of the attribute to instantiate.
*
* @return Element A new Element object with the following attributes:
* @exception DOMException INVALID_CHARACTER_ERR: Raised if the specified
* name contains an invalid character.
*/
public Element createElementNS(String namespaceURI, String qualifiedName,
String localpart)
throws DOMException {
return new ElementNSImpl(this, namespaceURI, qualifiedName, localpart);
}
/**
* Introduced in DOM Level 2.
* Creates an attribute of the given qualified name and namespace URI.
* If the given namespaceURI is null or an empty string and the
* qualifiedName has a prefix that is "xml", the created element
* is bound to the predefined namespace
* "http://www.w3.org/XML/1998/namespace" [Namespaces].
*
* @param namespaceURI The namespace URI of the attribute to
* create. When it is null or an empty string,
* this method behaves like createAttribute.
* @param qualifiedName The qualified name of the attribute to
* instantiate.
* @return Attr A new Attr object.
* @throws DOMException INVALID_CHARACTER_ERR: Raised if the specified
* name contains an invalid character.
* @since WD-DOM-Level-2-19990923
*/
public Attr createAttributeNS(String namespaceURI, String qualifiedName)
throws DOMException {
return new AttrNSImpl(this, namespaceURI, qualifiedName);
}
/**
* NON-DOM: a factory method used by the Xerces DOM parser
* to create an element.
*
* @param namespaceURI The namespace URI of the attribute to
* create. When it is null or an empty string,
* this method behaves like createAttribute.
* @param qualifiedName The qualified name of the attribute to
* instantiate.
* @param localpart The local name of the attribute to instantiate.
*
* @return Attr A new Attr object.
* @throws DOMException INVALID_CHARACTER_ERR: Raised if the specified
* name contains an invalid character.
*/
public Attr createAttributeNS(String namespaceURI, String qualifiedName,
String localpart)
throws DOMException {
return new AttrNSImpl(this, namespaceURI, qualifiedName, localpart);
}
/**
* Introduced in DOM Level 2.
* Returns a NodeList of all the Elements with a given local name and
* namespace URI in the order in which they would be encountered in a
* preorder traversal of the Document tree.
* @param namespaceURI The namespace URI of the elements to match
* on. The special value "*" matches all
* namespaces. When it is null or an empty
* string, this method behaves like
* getElementsByTagName.
* @param localName The local name of the elements to match on.
* The special value "*" matches all local names.
* @return NodeList A new NodeList object containing all the matched
* Elements.
* @since WD-DOM-Level-2-19990923
*/
public NodeList getElementsByTagNameNS(String namespaceURI,
String localName) {
return new DeepNodeListImpl(this, namespaceURI, localName);
}
//
// Object methods
//
/** Clone. */
public Object clone() throws CloneNotSupportedException {
CoreDocumentImpl newdoc = (CoreDocumentImpl) super.clone();
newdoc.docType = null;
newdoc.docElement = null;
return newdoc;
}
//
// Public static methods
//
/**
* Check the string against XML's definition of acceptable names for
* elements and attributes and so on using the XMLCharacterProperties
* utility class
*/
public static final boolean isXMLName(String s, boolean xml11Version) {
if (s == null) {
return false;
}
if(!xml11Version)
return XMLChar.isValidName(s);
else
return XML11Char.isXML11ValidName(s);
} // isXMLName(String):boolean
/**
* Checks if the given qualified name is legal with respect
* to the version of XML to which this document must conform.
*
* @param prefix prefix of qualified name
* @param local local part of qualified name
*/
public static final boolean isValidQName(String prefix, String local, boolean xml11Version) {
// check that both prefix and local part match NCName
if (local == null) return false;
boolean validNCName = false;
if (!xml11Version) {
validNCName = (prefix == null || XMLChar.isValidNCName(prefix))
&& XMLChar.isValidNCName(local);
}
else {
validNCName = (prefix == null || XML11Char.isXML11ValidNCName(prefix))
&& XML11Char.isXML11ValidNCName(local);
}
return validNCName;
}
//
// Protected methods
//
/**
* Uses the kidOK lookup table to check whether the proposed
* tree structure is legal.
*/
protected boolean isKidOK(Node parent, Node child) {
if (allowGrammarAccess &&
parent.getNodeType() == Node.DOCUMENT_TYPE_NODE) {
return child.getNodeType() == Node.ELEMENT_NODE;
}
return 0 != (kidOK[parent.getNodeType()] & 1 << child.getNodeType());
}
/**
* Denotes that this node has changed.
*/
protected void changed() {
changes++;
}
/**
* Returns the number of changes to this node.
*/
protected int changes() {
return changes;
}
// NodeListCache pool
/**
* Returns a NodeListCache for the given node.
*/
NodeListCache getNodeListCache(ParentNode owner) {
if (fFreeNLCache == null) {
return new NodeListCache(owner);
}
NodeListCache c = fFreeNLCache;
fFreeNLCache = fFreeNLCache.next;
c.fChild = null;
c.fChildIndex = -1;
c.fLength = -1;
// revoke previous ownership
if (c.fOwner != null) {
c.fOwner.fNodeListCache = null;
}
c.fOwner = owner;
// c.next = null; not necessary, except for confused people...
return c;
}
/**
* Puts the given NodeListCache in the free list.
* Note: The owner node can keep using it until we reuse it
*/
void freeNodeListCache(NodeListCache c) {
c.next = fFreeNLCache;
fFreeNLCache = c;
}
/**
* Associate an object to a key on this node. The object can later be
* retrieved from this node by calling getUserData with the
* same key.
* @param n The node to associate the object to.
* @param key The key to associate the object to.
* @param data The object to associate to the given key, or
* null to remove any existing association to that key.
* @param handler The handler to associate to that key, or
* null.
* @return Returns the DOMObject previously associated to
* the given key on this node, or null if there was none.
* @since DOM Level 3
*
* REVISIT: we could use a free list of UserDataRecord here
*/
public Object setUserData(Node n, String key,
Object data, UserDataHandler handler) {
if (data == null) {
if (userData != null) {
Hashtable t = (Hashtable) userData.get(n);
if (t != null) {
Object o = t.remove(key);
if (o != null) {
UserDataRecord r = (UserDataRecord) o;
return r.fData;
}
}
}
return null;
}
else {
Hashtable t;
if (userData == null) {
userData = new WeakHashMap();
t = new Hashtable();
userData.put(n, t);
}
else {
t = (Hashtable) userData.get(n);
if (t == null) {
t = new Hashtable();
userData.put(n, t);
}
}
Object o = t.put(key, new UserDataRecord(data, handler));
if (o != null) {
UserDataRecord r = (UserDataRecord) o;
return r.fData;
}
return null;
}
}
/**
* Retrieves the object associated to a key on a this node. The object
* must first have been set to this node by calling
* setUserData with the same key.
* @param n The node the object is associated to.
* @param key The key the object is associated to.
* @return Returns the DOMObject associated to the given key
* on this node, or null if there was none.
* @since DOM Level 3
*/
public Object getUserData(Node n, String key) {
if (userData == null) {
return null;
}
Hashtable t = (Hashtable) userData.get(n);
if (t == null) {
return null;
}
Object o = t.get(key);
if (o != null) {
UserDataRecord r = (UserDataRecord) o;
return r.fData;
}
return null;
}
protected Hashtable getUserDataRecord(Node n){
if (userData == null) {
return null;
}
Hashtable t = (Hashtable) userData.get(n);
if (t == null) {
return null;
}
return t;
}
/**
* Remove user data table for the given node.
* @param n The node this operation applies to.
* @return The removed table.
*/
Hashtable removeUserDataTable(Node n) {
if (userData == null) {
return null;
}
return (Hashtable) userData.get(n);
}
/**
* Set user data table for the given node.
* @param n The node this operation applies to.
* @param data The user data table.
*/
void setUserDataTable(Node n, Hashtable data) {
if (userData == null) {
userData = new WeakHashMap();
}
if (data != null) {
userData.put(n, data);
}
}
/**
* Call user data handlers when a node is deleted (finalized)
* @param n The node this operation applies to.
* @param c The copy node or null.
* @param operation The operation - import, clone, or delete.
*/
protected void callUserDataHandlers(Node n, Node c, short operation) {
if (userData == null) {
return;
}
//Hashtable t = (Hashtable) userData.get(n);
if(n instanceof NodeImpl){
Hashtable t = ((NodeImpl)n).getUserDataRecord();
if (t == null || t.isEmpty()) {
return;
}
callUserDataHandlers(n, c, operation,t);
}
}
/**
* Call user data handlers when a node is deleted (finalized)
* @param n The node this operation applies to.
* @param c The copy node or null.
* @param operation The operation - import, clone, or delete.
* @param handlers Data associated with n.
*/
void callUserDataHandlers(Node n, Node c, short operation, Hashtable userData) {
if (userData == null || userData.isEmpty()) {
return;
}
Iterator entries = userData.entrySet().iterator();
while (entries.hasNext()) {
Map.Entry entry = (Map.Entry) entries.next();
String key = (String) entry.getKey();
UserDataRecord r = (UserDataRecord) entry.getValue();
if (r.fHandler != null) {
r.fHandler.handle(operation, key, r.fData, n, c);
}
}
}
/**
* Call user data handlers to let them know the nodes they are related to
* are being deleted. The alternative would be to do that on Node but
* because the nodes are used as the keys we have a reference to them that
* prevents them from being gc'ed until the document is. At the same time,
* doing it here has the advantage of avoiding a finalize() method on Node,
* which would affect all nodes and not just the ones that have a user
* data.
*/
// Temporarily comment out this method, because
// 1. It seems that finalizers are not guaranteed to be called, so the
// functionality is not implemented.
// 2. It affects the performance greatly in multi-thread environment.
// -SG
/*public void finalize() {
if (userData == null) {
return;
}
Enumeration nodes = userData.keys();
while (nodes.hasMoreElements()) {
Object node = nodes.nextElement();
Hashtable t = (Hashtable) userData.get(node);
if (t != null && !t.isEmpty()) {
Enumeration keys = t.keys();
while (keys.hasMoreElements()) {
String key = (String) keys.nextElement();
UserDataRecord r = (UserDataRecord) t.get(key);
if (r.fHandler != null) {
r.fHandler.handle(UserDataHandler.NODE_DELETED,
key, r.fData, null, null);
}
}
}
}
}*/
protected final void checkNamespaceWF( String qname, int colon1,
int colon2) {
if (!errorChecking) {
return;
}
// it is an error for NCName to have more than one ':'
// check if it is valid QName [Namespace in XML production 6]
// :camera , nikon:camera:minolta, camera:
if (colon1 == 0 || colon1 == qname.length() - 1 || colon2 != colon1) {
String msg =
DOMMessageFormatter.formatMessage(
DOMMessageFormatter.DOM_DOMAIN,
"NAMESPACE_ERR",
null);
throw new DOMException(DOMException.NAMESPACE_ERR, msg);
}
}
protected final void checkDOMNSErr(String prefix,
String namespace) {
if (errorChecking) {
if (namespace == null) {
String msg =
DOMMessageFormatter.formatMessage(
DOMMessageFormatter.DOM_DOMAIN,
"NAMESPACE_ERR",
null);
throw new DOMException(DOMException.NAMESPACE_ERR, msg);
}
else if (prefix.equals("xml")
&& !namespace.equals(NamespaceContext.XML_URI)) {
String msg =
DOMMessageFormatter.formatMessage(
DOMMessageFormatter.DOM_DOMAIN,
"NAMESPACE_ERR",
null);
throw new DOMException(DOMException.NAMESPACE_ERR, msg);
}
else if (
prefix.equals("xmlns")
&& !namespace.equals(NamespaceContext.XMLNS_URI)
|| (!prefix.equals("xmlns")
&& namespace.equals(NamespaceContext.XMLNS_URI))) {
String msg =
DOMMessageFormatter.formatMessage(
DOMMessageFormatter.DOM_DOMAIN,
"NAMESPACE_ERR",
null);
throw new DOMException(DOMException.NAMESPACE_ERR, msg);
}
}
}
/**
* Checks if the given qualified name is legal with respect
* to the version of XML to which this document must conform.
*
* @param prefix prefix of qualified name
* @param local local part of qualified name
*/
protected final void checkQName(String prefix, String local) {
if (!errorChecking) {
return;
}
// check that both prefix and local part match NCName
boolean validNCName = false;
if (!xml11Version) {
validNCName = (prefix == null || XMLChar.isValidNCName(prefix))
&& XMLChar.isValidNCName(local);
}
else {
validNCName = (prefix == null || XML11Char.isXML11ValidNCName(prefix))
&& XML11Char.isXML11ValidNCName(local);
}
if (!validNCName) {
// REVISIT: add qname parameter to the message
String msg =
DOMMessageFormatter.formatMessage(
DOMMessageFormatter.DOM_DOMAIN,
"INVALID_CHARACTER_ERR",
null);
throw new DOMException(DOMException.INVALID_CHARACTER_ERR, msg);
}
}
/**
* We could have more xml versions in future , but for now we could
* do with this to handle XML 1.0 and 1.1
*/
boolean isXML11Version(){
return xml11Version;
}
boolean isNormalizeDocRequired(){
// REVISIT: Implement to optimize when normalization
// is required
return true;
}
//we should be checking the (elements, attribute, entity etc.) names only when
//version of the document is changed.
boolean isXMLVersionChanged(){
return xmlVersionChanged ;
}
/**
* NON-DOM: kept for backward compatibility
* Store user data related to a given node
* This is a place where we could use weak references! Indeed, the node
* here won't be GC'ed as long as some user data is attached to it, since
* the userData table will have a reference to the node.
*/
protected void setUserData(NodeImpl n, Object data) {
setUserData(n, "XERCES1DOMUSERDATA", data, null);
}
/**
* NON-DOM: kept for backward compatibility
* Retreive user data related to a given node
*/
protected Object getUserData(NodeImpl n) {
return getUserData(n, "XERCES1DOMUSERDATA");
}
// Event related methods overidden in subclass
protected void addEventListener(NodeImpl node, String type,
EventListener listener,
boolean useCapture) {
// does nothing by default - overidden in subclass
}
protected void removeEventListener(NodeImpl node, String type,
EventListener listener,
boolean useCapture) {
// does nothing by default - overidden in subclass
}
protected void copyEventListeners(NodeImpl src, NodeImpl tgt) {
// does nothing by default - overidden in subclass
}
protected boolean dispatchEvent(NodeImpl node, Event event) {
// does nothing by default - overidden in subclass
return false;
}
// Notification methods overidden in subclasses
/**
* A method to be called when some text was changed in a text node,
* so that live objects can be notified.
*/
void replacedText(CharacterDataImpl node) {
}
/**
* A method to be called when some text was deleted from a text node,
* so that live objects can be notified.
*/
void deletedText(CharacterDataImpl node, int offset, int count) {
}
/**
* A method to be called when some text was inserted into a text node,
* so that live objects can be notified.
*/
void insertedText(CharacterDataImpl node, int offset, int count) {
}
/**
* A method to be called when a character data node is about to be modified
*/
void modifyingCharacterData(NodeImpl node, boolean replace) {
}
/**
* A method to be called when a character data node has been modified
*/
void modifiedCharacterData(NodeImpl node, String oldvalue, String value, boolean replace) {
}
/**
* A method to be called when a node is about to be inserted in the tree.
*/
void insertingNode(NodeImpl node, boolean replace) {
}
/**
* A method to be called when a node has been inserted in the tree.
*/
void insertedNode(NodeImpl node, NodeImpl newInternal, boolean replace) {
}
/**
* A method to be called when a node is about to be removed from the tree.
*/
void removingNode(NodeImpl node, NodeImpl oldChild, boolean replace) {
}
/**
* A method to be called when a node has been removed from the tree.
*/
void removedNode(NodeImpl node, boolean replace) {
}
/**
* A method to be called when a node is about to be replaced in the tree.
*/
void replacingNode(NodeImpl node) {
}
/**
* A method to be called when a node has been replaced in the tree.
*/
void replacedNode(NodeImpl node) {
}
/**
* A method to be called when a character data node is about to be replaced
*/
void replacingData(NodeImpl node) {
}
/**
* method to be called when a character data node has been replaced.
*/
void replacedCharacterData(NodeImpl node, String oldvalue, String value) {
}
/**
* A method to be called when an attribute value has been modified
*/
void modifiedAttrValue(AttrImpl attr, String oldvalue) {
}
/**
* A method to be called when an attribute node has been set
*/
void setAttrNode(AttrImpl attr, AttrImpl previous) {
}
/**
* A method to be called when an attribute node has been removed
*/
void removedAttrNode(AttrImpl attr, NodeImpl oldOwner, String name) {
}
/**
* A method to be called when an attribute node has been renamed
*/
void renamedAttrNode(Attr oldAt, Attr newAt) {
}
/**
* A method to be called when an element has been renamed
*/
void renamedElement(Element oldEl, Element newEl) {
}
/**
* The serialized forms of the user data and node table
* maps are Hashtables. Convert them into WeakHashMaps
* on load.
*/
private void readObject(ObjectInputStream in)
throws IOException, ClassNotFoundException {
in.defaultReadObject();
if (userData != null) {
userData = new WeakHashMap(userData);
}
if (nodeTable != null) {
nodeTable = new WeakHashMap(nodeTable);
}
}
/**
* To allow DOM trees serialized by newer versions of Xerces
* to be read by older versions briefly move the user data
* and node table into Hashtables.
*/
private void writeObject(ObjectOutputStream out) throws IOException {
// Keep references to the original objects for restoration after serialization
final Map oldUserData = this.userData;
final Map oldNodeTable = this.nodeTable;
try {
if (oldUserData != null) {
this.userData = new Hashtable(oldUserData);
}
if (oldNodeTable != null) {
nodeTable = new Hashtable(oldNodeTable);
}
out.defaultWriteObject();
}
// If the write fails for some reason ensure
// that we restore the original objects.
finally {
this.userData = oldUserData;
this.nodeTable = oldNodeTable;
}
}
} // class CoreDocumentImpl